We know that the ocean depth is varies from ocean to ocean. Mariana trench is about 11 km deep. If we consider as a whole, what is the average depth of the ocean?
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$\begingroup$ The average depth of the Pacific Ocean or of the global oceans? $\endgroup$– daniel.heydebreckCommented Jul 4, 2016 at 6:57
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$\begingroup$ It is global ocean $\endgroup$– Dinidu HewageCommented Jul 4, 2016 at 6:58
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2 Answers
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About four kilometers, see, for example: http://www.mbgnet.net/salt/oceans/data.htm But bear in mind that much of the oceans, especially in the southern hemisphere, have scarcely been mapped at all, so it is currently impossible to give an accurate estimate.
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$\begingroup$ Surprised. Would think they'd send wavelengths that are scattered by rock but not water from satellites and get a pretty solid picture. $\endgroup$ Commented Jan 6, 2017 at 21:06
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From NOAA: (Official US Science) A recent estimate for the average depth of the ocean is 3,682 meters, or 12,080 feet. This is an estimate from 2010. Older estimates have deeper average ocean.
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2$\begingroup$ please provide a link to your source $\endgroup$– arkaiaCommented Jan 6, 2017 at 0:40