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Publicado el: 2016-09-28
Tiempo de estudio aproximado: 0 - .25 h
Incluye sonido: yes
Áreas temáticas
Geospatial
Descripción:
Produced in collaboration between NOAA’s National Geodetic Survey (NGS) and The COMET Program, this video explains NOAA’s VDatum tool and its role in facilitating height transformations between vertical datums including tidal, orthometric, and ellipsoidal datums. It also provides an overview of different types of vertical datums and how they may be used for different applications with a focus on coastal areas and navigation services. Leaders from NOAA as well as other government agencies such as the U.S. Geological Survey (USGS), the Federal Emergency Management Agency (FEMA), and the U.S. Army Corps of Engineers (USACE) among others, along with GIS users, coastal managers and research scientists will find this 5 minute video helpful for understanding the importance of using consistent vertical datums when working with height information.
This resource is hosted on COMET's YouTube Channel.
Objetivos:
- Recognize that height information may be referenced to different datums, and that different datums are used for different purposes.
- Describe the VDatum tool and how it facilitates height transformations.
- Recognize the importance of the VDatum tool for supporting coastal applications (especially navigational services).
Palabras clave
VDatum, height transformation, Coastal elevation, geodesy, GIS, vertical datum, datum, datums, NAD 83, NAVD 88, mean lower low water, MLLW, mean higher high water, MHHW, local mean sea level, height data, geospatial, sea level rise, GPS, ellipsoid, ellipsoidal, tidal datum, coastal geodesy, topography, bathymetry, bathymetric, mean high water, MHW, coastal navigation, mean high water shoreline, tidally-referenced boundary, NOAA, NGS, coastal zone, hazard mitigation plan