Research
Research interests include: (1) understanding the dynamics of fjords; (2) the fundamental biogeochemistry problem on how to predict the sediment delivery by World Rivers since so few are monitored; (3) how river-borne particles clump together once they reach the marine environment; (4) how deltas evolve from both autocyclic responses and allocyclic forces; and (5) how deltas evolve under the impact of humans. I spend much time on global environmental change science, particularly on how humans impact the global environment. Recent studies on delta subsidence and changes in the relative sea levels of deltas have pointed to the negative impact of upstream damming and subsurface mining for water, oil and gas. I am leading community efforts to develop models and model coupling systems related to earth and ocean dynamics.