Seafloor mapping: The two modern methods of mapping the sea…
Seafloor mapping: The two modern methods of mapping the seafloor (water depth) are echo sounding (sonar) satellite altimetry 1. Explain how echo sounding works (2-4 sentences). Be sure to include what is measured how these measurements are converted to water depth. 2. Briefly state one advantage of using satellite altimetry over echo sounding.
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