Washington (UPI) Aug 13, 2010
New accurate maps of Chesapeake Bay wetlands will help in studies of areas critical to the health of bodies of water like the Bay, U.S. researchers say.
Two U.S. Department of Agriculture scientists used satellite data to created new maps 30 percent more accurate than existing ones, a USDA release said Friday.
Because many wetlands are forested, it can be hard to see the wetlands on aerial photography. Trees block the view and maps drawn from aerial photographs are subjective, causing more loss of accuracy, the release said.
With the satellite data, Agricultural Research Service soil scientist Greg McCarty and USDA Forest Service ecologist Megan Lang were able to create accurate maps showing flow paths into the Bay -- and determine whether water flows without filtration directly into the Bay, or whether it flows first through forested wetlands that might filter out possible pollutants.
Because forested wetlands had been thought to be isolated from each other and the Bay, researchers say, the Clean Water Act did not offer them the same regulatory protections as other wetlands.
Accurate maps such as the new satellite versions are vital to Chesapeake Bay cleanup efforts and state and national wetland conservation debates, the USDA said.
Share This Article With Planet Earth
Earth Observation News - Suppiliers, Technology and Application
Send In The Clouds
Pasadena CA (JPL) Aug 13, 2010
Gaze up at a cloud-filled sky, and you may spot the white, fluffy shape of a dragon, fish or elephant. Looking at the same sky, Graeme Stephens sees a different vision - a possible future for Earth's climate. Stephens, a professor at Colorado State University in Ft. Collins, is principal investigator of NASA's CloudSat mission, launched in 2006 to improve our understanding of the role clou ... read more
Safer Plastics That Lock In Potentially Harmful Plasticizers|
Colorado Space Grant Consortium And LockMart To Develop CubeSat
Better Displays Ahead
Chinese 'peel' widget converts Apple Touch to phone: report
Persistent Wireless Broadband Communications Network For The Battlefield
Mexican navy aircraft to use Telephonics
Raytheon's ASTOR Saving Lives In The Counterinsurgency Battle
Testing Of Australia's Network Centric Command And Control System Completed
Arianespace Announces Launch Contracts For Intelsat-20 And GSAT 10 Satellites
Arianespace Launches Two Satellites
New Rocket Launch Period In And Around Tanegashima
Kourou Spaceport Welcomes New Liquid Oxygen And Liquid Nitrogen Production Facility
India Launches Satellite-Based Navigation System
Putin wants Russian satnav system in new cars from 2012
Lockheed Martin-Built GPS Satellite Surpasses 10 Years On-Orbit
Sea Star Line GUARDIAN SERVICE Offers Reefer Monitoring, Tracking, Tracing And Control
Russian analysts assail aerial projects
US Senate legend Stevens killed in Alaska plane crash
Turkey's aerial industries prosper
Hong Kong's Cathay expands as demand returns
Computer data stored with 'spintronics'
Protein From Poplar Trees Can Be Used To Greatly Increase Computer Capacity
Polymer Synthesis Could Aid Future Electronics
Acer, Asus and Lenovo lead pack as PC sales surge
Satellite data yield better wetlands maps
NASA Video Shows Global Reach Of Pollution From Fires
Send In The Clouds
Google lets uneasy Germans opt out of 'Street View'
Texas Petrochemical Emissions Down, But Still Underestimated
Study: Better pollution measuring a must
China cracks down on polluting factories
Oil tanker suspected in penguin-killing slick near Rio
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement|