Meeting Abstracts

The SCEC collaboration emphasizes the connections between information gathering by sensor networks, fieldwork, and laboratory experiments; knowledge formulation through physics-based, system-level modeling; improved understanding of seismic hazard; and actions to reduce earthquake risk and promote resilience. Use the form below to search and view all poster and invited talk abstracts submitted to this meeting.

Results 51-65 of 65

SCEC ID	Category	Title and Authors	SCEC Award
Poster 237	Ridgecrest	Vertical Deformation of the 2019 M6.4 Searles Valley and M7.1 Ridgecrest Earthquakes Bridget Smith-Konter, Lauren Ward, Xiaohua Xu, David Sandwell On July 4-5, 2019, the M6.4 and M7.1 Searles Valley and Ridgecrest earthquake sequence ruptured a geometrically complex 50 km long system of faults within the Eastern California Shear Zone (ECSZ). These conjugate events resulted in several meters... more	19161
Poster 244	Ridgecrest	Engineering and Geological Effects of the July 2019 Ridgecrest Earthquake Sequence Jonathan Stewart, Scott Brandenberg, Pengfei Wang, Chukwuebuka Nweke, Kenneth Hudson, Silvia Mazzoni, Yousef Bozorgnia, Kenneth Hudnut, Craig Davis, Sean Ahdi, Farzin Zareian, Jawad Fayaz, Rich Koehler, C Chupik, Ian Pierce, A Williams, Sinan Akciz, Martin Hudson, T Kishida, Benjamin Brooks, Ryan Gold, Daniel Ponti, Katherine Scharer, Devin McPhillips, T Ericksen, J Hernandez, Jason Patton, Brian Olson, Timothy Dawson, Jerry Treiman, Christopher DuRoss, Kelly Blake, Jeffrey Bachhuber, Christopher Madugo, J Sun, Andrea Donnellan, Gregory Lyzenga, Erik Conway, Christine Goulet The Ridgecrest Earthquake sequence included a foreshock event on July 4 2019 (M6.4) and a M7.1 mainshock event on July 5 2019. These events occurred in the Eastern California Shear Zone, near Indian Wells Valley, south of China Lake and west of... more
Poster 247	Ridgecrest	Prediction of Ground-Motion Time-Series at an arbitrary location using Gaussian Process Interpolation: Application to the Ridgecrest Earthquake Aidin Tamhidi, Nicolas Kuehn, Yousef Bozorgnia, Ertugrul Taciroglu, Tadahiro Kishida Every seismic event is recorded only at a finite number of locations. In many engineering applications a variety of seismic intensity measures (IMs), typically peak ground acceleration or response spectrum, are required as input, that are estimated... more
Poster 250	Ridgecrest	Automated processing of the 2019 Ridgecrest, California, earthquake sequence ground motions Eric Thompson, Mike Hearne, John Rekoske, Heather Schovanec, Morgan Moschetti, Brad Aagaard, Grace Parker We describe ongoing efforts at the U.S. Geological Survey (USGS) to develop automated open-source ground motion processing software. Within the USGS, numerous projects have highlighted the need for standardized and automated ground-motion processing... more
Poster 266	Ridgecrest	Anti-similar aftershocks in the Ridgecrest, California earthquake sequence Daniel Trugman, Zachary Ross, Paul Johnson Similar earthquakes - pairs of events with highly similar waveforms - rupture overlapping or adjacent fault patches with similar slip mechanisms. Close examination of the characteristics of similar earthquake pairs have been used for a variety of... more
Poster 238	Ridgecrest	NOTA Performance During 2019 Ridgecrest Earthquake Sequence Christian Walls, Doerte Mann, David Mencin, Kathleen Hodgkinson, Shawn Lawrence, Andre Basset, Ryan Turner, Karl Feaux, Glen Mattioli The Ridgecrest earthquake sequence occurred within the footprint of the Network of the Americas (NOTA), which federates the former EarthScope Plate Boundary Observatory, TLALOCNet in Mexico, and COCONet in the Caribbean. NOTA is operated by UNAVCO... more
Poster 234	Ridgecrest	Modeling of co- and early postseismic deformation due to the 2019 Ridgecrest earthquake sequence Kang Wang, Roland Bürgmann On July 4th, 2019, a Mw 6.4 earthquake struck the Searles Valley near the town of Ridgecrest in southern California. The Mw 6.4 earthquake was followed by a Mw 7.1 event about 30 hours later. Both the Mw 6.4 foreshock and the Mw 7.1 mainshock... more
