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Nodal Seismometer Recordings of Aftershocks of the 5 December 2024 M 7.0 Offshore Cape Mendocino, California Earthquake

At 10:44:21 local time on December 5, 2024, a M 7.0 earthquake occurred approximately 70 km southwest of Ferndale, California, just west of the Mendocino Triple Junction. Starting the next day, the U.S. Geological Survey deployed nodal seismometers (nodes) in the Eel River Valley, near Cape Mendocino, and along the California Highway 101 corridor to compliment local permanent stations of the Northern California Seismic Network (NCSN). The USGS deployed a total of 114 nodal stations, each consisting of a SmartSolo IGU-16HR 3-component nodal seismometer that recorded continuously at a 500-Hz sampling rate and was time-corrected using GPS. The nodal stations, combined with the permanent network, provided more densely spaced recordings of events in the region, with the combined network recording 295 M 2.5+ aftershocks in the following ~ five weeks. Fourteen of the aftershocks were greater than M 4.0, as determined by the NCSN (https://ncedc.org/ncsn). The combined dense nodal and permanent network stations are expected to make it possible to significantly increase the number of events in, and the accuracy of, the current earthquake catalog for the region during the deployment period of approximately December 06 through January 16, 2025.

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Author(s) Mark R Goldman orcid, Rufus D Catchings orcid, Robert R Sickler orcid, Joanne H Chan orcid, Coyn J Criley, Jemile E Erdem orcid, Theresa M Sawi, Kari Stockdale, Robert McPherson, Luther Strayer, Simone I Yeager
Publication Date 2025-03-07
Beginning Date of Data 2024-12-06
Ending Date of Data 2025-01-16
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DOI https://doi.org/10.5066/P13WVAC5
Citation Goldman, M.R., Catchings, R.D., Sickler, R.R., Chan, J.H., Criley, C.J., Erdem, J.E., Sawi, T.M., Stockdale, K., McPherson, R., Strayer, L., and Yeager, S.I., 2025, Nodal Seismometer Recordings of Aftershocks of the 5 December 2024 M 7.0 Offshore Cape Mendocino, California Earthquake: U.S. Geological Survey data release, https://doi.org/10.5066/P13WVAC5.
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Metadata Date 2025-03-07
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Citations of these data No citations of these data are known at this time.
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License http://www.usa.gov/publicdomain/label/1.0/
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Harvest Source: ScienceBase
Harvest Date: 2026-04-24T04:52:10.684Z