DOI: https://doi.org/10.5069/G9BG2M6R
OT Collection ID: OT.112016.4326.1
OT Collection Name: Global Multi-Resolution Topography (GMRT) Data Synthesis
Short Name: GMRT
Collection Platform: Bathymetric Data

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Download and Access Products: 
	1. Raster
		opentopoID: OTGMRT.112016.4326.1
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTGMRT.112016.4326.1


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Collection Overview: The Global Multi-Resolution Topography (GMRT) synthesis is a multi-resolutional compilation of edited multibeam sonar data collected by scientists and institutions worldwide, that is reviewed, processed and gridded by the MGDS Team and merged into a single continuously updated compilation of global elevation data. The synthesis began in 1992 as the Ridge Multibeam Synthesis (RMBS), was expanded to include multibeam bathymetry data from the Southern Ocean, and now includes bathymetry from throughout the global and coastal oceans. GMRT is included in the ocean basemap in Google Earth (since June 2011) and the GEBCO 2014 compilation.  Data is accessed through the GMRT GridServer Web Service. OpenTopography provides a user interface for using the web service and enables users to utilize OpenTopography processing tools, such as visualization and advanced hydrologic terrain analysis (TauDEM).

Dataset Acknowledgement: Ryan, W.B.F., S.M. Carbotte, J.O. Coplan, S. O'Hara, A. Melkonian, R. Arko, R.A. Weissel, V. Ferrini, A. Goodwillie, F. Nitsche, J. Bonczkowski, and R. Zemsky (2009), Global Multi-Resolution Topography synthesis, Geochem. Geophys. Geosyst., 10, Q03014, https://doi.org/10.1029/2008GC002332

Dataset Citation: Global Multi-Resolution Topography (GMRT) Data Synthesis. Distributed by OpenTopography. https://doi.org/10.5069/G9BG2M6R . Accessed: 2024-04-24

Use License: Not Provided

Dataset Keywords: GMRT, sonar, bathymetry, ocean, global, lidar

Survey Date: 01/01/1992
Publication Date: 12/07/2016

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Data Provider and Roles:
	1. Marine Geoscience Data System
	Role: Partner
	Url: http://www.marine-geo.org/

	2. Interdisciplinary Earth Data Alliance
	Role: Partner
	Url: https://www.iedadata.org/

	3. Lamont-Doherty Earth Observatory
	Role: Partner
	Url: https://ldeo.columbia.edu/


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Total number of points: N/A

Area: N/A

Point Density: N/A

Coordinates System: 
	Horizontal: WGS84 [EPSG: 4326]
	Vertical: WGS84

Survey Report: 


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Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.112016.4326.1&download=true

Dataset Spatial Bounds:
	North: 90.0°
	South: -90.0°
	East: 180.0°
	West: -180.0°