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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.  more » « less
Award ID(s):
1658214 2051265 1658070
NSF-PAR ID:
10323641
Author(s) / Creator(s):
; ; ; ; ; ; ;
Date Published:
Journal Name:
Seismological Research Letters
Volume:
93
Issue:
1
ISSN:
0895-0695
Page Range / eLocation ID:
477 to 493
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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