Tuesday, July 26, 2011

NGS Hosts Geographer from National Park Service

The week of July 18th, NGS hosted Neil Winn, a geographer from the National Park Service stationed at the Assateague Island National Seashore. Over the past year, Winn has been developing a local geodetic control network throughout the entire Assateague Island to monitor barrier island migration and the positional evolution of critical dune habitats as environmental (and sea level) conditions change. The Park Service has been monitoring beach movement since the 1990s, but until now, did not have a geodetic control network in place to enable high-precision measurements of change. During his visit, Winn met with experts in GPS processing, Horizontal Time-Dependent Processing (HTDP), Real-Time Kinematic (RTK) GPS, Surface Elevation Tables (SETs), Height Modernization, as well as experts from the Center for Operational Oceanographic Products and Services (CO-OPS) regarding tidal datums analysis.