@article {ISI:000393587200032,
	title = {{Bringing microbial diversity into focus: high-resolution analysis of iron mats from the Lo{\textquoteright}ihi Seamount}},
	journal = {ENVIRONMENTAL MICROBIOLOGY},
	volume = {19},
	number = {1},
	year = {2017},
	month = {jan},
	pages = {301{\textendash}316},
	type = {Article},
	abstract = {Thirty kilometers south of the island of Hawaii lies the Lihi Seamount, an active submarine volcano that hosts a network of low-temperature hydrothermal vents enriched in ferrous iron that supports extensive microbial mats. These mats, which can be a half a meter deep, are composed of ferric iron bound to organic polymers - the metabolic byproduct of iron-oxidizing Zetaproteobacteria. Though the role of Zetaproteobacteria in mat formation is well established, we have a limited understanding of how differences in diversity are related to mat morphology. We used Minimum Entropy Decomposition and ZetaOtu classification to demonstrate cryptic diversity between closely related Zetaproteobacteria while showing habitat and geographic specificity. Veiled mats, common structures at Lihi, exhibit distinct community composition and contain diversity not detected in other mat types, including specific Zetaproteobacteria and an unclassified Gammaproteobacteria. Our analyses also indicate that diversity can change dramatically across small spatial transects from points of active venting, yet we found comparatively few differences between major sampling sites. This study provides a better picture of the microbiome responsible for iron mat production at Lihi and has broad implications for our understanding of these globally distributed communities.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {1462-2912},
	doi = {10.1111/1462-2920.13607},
	author = {Scott, Jarrod J and Glazer, Brian T and Emerson, David}
}
@article {Billings2017,
	title = {{SyPRID sampler: A large-volume, high-resolution, autonomous, deep-ocean precision plankton sampling system}},
	journal = {Deep Sea Research Part II: Topical Studies in Oceanography},
	volume = {137},
	year = {2017},
	pages = {297{\textendash}306},
	abstract = {The current standard for large-volume (thousands of cubic meters) zooplankton sampling in the deep sea is the MOCNESS, a system of multiple opening{\textendash}closing nets, typically lowered to within 50 m of the seabed and towed obliquely to the surface to obtain low-spatial-resolution samples that integrate across 10 s of meters of water depth. The SyPRID (Sentry Precision Robotic Impeller Driven) sampler is an innovative, deep-rated (6000 m) plankton sampler that partners with the Sentry Autonomous Underwater Vehicle (AUV) to obtain paired, large-volume plankton samples at specified depths and survey lines to within 1.5 m of the seabed and with simultaneous collection of sensor data. SyPRID uses a perforated Ultra-High-Molecular-Weight (UHMW) plastic tube to support a fine mesh net within an outer carbon composite tube (tube-within-a-tube design), with an axial flow pump located aft of the capture filter. The pump facilitates flow through the system and reduces or possibly eliminates the bow wave at the mouth opening. The cod end, a hollow truncated cone, is also made of UHMW plastic and includes a collection volume designed to provide an area where zooplankton can collect, out of the high flow region. SyPRID attaches as a saddle-pack to the Sentry vehicle. Sentry itself is configured with a flight control system that enables autonomous survey paths to low altitudes. In its verification deployment at the Blake Ridge Seep (2160 m) on the US Atlantic Margin, SyPRID was operated for 6 h at an altitude of 5 m. It recovered plankton samples, including delicate living larvae, from the near-bottom stratum that is seldom sampled by a typical MOCNESS tow. The prototype SyPRID and its next generations will enable studies of plankton or other particulate distributions associated with localized physico-chemical strata in the water column or above patchy habitats on the seafloor.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1016/j.dsr2.2016.05.007},
	author = {Billings, A and Kaiser, C and Young, C M and Hiebert, L S and Cole, E and Wagner, J K S and Van Dover, C L}
}
@article {ISI:000400818400021,
	title = {{Telepresence is a potentially transformative tool for field science}},
	journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA},
	volume = {114},
	number = {19},
	year = {2017},
	month = {may},
	pages = {4841{\textendash}4844},
	publisher = {NATL ACAD SCIENCES},
	address = {2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle), HOV Alvin (Human Occupied Vehicle)},
	issn = {0027-8424},
	doi = {10.1073/pnas.1703514114},
	author = {Marlow, Jeffrey and Borrelli, Chiara and Jungbluth, Sean P and Hoffman, Colleen and Marlow, Jennifer and Girguis, Peter R and Team, AT-36}
}
@article {Tontini2016,
	title = {{Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sites}},
	journal = {Geophysical Research Letters},
	volume = {43},
	year = {2016},
	pages = {6205{\textendash}6211},
	abstract = {High-resolution geophysical data have been collected using the Autonomous Underwater Vehicle (AUV) Sentry over the ASHES (Axial Seamount Hydrothermal Emission Study) high-temperature ({\~{}}348{\textdegree}C) vent field at Axial Seamount, on the Juan de Fuca Ridge. Multiple surveys were performed on a 3-D grid at different altitudes above the seafloor, providing an unprecedented view of magnetic data resolution as a function of altitude above the seafloor. Magnetic data derived near the seafloor show that the ASHES field is characterized by a zone of low magnetization, which can be explained by hydrothermal alteration of the host volcanic rocks. Surface manifestations of hydrothermal activity at the ASHES vent field are likely controlled by a combination of local faults and fractures and different lava morphologies near the seafloor. Three-dimensional inversion of the magnetic data provides evidence of a vertical, pipe-like upflow zone of the hydrothermal fluids with a vertical extent of {\~{}}100 m.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1002/2016GL069430},
	author = {Tontini, F C and Crone, T J and de Ronde, C E J and Fornari, D J and Kinsey, J C and Mittelstaedt, E and Tivey, M K}
}
@article {Mittelstaedt2016,
	title = {{Diffuse venting at the ASHES hydrothermal field: Heat flux and tidally modulated flow variability derived from in situ time-series measurements}},
	journal = {Geochemistry, Geophysics, Geosystems},
	volume = {17},
	year = {2016},
