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Today's technology lets scientists study the ocean in a quicker and precise way. There are three tools used to map the ocean floor, sonar, satellites, and submersibles. ... Sonar is also known as echo sounding. Sonar navigates, communicates, or detects objects on or under the surface of the water, such as other vessels.
Why do we need to study the ocean floor?
Sea floor sediment provide an invaluable key to past climate change. Finely varved sediments from areas of rapid deposition provide a high-resolution record of past climate variation, and volcanic ash layers contribute to the comprehensive study of climate change on relatively short timescales.
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