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multibeam image
(download data for free)

Multibeam Bathymetry

Multibeam bathymetric data at NGDC can now be selected via an interactive map (ArcIMS) Web interface. Data selections are downloadable for free. An on-line Autochart custom mapping feature is also available. See the "ArcIMS Map Interface" link at left.

NGDC is the US national archive for multibeam bathymetric data and presently holds over 15.7 million nautical miles of ship tracklines (1187 surveys) received from sources worldwide.

In addition to deepwater data, the multibeam database also includes hydrographic multibeam survey data from the NOS. Associated NOS data products, including 3D images and grids, are available via the NOS Hydrographic Survey Data Map Service.

The interactive map for these data displays the geographic locations of multibeam bathymetric data by institutional source or by instrument. Data NOT at NGDC but in the GEODAS inventory can be viewed by searching the inventory for multibeam bathymetric data not at NGDC.

NGDC accepts new multibeam bathymetric data that will be provided through this map. We prefer data in a format supported by the MB-System software package developed at LDEO used to process and display multibeam bathymetric data.

When submitting data, you will be asked to enter metadata for each survey. The data should be organized by survey, tarred, and compressed for upload. Please search the interactive map first to be sure that the surveys you wish to submit are not already in the MBBDB. There is a 2 gigabyte limit to the size you can send, so please have your compressed data files in 2 gigabyte sizes or smaller.

sample Fliedermaus 3D image of NOS shallow water bathymetry
3D image of NOS survey multibeam. Grids and images of NOS data are available via the NOS Map Service, processed multibeam data are available via the Multibeam Map Service.