Room: Ballroom
Date: 4/18/2023
Session Time: 8:00 AM to 5:45 PM (local time)
Earthquake Source Parameters: Theory, Observations and Interpretations
Understanding origin and spatio-temporal evolution of seismicity needs a careful quantitative analysis of earthquake source parameters for large sets of earthquakes in studied seismic sequences. Accurate determination of earthquake hypocenters, focal mechanisms, seismic moment tensors, static stress drop, apparent stress and other earthquake source parameters provides an insight into tectonic stress and crustal strength in the area under study, fault material properties, fault roughness and prevailing fracturing mode (shear/tensile) in the focal zone, and allows investigating earthquake source processes in greater details. In addition, studying relations between static and dynamic source parameters and earthquake size is essential for understanding the self-similarity of rupture processes and scaling laws and for improving our knowledge on ground motion prediction equations.
This session focuses on methodological as well as observational aspects of earthquake source parameters of natural or induced earthquakes in broad range of scales from large natural earthquakes through reservoir-scale microseismicity, to pico- and femto-seismicity from in-situ laboratories and laboratory experiments on rock samples. Presentations of new approaches and methodologies for determination of source characteristics as well as case studies related to analysis of earthquake source parameters in the context of earthquake physics are welcome. We also invite contributions related to scaling of static and dynamic source parameters, to self-similarity of earthquakes and inversions for stress and other physical parameters in the focal zone.
Conveners
Vaclav Vavrycuk, Institute of Geophysics of the Czech Academy of Sciences (vv@ig.cas.cz)
Pavla Hrubcova, Institute of Geophysics of the Czech Academy of Sciences (pavla@ig.cas.cz)
Grzegorz Kwiatek, Deutsches GeoForschungsZentrum GFZ (grzegorz.kwiatek@gfz-potsdam.de)
Satoshi Ide, The University of Tokyo (ide@eps.s.u-tokyo.ac.jp)
German A. Prieto, Universidad Nacional de Colombia (gaprietogo@unal.edu.co)
Poster Presentations
| Participant Role | Details | Action |
|---|---|---|
| Submission | Extension of Aseismic Slip Propagation Theory to Slow Earthquake Migration | View |
| Submission | Not So Planar Faults – On the Impact of Faulting Complexity and Type on Earthquake Rupture Dynamics | View |
| Submission | An Improved Estimation of Stress Drop and its Application on Induced Earthquakes in the Weiyuan Shale Gas Field in China | View |
| Submission | Source Parameter Analysis Indicates Both Hydrous Phase Breakdown and Thermal Shear Runaway Drive Unusual Subduction Seismicity in Central Colombia | View |
| Submission | Global Evaluation of Large Strike-Slip Ruptures Using a Bayesian Estimation of Stress Glut Second Moments | View |
| Submission | Regional Alaska Earthquake Moment Tensors Inverted Using 3D Green’s Functions | View |
| Submission | Seismic Moment Tensors Evaluation of Earthquakes in Central Zagros (Iran) | View |
| Submission | Brune Stress Drop, b-Value, and Modeling Through Finite Element Models (FEM) of Earthquakes that Occurred close to the 30 October 2016, Mw 6.3 Norcia Earthquake | View |
| Submission | MTUQ: A High-Performance Python Package for Moment Tensor Estimation and Uncertainty Quantification | View |
| Submission | Robust Explosion Screening Based on Moment Tensor Angular Distance | View |
| Submission | Characterization of the Southwestern Puerto Rico Seismic Sequence Full Wavefield Decay | View |
| Submission | Characterization of the 2020 Mw 5.7 Magna, Utah Seismic Sequence Full Wavefield Decay | View |
| Submission | A Relative Moment Tensor Inversion Scheme for Local Earthquakes: Application to San Juan Cluster | View |
| Submission | Adjoint Earthquake Source Inversion Method Using P-Wave Spectra and Focal Mechanism Solutions | View |
| Submission | Estimating Faulting Mechanisms From Single-Station Seismic Data | View |
| Submission | Source Stress Drop for Continental Collision Zones: Deviation From “Textbook” Earthquake Models | View |
| Submission | FocMecDR: A Cross-Correlation-Based Double-Ratio Earthquake Focal Mechanism Inversion Algorithm | View |
| Submission | Estimating Magnitudes of the 1868 and 1877 Earthquakes Using Tsunami Records | View |
Earthquake Source Parameters: Theory, Observations and Interpretations [Poster]
Description