	pages = {1435{\textendash}1453},
	abstract = {Time-series measurements of diffuse exit-fluid temperature and velocity collected with a new, deep-sea camera, and temperature measurement system, the Diffuse Effluent Measurement System (DEMS), were examined from a fracture network within the ASHES hydrothermal field located in the caldera of Axial Seamount, Juan de Fuca Ridge. The DEMS was installed using the HOV Alvin above a fracture near the Phoenix vent. The system collected 20 s of 20 Hz video imagery and 24 s of 1 Hz temperature measurements each hour between 22 July and 2 August 2014. Fluid velocities were calculated using the Diffuse Fluid Velocimetry (DFV) technique. Over the similar to 12 day deployment, median upwelling rates and mean fluid temperature anomalies ranged from 0.5 to 6 cm/s and 0 degrees C to similar to 6.5 degrees C above ambient, yielding a heat flux of 0.29 +/- 0.22 MW M-2 and heat output of 3.1 +/- 2.5 kW. Using a photo mosaic to measure fracture dimensions, the total diffuse heat output from cracks across ASHES field is estimated to be 2.05 +/- 1.95 MW. Variability in temperatures and velocities are strongest at semidiurnal periods and show significant coherence with tidal height variations. These data indicate that periodic variability near Phoenix vent is modulated both by tidally controlled bottom currents and seafloor pressure, with seafloor pressures being the dominant influence. These results emphasize the importance of local permeability on diffuse hydrothermal venting at mid-ocean ridges and the need to better quantify heat flux associated with young oceanic crust.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle), HOV Alvin (Human Occupied Vehicle)},
	doi = {10.1002/2015GC006144},
	author = {Mittelstaedt, E and Fornari, D J and Crone, T J and Kinsey, J C and Kelley, D S and Elend, M J}
}
@article {Mevenkamp2016,
	title = {{Experimental evidence for selective settlement of meiofauna from two distinct environments after sediment suspension}},
	journal = {Journal of Experimental Marine Biology and Ecology},
	volume = {474},
	year = {2016},
	pages = {195{\textendash}203},
	abstract = {The cosmopolitan distribution of many meiofaunal organisms raises questions about their dispersal. The small size and the lack of a planktonic life stage of most meiofauna taxa including free-living nematodes suggest that passive dispersal is a main factor determining their distribution. This study investigates the settling behaviour of meiofauna in a water column under no-flow conditions. Two ex situ settling experiments were conducted with (1) macrophyte associated meiofauna from an intertidal salt marsh and (2) meiofauna of sulphidic sediments associated with bacterial mats from the deep-sea H{\aa}kon Mosby mud volcano. Cilyndrical containers filled with sieved seawater were used as settling chambers and five different substrates, placed on the bottom of the containers, were offered to the descending meiofaunal assemblage. The substrates used in experiment 1 were agar with bacteria, agar with Fucus spiralis, sulphidic agar medium, bare agar and an empty Petri dish. For experiment 2 azoic sediment with algae, azoic sediment with bacteria, a sulphidic medium, bare azoic sediment and an empty Petri dish were used. The intertidal experiment revealed that nematodes and nauplius larvae showed four- to tenfold higher densities in the Fucus treatment compared with the controls whereas deep-sea nematode and harpacticoid copepod densities in the sulphide treatment were more than three times higher compared with all other treatments. In both experiments nematode composition did not differ from the reference samples whereas proportions of harpacticoid copepods were increased in the treatments of the deep-sea experiment compared with the reference sample suggesting a better ability to select settlement sites than nematodes. In both experiments meiofauna abundance was highest in substrates with similar characteristics as their original habitat. These findings indicate that some meiofaunal organisms can selectively settle once they are suspended in the water column in the absence of water flow and therefore actively contribute to their dispersal at small spatial scales.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1016/j.jembe.2015.10.005},
	author = {Mevenkamp, L and Van Campenhout, J and Vanreusel, A}
}
@article {ISI:000390261300037,
	title = {{Inflation-predictable behavior and co-eruption deformation at Axial Seamount}},
	journal = {SCIENCE},
	volume = {354},
	number = {6318},
	year = {2016},
	month = {dec},
	pages = {1399{\textendash}1403},
	type = {Article},
	abstract = {Deformation of the ground surface at active volcanoes provides information about magma movements at depth. Improved seafloor deformation measurements between 2011 and 2015 documented a fourfold increase in magma supply and confirmed that Axial Seamount{\textquoteright}s eruptive behavior is inflation-predictable, probably triggered by a critical level of magmatic pressure. A 2015 eruption was successfully forecast on the basis of this deformation pattern and marked the first time that deflation and tilt were captured in real time by a new seafloor cabled observatory, revealing the timing, location, and volume of eruption-related magma movements. Improved modeling of the deformation suggests a steeply dipping prolate-spheroid pressure source beneath the eastern caldera that is consistent with the location of the zone of highest melt within the subcaldera magma reservoir determined from multichannel seismic results.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {0036-8075},
	doi = {10.1126/science.aah4666},
	author = {Nooner, Scott L and Chadwick Jr., William W}
}
@article {Medagoda2016,
	title = {{Mid-water current aided localization for autonomous underwater vehicles}},
	journal = {Autonomous Robots},
	volume = {40},
	number = {7, SI},
	year = {2016},
	pages = {1207{\textendash}1227},
	abstract = {Survey-class autonomous underwater vehicles (AUVs) typically rely on Doppler Velocity Logs (DVL) for precision localization near the seafloor. In cases where the seafloor depth is greater than the DVL bottom-lock range, localizing between the surface and the seafloor presents a localization problem since both GPS and DVL observations are unavailable in the mid-water column. This work proposes a solution to this problem that exploits the fact that current profile layers of the water column are near constant over short time scales (in the scale of minutes). Using observations of these currents obtained with the Acoustic Doppler Current Profiler mode of the DVL during descent, along with data from other sensors, the method discussed herein constrains position error. The method is validated using field data from the Sirius AUV coupled with view-based Simultaneous Localization and Mapping (SLAM) and on descents up to 3km deep with the Sentry AUV.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1007/s10514-016-9547-3},
	author = {Medagoda, L and Williams, S B and Pizarro, O and Kinsey, J C and Jakuba, M V}
}
@article {ISI:000370971600005,
	title = {{Transcription, Signaling Receptor Activity, Oxidative Phosphorylation, and Fatty Acid Metabolism Mediate the Presence of Closely Related Species in Distinct Intertidal and Cold-Seep Habitats}},
	journal = {GENOME BIOLOGY AND EVOLUTION},
	volume = {8},
	number = {1},
	year = {2016},
	month = {jan},
	pages = {51{\textendash}69},
	type = {Article},
	abstract = {Bathyal cold seeps are isolated extreme deep-sea environments characterized by low species diversity while biomass can be high. The Hakon Mosby mud volcano (Barents Sea, 1,280 m) is a rather stable chemosynthetic driven habitat characterized by prominent surface bacterial mats with high sulfide concentrations and low oxygen levels. Here, the nematode Halomonhystera hermesithrives in high abundances (11,000 individuals 10 cm(-2)). Halomonhystera hermesi is a member of the intertidal Halomonhystera disjuncta species complex that includes five cryptic species (GD 1-5). GD1-5{\textquoteright}s common habitat is characterized by strong environmental fluctuations. Here, we compared the transcriptomes of H. hermesi and GD1, H. hermesi{\textquoteright}s closest relative. Genes encoding proteins involved in oxidative phosphorylation are more strongly expressed in H. hermesi than in GD1, and many genes were only observed in H. hermesi while being completely absent in GD1. Both observations could in part be attributed to high sulfide concentrations and low oxygen levels. Additionally, fatty acid elongation was also prominent in H. hermesi confirming the importance of highly unsaturated fatty acids in this species. Significant higher amounts of transcription factors and genes involved in signaling receptor activity were observed in GD1 (many of which were completely absent in H. hermesi), allowing fast signaling and transcriptional reprogramming which can mediate survival in dynamic intertidal environments. GC content was approximately 8{\%} higher in H. hermesi coding unigenes resulting in differential codon usage between both species and a higher proportion of amino acids with GC-rich codons in H. hermesi. In general our results showed that most pathways were active in both environments and that only three genes are under natural selection. This indicates that also plasticity should be taken in consideration in the evolutionary history of Halomonhystera species. Such plasticity, as well as possible preadaptation to low oxygen and high sulfide levels might have played an important role in the establishment of a cold-seep Halomonhystera population.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	issn = {1759-6653},
	doi = {10.1093/gbe/evv242},
	author = {Van Campenhout, Jelle and Vanreusel, Ann and Van Belleghem, Steven and Derycke, Sofie}
}
@article {Chadwick2016,
	title = {{Voluminous eruption from a zoned magma body after an increase in supply rate at Axial Seamount}},
	journal = {Geophysical Research Letters},
	volume = {43},
	year = {2016},
	pages = {12,063{\textendash}12,070},
	abstract = {Axial Seamount is the best monitored submarine volcano in the world, providing an exceptional window into the dynamic interactions between magma storage, transport, and eruption processes in a mid-ocean ridge setting. An eruption in April 2015 produced the largest volume of erupted lava since monitoring and mapping began in the mid-1980s after the shortest repose time, due to a recent increase in magma supply. The higher rate of magma replenishment since 2011 resulted in the eruption of the most mafic lava in the last 500{\textendash}600 years. Eruptive fissures at the volcano summit produced pyroclastic ash that was deposited over an area of at least 8 km2. A systematic spatial distribution of compositions is consistent with a single dike tapping different parts of a thermally and chemically zoned magma reservoir that can be directly related to previous multichannel seismic-imaging results.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle), ROV Jason (Remotely Operated Vehicle)},
	doi = {10.1002/2016GL071327},
	author = {Chadwick, W W and Paduan, J B and Clague, D A and Dreyer, B M and Merle, S G and Bobbitt, A M and Caress, D W and Philip, B T and Kelley, D S and Nooner, S L}
}
@article {ISI:000358016200003,
	title = {{Advances in In Situ Alignment Calibration of Doppler and High/Low-end Attitude Sensors for Underwater Vehicle Navigation: Theory and Experimental Evaluation}},
	journal = {JOURNAL OF FIELD ROBOTICS},
	volume = {32},
	number = {5, SI},
	year = {2015},
	month = {aug},
	pages = {655{\textendash}674},
	type = {Article},
	abstract = {This paper reports the development and comparative performance evaluation, using laboratory and at-sea field data, of new methods for the problem of in situ calibration of the alignment rotation matrix between Doppler sonar velocity sensors and attitude sensors arising in the navigation of underwater vehicles. Most previously reported solutions to this alignment calibration problem require the use of absolute navigation fixes of the underwater vehicle, thus requiring additional navigation sensors and/or beacons to be located externally and apart from the underwater vehicle. We report four novel alignment calibration methods employing only internal vehicle navigation sensors for velocity, acceleration, attitude, and depth. We report the results of comparative analysis of the performance of these new methods and a previously reported method with a navigation laboratory and at-sea field data. Laboratory data were obtained with the Johns Hopkins University JHU remotely operated underwater vehicle in the JHU Hydrodynamic Test Facility. At-sea field data were obtained from deep-water survey missions of the Sentry autonomous underwater vehicle conducted in March, 2011 in the Kermadec Arc in the Southern Pacific Ocean. In addition, we report a comparative experimental evaluation of several recently reported calibration methods when employing low-cost microelectromechanical system attitude sensors. In all these cases, the results reveal consistent differences in performance of the various methods when analyzed on navigation data from several different vehicle dives.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	issn = {1556-4959},
