The Uncharted Seamounts

The US Navy has run into uncharted seamounts, most recently a year and a half ago in the South China Sea. The new study did not use sonar, which is kind of the standard, what people might expect for mapping underwater. What technology do they use instead to try to find all these seamounts? Yeah. This is building off a technique that's been used for a couple of decades where you have these radar equipped satellites that measure the height of the ocean worldwide. And so with those little slopes, these changes in the angle of the water, you can make a pretty, pretty good guess of the depth of the seamount.

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