Observations From the 2019 Ridgecrest Earthquake Sequence [Poster]
The Mw 7.1 July 5 mainshock of the 2019 Ridgecrest Earthquake Sequence was the largest earthquake in California in the 20 years since the 1999 Mw 7.1 Hector Mine event and the first major earthquake in southern California since the regional seismic monitoring was expanded to pave the way for earthquake early warning. Over the past 20 years, our community has developed many advances in methods and technology used to observe pre-, co- and post-seismic deformation due to earthquakes. Such advances include the use of aerial and terrestrial lidar, image correlation methods, low-altitude aerial photography, interferometric synthetic-aperture radar (InSAR) and dense deployments of geophysical and geodetic sensors in both permanent and campaign arrays. In addition to augmenting the methods in our collective toolbox, we have learned from other continental strike-slip earthquakes in these intervening 20 years, allowing us to target fundamental questions and high-resolution datasets to characterize earthquake processes and fault behavior. These investigations include, as an example, coupling field and remote-sensing approaches to determine fine-scale slip distributions along and across fault strike to quantify strain partitioning and off-fault deformation. We welcome contributions with direct observations of the 2019 Ridgecrest Earthquake Sequence, including the July 4 Mw 6.4 foreshock event, that elucidate processes specific to this sequence that will help us better understand the behavior of earthquake and fault processes, as well as the characteristics of ground motions from large crustal earthquakes, globally.
Conveners
Alexandra E. Hatem, U.S. Geological Survey (ahatem@usgs.gov); Susan Hough, U.S. Geological Survey (hough@usgs.gov); Christopher W. D. Milliner, Jet Propulsion Laboratory, Caltech (christopher.milliner@jpl.nasa.gov); Sinan Akciz, California State University, Fullerton (sakciz@fullerton.edu); Alana Williams, Arizona State University (amwill25@asu.edu); Timothy Dawson, California Geological Survey (timothy.dawson@conservation.ca.gov)
Poster Presentations
| Participant Role | Details | Action |
|---|---|---|
| Submission | Surface Slip Distribution for the 2019 M7.1 Ridgecrest, California Earthquake Rupture | View |
| Submission | Fault Slip Distribution Along the Southern 15 Km of the M7.1 Ridgecrest Earthquake Surface Rupture | View |
| Submission | Jumping Rocks as an Indicator of Ground Motion During the 4 July 2019 M6.4 Ridgecrest Earthquake | View |
| Submission | Survey of Damaged Tufa Pinnacles in Trona Following the 2019 Ridgecrest Earthquake Sequence | View |
| Submission | On the Consistency of Instrumental, Macroseismic Intensity and Remote Sensing Data: Lessons From the 2019 Ridgecrest, California Earthquake Sequence | View |
| Submission | Mild Displacements of Boulders during the 2019 Ridgecrest Earthquakes | View |
| Submission | Near-Source Ground Motion Characteristics of the Ridgecrest Earthquake Sequence | View |
| Submission | Highlights of Tall Buildings in Los Angeles and San Diego Shaken at Epicentral Distances ~200 Km or More by the 5 July 2019 M7.1 Ridgecrest, California Earthquake | View |
| Submission | Variations in Ground Motion Amplification in the Los Angeles Basin During the 2019 M7.1 Ridgecrest Earthquake: Implications for Mid-Rise and High-Rise Structure Response | View |
| Submission | Aftershock Forecasts Following the M6.4 and M7.1 Ridgecrest, California Earthquakes of July 2019 | View |
| Submission | Pseudo-Prospective Testing of UCERF3-ETAS Aftershock Forecasts During the 2019 Ridgecrest, California Earthquake Sequence | View |
| Submission | Stress Changes on the Garlock Fault During and After the 2019 Ridgecrest Earthquake Sequence | View |
| Submission | Revised GNSS-Only Dislocation Models and Residual Analysis for Ridgecrest Sequence, San Simeon, Parkfield and La Habra Events | View |
| Submission | Source Time Functions for a M4.5 Aftershock Within the 2019 Ridgecrest, California Earthquake Sequence | View |
Observations From the 2019 Ridgecrest Earthquake Sequence [Poster]
Description