Abstract
 Seagrass Prop Scar Mapping: An Airborne Sensor Comparison Track: Ocean, Coastal, and Marine Resources Author(s): John Wood, Kass Green, Bill Stevenson, Dennis Pridgen In a collaborative effort with NOAA's Coastal Services Center, Texas Parks and Wildlife Department, Alta Vista Consulting, Tukman Geospatial and the Harte Research Institute for Gulf of Mexico Studies, three multi-spectral imaging systems flew concurrent flights over the Redfish Bay State Scientific Area in Texas. Recent regulations prohibit damage to seagrass in this area for a period of five years. This project provides baseline data for gauging the effectiveness of those regulations, and compares the Leica ADS-40, DMC Imager, Vexcel UltraCam, and analog imagery for the ability to delineate propeller scarring in seagrass beds. The sensors image approximately 64 square miles at 1/4 meter resolution, and comparison criteria includes horizontal accuracy, radiometric and spatial resolution, spatial offsets, exposure variations, dynamic range, mosaic quality, IR penetration, and ease of use and processing. Automated scar deliniation is performed using a single set of training sites, ensuring a valid comparison. John Wood TAMUCC Harte Research Institute 6300 Ocean Drive HRI 215B Corpus Christi , TX 78412 US Phone: 361-825-2766 Fax: 361-825-2050 E-mail: john.wood@tamucc.edu Kass Green The Alta Vista Company 1101 High Ct Berkeley , CA 94708 US Phone: (510) 917-0384 E-mail: kassgreen@earthlink.net Bill Stevenson PSGS @ NOAA Coastal Services Center Coastal Services Center 2234 S. Hobson Ave. Charleston , SC 29405 US Phone: 843-740-1299 E-mail: Bill.Stevenson@noaa.gov Dennis Pridgen Texas Parks & Wildlife Dept Coastal Fisheries 702 Navigation Circle Rockport , TX 78382 US Phone: (361) 729-1437 E-mail: dennis.pridgen@tpwd.state.tx.us |
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