Rapid salt-marsh erosion in Grand Bay, Mississippi

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Detailed Description

This time-lapse video shows lateral erosion of a salt marsh in the Grand Bay National Estuarine Research Reserve, part of an embayment near the city of Pascagoula, Mississippi, on the US Gulf coast. Wave action over the course of 6.5 months led to about 1.5 meters of erosion. Researchers from the USGS Woods Hole Coastal and Marine Science Center are studying the influence of wave attack and sediment supply on wetland vulnerability and ecosystem services. Learn more about estuaries research at the USGS by visiting the Estuarine Processes, Hazards, and Ecosystems project web page at https://woodshole.er.usgs.gov/project-pages/estuaries/
 

Details

Start Year: 08/2016

End Year: 01/2017

Image Dimensions: 1280 x 720

Date Taken:

Length: 00:01:26

Location Taken: Grand Bay, MS, US

Transcript

This time-lapse video shows lateral erosion of a salt marsh

in the Grand Bay National Estuarine Research Reserve,

part of an embayment near the city of Pascagoula, Mississippi,

on the US Gulf coast

Tidal wetlands like those in Grand Bay 

are an important geomorphic and ecological feature of the coastal zone. 

During the 6.5 month period represented in this video, 

the salt marsh eroded by about 1.5 meters,

a rate equivalent to more than 3 meters, or 10 feet, per year.

Researchers from the USGS Woods Hole Coastal and Marine Science Center 

are studying the influence of wave attack and sediment supply 

on wetland vulnerability and ecosystem services.

USGS research in tidal wetlands supports coastal resource managers

by providing decision-making tools to help them identify

vulnerable areas and optimal restoration sites.

Learn more about estuaries research at the USGS by visiting 

the Estuarine Processes, Hazards, and Ecosystems project web page.