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Analysis of the Magnitude 5.7 Parker Butte Earthquake Near Yerington Nevada, Using High Precision Relocation, InSAR, GPS, and Strong Motion Data

Description: 

On Monday December 9th, 2024, at about 3:08PM local time, a moment magnitude 5.7 earthquake shook northwestern Nevada. The epicenter was about 24 km NNE of Yerington, Nevada where moderate shaking was felt. Light shaking was reported in Reno, NV, Carson City, NV and felt as far away as Sacramento CA. Following the earthquake, the Nevada Seismological Laboratory (NSL) and Nevada Geodetic Laboratory (NGL) in the Nevada Bureau of Mines and Geology (NBMG) initiated a coordinated response to gather perishable geologic observations and seismic and geodetic data. We deployed 5 temporary seismometers to monitor the ongoing seismicity and reoccupied several dozen stations in the Mobile Array of GPS for Nevada Transtension (MAGNET). In the 60 days after the mainshock, we’ve located over 1000 aftershocks including five events from local magnitudes 3.5 to 4.2. Preliminary coseismic displacement from geodetic observations were ~1 cm at the GPS stations nearest the epicenter (~13 km). This sequence has provided an opportunity to apply high precision location, InSAR and GPS analysis, and strong motion data to examine the fault structure, rupture patterns and ground motions of this area. We will be presenting our preliminary analyses using these methods and our initial interpretations. This knowledge is valuable for exploring the unique rupture characteristics, subsequent ground motions, and associated seismic hazards of earthquakes in the north-central Walker Lane Shear Zone.

Session: Late-breaking on Recent and Future Large Earthquakes - I

Type: Oral

Date: 4/15/2025

Presentation Time: 10:45 AM (local time)

Presenting Author: Kyren

Student Presenter: No

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