EEGLE: Episodic Events Great Lakes Experiment. Nearshore-Offshore Transport in the Great Lakes: Nearshore Physical Oceanography Measurements Lake Michigan Lake Michigan. Data Report (May 1997-June 1998)

摘要

In the Great Lakes, as well as in the coastal oceans the gradients of many biogeochemically important materials (BIMs) are considerably higher in the offshore direction than in the longshore directio. In the presence of these large gradients, cross-isobath circulation is a primary mechanism for the exchange of material between nearshore and offshore waters. In the coastal regions of the Great Lakes it has been observed that the mean along shore transport is much larger than the cross-shore transport. However, both the alongshore and cross-shore current components exhibit strong episodic behaviour due to wind forcing. In order to understand the cross-shore transport of BIMs and quantify the physical processes that are responsible for the nearshore-offshore mass exchange, a multidisciplinary research program, EEGLE (Episodic Events Great Lakes Experiment) was recently initiated by NOAA (National Oceanic and Atmospheric Administration) and NSF (National Science Foundation) in Lake Michigan.