How is sound used to map the seafloor?

How is sound used to map the seafloor?High-resolution maps of the seafloor (bathymetric maps) are important for ship navigation, geological research, habitat and ecosystem studies, and military activities. From antiquity to World War I, the depth of the ocean was measured by using a weighted rope with markings on it. Once sonar became commercially available … Continue reading How is sound used to map the seafloor?