Room: 202A/B
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)
Oral Presentations
| Participant Role | Details | Start Time | Minutes | Action |
|---|---|---|---|---|
| Submission | Leveraging the Iran Regional Moment Tensor database to estimate parameter uncertainties in 1D and 3D Earth models | 08:00 AM | 15 | View |
| Submission | Time-Domain Determination of Regional Wave Propagation Characteristics and Earthquake Source Spectra: Application to the Ridgecrest, California Earthquakes | 08:15 AM | 15 | View |
| Submission | Use of the Second Seismic Moments to Estimate Source Parameters and Rupture Directivity of Moderate Earthquakes in Central Italy | 08:30 AM | 15 | View |
| Submission | Duration and Dynamic Stress Drop During the Initial Rupture “Breakaway” Stage of Ridgecrest Earthquakes | 08:45 AM | 15 | View |
| Submission | Early Parameters of Seismograms: What Influences Them and Are They Useful in Understanding Earthquake Determinism? | 09:00 AM | 15 | View |
| Other Time | Break | 09:15 AM | 45 | |
| Submission | Challenges in Quantifying Small Earthquakes | 10:00 AM | 15 | View |
| Submission | On the Limitations of Spectral Source Parameter Estimation for Minor and Microearthquakes | 10:15 AM | 15 | View |
| Submission | Effects of Failure Parameterization on Pre- and Co-Seismic Earthquake Rupture | 10:30 AM | 15 | View |
| Submission | Yielding and Fracture in the Nucleation of Frictional Fault Slip | 10:45 AM | 15 | View |
| Submission | Four Granites in the Lab: Acoustic Emission During the Uniaxial Loading | 11:00 AM | 15 | View |
| Other Time | Break | 11:15 AM | 165 | |
| Submission | Review of the Seismicity of Mars | 02:00 PM | 15 | View |
| Submission | The 2017 Pohang, Korea, Earthquake and its Largest Aftershocks: Stress Drop and Source Complexity Suggestive of Fluid-faulting Interaction | 02:15 PM | 15 | View |
| Submission | Shallow Serpentinization Promoted the Up-dip High-Frequency Seismic Wave Radiation During the 2021 Mw8.1 Kermadec Megathrust Earthquake | 02:30 PM | 15 | View |
| Submission | New Empirical Source Scaling Laws for Crustal Earthquakes Incorporating the Fault Dip Angle and Seismogenic Thickness Effects | 02:45 PM | 15 | View |
| Submission | Slow Earthquake Scaling Revisited | 03:00 PM | 15 | View |
| Other Time | Break | 03:15 PM | 75 | |
| Submission | The Devastating 2022 M6.2 Afghanistan Earthquake: Challenges, Processes and Implications | 04:30 PM | 15 | View |
| Submission | 2021 and 2022 North Coast California Earthquake Sequences and Fault Complexity in the Vicinity of the Mendocino Triple Junction | 04:45 PM | 15 | View |
| Submission | Bayesian Source Mechanism Inversion and Uncertainty Quantification With Dense Array Strong Motion Data for 2022 Luding Earthquake in China’s Sichuan | 05:00 PM | 15 | View |
| Submission | Insights Into Volcanic Rift-Tectonic Fault Interactions From Moment Tensor Analysis of the Seismicity Prior to the 2021 and 2022 Fagradalsfjall Eruptions in Iceland | 05:15 PM | 15 | View |
| Submission | Observations of the 2017 Earthquake Swarm in SW Iceland Used for Mapping Stress Prior to the 2021 Fagradalsfjall Eruption | 05:30 PM | 15 | View |
| Total: | 585 Minute(s) |
Earthquake Source Parameters: Theory, Observations and Interpretations
Description