This tool allows importing, exporting and merging bathymetry data from a number of on-line and open source datasets. The available datasets are given in Table 4.1:
Available Databases |
Coverage |
Resolution (approx.) |
Reference System |
Source |
|---|---|---|---|---|
gebco08 |
Global |
926 m (1) / 29.630 m (6) |
Horizontal: WGS84 |
British Oceanographic Data Centre (BODC) |
hawaii |
Hawaii |
55 m (1) / 872 m (5) |
Horizontal: WGS84 / UTM zone 4N |
USGS (Curt Storlazzi) |
ngdc_crm |
Coastal bathymetry |
93 m (1) / 11.852 m (8) |
Horizontal: WGS84 |
NOAA |
srtm30plus_gom |
Gulf of Mexico |
926 m (1) / 3.704 m (3) |
Horizontal: WGS84 |
|
usgs_social |
Southern California |
3 m (1) / 384 m (8) |
Horizontal: WGS 84 / UTM zone 11N |
USGS |
rws_vakloadingen |
The Netherlands |
20 m (1) / 320 m (5) |
Horizontal: Amersfoort / RD New |
Rijkswaterstaat |
srtm41 |
Global topography |
93 m (1) / 47.407 m (10) |
Horizontal: WGS 84 |
|
gulf_of_mexico |
Gulf of Mexico |
93 m (1) / 1481 m (5) |
Horizontal: WGS 84 |
SURA |
The bathymetry data are available with different resolutions according to different zoom levels indicated in brackets in the column resolution.
The Export key in the Working Space allows the user exporting data within a predefined Polygon. The Polygon can be defined using the key “Draw Polygon” and then drawing a polygon with the mouse (left click to draw the polygon, right click to close it).
“Delete Polygon” is used to delete the polygon.
“Load Polygon” allows loading an existing polygon file in ASCII format (*.pol).
“Save Polygon” allows saving the polygon file in ASCII format (*.pol).
