@article {ISI:000351847600028,
	title = {{Long-term explosive degassing and debris flow activity at West Mata submarine volcano}},
	journal = {GEOPHYSICAL RESEARCH LETTERS},
	volume = {42},
	number = {5},
	year = {2015},
	month = {mar},
	pages = {1480{\textendash}1487},
	type = {Article},
	abstract = {West Mata is a 1200m deep submarine volcano where explosive boninite eruptions were observed in 2009. The acoustic signatures from the volcano{\textquoteright}s summit eruptive vents Hades and Prometheus were recorded with an in situ (similar to 25m range) hydrophone during ROV dives in May 2009 and with local (similar to 5km range) moored hydrophones between December 2009 and August 2011. The sensors recorded low frequency (1-40Hz), short duration explosions consistent with magma bubble bursts from Hades, and broadband, 1-5min duration signals associated with episodes of fragmentation degassing from Prometheus. Long-term eruptive degassing signals, recorded through May 2010, preceded a several month period of declining activity. Degassing episodes were not recorded acoustically after early 2011, although quieter effusive eruption activity may have continued. Synchronous optical measurements of turbidity made between December 2009 and April 2010 indicate that turbidity maxima resulted from occasional south flank slope failures triggered by the collapse of accumulated debris during eruption intervals.},
	keywords = {ROV Jason (Remotely Operated Vehicle)},
	issn = {0094-8276},
	doi = {10.1002/2014GL062603},
	author = {Dziak, R P and Bohnenstiehl, D R and Baker, E T and Matsumoto, H and Caplan-Auerbach, J and Embley, R W and Merle, S G and Walker, S L and Lau, T-K. and Chadwick Jr., W W}
}
@article {Dziak2012,
	title = {{Seismic precursors and magma ascent before the April 2011 eruption at Axial Seamount}},
	journal = {Nature Geoscience},
	volume = {5},
	number = {7},
	year = {2012},
	month = {jul},
	pages = {478{\textendash}482},
	publisher = {NATURE PUBLISHING GROUP},
	address = {NEW YORK; 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA},
	abstract = {Volcanoes at spreading centres on land often exhibit seismicity and ground inflation months to years before an eruption, caused by a gradual influx of magma to the source reservoir1, 2, 3, 4. Deflation and seismicity can occur on time scales of hours to days, and result from the injection of magma into adjacent rift zones5, 6, 7, 8. Volcanoes at submarine rift zones, such as Axial Seamount in the northeast Pacific Ocean, have exhibited similar behaviour9, 10, 11, 12, but a direct link between seismicity, seafloor deformation and magma intrusion has never been demonstrated. Here we present recordings from ocean-bottom hydrophones and an established array of bottom-pressure recorders that reveal patterns of both microearthquakes and seafloor deformation at Axial Seamount on the Juan de Fuca Ridge, before it erupted in April 2011. Our observations show that the rate of seismicity increased steadily during a period of several years, leading up to an intrusion and eruption of magma that began on 6 April 2011. We also detected a sudden increase in seismo-acoustic energy about 2.6 h before the eruption began. Our data indicate that access to real-time seismic data, projected to be available in the near future, might facilitate short-term forecasting and provide sufficient lead-time to prepare in situ instrumentation before future intrusion and eruption events.},
	keywords = {HOV Alvin (Human Occupied Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {1752-0894},
	doi = {10.1038/ngeo1490},
	author = {Dziak, R P and Haxel, J H and Bohnenstiehl, D R and Chadwick, W W and Nooner, S L and Fowler, M J and Matsumoto, H and Butterfield, D A}
}
@article {Chadwick2012a,
	title = {{Submarine landslide triggered by volcanic eruption recorded by in situ hydrophone}},
	journal = {Geology},
	volume = {40},
	number = {1},
	year = {2012},
	month = {jan},
	pages = {51{\textendash}54},
	publisher = {GEOLOGICAL SOC AMER, INC},
	address = {BOULDER; PO BOX 9140, BOULDER, CO 80301-9140 USA},
	abstract = {NW Rota-1 is a submarine volcano in the Mariana volcanic arc that is notable as the site where underwater explosive eruptions were first witnessed in A.D. 2004. After years of continuous low-level eruptive activity, a major landslide occurred at NW Rota-1 in August 2009, triggered by an unusually large eruption that produced 10 times the acoustic energy of the background level of activity. An anomalous earthquake swarm preceded the eruption, suggesting that the sequence started with a magmatic intrusion and associated faulting beneath the volcano. We quantify the size and extent of the landslide using bathymetric resurveys and interpret the timing of events using data from an in situ hydrophone. This is the first instrumental documentation of an earthquake-eruption-landslide sequence at a submarine volcano, and illustrates the close interaction between magmatic activity and mass wasting events in the growth of undersea arc volcanoes.},
	keywords = {ROV Jason (Remotely Operated Vehicle)},
	issn = {0091-7613},
	doi = {10.1130/G32495.1},
	author = {Chadwick, W W and Dziak, R P and Haxel, J H and Embley, R W and Matsumoto, H}
}
@article {Chadwick2008,
	title = {{Direct video and hydrophone observations of submarine explosive eruptions at NW Rota-1 volcano, Mariana arc}},
	journal = {Journal of Geophysical Research},
	volume = {113},
	year = {2008},
	pages = {B08S10},
	keywords = {ROV Jason (Remotely Operated Vehicle)},
	issn = {0148-0227},
	doi = {10.1029/2007JB005215},
	url = {http://dx.doi.org/10.1029/2007JB005215},
	author = {Chadwick, W W and Cashman, K V and Embley, R W and Matsumoto, H and Dziak, R P and de Ronde, C E J and Lau, T K and Deardorff, N D and Merle, S G}
}
