Dr. Kathy Licht's research focuses on understanding the history of the Antarctic ice sheet so her research group can better determine what causes it to advance and retreat and how that fits in with the global climate system.  Licht holds several active grants through the National Science Foundation that have provided opportunities for their research group to collect field data, which provides important new data to help determine Antarctica's history. One project builds on previous work in the Ross Sea (Licht et al., 2014) and includes a provenance analysis of glacial sediments in the Weddell Sea region of Antarctica.  A second grant provided funding to collect radar data that lets us see beneath the ice surface and characterize the internal structure of the ice.  The glacial deposits at this research site are unusual because they contain a relatively continuous sequence of glacial deposits spanning more than one glacial-interglacial cycle, helping to document ice sheet changes on these long-time scales.