	doi = {10.1002/rob.21551},
	author = {Troni, Giancarlo and Whitcomb, Louis L}
}
@article {1115,
	title = {{Centuries-old shipwreck discovered off North Carolina}},
	journal = {Ocean News {\&} Technology},
	volume = {21},
	number = {7},
	year = {2015},
	pages = {16},
	abstract = {Scanning sonar from a scientific expedition has revealed the remains of a previously unknown shipwreck more than a mile deep off the North Carolina coast. Artifacts on the wreck indicate it might date to the American Revolution. Marine scientists from Duke University, North Carolina State University and the University of Oregon discovered the wreck on 12 July during a research expedition aboard the Woods Hole Oceanographic Institution (WHOI) research ship Atlantis. They spotted the wreck while using WHOI{\textquoteright}s AUV Sentry and the manned submersible Alvin. The team had been searching for a mooring that was deployed on a previous research trip in the area in 2012.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)}
}
@article {ISI:000367001600001,
	title = {{Microbial Communities on Seafloor Basalts at Dorado Outcrop Reflect Level of Alteration and Highlight Global Lithic Clades}},
	journal = {FRONTIERS IN MICROBIOLOGY},
	volume = {6},
	year = {2015},
	month = {dec},
	type = {Article},
	abstract = {Areas of exposed basalt along mid-ocean ridges and at seafloor outcrops serve as conduits of fluid flux into and out of a subsurface ocean, and microbe-mineral interactions can influence alteration reactions at the rock-water interface. Located on the eastern flank of the East Pacific Rise, Dorado Outcrop is a site of low temperature ({\textless} 20 degrees C) hydrothermal venting and represents a new end-member in the current survey of seafloor basalt biomes. Consistent with prior studies, a survey of 16S rRNA gene sequence diversity using universal primers targeting the V4 hypervariable region revealed much greater richness and diversity on the seafloor rocks than in surrounding seawater. Overall, Gamma-, Alpha-, and Deltaproteobacteria, and Thaumarchaeota dominated the sequenced communities, together making up over half of the observed diversity, though bacterial sequences were more abundant than archaeal in all samples. The most abundant bacterial reads were closely related to the obligate chemolithoautotrophic, sulfur-oxidizing Thioprofundum lifl-lotrophicum, suggesting carbon and sulfur cycling as dominant metabolic pathways in this system. Representatives of Thaumarchaeota were detected in relatively high abundance on the basalts in comparison to bottom water, possibly indicating ammonia oxidation. In comparison to other sequence datasets from globally distributed seafloor basalts, this study reveals many overlapping and cosmopolitan phylogenetic groups and also suggests that substrate age correlates with community structure.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {1664-302X},
	doi = {10.3389/fmicb.2015.01470},
	author = {Lee, Michael D and Walworth, Nathan G and Sylvan, Jason B and Edwards, Katrina J and Orcutt, Beth N}
}
@article {ISI:000345545100011,
	title = {{The Anatomy of a Buried Submarine Hydrothermal System, Clark Volcano, Kermadec Arc, New Zealand}},
	journal = {ECONOMIC GEOLOGY},
	volume = {109},
	number = {8},
	year = {2014},
	month = {dec},
	pages = {2261{\textendash}2292},
	type = {Article},
	abstract = {Clark volcano of the Kermadec arc, northeast of New Zealand, is a large stratovolcano comprised of two coalescing volcanic cones; an apparently younger, more coherent, twin-peaked edifice to the northwest and a relatively older, more degraded and tectonized cone to the southeast. High-resolution water column surveys show an active hydrothermal system at the summit of the NW cone largely along a ridge spur connecting the two peaks, with activity also noted at the head of scarps related to sector collapse. Clark is the only known cone volcano along the Kermadec arc to host sulfide mineralization. Volcano-scale gravity and magnetic surveys over Clark show that it is highly magnetized, and that a strong gravity gradient exists between the two edifices. Modeling suggests that a crustal-scale fault lies between these two edifices, with thinner crust beneath the NW cone. Locations of regional earthquake epicenters show a southwest-northeast trend bisecting the two Clark cones, striking northeastward into Tangaroa volcano. Detailed mapping of magnetics above the NW cone summit shows a highly magnetized ring structure 350 m below the summit that is not apparent in the bathymetry; we believe this structure represents the top of a caldera. Oblate zones of low (weak) magnetization caused by hydrothermal fluid upflow, here termed burn holes, form a pattern in the regional magnetization resembling Swiss cheese. Presumably older burn holes occupy the inner margin of the ring structure and show no signs of hydrothermal activity, while younger burn holes are coincident with active venting on the summit. A combination of mineralogy, geochemistry, and seafloor mapping of the NW cone shows that hydrothermal activity today is largely manifest by widespread diffuse venting, with temperatures ranging between 56 degrees and 106 degrees C. Numerous, small ({\textless}= 30 cm high) chimneys populate the summit area, with one site host to the similar to 7-m-tall {\textquoteleft}{\textquoteleft}Twin Towers{\{}{\textquoteright}{\textquoteright}{\}} chimneys with maximum vent fluid temperatures of 221 degrees C (pH 4.9), consistent with delta S-34(anhydrite-pyrite) values indicating formation temperatures of similar to 228 degrees to 249 degrees C. Mineralization is dominated by pyrite-marcasite-barite-anhydrite. Radiometric dating using the Ra-228/Ra-226 and Ra-226/Ba methods shows active chimneys to be {\textless}20 with most {\textless}2 years old. However, the chimneys at Clark show evidence for mixing with, and remobilizing of, barite as old as 19,000 years. This is consistent with Nd and Sr isotope compositions of Clark chimney and sulfate crust samples that indicate mixing of similar to 40{\%} seawater with a vent fluid derived from low K lavas. Similarly, REE data show the hydrothermal fluids have interacted with a plagioclase-rich source rock. A holistic approach to the study of the Clark hydrothermal system has revealed a two-stage process whereby a caldera-forming volcanic event preceded a later cone-building event. This ensured a protracted (at least 20 ka yrs) history of hydrothermal activity and associated mineral deposition. If we assume at least 200-m-high walls for the postulated (buried) caldera, then hydrothermal fluids would have exited the seafloor 20 ka years ago at least 550 m deeper than they do today, with fluid discharge temperatures potentially much hotter (similar to 350 degrees C). Subsequent to caldera infilling, relatively porous volcaniclastic and other units making up the cone acted as largescale filters, enabling ascending hydrothermal fluids to boil and mix with seawater subseafloor, effectively removing the metals (including remobilized Cu) in solution before they reached the seafloor. This has implications for estimates for the metal inventory of seafloor hydrothermal systems pertaining to arc hydrothermal systems.},
