Multibeam Sonar Provides the Best Modern Technique for Obtaining Seafloor

question 44

Multiple Choice

Multibeam sonar provides the best modern technique for obtaining seafloor bathymetry, so why has it not been used for the entire ocean?

• A) Oceanographers simply have not had time to process all the data.
• B) It does not work in deep water.
• C) It is too expensive, requiring many ships many years to survey the entire ocean.
• D) It does not work where there is ice.

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