25 Jun '15, 2pm

Airborne Instruments Look for Changes in the Delta #NASA

Researchers recently completed an intensive study of levees and wetlands along the Louisiana coast, making measurements with three advanced imaging instruments mounted on NASA research aircraft. NASA makes several aerial survey flights over the Gulf Coast each year in order to keep consistent records of ground subsidence—the gradual sinking of a patch of land—which can compromise the integrity of roads, buildings, and levee systems. Scientists also closely monitor vegetation changes in the coastal wetlands to better understand how to preserve them. The marshes are both delicate and fertile ecosystems, as well as natural barriers between land and sea. During storms and hurricanes, wetlands slow the surge of seawater before it reaches more heavily developed inland areas. However, as wetlands become saturated due to rising sea levels, the vegetation within them dies and the p...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=86104&s...

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#NASA image of the day highlights Louisiana #delta

earthobservatory.nasa.gov 25 Jun '15, 12pm

Researchers recently completed an intensive study of levees and wetlands along the Louisiana coast, making measurements wi...

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