November 16, 2017 @ 4:00 pm - 5:00 pm CST
EEPS Seminar: Ken Ferrier, Georgia Tech
Abstract Title: Himalayan waste management: Sea-level responses to sediment erosion and deposition
Changes in sea level are of wide interest because they provide information about Earth’s internal structure and the sensitivity of ice sheets to climate change. Inferences about the causes of past sea-level change, however, are complicated by difficulties in untangling different drivers of sea-level change from one another. Here I review recent insights on sea-level responses to sediment redistribution under the erosion of mountain belts and growth of sedimentary deposits. Our analyses show that sediment redistribution can locally generate significant sea-level perturbations over glacial-interglacial timescales, and that neglecting these processes can lead to substantial errors in inferences of global ice volume at past interglacials. I conclude by discussing recent advances and challenges in modeling the surface processes that lead to sediment redistribution, and highlight prospects for overcoming these challenges.