Aftershock of June 2020 Andrea Donnellan*1 , Joaquin Garcia-Suarez2,3 , Devin McPhillips4 , Domniki Asimaki2 ,

Donnellan, A., J. Garcia-Suarez, D. McPhillips, C. Goulet, X. Meng, S. Devine, G. Lyzenga, and D. Asimiki (2022), Aftershock of June 2020 Andrea Donnellan*1 , Joaquin Garcia-Suarez2,3 , Devin McPhillips4 , Domniki Asimaki2 ,, Seismol. Res. Lett., XX, 1-9, doi:10.1785/.
Abstract

The 2019 M w 7.1 Ridgecrest California earthquake rupture passed within 4 km of the Trona Pinnacles, a large group of tufa rock pillars. Reconnaissance following the Ridgecrest mainshock documented fresh damage to several of the Pinnacles. Repeated aerial photogrammetric surveys also documented damage during subsequent aftershocks. Here, we describe the photogrammetric data with emphasis on a specific rock spire that toppled during an Mw 5.5 aftershock. We calculate the volumes of the intact spire and of its subsequent debris. To explore the utility of the pinnacles as fragile geologic features for constraining past earthquake shaking intensity, we calculate the

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Research Program
Earth Surface & Interior Program (ESI)
Funding Sources
NASA, NSF, USGS

 

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