Continuous Bathymetry and Elevation Models of the Massachusetts Coastal Zone and Continental Shelf (ver. 3.0, December 2019)

• Buzzards Bay: continuous bathymetry and topography terrain model of the Massachusetts coastal zone and continental shelf, (32-bit GeoTIFF, UTM 19 NAD 83, NAVD 88 vertical datum).
• Buzzards Bay: Polygon boundaries for source data of a continuous bathymetry and topography terrain model of the Massachusetts coastal zone and continental shelf: (Esri polygon shapefile, Geographic, NAD 83).
• Cape Cod Bay: continuous bathymetry and topography terrain model of the Massachusetts coastal zone and continental shelf, (32-bit GeoTIFF, UTM 19 NAD 83, NAVD 88 vertical datum).
• Cape Cod Bay: Polygon boundaries for source data of a continuous bathymetry and topography terrain model of the Massachusetts coastal zone and continental shelf: (Esri polygon shapefile, Geographic, NAD 83).
• Massachusetts Bay and adjacent land: continuous bathymetry and topography terrain model of the Massachusetts coastal zone and continental shelf, (32-bit GeoTIFF, UTM 19 NAD 83, NAVD 88 vertical datum).
• Massachusetts Bay and adjacent land: Polygon boundaries for source data of a continuous bathymetry and topography terrain model of the Massachusetts coastal zone and continental shelf: (Esri polygon shapefile, Geographic, NAD 83)
• Vineyard and Nantucket Sounds, southern coast of Cape Cod including Martha's Vineyard and Nantucket: continuous bathymetry and topography terrain model of the Massachusetts coastal zone and continental shelf, (32-bit GeoTIFF, UTM 19 NAD 83, NAVD 88 vertical datum)
• Vineyard and Nantucket Sounds, Southern coast of Cape Cod including Martha's Vineyard and Nantucket: Polygon boundaries for source data of a continuous bathymetry and topography terrain model of the Massachusetts coastal zone and continental shelf: (Esri polygon shapefile, Geographic, NAD 83).

Categories

• Data
• Data Release - Revised

Theme

• bathymetry
• digital elevation models
• sea-floor characteristics

Place

• Boston Harbor
• Buzzards Bay
• Cape Cod Bay
• Commonwealth of Massachusetts
• Elizabeth Islands
• Gulf of Maine
• Massachusetts Bay
• Nantucket Sound
• Plymouth Bay
• Stellwagen Bank
• Vineyard Sound

Changes in version 2.0: The MassBay_10m.tif file that was originally uploaded to ScienceBase on February 5, 2018, was an incorrect version. The “MassBayTer” terrain described in Processing Step 8 had been updated prior to publication, but it was not re-exported to create the final version of the MassBay_10m.tif file. This was fixed by rerunning Processing Step 8 to createMassBay_10m_V2.tif, a new GeoTIFF file. The only changes reflected in MassBay_10m_V2.tif are described below. 1) There was a small 10-meter (one cell) gap between National Oceanic and Atmospheric Administration surveys W00044 and W00039 in Stellwagen Bank that produced a gap in the final grid. This was corrected by editing the "MassBayTerBnd" feature class to remove the boundary and the gap. 2) A vertical offset between the U.S. Geological Survey Stellwagen Bank National Marine Sanctuary data and surrounding surveys of 2-3 meters was fixed by reprocessing the data through VDatum (ver. 3.6) with the correct transformation parameters and replacing the source multipoint file (USGS_SBNMS_10m_MP_navd88) in the terrain model. Changes in version 3.0 (December 27, 2019): 1) Ntkt_VS_10m.tif The Ntkt_VS_10m.tif file that was originally uploaded to ScienceBase on February 5, 2018, did not include the source multipoint file “USGSMusk_5m_navd88” as described in Processing Step 3. This was fixed by adding the multipoint file “USGSMusk_5m_navd88” to the Ntkt_VSTer terrain model, building the terrain model, then re-exporting to raster as described in processing step 7. 2) CapeCodBay_10m.tif The CapeCodBay_10m.tif file that was originally uploaded to ScienceBase on February 5, 2018, was the incorrect version. The “CCBayTer” described in Processing Step 8 had been updated prior to publication, and the incorrect version of the “CapeCodBay_10m.tif” was uploaded to ScienceBase.