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The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast. The shoreline position and change rate are used to inform management decisions regarding the erosion of coastal resources. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates at 40-meter intervals along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal Services Center. This 2018 update includes two new mean high water (MHW) shorelines for the Massachusetts...
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The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast. The shoreline position and change rate are used to inform management decisions regarding the erosion of coastal resources. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates at 40-meter intervals along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal Services Center. This 2018 update includes two new mean high water (MHW) shorelines for the Massachusetts...
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This dataset consists of short-term (~32 years) shoreline change rates for the north coast of Alaska between the U.S. Canadian Border and the Hulahula River. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 4.3, an ArcGIS extension developed by the U.S. Geological Survey. Short-term rates of shoreline change were calculated using a linear regression rate-of-change method based on available shoreline data between 1978 and 2010. A reference baseline was used as the originating point for the orthogonal transects cast by the DSAS software. The transects intersect each shoreline establishing measurement points, which are then used to calculate short-term rates.
Categories: Data;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: ANWR,
Arctic,
Arctic National Wildlife Refuge,
Barter Island,
Beaufort Sea, All tags...
CMGP,
Coastal and Marine Geology Program,
DSAS,
Demarcation Bay,
Digital Shoreline Analysis System,
Habitat,
Hulahula River,
Jago River,
Kaktovik,
National Assessment of Coastal Change Hazards,
National Assessment of Shoreline Change Project,
North Slope,
Okpilak River,
PCMSC,
Pacific Coastal and Marine Science Center,
Shoreline,
Shoreline Change,
State of Alaska,
U.S. Geological Survey,
USGS,
United States of America,
coastal processes,
environment,
geoscientificInformation,
oceans,
shoreline accretion,
shoreline erosion, Fewer tags
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This dataset consists of short-term (~31 years) shoreline change rates for the north coast of Alaska between the Point Barrow and Icy Cape. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 4.3, an ArcGIS extension developed by the U.S. Geological Survey. Short-term rates of shoreline change were calculated using a linear regression rate-of-change method based on available shoreline data between 1979 and 2010. A reference baseline was used as the originating point for the orthogonal transects cast by the DSAS software. The transects intersect each shoreline establishing measurement points, which are then used to calculate short-term rates.
Categories: Data;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Arctic,
Barrow,
CMGP,
Chukchi Sea,
Coastal and Marine Geology Program, All tags...
DSAS,
Digital Shoreline Analysis System,
Habitat,
NPR-A,
National Assessment of Coastal Change Hazards,
National Assessment of Shoreline Change Project,
National Petroleum Reserve-Alaska,
North Slope,
PCMSC,
Pacific Coastal and Marine Science Center,
Shoreline,
Shoreline Change,
State of Alaska,
U.S. Geological Survey,
USGS,
United States of America,
Utqiagvik,
Wainwright,
coastal processes,
environment,
geoscientificInformation,
oceans,
shoreline accretion,
shoreline erosion, Fewer tags
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Digital elevation models (DEMs) of the lower Elwha River, Washington, were created by synthesizing lidar and PlaneCam Structure-from-Motion (SfM) data. Lidar and still digital photographs were collected by airplane during surveys from 2012 to 2016. The digital photographs were used to create a SfM digital surface model. Each DEM represents the ending conditions for that water year (for example, the 2013 DEM represents conditions at approximately September 30, 2013). The final DEMs, presented here, were created from the most recent lidar before September 30 of a given year, supplemented with an error-corrected SfM model from a low-flow summer Elwha PlaneCam flight as close to 30 September as possible. This synthetic...
Tags: CMGP,
Coastal and Marine Geology Program,
Elwha Dam (historical),
Elwha River,
Glines Canyon Dam (historical), All tags...
NPS,
National Park Service,
PCMSC,
Pacific Coastal and Marine Science Center,
State of Washington,
Substrate,
U.S. Bureau of Reclamation,
U.S. Geological Survey,
USBR,
USGS,
digital elevation models,
field inventory and monitoring,
image collections,
image mosaics,
inlandWaters,
lidar,
river bank,
river channel,
river reaches,
river systems,
sediment deposition,
time series datasets,
topographic maps, Fewer tags
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