IMAGING THE MONO BASIN WITH LAKE-BOTTOM AND LAND-BASED MAGNETOTELLURIC MEASUREMENTS

Mono Basin in eastern California is a scientifically interesting location for many reasons including recent volcanic activity and active hydrothermal systems. The magnetotelluric method (MT) estimates subsurface electrical resistivity, which is sensitive to where fluids are or have been in the crust. To develop a comprehensive understanding of the subsurface under Mono Basin land-based data were collected between 2014 and 2016 south of Mono Lake. Those data were modeled in 3D and identified a shallow electrically conductive body that appeared to extend under Mono Lake. To fill in the data gap created by the lake novel lake-bottom instruments were developed by Scripps and deployed for the first time in a terrestrial lake in 2018. To provide spatial coverage land-based stations were collected around Mono Lake. The combined data set of land-based and lake-bottom stations are modeled in 3D imaging electrically conductive structures related to magmatic and hydrothermal systems.