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Poster #008, Earthquake Geology

Characteristics of Surface Rupturing Earthquakes in the Walker Lane from Centimeter Scale Orthoimagery

Ian Pierce, Rich D. Koehler, Alana M. Williams, Seth Dee, & Gordon G. Seitz
Poster Image: 

Poster Presentation

2020 SCEC Annual Meeting, Poster #008, SCEC Contribution #10676 VIEW PDF
Centimeter scale drone based structure from motion orthoimagery was collected shortly following the 2019 M6.4 & 7.1 Ridgecrest and 2020 M6.5 Monte Cristo earthquakes. Fractures are mapped at high detail for tens of km along each rupture. Despite similarly ruptured materials and tectonic settings, each rupture displays distinctly different characteristics in not only the overall rupture pattern, but also finer scale fracturing. Ridgecrest ruptures are primarily confined to a few main traces, while MCE are frequently discontinuous fields of numerous distributed cracks. Here examples of these different patterns are presented. We also show our locations for trenching work to commence later this fall.