Poster 223	Ridgecrest	Detailed fracture map and orthophoto of the southern portion of the M6.4 2019 Ridgecrest Earthquake Alana Williams, Ian Pierce, Rich Koehler, Sinan Akciz, Colin Chupik, Jayne Bormann An M6.4 foreshock struck on July 3, 2019, near Ridgecrest, California, and ruptured bilaterally. The mainshock, An M7.1 event, followed this earthquake on July 5. Between July 4 and July 9, low altitude aerial photos were acquired along ~12 km of... more
Poster 240	Ridgecrest	Aftershocks of the Ridgecrest earthquake sequence on four dense fiber seismic arrays Ethan Williams, Zhongwen Zhan, Zefeng Li, Martin Karrenbach, Thomas Coleman, Lisa LaFlame, Steve Cole, Victor Yarsev Recent advances with distributed acoustic sensing (DAS) have demonstrated the ability of pre-existing telecommunications cables to be repurposed as dense arrays of linear strainmeters, effective for scalable seismic monitoring. The extensive fiber... more
Poster 280	Ridgecrest	Dynamic stress perturbation on the M7.1 Ridgecrest earthquake fault from the preceding M6.4 event: a theoretical study with dynamic rupture models Baoning Wu, David Oglesby, Jordan Cortez, Christodoulos Kyriakopoulos The 2019 Ridgecrest earthquake sequence included a M6.4 event and a M7.1 event occuring 33 hours apart, rupturing two perpendicular faults. Questions arise about how much the M6.4 event contributed to the M7.1 rupture. While the detailed rupture... more
Poster 258	Ridgecrest	Imaging the rupture process of the 2019 M6.4 and M7.1 Ridgecrest Earthquakes using local seismic stations in Southern California Yuqing Xie, Lingsen Meng The M6.4 and M7.1 Ridgecrest earthquakes shocked downtown LA in July 2019. The earthquakes draw many attentions since they are among the largest earthquakes in Southern California over the past two decades. They are recorded by the dense strong... more
Poster 227	Ridgecrest	Surface rupturing and triggered slip on nearby faults from the Ridgecrest earthquakes revealed by InSAR Xiaohua Xu, Lauren Ward, Bridget Smith-Konter, Chris Milliner, Peng Fang, Yehuda Bock, David Sandwell We analyzed repeat-pass Sentinel-1 and ALOS-2 synthetic aperture radar images to measure broad-area surface deformation and high-resolution surface rupturing from the combined July 4-5 2019 Ridgecrest earthquake sequence. Phase gradient maps were... more	19083
Poster 230	Ridgecrest	ARIA Rapid Response Products for the 2019 Ridgecrest Earthquakes Sang-Ho Yun, Jung Liang, Eric Fielding, Cunren Liang, Susan Owen, Hook Hua, Marjorie Lucas The Advanced Rapid Imaging and Analysis (ARIA) team at NASA's Jet Propulsion Laboratory in Pasadena, California, created this map depicting areas that are likely damaged as a result of the recent major earthquakes. The color variation from... more
Poster 257	Ridgecrest	Automated moment tensor inversion using 3D Green’s Functions: Application to the LA basin and the 2019 Ridgecrest sequence Zhongwen Zhan, Xin Wang Earthquake focal mechanisms put primary control on the distribution of ground motion, and also bear on the stress state of the crust. Most routine focal mechanism catalogs still use 1D velocity models in inversions, which may introduce large... more	19011
Poster 226	Ridgecrest	Three-dimensional rupture patterns of the 2019 Ridgecrest, California earthquake sequence revealed by correlation of high-resolution WorldView optical satellite imagery Robert Zinke, James Hollingsworth, Gilles Peltzer, Eric Fielding, James Dolan, Chris Milliner, Yousef Bozorgnia, Alexandra Sarmiento We measure horizontal and vertical surface deformation from the 4 July 2019 MW 6.4 and 5 July 2019 MW 7.1 earthquake sequence near Ridgecrest, CA using correlation of high-resolution WorldView optical satellite imagery. Specifically, we correlated... more

The Southern California Earthquake Center is committed to providing a safe, productive, and welcoming environment for all participants. We take pride in fostering a diverse and inclusive SCEC community, and therefore expect all participants to abide by the SCEC Activities Code of Conduct.

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