Erratum to Constraints on Ground Accelerations Inferred from Unfractured Hoodoos near the Garlock Fault, California

2020 ◽  
Vol 110 (3) ◽  
pp. 1393-1393
Author(s):  
Abdolrasool Anooshehpoor ◽  
James N. Brune ◽  
Jaak Daemen ◽  
Matthew D. Purvance
Keyword(s):  
Garlock Fault

scholarly journals PALEOSEISMOLOGY OF THE CENTRAL GARLOCK FAULT IN SEARLES VALLEY, CALIFORNIA

2018 ◽  
Author(s):  
Kyle A. Peña ◽  
◽  
Sally McGill ◽  
Edward J. Rhodes ◽  
James F. Dolan ◽  
...  
Keyword(s):  
Garlock Fault

Investigation and Repair of Tectonic and Storm-Related Road Damage near the Garlock Fault, California

1984 ◽  
Vol xxi (4) ◽  
pp. 495-507
Author(s):  
J. T. ZELLMER ◽  
G. R. ROQUEMORE ◽  
B. J. PANNUTO
Keyword(s):  
Garlock Fault

Rupture Process of the 2019 Ridgecrest, California Mw 6.4 Foreshock and Mw 7.1 Earthquake Constrained by Seismic and Geodetic Data

2020 ◽  
Vol 110 (4) ◽  
pp. 1603-1626 ◽  
Author(s):  
Kang Wang ◽  
Douglas S. Dreger ◽  
Elisa Tinti ◽  
Roland Bürgmann ◽  
Taka’aki Taira
Keyword(s):  
Seismic Data ◽  
Seismic Event ◽  
Rupture Process ◽  
Earthquake Sequence ◽  
Depth Range ◽  
Coseismic Slip ◽  
Eastern California Shear Zone ◽  
Garlock Fault ◽  
The One ◽  
Good Coverage

ABSTRACT The 2019 Ridgecrest earthquake sequence culminated in the largest seismic event in California since the 1999 Mw 7.1 Hector Mine earthquake. Here, we combine geodetic and seismic data to study the rupture process of both the 4 July Mw 6.4 foreshock and the 6 July Mw 7.1 mainshock. The results show that the Mw 6.4 foreshock rupture started on a northwest-striking right-lateral fault, and then continued on a southwest-striking fault with mainly left-lateral slip. Although most moment release during the Mw 6.4 foreshock was along the southwest-striking fault, slip on the northwest-striking fault seems to have played a more important role in triggering the Mw 7.1 mainshock that happened ∼34  hr later. Rupture of the Mw 7.1 mainshock was characterized by dominantly right-lateral slip on a series of overall northwest-striking fault strands, including the one that had already been activated during the nucleation of the Mw 6.4 foreshock. The maximum slip of the 2019 Ridgecrest earthquake was ∼5  m, located at a depth range of 3–8 km near the Mw 7.1 epicenter, corresponding to a shallow slip deficit of ∼20%–30%. Both the foreshock and mainshock had a relatively low-rupture velocity of ∼2  km/s, which is possibly related to the geometric complexity and immaturity of the eastern California shear zone faults. The 2019 Ridgecrest earthquake produced significant stress perturbations on nearby fault networks, especially along the Garlock fault segment immediately southwest of the 2019 Ridgecrest rupture, in which the coulomb stress increase was up to ∼0.5  MPa. Despite the good coverage of both geodetic and seismic observations, published coseismic slip models of the 2019 Ridgecrest earthquake sequence show large variations, which highlight the uncertainty of routinely performed earthquake rupture inversions and their interpretation for underlying rupture processes.

scholarly journals Cascading and pulse-like ruptures during the 2019 Ridgecrest earthquakes in the Eastern California Shear Zone

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Kejie Chen ◽  
Jean-Philippe Avouac ◽  
Saif Aati ◽  
Chris Milliner ◽  
Fu Zheng ◽  
...  
Keyword(s):  
Shear Zone ◽  
Historical Earthquakes ◽  
Volcanic Area ◽  
Strain Rates ◽  
Eastern California Shear Zone ◽  
Garlock Fault ◽  
Slow Velocity ◽  
Event Triggered

AbstractOn July 4 2019, a Mw 6.5 earthquake, followed 34 h later by a Mw 7.1 event, struck Searles Valley, California. These events are part of a long-lived cluster of historical earthquakes along the Eastern California Shear Zone (ECSZ) which started in 1872 and are associated with temporarily elevated strain rates. We find that the Mw 6.5 event initiated on a right-lateral NW striking fault and then ruptured a left-lateral fault to the surface. This event triggered right-lateral slip during the Mw 7.1 earthquake. It started as a bilateral, crack-like rupture on a segment brought closer to failure by the Mw 6.5 event. The rupture evolved to pulse-like as it propagated at a relatively slow velocity (2 km/s) along a segment that was unloaded by the Mw 6.5 event. It stopped abruptly at the Coso volcanic area and at the Garlock Fault and brought some neighbouring faults closer to failure.

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