US: On the occasion of World Oceans Day (June 8), Google Earth and about a dozen research labs paired their data, talents and technology to create high res maps of seafloor terrain. Even though this group just collectively doubled what had been mapped before, Google estimates that only 5 percent of the world’s ocean floors have been mapped to date.
Columbia University’s Lamont-Doherty Earth Observatory led the charge contributing its Global Multi-Resolution Topography (GMRT) Synthesis and some 20 years worth of data from 500 ship cruises. The interactive topo maps they created portray an underwater area bigger than North America.
According to the US National Oceanic and Atmospheric Administration, a research participant in this project, such visualisations help scientists understand natural and man-made disasters including: tsunami events and runups, earthquakes, volcanic eruptions, changes in coastal and deep-ocean sea levels, storm surges and contaminant dispersal.
According to the Lamont-Doherty Earth Observatory, one of the research participants in this project, “Scientists have learnt much. For instance, researchers can see details of earthquake faults and underwater landslides. Shifts in the seafloor can trigger tsunamis, as shown by this year’s disaster in Japan, and the 2004 wave that swept Sumatra. The sharper imagery helps scientists assess the risk in various regions, including along the US-Canada west coast. The maps also bring erupting mid-ocean ridges into sharper focus and help scientists understand volcanic eruptions on earth, the vast majority of which occur hidden far from view on the ocean floor.”
Other research entities that contributed to the World Oceans Day 2011 seafloor mapping effort with Google Earth include: the Monterey Bay Aquarium Research Institute, Scripps Institution of Oceanography, University of Hawaii, University of New Hampshire, University of Washington, the U.S. Coast Guard, the U.S. Navy, Woods Hole Oceanographic Institution, the Leibniz Institute of Marine Sciences at the University of Kiel and the Hydrographic and Oceanographic Service of the Chilean Navy.