which is greater: the average depth of the ocean or the average elevation of the continents?
(c) The Indian Ocean is almost entirely in the Southern Hemisphere. (d) The Arctic Ocean is exclusively in the Northern Hemisphere. 3. The average depth of the ocean basins is 3800 meters below sea level, and the average elevation of the continents is a mere 840 meters. 4. The echo sounder pulse travels a distance equal to twice the water depth. In 6 seconds the pulse travels 9000 meters (1500 m/sec Ã 6 sec = 9000 m); thus the depth (1/2 of 9000 meters) is 4500 meters.