SRTM15_PLUS: Data fusion of Shuttle Radar Topography Mission (SRTM) land topography with measured and estimated seafloor topography (NCEI Accession 0150537)

Metadata Updated: February 27, 2019

To provide an improved mapping of the seafloor fabric globally, we have used available sounding data along with an improved global marine gravity model to develop at grid at 15 arcsecond resolution (~500 m). Land elevations are based on the best available data from SRTM, ASTER digital elevation models while the ice topography of Greenland and Antarctica is based on CryoSat-2 and IceSat. Ocean bathymetry is based on bathymetric predictions from the latest global gravity model from CryoSat-2 and Jason-1 along with 494 million carefully edited depth soundings at 15 arcsecond resolution. Bathymetry of the Arctic seafloor is based on the IBCAO grid with improved resolution in areas of multibeam coverage. We have used the bathymetry grid along with the improved gravity to construct a global map of abyssal hill amplitude and orientations and compare the orientations with predictions from seafloor age gradient analysis. Areas of disagreement reveal propagating rifts, microplates, and tectonic reorganizations. This SRTM15_PLUS provides the foundational bathymetry layer for Google Earth and is freely available at our ftp site (topex.ucsd.edu).

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Dates

Metadata Date November 5, 2018
Metadata Created Date May 31, 2016
Metadata Updated Date February 27, 2019
Reference Date(s) May 20, 2016 (publication)
Frequency Of Update asNeeded

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Harvested from NOAA CSW Harvest Source

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Resource Type Model
Metadata Date November 5, 2018
Metadata Created Date May 31, 2016
Metadata Updated Date February 27, 2019
Reference Date(s) May 20, 2016 (publication)
Responsible Party (Point of Contact)
Contact Email
Access Constraints Cite as: Olson, Christopher J.; Becker, Joseph J.; Sandwell, David T. (2016). SRTM15_PLUS: Data fusion of Shuttle Radar Topography Mission (SRTM) land topography with measured and estimated seafloor topography (NCEI Accession 0150537). Version 1.1. NOAA National Centers for Environmental Information. Dataset. [access date], NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long 180
Bbox North Lat 90
Bbox South Lat -90
Bbox West Long -180
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Preview graphic
Graphic Preview File https://data.nodc.noaa.gov/cgi-bin/gfx?id=gov.noaa.nodc:0150537
Graphic Preview Type PNG
Guid gov.noaa.nodc:0150537
Harvest Object Id 0ee5fe13-5fdd-441f-9743-5a266f9d8544
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2010-01-01
Temporal Extent End 2014-12-31

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