	keywords = {AUV ABE (Autonomous Benthic Explorer), AUV Sentry (Autonomous Underwater Vehicle)},
	issn = {0361-0128},
	author = {de Ronde, C E J and Walker, S L and Ditchburn, R G and Tontini, F Caratori and Hannington, M D and Merle, S G and Timm, C and Handler, M R and Wysoczanski, R J and Dekov, V M and Kamenov, G D and Baker, E T and Embley, R W and Lupton, J E and Stoffers, P}
}
@article {Smith2014,
	title = {{Development and evolution of detachment faulting along 50 km of the Mid-Atlantic Ridge near 16.5{\textdegree}N}},
	journal = {Geochemistry, Geophysics, Geosystems},
	volume = {15},
	number = {12},
	year = {2014},
	pages = {4692{\textendash}4711},
	abstract = {A multifaceted study of the slow spreading Mid-Atlantic Ridge (MAR) at 16.5{\textdegree}N provides new insights into detachment faulting and its evolution through time. The survey included regional multibeam bathymetry mapping, high-resolution mapping using AUV Sentry, seafloor imaging using the TowCam system, and an extensive rock-dredging program. At different times, detachment faulting was active along \~{}50 km of the western flank of the study area, and may have dominated spreading on that flank for the last 5 Ma. Detachment morphologies vary and include a classic corrugated massif, noncorrugated massifs, and back-tilted ridges marking detachment breakaways. High-resolution Sentry data reveal a new detachment morphology; a low-angle, irregular surface in the regional bathymetry is shown to be a finely corrugated detachment surface (corrugation wavelength of only tens of meters and relief of just a few meters). Multiscale corrugations are observed 2{\textendash}3 km from the detachment breakaway suggesting that they formed in the brittle layer, perhaps by anastomosing faults. The thin wedge of hanging wall lavas that covers a low-angle (6{\textdegree}) detachment footwall near its termination are intensely faulted and fissured; this deformation may be enhanced by the low angle of the emerging footwall. Active detachment faulting currently is limited to the western side of the rift valley. Nonetheless, detachment fault morphologies also are present over a large portion of the eastern flank on crust {\textgreater}2 Ma, indicating that within the last 5 Ma parts of the ridge axis have experienced periods of two-sided detachment faulting.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1002/2014GC005563},
	author = {Smith, D K and Schouten, H and Dick, H J B and Cann, J R and Salters, V and Marschall, H R and Ji, F and Yoerger, D R and Sanfilippo, A and Parnell-Turner, R and Palmiotto, C and Zheleznov, A and Bai, H and Junkin, W and Urann, B and Dick, S and Sulanowska, M and Lemmond, P and Curry, S}
}
@article {Feseker2014,
	title = {{Eruption of a deep-sea mud volcano triggers rapid sediment movement}},
	journal = {Nature Communications},
	volume = {5},
	year = {2014},
	pages = {5385},
	abstract = {Submarine mud volcanoes are important sources of methane to the water column. However, the temporal variability of their mud and methane emissions is unknown. Methane emissions were previously proposed to result from a dynamic equilibrium between upward migration and consumption at the seabed by methane-consuming microbes. Here we show non-steady-state situations of vigorous mud movement that are revealed through variations in fluid flow, seabed temperature and seafloor bathymetry. Time series data for pressure, temperature, pH and seafloor photography were collected over 431 days using a benthic observatory at the active H{\aa}kon Mosby Mud Volcano. We documented 25 pulses of hot subsurface fluids, accompanied by eruptions that changed the landscape of the mud volcano. Four major events triggered rapid sediment uplift of more than a metre in height, substantial lateral flow of muds at average velocities of 0.4 m per day, and significant emissions of methane and CO2 from the seafloor.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1038/ncomms6385},
	author = {Feseker, T and Boetius, A and Wenzh{\"o}fer, F and Blandin, J and Olu, K and Yoerger, D R and Camilli, R and German, C R and de Beer, D}
}
@article {ISI:000338120000010,
	title = {{High-resolution ecological niche modelling of the cold-water coral Lophelia pertusa in the Gulf of Mexico}},
	journal = {MARINE ECOLOGY PROGRESS SERIES},
	volume = {506},
	year = {2014},
	pages = {145{\textendash}U454},
	type = {Article},
	abstract = {The niche of many deep-sea species remains poorly resolved despite decades of seafloor exploration. Without better information on the distribution and habitat preference of key species, a complete understanding of the ecology of deep-sea communities will remain unattainable. It is increasingly apparent that cold-water corals are among the dominant foundation species in the deep sea, providing both structurally complex habitat and significant ecosystem services. In this study, the niche and distribution of the cold-water coral Lophelia pertusa in the Gulf of Mexico was evaluated using the maximum entropy (Maxent) approach. Ecological niche models were constructed for a broad region of the northern Gulf of Mexico using data gridded at a spatial resolution of 25 m, including bathymetry, substrate type, export productivity, and aragonite saturation state at depth. Fine-scale models were constructed at a resolution of 5 m using only remotely sensed bathymetric and surface reflectivity data. The broad-scale model performed well, with an area under the curve (AUC) of 0.981. All fine-scale models performed well when verified using training data (average AUC of 0.963) and when validated using independent occurrence data from a new geographic region (average AUC of 0.937). The distribution of L. pertusa in the Gulf of Mexico was found to be controlled primarily by depth, local topography, and availability of hard substrate. While these factors have long been associated with the success of cold-water corals, their relative importance has never been quantified in the Gulf of Mexico, making it historically difficult to precisely delineate L. pertusa{\textquoteright}s niche and predict its distribution in unexplored regions. Given these results, we suggest that future expeditions combine remotely sensed data with niche modelling techniques to increase the efficiency of deep-sea exploration.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {0171-8630},
