Crustal Strain Patterns Associated With Normal, Drought, and Heavy Precipitation Years in California.

ABSTRACT: We invert continuously operating Global Positioning System (cGPS) data obtained between 2007 and 2019 to quantify non steady-state horizontal strain anomalies in California. Our long-wavelength transient strain model shows seasonal and multiannual variations in horizontal strain anomalies within the plate boundary zone. During the summer, in general, a zone of extensional dilatation develops along the San Andreas Fault zone and Sierra Nevada, whereas contractional dilatation develops along the Eastern California Shear Zone (ECSZ) north of 36.5°N. The patterns of dilatational strain are opposite during the winter. We find that these seasonal strain anomaly patterns vary in magnitude, depending on precipitation intensity in California. Investigating hydrologic loading models and their horizo

SUBMITTER: Kim J 

PROVIDER: S-EPMC9285733 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature