NLA and TCarta Collaborate in Bowden Harbour, Jamaica
The National Land Agency of Jamaica and TCarta Caribe join forces to deploy Satellite Derived Bathymetry in Bowden Harbour, Jamaica.
The Bowden Harbour collaborative case study demonstrates the applications of Satellite Derived Bathymetry (SDB) to support single beam surveys, to update nautical charts, and to improve hydrographic survey efficiency.
Jamaica Defense Force Coast Guard provided four (4) boat crew coxswain and boat aids and NLA had also four (4) personnel as a part of the data acquisition team.
TCarta's team in Denver, Colorado and Kingston, Jamaica that communicated closely with the NLA and produced data in Bowden Harbour.
Bowden Harbour Area of Interest
Area ~ 3.4 square kilometers
Digitized Admiralty Chart 257-Plan B Depth Points
TCarta used this digitized nautical chart data as calibration and validation data to produce 10m Satellite Derived Bathymetry in Bowden Harbour.
In advance of deploying any equipment or personnel, hydrographers can reference SDB to plan an efficient and safe survey.
Survey Planning with Satellite Derived Bathymetry
Depth points from the digitized nautical chart.
TCarta's Bowden Harbour Satellite Derived Bathymetry products highlighted no-go areas through the provision of a shoalest points data layer.
No-go areas represented by red polygons, shoalest points represented by green point features with adjacent depths in meters.
Single-beam echo sounder data collected by NLA for the purpose of improving Admiralty Chart 257-Plan B.
- 171 development lines (planned lines)
- 43 check lines
The Agency shared the resulting survey data with TCarta. The single beam depth data was implemented as ground truth data in production of "post-survey" Satellite Derived Bathymetry.
SBES survey data
This final iteration of Bowden Harbour SDB demonstrated the technology's ability to infill no-data gaps and to extend coverage into no-go areas.
Satellite Derived Bathymetry produced using NLA's SBES as calibration and validation data.
3D view of the Satellite Derived Bathymetry produced using NLA's SBES as calibration and validation data.
Hydro International Article Coming Soon...
From the article:
"[SDB] is an excellent tool for planning and feasibility study of traditional bathymetric surveys to be undertaken especially where inadequate chart data exists, outdated soundings more than 30 years and/or lead line depths."
