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Preliminary hard and soft bottom seafloor substrate map derived from an unsupervised classification of gridded backscatter and bathymetry derivatives at Tutuila Island, American Samoa, South Pacific.
Preliminary hard and soft seafloor substrate map derived from an unsupervised classification of multibeam backscatter and bathymety derivatives at Tutuila Island, American Samoa, South Pacific. The dataset was derived using a combination of Simrad em3002d and Reson 8101 backscatter, bathymetric variance and bathymetric rugosity. The sonar frequencies are 300 kHz and 240 kHz for the em3002d and the 8101 data respectively and all data were resampled to 5 m grid cell size prior to the classification. Initial supervised classifications of the backscatter data into hard and soft seafloor substrates, using seafloor photographs for groundtruthing and to define regions of interest, were used to define unsupervised class types and to visually evaluate the accuracy of the unsupervised classification seafloor substrate map.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "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)",
"@type": "vcard:Contact",
"hasEmail": "mailto:nmfs.pic.credinfo@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | Preliminary hard and soft seafloor substrate map derived from an unsupervised classification of multibeam backscatter and bathymety derivatives at Tutuila Island, American Samoa, South Pacific. The dataset was derived using a combination of Simrad em3002d and Reson 8101 backscatter, bathymetric variance and bathymetric rugosity. The sonar frequencies are 300 kHz and 240 kHz for the em3002d and the 8101 data respectively and all data were resampled to 5 m grid cell size prior to the classification. Initial supervised classifications of the backscatter data into hard and soft seafloor substrates, using seafloor photographs for groundtruthing and to define regions of interest, were used to define unsupervised class types and to visually evaluate the accuracy of the unsupervised classification seafloor substrate map. |
| distribution |
[
{
"@type": "dcat:Distribution",
"mediaType": "placeholder/value",
"downloadURL": "http://www.soest.hawaii.edu/pibhmc/pibhmc_amsamoa_tutuila_geomorph.htm",
"describedByType": "application/octet-steam"
}
]
|
| identifier | tut_unspv_hardvsoft_5m |
| issued | 2008-06-02T00:00:00.000+00:00 |
| keyword |
[
"CoRIS_Metadata",
"Benthic Habitat Mapping and Characterization - American Samoa and the U.S. Pacific Remote Island Area",
"1084",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Habitats",
"EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > Habitat Mapping",
"EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Soft Seafloor Substrate",
"EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Hard Seafloor Substrate",
"Geographic Information > Habitats",
"Hard bottom",
"Soft bottom",
"Unsupervised Classification",
"Acoustic Imagery",
"Multibeam Backscatter",
"Backscatter",
"Bathymetry",
"Multibeam sonar",
"Substrate",
"Tutuila Island",
"American Samoa",
"South Pacific",
"Pacific Ocean",
"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 | 2008-06-02T00:00:00.000+00:00 |
| publisher |
{
"name": "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)",
"@type": "org:Organization"
}
|
| rights | otherRestrictions, unclassified |
| spatial | -170.484814,-14.384053,-170.928197,-14.195351 |
| temporal | 2004-02-25T00:00:00+00:00/2006-02-26T00:00:00+00:00 |
| title | Preliminary hard and soft bottom seafloor substrate map derived from an unsupervised classification of gridded backscatter and bathymetry derivatives at Tutuila Island, American Samoa, South Pacific. |
