S054
Fifty Years of the Brune Earthquake Source Model: What Have We Learned, and What Is Next? II Posters

Tuesday, 15 December 2020: 04:00-20:59
Poster
Primary Convener:  Rachel E Abercrombie, Boston University, Boston, MA, United States
Conveners:  Annemarie Baltay, U.S. Geological Survey, Earthquake Science Center, Moffett Field, CA, United States, William R Walter, Lawrence Livermore Lab, Livermore, CA, United States and Stefan Bjorklund Nielsen, Durham University, Earth Sciences, Durham, United Kingdom
Primary Liaison:  Rachel E Abercrombie, Boston University, Boston, MA, United States
Chairs:  Annemarie Baltay, U.S. Geological Survey, Earthquake Science Center, Moffett Field, CA, United States, Rachel E Abercrombie, Boston University, Boston, MA, United States, William R Walter, Lawrence Livermore Lab, Livermore, CA, United States and Stefan Bjorklund Nielsen, University of Durham, Department of Earth Sciences, Durham, United Kingdom
OSPA Liaison:  Annemarie Baltay, U.S. Geological Survey, Earthquake Science Center, Moffett Field, CA, United States
 
A Generalized Brune Model to Identify Non-Earthquakes and to Explore Earthquake Scaling (676061)
William R Walter1, Rengin Gok2, Justin Barno1 and Kevin Mayeda3, (1)Lawrence Livermore National Laboratory, Livermore, CA, United States, (2)LLNL, Livermore, CA, United States, (3)Air Force Technical Applications Center Patrick AFB, Patrick AFB, FL, United States
 
What Can the Brune-type Stress Drops of Ridgecrest Aftershocks Tell Us About the Mainshock Rupture? (664416)
Daniel T Trugman, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States
 
Exploring the Dependence of Corner Frequency Estimates on EGF-selection Criteria using the 2019 Ridgecrest Earthquake Sequence (755161)
Arjun Neupane1, Christine J Ruhl1 and Rachel E Abercrombie2, (1)University of Tulsa, Department of Geosciences, Tulsa, OK, United States, (2)Boston University, Boston, MA, United States
 
Finite Source Modeling of the 2019 Ridgecrest Aftershock Sequence (701729)
Jose Magana1, Douglas Scott Dreger1 and Taka'aki Taira2, (1)University of California Berkeley, Berkeley, CA, United States, (2)Berkeley Seismological Laboratory, UC Berkeley, Earth and Planetary Science, Berkeley, CA, United States
 
Stress drop and ground-motion source comparison of the July 2019 Ridgecrest earthquake sequence: A community validation study (761522)
Annemarie Baltay1, Grace Alexandra Parker1 and Rachel E Abercrombie2, (1)U.S. Geological Survey, Earthquake Science Center, Moffett Field, CA, United States, (2)Boston University, Boston, MA, United States
 
Stress drop estimation from source spectra: Resolution limits and consistency between different studies. (757358)
Xiaowei Chen1, Colin Pennington1, Rachel E Abercrombie2, Jiewen Zhang3 and Qimin Wu4, (1)University of Oklahoma Norman Campus, School of Geosciences, Norman, OK, United States, (2)Boston University, Boston, MA, United States, (3)University of Oklahoma, School of Geosciences, Norman, OK, United States, (4)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
 
Does Earthquake Stress Drop Increase With Depth? (684973)
Rachel E Abercrombie, Boston University, Boston, MA, United States, Daniel T Trugman, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States, Peter M Shearer, Univ California San Diego, La Jolla, CA, United States, Xiaowei Chen, The University of Oklahoma, School of Geology and Geophysics, Norman, OK, United States, Jiewen Zhang, University of Oklahoma, School of Geosciences, Norman, OK, United States, Colin Pennington, University of Oklahoma Norman Campus, School of Geosciences, Norman, OK, United States, Jeanne Hardebeck, USGS, Menlo Park, CA, United States and Christine J Ruhl, University of Tulsa, Department of Geosciences, Tulsa, OK, United States
 
A global-optimization-based spectral decomposition method and its application to resolving source parameters of small earthquakes at Parkfield (691487)
Jiewen Zhang, University of Oklahoma Norman Campus, School of Geosciences, Norman, OK, United States, Xiaowei Chen, The University of Oklahoma, School of Geology and Geophysics, Norman, OK, United States and Rachel E Abercrombie, Boston University, Boston, MA, United States
 
A Source Model for Earthquakes near the Nucleation Dimension (711077)
Camilla Cattania, Massachusetts Institute of Technology, Cambridge, MA, United States
 
Elastic Impacts of Fault Zone Structures as a Physical Alternative to the Brune-Haskell Model (697982)
Victor C Tsai, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States and Greg Hirth, Brown Univeristy, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States
 
Magnitude of repeating earthquakes due to slip over the same patch: implications on stress drop and rupture initiation. (698472)
Sofia Cubillos and German A Prieto, Universidad Nacional de Colombia, Departamento de Geociencias, Bogota, Colombia
 
Source Spectra of Intermediate-depth and Deep Earthquakes in the Tonga Subduction Zone (686510)
Dongdong Tian1, Wei Wang2, Fan Wang1 and Songqiao Shawn Wei1, (1)Michigan State University, Department of Earth and Environmental Sciences, East Lansing, MI, United States, (2)University of Southern California, Los Angeles, United States
 
Stress Drops of Inland Crustal Earthquake Sequences in Japan based on the S-wave Coda Spectral Ratio Method (732451)
Kazuhiro Somei1, Kimiyuki Asano2 and Tomotaka Iwata2, (1)Graduate School of Science, Kyoto University, Kyoto, Japan, (2)Disaster Prevention Research Institute, Kyoto University, Uji, Japan
 
Simultaneous estimation of stress drop and rupture directivity of small earthquakes in Japan: prevalence of asymmetrical rupture leads to systematic estimation error of stress drop (714012)
Keisuke Yoshida, Tohoku University, Sendai, Japan
 
Brune Stress Drop and Rupture Directivity During the 2016-2018 Amatrice-Visso-Norcia Seismic Sequence: Key Parameters for Earthquake Source Physics (677607)
Giovanna Calderoni, INGV, Roma, Italy and Rachel E Abercrombie, Boston University, Boston, MA, United States
 
Source Properties of Moderate-Magnitude Earthquakes to Quantify Variations in Seismogenic characteristics Along the Alpine Fault, New Zealand. (673675)
Ilma Juarez-Garfias, Victoria University of Wellington, Wellington, New Zealand, Emily Warren-Smith, GNS Science, Lower Hutt, New Zealand, John Townend, Victoria University Wellington, Wellington, New Zealand and Rachel E Abercrombie, Boston University, Boston, MA, United States
 
Two empirical double-corner frequency source spectra and their physical implications (703684)
Chen Ji, University of California Santa Barbara, Santa Barbara, CA, United States and Ralph J Archuleta, Univ California Santa Barbara, Santa Barbara, CA, United States
 
Characterizing multi-subevents earthquakes using Brune source model (678301)
Meichen Liu1, Yihe Huang1 and Jeroen Ritsema2, (1)University of Michigan Ann Arbor, Ann Arbor, MI, United States, (2)Univ Michigan, Ann Arbor, MI, United States
 
Corner Frequency vs Finite-Source Stress Drop Estimates (676781)
Douglas Scott Dreger, University of California Berkeley, Berkeley, CA, United States, Luca Malagnini, National Institute of Geophysics and Volcanology, Rome, Italy and Charusheela Garapaty, University of California Santa Barbara, Santa Barbara, United States
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