@article {RN87,
	title = {Passive acoustic records of seafloor methane bubble streams on the Oregon continental margin},
	journal = {Deep Sea Research Part II: Topical Studies in Oceanography},
	volume = {150},
	year = {2018},
	pages = {210-217},
	type = {Journal Article},
	abstract = {We present acoustic records of methane bubble streams recorded ~10 km southwest of Heceta Bank on the Oregon continental margin using an autonomous hydrophone. The hydrophone was deployed at 1228 m water depth via a Remotely Operated Vehicle (ROV) during the E/V Nautilus expedition (NA072) in June 2016. Bubble sound is produced by detachment of the gas bubble from the end of a tube or conduit which causes the bubble to oscillate, producing a sound signal. Despite persistent ship propeller and ROV noise, the acoustic signature of the overall bubble seep site can be seen in the hydrophone record as a broadband (1.0 {\textendash} 45 kHz) series of short duration (~10{\textendash}20 ms) oscillatory signals that occur in clusters lasting 2{\textendash}3 s. The frequency of an individual bubble{\textquoteright}s oscillation is proportional to the bubble{\textquoteright}s radius; estimates here of bubble radii are consistent with bubble sizes observed in ROV still images. Acoustic signal loss models imply bubble sounds might be recorded over an area of seafloor from ~300 {\textendash} 3.2 {\texttimes} 104 m2. This study represents a first-step in attempting to identify and quantify deep-ocean bubble stream sounds using passive acoustic techniques.},
	keywords = {Bubble streams, E/V Nautilus Cruise ID NA072, Gas flux, Methane seep, Passive acoustics},
	issn = {0967-0645},
	doi = {10.1016/j.dsr2.2018.04.001},
	url = {http://www.sciencedirect.com/science/article/pii/S096706451730084X},
	author = {Dziak, R. P. and Matsumoto, H. and Embley, R. W. and Merle, S. G. and Lau, T. K. and Baumberger, T. and Hammond, S. R. and Raineault, N.}
}
@article {RN2,
	title = {THE RECENT VOLCANIC HISTORY OF AXIAL SEAMOUNT Geophysical Insights into Past Eruption Dynamics with an Eye Toward Enhanced Observations of Future Eruptions},
	journal = {Oceanography},
	volume = {31},
	number = {1},
	year = {2018},
	pages = {114-123},
	type = {Journal Article},
	abstract = {To understand the processes that form oceanic crust as well as the role of submarine volcanoes in exchanging heat and chemicals with the ocean and in supporting chemosynthetic biological communities, it is essential to study underwater eruptions. The world{\textquoteright}s most advanced underwater volcano observatory{\textemdash}the Ocean Observatories Initiative Cabled Array at Axial Seamount{\textemdash}builds upon ~30 years of sustained geophysical monitoring at this site with autonomous and remote systems. In April 2015, only months after the Cabled Array{\textquoteright}s installation, it recorded an eruption at Axial Seamount, adding to the records of two prior eruptions in 1998 and 2011. Between eruptions, magma recharge is focused beneath the southeast part of the summit caldera, leading to steady inflation and increasing rates of seismicity. During each eruption, the volcano deflates over days to weeks, coincident with high levels of seismicity as a dike is emplaced along one of the volcano{\textquoteright}s rifts and lava erupts on the seafloor. Cabled Array seismic data show that motions on an outward-dipping ring fault beneath the caldera accommodate the inflation and deflation. Eruptions appear to occur at a predictable level of inflation; hence, it should be possible to time deployments of additional cabled and autonomous instrumentation to further enhance observations of the next eruption.},
	issn = {1042-8275},
	doi = {10.5670/oceanog.2018.117},
	url = {<Go to ISI>://WOS:000427367300017},
	author = {Wilcock, W. S. D. and Dziak, R. P. and Tolstoy, M. and Chadwick, W. W. and Nooner, S. L. and Bohnenstiehl, D. R. and Caplan-Auerbach, J. and Waldhauser, F. and Arnulf, A. F. and Baillard, C. and Lau, T. K. and Haxel, J. H. and Tan, Y. J. and Garcia, C. and Levy, S. and Mann, M. E.}
}
