Mosaic of gridded multibeam bathymetry and bathymetry derived from multispectral IKONOS satellite imagery of Rose Atoll, American Samoa, USA

Metadata Updated: February 7, 2018

Gridded multibeam bathymetry is integrated with bathymetry derived from multispectral IKONOS satellite data. Gridded (5 m cell size) multibeam bathymetry were collected aboard the R/V AHI (Acoustic Habitat Investigator). Bathymetry values shallower than 25 m were derived from multispectral IKONOS satellite image by analyzing 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 multibeam depths determined the variables of y-intercept, blue slope and green slope values. Variables were 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 bank and lagoon environment of Rose Atoll, American Samoa, USA.

Access & Use Information

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Dates

Metadata Date January 24, 2017
Metadata Created Date February 7, 2018
Metadata Updated Date February 7, 2018
Reference Date(s) June 7, 2010 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NOAA CSW Harvest Source

Graphic Preview

Gridded Bathymetry

Additional Metadata

Resource Type Dataset
Metadata Date January 24, 2017
Metadata Created Date February 7, 2018
Metadata Updated Date February 7, 2018
Reference Date(s) June 7, 2010 (publication)
Responsible Party Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) (Point of Contact)
Contact Email
Access Constraints Use Constraints: These data are not to be used for navigation purposes. Please acknowledge NOAA Pacific Islands Fisheries Science Center, the Joint Institute for Marine and Atmospheric Research (JIMAR) University of Hawaii and Davey Jones Locker GIS Laboratory Oregon State University as the sources of this information., Access Constraints: None
Bbox East Long -168.136652
Bbox North Lat -14.527710
Bbox South Lat -14.561023
Bbox West Long -168.173489
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Gridded Bathymetry
Graphic Preview File http://www.soest.hawaii.edu/pibhmc/amsamoa_images/Rose_bathymetry_mb&IKONOS_445.jpg
Graphic Preview Type JPEG
Guid
Harvest Object Id b604b9da-8dc6-4435-b786-ccf43635ea43
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence These data are not to be used for navigational purposes. NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2002-03-05
Temporal Extent End 2006-03-13

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