Influence of Local and Remote Hurricanes on Circulation over Louisiana Shelf and Exchange Flows in Tidal Passes: Simulations and Observations
Abstract
Hurricane storm surges are usually studied in the areas where hurricane makes landfall. The influence of hurricane on the continental shelf in remote areas is relatively less studied. We have had the opportunities of field observations both near and far away from landfalls. We studied how the influences on the shelf circulation and exchange flows through tidal passes differ between situations under a remote hurricane (e.g. >300km away) and that under a local hurricane. With a combination of funding from NSF and BOEM, we have deployed acoustic Doppler current meters (ADCPs) in tidal channels and over the Louisiana continental shelf, during which hurricanes and tropical storms have passed. With these data and a series of numerical experiments using a Finite Volume Community Ocean Model (FVCOM), driven by an atmospheric model output from WRF, we have contrasted the remote and local impacts of hurricanes or tropical storms. Our results are useful in understanding the direct impact of hurricanes and remote effect that can be important for the water and sediment transports.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFMOS53A..06L
- Keywords:
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- 4546 Nearshore processes;
- OCEANOGRAPHY: PHYSICALDE: 4558 Sediment transport;
- OCEANOGRAPHY: PHYSICALDE: 4562 Topographic/bathymetric interactions;
- OCEANOGRAPHY: PHYSICALDE: 4564 Tsunamis and storm surges;
- OCEANOGRAPHY: PHYSICAL