Executive Summary:
Integration of water- and land-based geospatial data
often stops in the water-land interface zone where shoreline is because
of various definitions of reference frames (depth and elevation),
different shorelines (high/low water, vegetation line, and
tide-coordinated), and ever changing coastal features. The National
Academy of Sciences (NAS) Committee on National Needs for Coastal
Mapping and Charting recommended an ultimate seamless water-land
transition infrastructure as a goal for future coastal geospatial data
acquisition and applications (NAS 2003 and 2004). It calls for an
integrated methodology that will allow integration of geospatial
coastal data without obstacles of datum issues, and will use
hydrodynamic modeling and GIS technology to create shorelines of
various definitions without actual repeated costly survey. The NAS’s
recommendation matches exactly the NGA’s focus in Research Area 1.
This research will investigate the potential of
seamless integration of geospatial data from water to land. The
objectives of this research project are:
a) to develop a strategy and a system for seamless
transformation of vertical and horizontal datums used in navigation,
bathymetry, coastal management, and topographic mapping,
b) to develop a spatio-temporal modeling system that
produces shorelines with different water levels from Coastal Terrain
Models (CTM: bathymetry + topography) and Water Surface Models (WSM),
c) to develop a hydrological modeling system that
produces WSM needed for shoreline generation and datum conversion, and
d) to validate the methodology using long term
observations of shorelines, water gauge stations, buoys, and satellite
altimetry data. The long-term goal is to research and develop a
technology that will seamlessly integrate all geospatial data from
water to land and to air.
If successfully completed, this project will provide an
innovative approach toward seamless integration of geospatial data from
water to land. The advantages of such a fundamental spatio-temporal
modeling system include:
a) geospatial data on both sides of the shoreline can
be integrated in a common vertical and horizontal datum frame
seamlessly,
b) shorelines with different definitions can be
generated through the modeling system in a GIS environment, and
c) the integrated geospatial data can be used to
monitor dynamic changes in the water-land interface zone.
Full Proposal: HM1582-04-BAA-0002
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