@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 {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}
}
