Measuring Vital Sediment Flow in a NJ Coastal Marsh (image) US Geological Survey Share Print E-Mail Caption USGS scientist Zafer Defne measures water and sediment movement at Forsythe National Wildlife Refuge, NJ. Defne and colleagues developed a quick method for assessing the potential lifespans of Atlantic and Pacific coast salt marshes. Credit Sandra Brosnahan, USGS Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.