Bulk Crustal Properties of the Sierra Nevada

The Sierra Nevada Earthscope Project (SNEP) seeks to advance our understanding of the ongoing foundering of mantle lithosphere beneath the Sierra Nevada. SNEP is a temporary broadband deployment within the broader USArray Transportable Array (TA) network. The SNEP deployment consists of two phases and a network totaling ~75 broadband stations. The network extends from the western foothills to eastern Nevada between roughly 37N to 40.5N with an average station spacing of 25km. We present the bulk crustal property estimates (thickness and Vp/Vs ratio) for SNEP stations and surrounding USArray TA stations by applying the automated receiver function technique implemented by EARS (The EarthScope Automated Receiver Survey). This approach will allow us to test the application of this methodology to portable PASSCAL and USArray/FlexArray experiments and integration of those results with EARS results for the Transportable Array. The resulting determination of the lateral variations in the bulk properties of the Sierra Nevada crust will provide baseline observations in the search for the existence and extent of foundered crust/upper mantle within the SNEP footprint and serve as a starting point for more advanced analysis of receiver functions within the SNEP footprint.