Underwater GPS changes the map
Mapping technique transforms how oceanographers monitor the seafloor
A combination of advanced imaging, GPS buoys and software improves seafloor observation.
Credit and Larger Version
February 1, 2018
In Guam, researchers developed a method for mapping underwater areas that is transforming how oceanographers observe the seafloor. Data from global positioning satellites are the primary method for mapping the Earth, but it's impossible for global positioning system (GPS) signals to pass through water, making detailed mapping of underwater features difficult. By synchronizing underwater cameras with GPS buoys and using software to geo-tag photographs, NSF-funded researchers have mapped all of Guam's Pago Bay and Apra Harbor.
Office of Integrative Activities
#1457769 Guam Ecosystems Collaboratorium