	doi = {10.3354/meps10816},
	author = {Georgian, Samuel E and Shedd, William and Cordes, Erik E}
}
@article {Parnell-Turner2014,
	title = {{Sedimentation rates test models of oceanic detachment faulting}},
	journal = {Geophysical Research Letters},
	volume = {41},
	number = {20},
	year = {2014},
	pages = {7080{\textendash}7088},
	abstract = {Long-lived detachment faults play an important role in the construction of new oceanic crust at slow-spreading mid-oceanic ridges. Although the corrugated surfaces of exposed low-angle faults demonstrate past slip, it is difficult to determine whether a given fault is currently active. If inactive, it is unclear when slip ceased. This judgment is crucial for tectonic reconstructions where detachment faults are present, and for models of plate spreading. We quantify variation in sediment thickness over two corrugated surfaces near 16.5{\textdegree}N at the Mid-Atlantic Ridge using near-bottom Compressed High Intensity Radar Pulse (CHIRP) data. We show that the distribution of sediment and tectonic features at one detachment fault is consistent with slip occurring today. In contrast, another corrugated surface 20 km to the south shows a sediment distribution suggesting that slip ceased {\~{}}150,000 years ago. Data presented here provide new evidence for active detachment faulting, and suggest along-axis variations in fault activity occur over tens of kilometers.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1002/2014GL061555},
	author = {Parnell-Turner, R and Cann, J R and Smith, D K and Schouten, H and Yoerger, D R and Palmiotto, C and Zheleznov, A and Bai, H}
}
@article {Wagner2013,
	title = {{Cold-seep habitat mapping: High-resolution spatial characterization of the Blake Ridge Diapir seep field}},
	journal = {Deep-Sea Research. Part II: Topical Studies in Oceanography},
	volume = {92},
	number = {SI},
	year = {2013},
	pages = {183{\textendash}188},
	abstract = {Relationships among seep community biomass, diversity, and physiographic controls such as underlying geology are not well understood. Previous efforts to constrain these relationships at the Blake Ridge Diapir were limited to observations from piloted deep-submergence vehicles. In August 2012, the autonomous underwater vehicle (AUV) Sentry collected geophysical and photographic data over a 0.131~km2 area at the Blake Ridge Diapir seeps. A nested survey approach was used that began with a regional or reconnaissance-style survey using sub-bottom mapping systems to locate and identify seeps and underlying conduits. This survey was followed by AUV-mounted sidescan sonar and multibeam echosounder systems mapping on a mesoscale to characterize the seabed physiography. At the most detailed survey level, digital photographic imaging was used to resolve sub-meter characteristics of the biology. Four pockmarks (25{\textendash}70~m diameter) were documented, each supporting chemosynthetic communities. Concentric zonation of mussels and clams suggests the influence of chemical gradients on megafaunal distribution. Data collection and analytical techniques used here yield high-resolution habitat maps that can serve as baselines to constrain temporal evolution of seafloor seeps, and to inform ecological niche modeling and resource management.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1016/j.dsr2.2013.02.008},
	author = {Wagner, J K S and McEntee, M H and Brothers, L L and German, C R and Kaiser, C L and Yoerger, D R and Van Dover, C L}
}
@article {Brothers2013,
	title = {{Evidence for extensive methane venting on the southeastern U.S. Atlantic margin}},
	journal = {Geology},
	volume = {41},
	number = {7},
	year = {2013},
	month = {jul},
	pages = {807{\textendash}810},
	abstract = {We present the first evidence for widespread seabed methane venting along the southeastern United States Atlantic margin beyond the well-known Blake Ridge diapir seep. Recent ship- and autonomous underwater vehicle (AUV)-collected data resolve multiple water-column anomalies ({\textgreater}1000 m height) and extensive new chemosynthetic seep communities at the Blake Ridge and Cape Fear diapirs. These results indicate that multiple, highly localized fluid conduits punctuate the areally extensive Blake Ridge gas hydrate province, and enable the delivery of significant amounts of methane to the water column. Thus, there appears to be an abundance of seabed fluid flux not previously ascribed to the Atlantic margin of the United States.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	issn = {0091-7613},
	doi = {10.1130/G34217.1},
	author = {Brothers, L L and Van Dover, C L and German, C R and Kaiser, C L and Yoerger, D R and Ruppel, C D and Lobecker, E and Skarke, A D and Wagner, J K S}
}
@article {Tontini2013,
	title = {{Geophysical modeling of collapse-prone zones at Rumble III seamount, southern Pacific Ocean, New Zealand}},
	journal = {Geochemistry, Geophysics, Geosystems},
	volume = {14},
	number = {10},
	year = {2013},
	pages = {4667{\textendash}4680},
	abstract = {Catastrophic collapses of submarine volcanoes have the potential to generate major tsunami, threatening many coastal populations. Recognizing the difficulties surrounding anticipations of these events, quantitative assessment of collapse-prone regions based on detailed morphological, geological, and geophysical mapping can still provide important information about the hazards associated with these collapses. Rumble III is one of the shallowest, and largest, submarine volcanoes found along the Kermadec arc, and is both volcanically and hydrothermally active. Previous surveys have delineated major collapse features at Rumble III; based on time-lapse bathymetry, dramatic changes in the volcano morphology have been shown to have occurred over the interval 2007{\textendash}2009. Furthermore, this volcano is located just \~{}300 km from the east coast of the North Island of New Zealand. Here, we present a geophysical model for Rumble III that provides the locations and sizes of potential weak regions of this volcano. Shipborne and near-seafloor geological and geophysical data collected by the AUV Sentry are used to determine the subsurface distribution of weak and unstable volcanic rocks. The resulting model provides evidence for potentially unstable areas located in the Southeastern flank of this volcano which should be included in future hazard predictions.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	issn = {1525-2027},
