Airborne lidar and electro-optical imagery along surface ruptures of the 2019 Ridgecrest earthquake sequence, Southern California
Seismological Research Letters
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Abstract
Surface rupture from the 2019 Ridgecrest earthquake sequence, initially associated with the M 6.4 foreshock, occurred on July 4 on a ~17 km long, northeast-southwest oriented, left-lateral zone of faulting. Following the M 7.1 mainshock on July 5 (local time), extensive northwest-southeast-oriented, right-lateral faulting was then also mapped along a ~50 km long zone of faults, including sub-parallel splays in several areas. The largest slip was observed in the epicentral area, and crossing the dry lakebed of China Lake to the southeast. Surface fault rupture mapping by a large team, reported elsewhere, was used to guide the airborne data acquisition reported here. Rapid rupture mapping allowed for accurate and efficient flight line planning for the high-resolution lidar and aerial photography. Flight line planning trade-offs were considered to allocate the medium (25 pulses per square meter, or ppsm) and high resolution (80 ppsm) lidar data collection polygons. The National Center for Airborne Laser Mapping (NCALM) acquired the airborne imagery with a Titan multispectral lidar system and DiMAC aerial digital camera, and USGS acquired GPS ground control data. This effort required extensive coordination with the Navy as much of the airborne data acquisition occurred within their restricted airspace at the China Lake Ranges.
Suggested Citation
Hudnut, K.W., Brooks, B.A., Scharer, K.M., Hernandez, J.L., Dawson, T.E., Oskin, M.E., Arrowsmith, J.R., Goulet, C.A., Blake, K., Boggie, M.A., Bork, S., Craig L. Glennie, Fernandez-Diaz, J., Singhania, A., Hauser, D., and Sorhus, S., 2020, Airborne lidar and electro-optical imagery along surface ruptures of the 2019 Ridgecrest earthquake sequence, Southern California: Seismological Research Letters, v. 91, no. 4, p. 2096-2107, https://doi.org/10.1785/0220190338.
ISSN: 1938-2057 (online)
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Airborne lidar and electro-optical imagery along surface ruptures of the 2019 Ridgecrest earthquake sequence, Southern California |
| Series title | Seismological Research Letters |
| DOI | 10.1785/0220190338 |
| Volume | 91 |
| Issue | 4 |
| Publication Date | April 22, 2020 |
| Year Published | 2020 |
| Language | English |
| Publisher | Seismological Society of America |
| Contributing office(s) | Earthquake Science Center |
| Description | 11 p. |
| First page | 2096 |
| Last page | 2107 |
| Country | United States |
| State | Calilfornia |
| Other Geospatial | Ridgecrest Earthquake Sequence |