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 301-320 of 320

SCEC ID	Category	Title and Authors	SCEC Award
Poster 146	FARM	Systematic variations of earthquake source time function from clustering analysis Jiuxun Yin, Zefeng Li, Marine Denolle Source Time Functions (STFs) characterize temporal evolution of moment release during earthquake rupture and exhibits tremendous inter-event variations. In this study, we introduce a Dynamic Time Warping (DTW) technique to quantitatively cluster... more
Poster 304	CEO	Earthquake Notification Service (ENS): Present Capabilities and Next-Generation Product Ideas Clara Yoon, Stan Schwarz, Valerie Thomas The USGS is planning to develop the next-generation Earthquake Notification Service (ENS). ENS, available at https://earthquake.usgs.gov/ens/, is a free USGS product that provides accurate, reliable, timely, 24/7 earthquake information to over 400,... more
Poster 130	SAFS	New interpretations at the Ranch Center and Key Slide slip rate sites, Mojave section of the San Andreas Fault, Palmdale, CA Elaine Young, Katherine Scharer, Amanda Keen-Zebert, Emery Anderson-Merritt, Eric Cowgill, Ray Weldon The Holocene slip rate on the ~100km long Mojave section of the San Andreas Fault (MSAF) is not well known, despite its importance for understanding apparent discrepancies between geologic and geodetic slip rates along this fault section and... more	17231
Poster 199	SDOT	Drought Induced Groundwater Loss in and Around Great Salt Lake, Utah, Inferred from 3D GPS Displacements Zachary Young, Corné Kreemer The American Southwest experienced a massive drought between 2011 and 2016 with significant impacts to regional water storage. During this period, the Great Salt Lake (GSL), Utah, lost 1.85 meters of water and Global Positioning System (GPS) data... more
Poster 301	CS	Cloud Computing and Big Data – Using the Southern California Earthquake Data Center (SCEDC) and the Southern California Seismic Network (SCSN) Products and Services for Earthquake Research Ellen Yu, Prabha Acharya, Aparna Bhaskaran, Shang-Lin Chen, Jennifer Andrews, Valerie Thomas, Zachary Ross, Egill Hauksson, Robert Clayton Southern California Earthquake Data Now in the Amazon Cloud • At the date of this abstract, we have uploaded one year (2016,180 to 2017,180). Efforts to load remaining years (1999-present) into the archive are are ongoing. AWS bucket name is s3... more	19061
Poster 184	FARM	Inter-event slow-slip process for the fore- to Main triggering of the 2016 Komamoto earthquake sequence PKU Yue Cascade and preparation processes could interpret the triggering between fore- and mainshocks, which determine the possibility of using foreshocks for short term predictions. Discriminate between these processes are difficult due to rare near field... more
Poster 132	SAFS	Evidence for inactivity since ~100 ka on the northern route of the San Andreas fault, southern California Doug Yule, Jonathan Matti, Katherine Kendrick, Richard Heermance From San Bernardino to Indio, CA, the San Andreas fault (SAF) follows two distinct routes. A northern route (NR) follows the Mill Creek and Mission Creek strands and a southern route (SR) follows the San Bernardino, Banning, and Garnet Hill strands... more
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 089	Seismology	Quantifying preparation process of large earthquakes: Damage localization and coalescent dynamics Ilya Zaliapin, Yehuda Ben-Zion We attempt to track and quantify preparation processes leading to large earthquakes with data of earthquake and acoustic emission (AE) catalogs using two complementary analyses. (a) Localization of brittle deformation manifested by evolving... more	19063
Poster 034	EFP	Unified hydromechanical and nucleation models for induced seismicity in Western Oklahoma and South-Central Kansas Guang Zhai, Manoochehr Shirzaei, Michael Manga Induced seismicity has expanded into south-central Kansas, an area with low risk of damaging natural earthquakes (Peterie et al., 2018, GRL). Historically, the region has an average of one M3.0+ earthquake every one or two years. The rapid increase... 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 088	Seismology	Resolving the spatiotemporal variability of small earthquake source parameters at Parkfield and their relationship with 2004M6 Parkfield earthquake Jiewen Zhang, Xiaowei Chen, Rachel Abercrombie Parkfield has long been a natural, well-studied laboratory for investigating spatial and temporal changes in fault properties and their relation to large earthquakes. Previous studies have found possible changes in stress drop for small events with... more
Poster 006	GM	Developing a 3-D crustal velocity model for central Oklahoma Shuo Zhang, Hejun Zhu During the last decade, there are increasing numbers of earthquakes recorded in Oklahoma, most of which are small earthquakes. In order to study these earthquakes, a lot of local station networks have been deployed in this region, such as GS, YW, OK... more
Poster 181	FARM	Evaluating Seismicity Patterns in Western China Yingying Zhang, Walter Mooney Ebel and Chambers (2016) found that some modern M ≥ 4.0 earthquakes in California and Nevada preferentially occurred at the ends of 19th and 20th century Mw ≥ 6.5 fault ruptures, and the focal mechanisms were the same as the earlier main shock.... more
Poster 031	EFP	CSEP2 from China Perspective Yongxian Zhang, Zhongliang Wu, Xiaodong Zhang, Huaizhong Yu, Shengfeng Zhang, Xiaotao Zhang, Chen Yu, Chaozhong Hu Recently, a China-US cooperation project named “CSEP China in the Context of China Seismic Experimental Site (CSES)” was approved by the Ministry of Science and Technology, China which is led by Yongxian Zhang at CENC and Emily Brodsky at UCSC and... more
Poster 046	Seismology	Updating the Caltech Millkan Shaker for time-lapse seismic imaging in Southern California Yuling Zhang, Ethan Williams, Valere Lambert, Zhongwen Zhan Ambient noise interferometry has been invaluable in shallow subsurface imaging. However, in Southern California, rapidly evolving noise sources can lead to spurious velocity changes, posing substantial challenges for time-lapse investigations such... more
Poster 102	Geology	The Holocene paleoearthquakes on the 2014 Kangding Ms6.3 earthquake faults Hu Zhong On November 22, 2014, a Ms6.3 earthquake occurred in Kangding, Sichuan Province. After the field survey of fracture in this region, the Selaha segment of Xianshuihe fault zone is confirmed as the earthquake fault based on comprehensive research of... more
Poster 187	FARM	Evolving seismic and aseismic slip on a heterogeneous frictional fault with heat generation and temperature-dependent creep Bruce Zhou, Iain Bailey, Yehuda Ben-Zion We study the evolution of seismicity and seismic/aseismic slip partitioning on a fault using a generalized version of the Ben-Zion and Rice (1993) model for a discrete cellular fault in elastic halfspace. Previous versions of the model were shown to... more
Poster 026	EFP	MC-QSim -- Introducing a new multi-cycle earthquake rupture simulator Olaf Zielke, Paul Martin Mail With this abstract, we introduce MC-QSim, a newly formulated multi-cycle earthquake rupture simulator for the generation of long sequences of earthquakes along arbitrarily complex fault geometries with heterogeneous distributions of fault... more
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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