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Room: Key Ballroom 12

Date: 4/16/2025

Session Time: 8:00 AM to 9:15 AM (local time)

Advances in Reliable Earthquake Source Parameter Estimation

Reliable characterization of earthquake sources is fundamental to ground motion modeling, rupture simulation and statistical analyses. Estimates of earthquake source parameters such as location, magnitude, stress drop, and - for small and moderate earthquakes - their moment tensor components are used to describe and understand earthquake ruptures. Larger earthquakes may require a finite fault model to describe their source processes. Different procedures used in the estimation of source parameters may introduce variability in source, site, and path characterization intrinsic to the method used. These issues increase with the complexity of ruptures and require inversions with uncertainties that are difficult to quantify. The resulting artifacts may mask physical trends and lead to  contradictory interpretations of earthquake scaling relationships and rupture processes. We encourage studies that aim to improve the reliability of earthquake source characterization, including ones that quantify the uncertainties of standard measurements, compare multiple methods or different datasets, and propose improved approaches to characterize complex sources and ruptures.
 

Conveners 

Oliver S. Boyd, U.S. Geological Survey (olboyd@usgs.gov)
Tom Garth, International Seismological Centre (tom.garth@isc.ac.uk)
Keith McLaughlin, Leidos (mclaughlin0kl@gmail.com)
Colin Pennington, Lawrence Livermore National Lab (pennington6@llnl.gov)
Thanh-Son Pham, Australian National University (ThanhSon.Pham@anu.edu.au)
Natalia Poiata, International Seismological Centre (Natalia.Poiata@isc.ac.uk)
Adam Ringler, U.S. Geological Survey (aringler@usgs.gov)
Boris Rösler, Ensenada Center for Scientific Research and Higher Education (boris@cicese.mx)
William L. Yeck, U.S. Geological Survey (wyeck@usgs.gov)
Clara Yoon, U.S. Geological Survey (cyoon@usgs.gov)

Oral Presentations