{"id":22741,"date":"2015-07-29T14:28:30","date_gmt":"2015-07-29T18:28:30","guid":{"rendered":"http:\/\/www.fondriest.com\/news\/?p=22741"},"modified":"2022-09-03T10:25:49","modified_gmt":"2022-09-03T14:25:49","slug":"nasa-surveying-effort-tracks-gulf-coasts-changing-wetlands","status":"publish","type":"post","link":"https:\/\/www.fondriest.com\/news\/nasa-surveying-effort-tracks-gulf-coasts-changing-wetlands.htm","title":{"rendered":"NASA Surveying Effort Tracks Gulf Coast\u2019s Changing Wetlands"},"content":{"rendered":"

Using sophisticated satellite technology and ground-based field work, NASA scientists have finished a routine surveying effort of wetlands along the Gulf Coast. Surveys of the region are completed several times a year, as scientists with the agency assess how it\u2019s changing over time.<\/p>\n

Of interest to scientists are a number of things. One is the Wax Lake Delta in Louisiana, one of the few deltas worldwide that is actually growing through natural sedimentation.<\/p>\n

\u201cThe Wax Lake Delta study aims to improve modeling of delta formation, which is important for determining how to prevent erosion and restore deltas,\u201d said Cathleen Jones, radar scientist at NASA\u2019s Jet Propulsion Laboratory in Pasadena, California.<\/p>\n

Most deltas are highly engineered, inhabited areas that are in danger from a combination of subsidence and sea level rise, says Jones. That happens because dams upstream and levees in the deltas prevent the natural process of sedimentation from offsetting subsidence. And so it is interesting to watch Wax Lake delta\u2019s growth in contrast with others that aren\u2019t expanding.<\/p>\n

Scientists want to dissect the delta\u2019s changes, as well as those involved with subsidence in the Mississippi River delta and the Gulf Coast ecosystem overall. The progression of the Bayou Corne sinkhole, an expanding sinkhole in Louisiana that threatens surrounding property, is also of interest to scientists.<\/p>\n

\"NASA's

NASA’s C-20A research plane sits at Louis Armstrong New Orleans International Airport<\/a> before its first science flight. (Credit: NASA)<\/p><\/div>\n

The effort relied on a large number of instruments to collect measurements, most of which were mounted to NASA research planes that made flights over the region. They included the Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) instrument; the Next-Generation Airborne Visible\/Infrared Imaging Spectrometer (AVIRIS-ng); and the Air Surface Water and Ocean Topography (AirSWOT) instrument.<\/p>\n

Jones says the UAVSAR instrument helped researchers look at subsidence and levees. The AVIRIS-ng, a hyperspectral imager, collected measurements on marshland vegetation.<\/p>\n

\u201cWe used…coastal bathymetry at Wax Lake Delta and the Bayou Corne sinkhole,\u201d said Jones. AirSWOT, a Ka-band radar, was used \u201cto measure water surface elevations and currents at Wax Lake Delta and in the adjacent coastal marshlands.\u201d<\/p>\n

The goal of the research is to provide data to federal and local agencies, which use the information to determine where to concentrate resources and combat the negative effects of wetland loss and floods. The data will also be used to improve modeling of delta land building and can be applied to help restore deltas worldwide.<\/p>\n

So far, scientists have yet to draw complete conclusions from the measurements they\u2019ve taken. \u201cWe are still analyzing the data, so we don\u2019t have full results yet,\u201d said Jones.<\/p>\n

Top image:\u00a0NASA scientists gather bathymetry, water flow, biomass and current data in the Wax Lake Delta. (Credit: Marc Simard)<\/span><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Using satellite technology and ground-based field work, NASA scientists finish a routine surveying effort of wetlands along the Gulf Coast.<\/p>\n","protected":false},"author":13,"featured_media":22733,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59,5],"tags":[60,123,146,109,56],"class_list":["post-22741","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-estuaries-wetlands","category-featured-articles","tag-featured","tag-mobile-research","tag-nasa","tag-news-ticker","tag-wetlands-estuaries"],"remote_post_permalink":false,"remote_post_featured_image":false,"yoast_head":"\nNASA Surveying Effort Tracks Gulf Coast\u2019s Changing Wetlands<\/title>\n<meta name=\"description\" content=\"Using satellite technology and ground-based field work, NASA scientists finish a routine surveying effort of wetlands along the Gulf Coast.\" \/>\n<meta name=\"robots\" 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