Rob Larter is a marine geophysicist at British Antarctic Survey. Since 2004, his main research focus has been on late Quaternary ice sheet history, glacial geomorphology and glacial/glacial-marine processes. He also remains active in research on the tectonic and palaeoenvironmental history of Antarctica and the Southern Ocean through the Cenozoic era. Larter's specialties include the acquisition, processing and interpretation of seismic reflection, marine magnetic, swath bathymetry, and sidescan sonar data.

Larter began his ITGC work as a lead principal investigator on the THOR project. He and his team will investigate sediments deposited in the seas near the Thwaites Glacier, and reconstruct past changes in environmental conditions and the glacier's response, adding context to projections of future change.

As of spring 2022, Larter is a co-principal investigator on THOR and has assumed the UK lead PI role for the Science Coordination Office, joining Ted Scambos of the US.