About

Satellite-Derived Bathymetry

Produced on a global scale for shallow water regions from multispectral imagery at sub-meter, 2 meter, and 10 meter resolutions, SDB datasets contain measurements to depths up to 30 meters, depending on water clarity. Multispectral imagery from ESA's Sentinel 2, Maxar, Satellogic, and Planet constellations and space-based laser data points from NASA's ICESat-2 satellite constitute the raw materials for SDB production. The resulting output is a continuous bathymetric surface produced from multiple satellite images and physics-based and machine learning SDB algorithms, ideal for reconnaissance and project planning, environmental mapping and change detection.

90m multi-spectrum product / Global Bathymetry

TCarta's 90 meter global bathymetry data packages are derived from digitized nautical charts, single- and multibeam survey data, LiDAR, multi-sensor SDB, altimetry data, seismic survey derived depths, and additional data sources. TCarta's proprietary gridding algorithms apply weighting schemes to each data type based on specific variables, including source, resolution and currency. The resulting output is a continuous interpolated elevation mesh that represents the best available data.