Other ID: 2025 Mendocino RROBS Recovery
Status: Completed
Organization(s): USGS, Woods Hole Coastal and Marine Science Center, Woods Hole Oceanographic Institution
Funding Program(s): Marine Geohazards Sources and Probability (LQ00ENR)
Principal Investigator(s): Nathaniel Miller
Affiliate Investigator(s):
Information Specialist(s): Wayne Baldwin
Data Type(s): Seismics: Sparker, Location-Elevation: Navigation, Seismics: Ocean Bottom Seismometer
Scientific Purpose/Goals: To recover rapid response ocean bottom seismometers (RROBS) deployed offshore of Cape Mendocino to record aftershocks following a Dec 5th 2024 M7.0 earthquake.
Vehicle(s):
Start Port/Location: Eureka, CA
End Port/Location: Eureka, CA
Start Date: 2025-01-20
End Date: 2025-02-02
Equipment Used: Ocean Bottom Seismometer, Sparker , DGPS
Information to be Derived: Ocean bottom seismometer, navigation
Summary of Activity and Data Gathered: Recovered rapid response ocean bottom seismometers (RROBS) deployed offshore of Cape Mendocino that recorded aftershocks following a Dec 5th, 2024, M7.0 earthquake.
Staff: Eric Moore, Wayne Baldwin
Affiliate Staff:
Hannah Brewer (WHOI-OBSIC)
Notes:
Location:
Offshore of Cape Mendocino within 40 Nautical Miles
| Boundaries | |||
|---|---|---|---|
| North: 40.86367967 | South: 40.01078714 | West: -126.07910156 | East: -124.60693359 |
Platform(s):
 Coral Sea |
| Survey Equipment | Survey Info | Data Type(s) | Data Collected |
|---|---|---|---|
| Ocean Bottom Seismometer | Nine Sercel micrOBS instruments were deployed in an array around the calculated epicenter of a Dec 5th, 2024, M7.0 earthquake offshore Mendocino, CA to record aftershocks following the main event. Eight of the nine instruments deployed were successfully recovered. | Ocean Bottom Seismometer | |
| Sparker | The AA Delta sparker was discharged in a circle around the recovery location so that OBS recordings of the shots could be used to improve bottom location control by acoustic ranging calculations during post-processing. Precise shot times were recorded in the hypack navigation. | Sparker | |
| DGPS | DGPS providing ship positions during recovery. | Navigation |
