Room: Ballroom
Date: 4/20/2023
Session Time: 8:00 AM to 5:45 PM (local time)
It’s All About Relocation, Relocation, Relocation
The current capability to locate smaller seismic events has been boosted by unprecedented numbers of nodal networks and improved local monitoring throughout the world, yet the challenge still remains to accurately estimate an earthquake’s hypocenter. Many relocation algorithms and processing techniques have been implemented to determine absolute and relative locations. The methods of measuring events have not changed significantly but the modern tools and higher sample rates introduce a new opportunity to refine our error estimates. The quantification of error in a location and the tradeoffs between site corrections, velocity model and other constraints applied to the location algorithm are rarely compared across multiple techniques or catalogs. The comparison of historical events and modern relocated events is made more difficult by the changing methods and data availability with time. The quantification of how modern studies deal with such divergence is one that has yet to be strongly examined. As we continue to look at the future of locating smaller seismic events we want to accurately estimate the hypocenter location while improving our understanding of the historical context of earthquake locations.
In this session we invite contributions that are pushing the science of locating earthquakes through new measurement techniques, the development of new location algorithms, the comparison of different methods and comparisons or combinations of the locations of historical and modern catalogs. The goal is to look at the accuracy of modern techniques and understand the errors associated with locating targeted events or event clusters.
Conveners
Cleat Zeiler, Nevada National Security Site (zeilercp@nv.doe.gov)
Michelle Scalise, Nevada National Security Site (scalisme@nv.doe.gov)
Ting Chen, Los Alamos National Laboratory (tchen@lanl.gov)
Moira Pyle, Lawrence Livermore National Laboratory (pyle4@llnl.gov)
Leiph Preston, Sandia National Laboratory (lpresto@sandia.gov)
Poster Presentations
| Participant Role | Details | Action |
|---|---|---|
| Submission | Relocation of Earthquakes in the Southern Korean Peninsula During 2017 and 2020 Using a 3D Velocity Model | View |
| Submission | WITHDRAWN Uncertainty in Source Location Estimates Using a Single Seismic Station | View |
| Submission | A Comparison of High Precision Relocation Methods Applied to the June 2021 Mount Hood, Oregon Sequence | View |
| Submission | Absolute Relocations of a Machine Learning Catalog of the Utah Magna Earthquake Sequence Using Nonlinloc-Ssst-Coherence | View |
| Submission | Minimum 1d P- and S- Velocity Models Derived From Aftershocks of the March 31st, 2020 Stanley, Idaho Earthquake | View |
It’s All About Relocation, Relocation, Relocation [Poster]
Description