EERI earthquake reconnaissance report: 2019 Ridgecrest earthquake sequence
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Abstract
The Ridgecrest Earthquake Sequence began the morning of 4 July 2019 with an M6.4 earthquake at 10:33 a.m., closely following several small foreshocks. The epicenter of this event was roughly 11 miles (18 km) east-northeast of Ridgecrest (Figure 1) within the Naval Air Weapons Station China Lake (NAWS-CL). Seismic and geologic data established that the M6.4 earthquake occurred primarily along a steeply dipping northeast-trending strike-slip fault with left-lateral slip. This earthquake and preliminary reports of damage in Ridgecrest and Trona and associated ground cracking triggered a response by earthquake scientists and engineers throughout the region. A California Earthquake Clearinghouse was established in Ridgecrest to help coordinate the scientific response effort and to share data.
Suggested Citation
Program, E.L., Scharer, K., 2020, EERI earthquake reconnaissance report: 2019 Ridgecrest earthquake sequence, 71 p.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | Organization Series |
| Title | EERI earthquake reconnaissance report: 2019 Ridgecrest earthquake sequence |
| Year Published | 2020 |
| Language | English |
| Publisher | Earthquake Engineering Research Institute |
| Contributing office(s) | Earthquake Science Center |
| Description | 71 p. |
| Country | United States |
| State | California |