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Mosaic of 5 m gridded multibeam bathymetry and bathymetry derived from multispectral IKONOS satellite imagery of Maug Island, Commonwealth of the Northern Marianas Islands, USA

Summary

Type of release
ongoing release of a series of related datasets

Data Licence
Not Applicable

Content Licence
Creative Commons CCZero

Verification
automatically awarded

Release Date
26 September 2015
Modified Date
26 September 2015
Update Frequency
asNeeded
Publishers
National Oceanic and Atmospheric Administration, Department of Commerce
Identifier
mosaic-of-5-m-gridded-multibeam-bathymetry-and-bathymetry-derived-from-multispectral-ikonos-sat
Landing Page
http://catalog.data.gov/dataset/mosaic-of-5-m-gridded-multibeam-bathymetry-and-bathymetry-derived-from-multispectral-ikonos-sat
Temporal Coverage
12 September 2003 — 8 June 2007

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Description

Gridded multibeam bathymetry is integrated with bathymetry derived from multpectral IKONOS satellite data. Gridded (5m and 10 m cell size) multibeam bathymetry collected aboard NOAA Ship Hiialaka'i and R/V AHI. Bathymetry values shallower than 25 m were derived by gauging the relative attenuation of blue and green spectral radiance as a function of depth. A multiple linear regression analysis of linearized blue and green band spectral values against depth determined the variables of y-intercept, blue slope and green slope values. Variables then used in multivariate slope intercept formula to derive depth. Variables were adjusted to improve the statistical accuracy and spatial coverage of the final derived bathymetry product. Digital image processing to derive depths conducted with the ENVI 4.5 software program while data editing and integration was performed using ArcGIS 9.3. This dataset is for the shelf environment of Maug Island, Commonwealth of the Northern Marianas Islands, USA

General Information

Legal Information

This dataset has been created by US Government which means it is required to be in the public domain. However US copyright law only allows open access by US citizens, we have assumed the data is equivalently licensed as CC0 for the rest of the world as this is in the spirit of the US Government’s Open Data policy.

  • The rights statement is at

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  • Find out how to contact someone about this data at

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  • Find out how to suggest improvements to publication at

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