Derived bathymetry from IKONOS satellite imagery of nearshore benthic habitats
Methods used were adapted from a "cookbook" of instructions developed by Kyle Hogref
for using IKONOS imagery data to derive seafloor elevations in optically clear
water. This dataset was derived from high-resolution (2 m) imagery from DigitalGlobe's
WorldView-2 sensor of the Kaanapali area of Maui, Hawaii. Sensor bands 1,2
and 5 (coastal, blue and near IR respectively) were used to derive depth information.
The method assumes uniform water clarity but deviations from that condition
made extraction difficult in water greater than 30 m depth in the Kaanapali scene
used. Results show that biotic material or sediment in the water column skewed results
shallower if the material has a high albedo and deeper if the material has a low
albedo. Nearshore areas were significantly less impacted in the Kaanapali area,
due to the geomorphology of the area and the hi resolution and quality of the imagery,
allowing visual descrimination of apparent sediment in the water column.
For presentation purposes the map product shows an Inverse Distance Weighted interpolated
bathymetry surface, restricted to data within 600 m of the shoreline.
Complete Metadata
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|---|---|
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| contactPoint |
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"fn": "Rooney, John JB",
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|
| describedByType | application/octet-steam |
| description | Methods used were adapted from a "cookbook" of instructions developed by Kyle Hogref for using IKONOS imagery data to derive seafloor elevations in optically clear water. This dataset was derived from high-resolution (2 m) imagery from DigitalGlobe's WorldView-2 sensor of the Kaanapali area of Maui, Hawaii. Sensor bands 1,2 and 5 (coastal, blue and near IR respectively) were used to derive depth information. The method assumes uniform water clarity but deviations from that condition made extraction difficult in water greater than 30 m depth in the Kaanapali scene used. Results show that biotic material or sediment in the water column skewed results shallower if the material has a high albedo and deeper if the material has a low albedo. Nearshore areas were significantly less impacted in the Kaanapali area, due to the geomorphology of the area and the hi resolution and quality of the imagery, allowing visual descrimination of apparent sediment in the water column. For presentation purposes the map product shows an Inverse Distance Weighted interpolated bathymetry surface, restricted to data within 600 m of the shoreline. |
| distribution |
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|
| identifier | gov.noaa.nmfs.inport:25280 |
| issued | 2016-01-01T00:00:00.000+00:00 |
| keyword |
[
"467",
"Benthic Habitat Mapping and Characterization in the Pacific Islands Region",
"Mapping and EcoSpatial Information Products to Support Coral Reef Ecosystem Management in the Pacific Islands Region",
"Geographic Information > Bathymetry",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs",
"earth science > oceans > bathymetry/seafloor topography > bathymetry",
"surface measurements",
"Coral Reef Conservation Program",
"US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division; Coral Reef Ecosystem Program",
"Equatorial Pacific Ocean",
"North Pacific Ocean",
"Pacific Remote Islands Marine National Monument",
"South Pacific Ocean",
"SEA FLOOR",
"CRED",
"CREP",
"Coral Reef Ecosystem Division",
"Coral Reef Ecosystem Program",
"PIFSC",
"Pacific Islands Fisheries Science Center",
"PRIA",
"Pacific Remote Island Areas",
"DOC/NOAA/NMFS/PIFSC > Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
"Bathymetry"
]
|
| landingPage | https://www.fisheries.noaa.gov/inport/item/25280 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2016-01-01T00:00:00.000+00:00 |
| publisher |
{
"name": "Pacific Islands Fisheries Science Center",
"@type": "org:Organization"
}
|
| references |
[
"https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/pifsc/dmp/pdf/25280.pdf"
]
|
| rights | otherRestrictions, unclassified |
| spatial | -156.647,20.8357,-156.776,20.9839 |
| temporal | 2010-04-06T00:00:00+00:00/2010-04-06T00:00:00+00:00 |
| title | Derived bathymetry from IKONOS satellite imagery of nearshore benthic habitats |
