@article{0cd3da62c7574b5faa4469a1847263c2,
title = "The Pacific OBS Research into Convecting Asthenosphere (ORCA) Experiment",
abstract = "The Pacific ocean-bottom seismometer (OBS) Research into Convecting Asthenosphere (ORCA) experiment deployed two 30-station seismic arrays between 2018 and 2020—a US contribution to the international PacificArray project. The “Young ORCA” array deployed on ∼40 Ma central Pacific seafloor had a ∼68% data recovery rate, whereas the “Old ORCA” array deployed on ∼120 Ma southwest Pacific seafloor had a ∼80% recovery rate. We detail here the seismic data quality, spectral characteristics, and engineering challenges of this experiment. We provide information to assist users of this dataset, including OBS orientations and tables of daily data quality for all channels. Preliminary analysis illustrates the utility of these data for surface- and body-wave seismic imaging.",
author = "Eilon, {Zachary C.} and Gaherty, {James B.} and Lun Zhang and Joshua Russell and Sean McPeak and Joseph Phillips and Forsyth, {Donald W.} and G{\"o}ran Ekstr{\"o}m",
note = "Funding Information: This work was funded by National Science Foundation (NSF) grants OCE-1658491, OCE-1658214, OCE-1658070, and OCE-2051265. The broadband ocean-bottom-seismometer (BBOBS) instruments were provided by the Scripps Institution of Oceanography (SIO) ocean-bottom-seismometer (OBS) facility under Jeffrey Babcock, with oversight and logistical support from John Collins and Masako Tominaga at the OBS Instrument Center. The authors are deeply grateful to techs that sailed on these cruises: Mark Gibaud, Ernest Aaron, Sean McPeak, Justin Smith, and Pete Liljegren. The authors are indebted to the captains and crews of the R/V Kilo Moana and R/V Roger Revelle, ResTechs and OTGs (Julianna Diehl, Jeff Kochs, Trevor Young, Rob Palomares, Mary Huey, Andrew Naslund, Josh Manger, and Royhon Agostine), and well as the ship scheduling and logistical assistance from Bruce Applegate and Hannah Delapp, who enabled us to conduct safe science during a pandemic. Finally, the authors thank the other members of the science parties: Helen Janiszewski, William Hawley, Brennan Brunsvik, Lindsay Buff, Caroline Eakin, Gareth Fabbro, Isabella Gama, Karen Godfrey, Eva Golos, Carlos Gomez, Rachel Hatch, Emily Hopper, Yuki Kawano, Aditya Khare, Taylor Lee, Jumpei Maruyama, Marshal McGurk, Stephen Mosher, Erica Nathan, Engielle Mae Paguican, Mohan Pan, Ashley Rivera, Kaelynn Rose, Theresa Sawi, Eivind Straume, Veselina Yakimova, and Kim Chu-Fang Yang. Publisher Copyright: {\textcopyright} Seismological Society of America.",
year = "2022",
month = jan,
day = "1",
doi = "10.1785/0220210173",
language = "English (US)",
volume = "93",
pages = "477--493",
journal = "Seismological Research Letters",
issn = "0895-0695",
publisher = "Seismological Society of America",
number = "1",
}