UAS-based tools for mapping and monitoring hydrothermal systems: An example from Mammoth Lakes, California - Zielinski, Laurie; Glen, Jonathan; Earney, Tait; Rea-Downing, Grant H.; Vaughan, R.; Kelly, Peter; Keller, Gordon; Dean, Branden; Schermerhorn, William (Geothermal Resources Council Transactions, 2022)