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ژرفاسنجی

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ژرفاسنجی

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thumb|upright=1.7| thumb|right|Animation reveals oceanic floors and seabeds. Continental shelves appear mostly by a depth of 140 meters, [[mid-ocean ridges by 3000 meters, and oceanic trenches at depths beyond 6000 meters.]] thumb|right|A seafloor map captured by NASA

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Commons category
Bathymetry
different from
hydrographic survey
is the study of
bathymetric chart
facet of
seabed
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