	doi = {10.1002/ggge.20278},
	url = {http://dx.doi.org/10.1002/ggge.20278},
	author = {Tontini, F C and de Ronde, C E J and Kinsey, J C and Soule, A and Yoerger, D and Cocchi, L}
}
@mastersthesis {Stanway2012,
	title = {{Contributions to automated realtime underwater navigation}},
	volume = {Ph.D.},
	year = {2012},
	school = {Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution},
	type = {phd},
	address = {Cambridge, MA and Woods Hole, MA},
	abstract = {This dissertation presents three separate{\textendash}but related{\textendash}contributions to the art of underwater navigation. These methods may be used in postprocessing with a human in the loop, but the overarching goal is to enhance vehicle autonomy, so the emphasis is on automated approaches that can be used in realtime. The three research threads are: i) in situ navigation sensor alignment, ii) dead reckoning through the water column, and iii) model-driven delayed measurement fusion. Contributions to each of these areas have been demonstrated in simulation, with laboratory data, or in the field{\textendash}some have been demonstrated in all three arenas. The solution to the in situ navigation sensor alignment problem is an asymptotically stable adaptive identifier formulated using rotors in Geometric Algebra. This identifier is applied to precisely estimate the unknown alignment between a gyrocompass and Doppler velocity log, with the goal of improving realtime dead reckoning navigation. Laboratory and field results show the identifier performs comparably to previously reported methods using rotation matrices, providing an alignment estimate that reduces the position residuals between dead reckoning and an external acoustic positioning system. The Geometric Algebra formulation also encourages a straightforward interpretation of the identifier as a proportional feedback regulator on the observable output error. Future applications of the identifier may include alignment between inertial, visual, and acoustic sensors. The ability to link the Global Positioning System at the surface to precision dead reckoning near the seafloor might enable new kinds of missions for autonomous underwater vehicles. This research introduces a method for dead reckoning through the water column using water current profile data collected by an onboard acoustic Doppler current profiler. Overlapping relative current profiles provide information to simultaneously estimate the vehicle velocity and local ocean current{\textendash}the vehicle velocity is then integrated to estimate position. The method is applied to field data using online bin average, weighted least squares, and recursive least squares implementations. This demonstrates an autonomous navigation link between the surface and the seafloor without any dependence on a ship or external acoustic tracking systems. Finally, in many state estimation applications, delayed measurements present an interesting challenge. Underwater navigation is a particularly compelling case because of the relatively long delays inherent in all available position measurements. This research develops a flexible, model-driven approach to delayed measurement fusion in realtime Kalman filters. Using a priori estimates of delayed measurements as augmented states minimizes the computational cost of the delay treatment. Managing the augmented states with time-varying conditional process and measurement models ensures the approach works within the proven Kalman filter framework{\textendash}without altering the filter structure or requiring any ad-hoc adjustments. The end result is a mathematically principled treatment of the delay that leads to more consistent estimates with lower error and uncertainty. Field results from dead reckoning aided by acoustic positioning systems demonstrate the applicability of this approach to real-world problems in underwater navigation.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle), HOV Alvin (Human Occupied Vehicle)},
	doi = {10.1575/1912/5095},
	author = {Stanway, M J}
}
@conference {Kaiser2012,
	title = {{Satellite based remote management and operation of a 6000m AUV}},
	booktitle = {Oceans, 2012},
	volume = {Hampton Ro},
	year = {2012},
	abstract = {During a July, 2012 expedition to the Hatteras Transverse Canyon, Blake Ridge, and Cape Fear Diapir, the AUV Sentry, aboard the NOAA Ship Okeanos, conducted experiments into remote operation of an AUV via satellite link. Remote launch, remote engineering, remote data processing and remote watch standing were all explored with varying degrees of success. Remote engineering and troubleshooting was found to be exceptionally promising and worthy of further effort. Remote data processing was a valuable addition for a telepresence enabled cruise where a substantial component of the science team was on shore. Remore watch standing and remote launch were both found to be viable though requiring improvement. Technology infrastructure is discussed along with successes, difficulties, and recommendations for future improvement.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1109/OCEANS.2012.6404900},
	author = {Kaiser, C L and Kinsey, J C and Pinner, W and Yoerger, D R and German, C R and Van Dover, C L}
}
@article {Kinsey2011,
	title = {{Assessing the Deepwater Horizon oil spill with the Sentry autonomous underwater vehicle}},
	journal = {2011 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
	year = {2011},
	pages = {261{\textendash}267},
	abstract = {This paper reports the Sentry autonomous underwater vehicle and its deployment on two cruises in response to the Deepwater Horizon oil spill. The first cruise, in June 2010, coupled Sentry with the TETHYS mass spectrometer to track and localize a subsea hydrocarbon plume at a depth of approximately 1100m going at least 30km from the oil spill site. In December 2010, Sentry mapped and photographed deep-sea biological communities for follow-up observations and sampling with the Alvin manned submersible. These cruises demonstrate how robots and novel sensing technologies contributed to the oil spill assessment and the broader impact of technologies developed for basic research.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1109/IROS.2011.6095008},
