Temporal changes in the radiogenic signature of shallow groundwater and its potential implications in the SGD estimates in a semiarid area

Loren Walker1, Dorina Murgulet2, Cody V Lopez3 and Audrey R Douglas2, (1)Texas A&M University Corpus Christi, Corpus Christi, TX, United States, (2)Texas A & M University Corpus Christi, Corpus Christi, TX, United States, (3)Texas A&M University-Corpus Christi, Corpus Christi, United States