I am working with Ari Matmon (USGS) and Paul Bierman (UVM) to determine the rates of sediment production and transport in large, ephemeral drainage networks in Namibia. The two rivers, the Swakop and Omaruru, head in the semi-arid central portion of Namibia, continue across the hyper-arid Namib Desert and empty into the Atlantic Ocean. The rivers cross a gap in the Great Escarpment.
So far, we have collected samples down the drainage networks of both large rivers, on smaller rivers that are embaying the Great Escarpment, and on rivers that just drain the Escarpment.
We are in the process of preparing the samples for accelerator mass spectrometry analysis.
In the meantime, you can check out Bierman's previous Namibian study published in the American Journal of Science.