	author = {Kinsey, J C and Yoerger, D R and Jakuba, M V and Camilli, Rich and Fisher, C R and German, C R}
}
@article {Valentine2010,
	title = {{Asphalt volcanoes as a potential source of methane to late Pleistocene coastal waters}},
	journal = {Nature Geoscience},
	volume = {3},
	number = {5},
	year = {2010},
	pages = {345{\textendash}348},
	abstract = {Every year, natural petroleum seepage emits 0.2{\textendash}2 Tg of oil to the ocean1. Significant oil seepage can build large underwater mounds, consisting of tar deposits with morphologies similar to volcanic lava flows, known as asphalt volcanoes2, 3. Such events are typically accompanied by large fluxes of the greenhouse gas methane4, 5. Marine sediments from the Santa Barbara basin, California, contain a record of elevated methane concentrations6, anoxia and tar deposition7 during the Pleistocene epoch that had been attributed to dissolution of methane hydrates. However, the region is known to have exhibited oil seepage in the past7. Here, we document the discovery of seven extinct asphalt volcanoes off the coast of southern California. The morphology of the deposits and geochemistry of samples taken from the two largest structures supports their classification as asphalt volcanoes, derived from a common source. We estimate that the two structures resulted from seepage of 0.07{\textendash}0.4 Tg of oil, accompanied by the emission of 0.35{\textendash}1.8 Tg of methane. Radiocarbon dating of carbonate deposits entrained with the asphalt indicates formation of the volcanoes between 44 and 31 kyr ago. The timing and volume of erupted hydrocarbons from the asphalt structures can explain some or all of the documented methane release and tar accumulation in the Santa Barbara basin during the Pleistocene.},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle), HOV Alvin (Human Occupied Vehicle)},
	issn = {1752-0894},
	doi = {10.1038/ngeo848},
	url = {http://dx.doi.org/10.1038/ngeo848},
	author = {Valentine, D L and Reddy, C M and Farwell, C and Hill, T M and Pizarro, O and Yoerger, D R and Camilli, R and Nelson, R K and Peacock, E E and Bagby, S C and Clarke, B A and Roman, C N and Soloway, M}
}
@article {Nevala2009a,
	title = {{A new deep-sea robot call Sentry complete first mission}},
	journal = {Oceanus},
	volume = {47},
	number = {2},
	year = {2009},
	pages = {10},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	issn = {0029-8182},
	url = {http://www.whoi.edu/oceanus/viewArticle.do?id=55446{\&}sectionid=1021},
	author = {Nevala, A E and Lippsett, L}
}
@article {Killeen2009,
	title = {{NSF looks ahead with basic ocean research}},
	journal = {Sea Technology},
	volume = {50},
	number = {1},
	year = {2009},
	pages = {27{\textendash}28},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	issn = {0093-3651},
	author = {Killeen, T and Morris, J D}
}
@mastersthesis {LaPointe2009,
	title = {{A parallel hypothesis method of autonomous underwater vehicle navigation}},
	volume = {Ph.D.},
	year = {2009},
	pages = {284},
	school = {Massachusetts Institutte of Technology and Woods Hole Oceanographic Institution},
	type = {phd},
	address = {Cambridge, MA and Woods Hole, MA},
	keywords = {AUV ABE (Autonomous Benthic Explorer), AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1575/1912/2853},
	url = {http://hdl.handle.net/1912/2853},
	author = {LaPointe, C E G}
}
@article {German2008,
	title = {{Hydrothermal exploration with the Autonomous Benthic Explorer}},
	journal = {Deep-Sea Research. Part I: Oceanographic Research Papers},
	volume = {55},
	number = {2},
	year = {2008},
	pages = {203{\textendash}219},
	keywords = {AUV ABE (Autonomous Benthic Explorer), AUV Sentry (Autonomous Underwater Vehicle), ROV DSL-120 (Remotely Operated Vehicle)},
	issn = {0967-0637},
	doi = {10.1016/j.dsr.2007.11.004},
	url = {http://dx.doi.org/10.1016/j.dsr.2007.11.004},
	author = {German, C R and Yoerger, D R and Jakuba, M V and Shank, T M and Langmuir, C H and Nakamura, K I}
}
@inbook {Humphris2008,
	title = {{Vehicles for deep-sea exploration}},
	booktitle = {Encyclopedia of ocean sciences},
	volume = {6},
	year = {2008},
	pages = {4647{\textendash}4659},
	publisher = {Academic Press},
	organization = {Academic Press},
	address = {San Diego, CA},
	keywords = {AUV ABE (Autonomous Benthic Explorer), AUV Sentry (Autonomous Underwater Vehicle), HOV Alvin (Human Occupied Vehicle), ROV DSL-120 (Remotely Operated Vehicle), ROV Jason (Remotely Operated Vehicle)},
	isbn = {9780123744739},
	doi = {10.1016/B978-012374473-9.00734-7},
	url = {http://dx.doi.org/10.1016/B978-012374473-9.00734-7},
	author = {Humphris, S E},
	editor = {Steele, J H}
}
@mastersthesis {Shah2007,
	title = {{Design considerations for engineering autonomous underwater vehicles}},
	volume = {M.S.},
	year = {2007},
	pages = {89},
	school = {Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution},
	type = {phd},
	address = {Cambridge, MA and Woods Hole, MA},
	keywords = {AUV ABE (Autonomous Benthic Explorer), AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1575/1912/1883},
	url = {http://hdl.handle.net/1912/1883},
	author = {Shah, V P}
}
@article {1427,
	title = {{Alvin{\textquoteright}s last ride: Sentry{\textquoteright}s first}},
	journal = {Oceanus},
	volume = {45},
	number = {1},
	year = {2006},
	pages = {17},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle), HOV Alvin (Human Occupied Vehicle)},
	issn = {0029-8182}
}
@article {Fornari2004a,
	title = {{Realizing the dreams of da Vinci and Verne: a diverse fleet of innovative deep-submergence vehicles heralds a new era of ocean exploration}},
	journal = {Oceanus},
	volume = {42},
	number = {2},
	year = {2004},
	pages = {20{\textendash}24},
	keywords = {AUV ABE (Autonomous Benthic Explorer), AUV Sentry (Autonomous Underwater Vehicle)},
	issn = {0029-8182},
	author = {Fornari, D J}
}
@mastersthesis {Jakuba2003,
	title = {{Modeling and control of an autonomous underwater vehicle with combined foil/thruster actuators}},
	volume = {M.S.},
	year = {2003},
	pages = {123},
	school = {Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution},
	type = {phd},
	address = {Cambridge, MA and Woods Hole, MA},
	keywords = {AUV Sentry (Autonomous Underwater Vehicle)},
	doi = {10.1575/1912/2460},
	url = {http://hdl.handle.net/1912/2460},
	author = {Jakuba, M V}
}
