Mosaic of gridded multibeam bathymetry and bathymetry derived from multispectral IKONOS satellite imagery of Tutuila Island, American Samoa, USA
Gridded multibeam bathymetry is integrated with bathymetry derived from multispectral IKONOS satellite data. Gridded (5 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 Tutuila Island, American Samoa, USA.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "NOAA PIFSC CRED PIBHMC and DJLab OSU",
"@type": "vcard:Contact",
"hasEmail": "mailto:hogrefek@geo.oregonstate.edu"
}
|
| describedByType | application/octet-steam |
| description | Gridded multibeam bathymetry is integrated with bathymetry derived from multispectral IKONOS satellite data. Gridded (5 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 Tutuila Island, American Samoa, USA. |
| distribution |
[
{
"@type": "dcat:Distribution",
"mediaType": "placeholder/value",
"downloadURL": "http://www.soest.hawaii.edu/pibhmc/pibhmc_amsamoa_tutuila_bathy.htm",
"describedByType": "application/octet-steam"
}
]
|
| identifier | tut_dbmb_metadata |
| issued | 2009-08-07T00:00:00.000+00:00 |
| keyword |
[
"CoRIS_Metadata",
"Benthic Habitat Mapping and Characterization - American Samoa and the U.S. Pacific Remote Island Area",
"1084",
"EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry",
"EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Water Depth",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Remote Sensing > Satellite (digital scans) > IKONOS",
"Slope",
"Bathymetry",
"Multibeam sonar",
"Geographic Information > Bathymetry",
"Tutuila Island",
"American Samoa",
"United States of America",
"OCEAN BASIN > Pacific Ocean > American Samoa > Tutuila Island (14S170W0016)",
"COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Tutuila Island (14S170W0016)",
"AmSam"
]
|
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2009-08-07T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA PIFSC CRED PIBHMC and DJLab OSU",
"@type": "org:Organization"
}
|
| rights | otherRestrictions, unclassified |
| spatial | -170.484814,-14.384053,-170.928197,-14.195351 |
| temporal | 2000-11-26T00:00:00+00:00/2006-03-13T00:00:00+00:00 |
| title | Mosaic of gridded multibeam bathymetry and bathymetry derived from multispectral IKONOS satellite imagery of Tutuila Island, American Samoa, USA |
