bathymetry

Coastal bathymetry of Bonaire from 0 to 20 meter depth at 2x2 meter resolution.

Improved AsterDEM for Bonaire rescaled to 1-meter spatial resolution and 1m height resolution.

The ASTERDEM has been improved amongst others for making a bathymetric model and for that reason the ASTERDEM was converted to contour lines, and to improve the calculations extra height points were added for the lowlands of Bonaire, as well as extra measured sea depth points that were collected in a separate campaign to calculate a new bathymetric model that interpolated the improved DEM with the measured sea depth points.

Read this report for more details.

Please contact the DCBD administratorfor more information.

Scan of paper map which is based on recordings of 1970-1972 and 1996 with additions from Kadaster and Bonaire Marine Services 2000.

Hydrographical survey of Aruba in x,y,z points: latitude [decimal degrees], longitude [decimal degrees], depth [meters]. 

The survey was done using a multi-beam surveying: a multibeam echo sounder attached to a boat sends out a wide array of beams across a "swath" of the waterbody floor. As the beams are bounced back from the waterbody floor,  the data is collected and processed.

This information has been retrieved from caris website of the royal navy of the Dutch ministry of defense

Hydrographical survey of Curacao in x,y,z points: latitude [decimal degrees], longitude [decimal degrees], depth [meters]. 

The survey was done using a multi-beam surveying: a multibeam echo sounder attached to a boat sends out a wide array of beams across a "swath" of the waterbody floor. As the beams are bounced back from the waterbody floor,  the data is collected and processed.

This information has been retrieved from caris website of the royal navy of the Dutch ministry of defense

Hydrographical survey of Bonaire in x,y,z points: latitude [decimal degrees], longitude [decimal degrees], depth [meters]. 

The survey was done using a multi-beam surveying: a multibeam echo sounder attached to a boat sends out a wide array of beams across a "swath" of the waterbody floor. As the beams are bounced back from the waterbody floor,  the data is collected and processed.

This information has been retrieved from caris website of the royal navy of the Dutch ministry of defense

Depth of Lac Bay in meters. Data acquired with lowrance HDS7 Gen 3 Totalscan transducer. The borders are not realiable. No map to snap to the coast/borders was available.

• Microsoft Excel file (longitude, latitude, depth in feet) [original file]
• Line shape file (*.shp) with depth isolines (m)
• Geotiff at a resolution of 2x2 m. The original file was interpolated using Inverse Distance Weighting (IDW) with a maximum number of 12 points for a single cell value. Interpolation boundaries at 30 meter from any given point.

Legend:

• -0.5 m    light yellow
• -5 m       green 
• -13.5 m  dark blue

Surveying subaqueous beach profiles and features beyond wading depths can be a costly process, requiring use of expensive equipment and boats. This paper describes the materials and methods of a simple, low-cost technique for underwater bathymetric surveying, herein named the diver depth-gauge profiling (DDGP) method. Although accuracy of depth data depends on the quality of the depth gauges used, it is commonly within 0.3 m. Data collection reliability was evaluated by repeated underwater beach profile surveys, and an example of its use in the Caribbean is provided.

Bathymetry (underwater depth) map for the seas surrounding Aruba, Bonaire and Curacao (GIS).

Bathymetry map of St. Eustatius created from sonar.