Datové sady / Bathymetry 1M XYZ of St. John (South Shore - Area 2), US Virgin Islands, 2004, UTM 20N WGS84


Bathymetry 1M XYZ of St. John (South Shore - Area 2), US Virgin Islands, 2004, UTM 20N WGS84

Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
beta

Shrnutí

Co poskytovatel nabízí?
ongoing release of a series of related datasets

Databázová licence
Nevztahuje se

Licence na obsah
Creative Commons CCZero

Způsob ověření
ověřený automaticky

Popis

This dataset contains a comma-delimited ASCII XYZ text file with easting, northing, and depth in meters values for the bathymetry of the south shore of St. John, US Virgin Islands. XYZ values are derived from a 1m resolution gridding process. Due to the large file size of the St. John project area, it was divided into four component areas for improved manageability, named STJ_1m_1, STJ_1m_2, STJ_1m_3, and STJ_1m_4 from west to east. NOAA's NOS/NCCOS/CCMA Biogeography Team and NOAA/NOS/OCS/HSD personnel, in collaboration with NOAA vessel Nancy Foster and territory, federal, and private sector partners, acquired multibeam bathymetry data in the US Virgin Islands from 2/18/04 to 3/5/04. Data was acquired with a pole-mounted Reson 8101 ER multibeam echosounder (240 kHz) and processed by a NOAA contractor using CARIS HIPS v5.4 software. Data has all correctors applied (attitude, sound velocity) and has been reduced to mean lower low water (MLLW) using final approved tides from NOAA COOPS. Data is in UTM zone 20, datum WGS84. The processed CARIS data was used to generate a CARIS BASE surface based on swath uncertainty with footprint size 3*3. A comma delimited ASCII XYZ file was then exported from the BASE surface. While the project was conducted to meet IHO Order 2 accuracy standards, there is a roll artifact (averaging 0.5m high) in the dataset that the user should take into consideration when performing any analysis.