2003-08-26 to 2012-05-03 bathymetric data for the nearshore shelf environment of Agrihan Island in the Mariana Islands. The dataset was created by the NOAA National Centers for Environmental Information from multispectral WorldView-2 satellite imagery. Depths shallower than approximately 20 meters were derived using a multiple linear regression analysis of coastal, blue, green, and yellow spectral band values.
Use Cases
- Modeling coastal erosion or sediment transport by analyzing derived bathymetry values around the island shelf.
- Validating satellite-based bathymetry algorithms by comparing regression-derived slope and intercept variables for coastal, blue, green, and yellow bands.
- Creating base maps for marine habitat studies using the mosaiced nearshore terrain coverage.
- Assessing the accuracy of ENVI and ArcGIS processing workflows for deriving depth from multispectral radiance attenuation.
Strengths
- Near-complete spatial coverage of the nearshore terrain around Agrihan Island.
- Bathymetry derived from calibrated multispectral bands (coastal, blue, green, yellow) using a defined statistical method.
- Data processed and integrated using established software tools (ENVI 4.8 and ArcGIS 10).
Limitations
- Bathymetric depth derivation is limited to waters shallower than approximately 20 meters.
- The dataset's temporal coverage spans 2003 to 2012, which may not reflect current seafloor conditions.
- Specific accuracy metrics, row counts, and resolution details for the derived data are not provided.
Provenance
- Source
- NOAA National Centers for Environmental Information (NCEI Accession 0126914).
- Collection Method
- Bathymetry derived from multispectral WorldView-2 satellite imagery via multiple linear regression analysis of spectral band attenuation.
- Time Range
- 2003-08-26 to 2012-05-03
- Freshness
- Data last updated 2012-05-03.
- Geography
- Agrihan Island, Mariana Islands, USA.