The Submarine Topography of Bogoslof

B ) OGOSLOF Island, when viewed from a passing ship, is a small, barren, storm-beaten island in Bering Sea, with precipitous, blue-black cliffs and dark beaches. It is quite otherwise when viewed as a submarine feature, for then the insignificant rocks are seen to be the mere tip of a great submerged volcano. The base of this impressive mountain is some eight miles in diameter; its truncated top is more than a mile in diameter and is covered by a few fathoms of water. The small island-it is about a mile long and less than half a mile wide at the widest part lies in its center. The true conformation of the volcano and its surroundings was revealed for the first time by the survey made in I935 by a United States Coast and Geodetic Survey party on the Discoverer, under command of Lieutenant Commander H. B. Campbell. The results are presented in Plate IV. The beautifully symmetrical cone is seen towering more than 5000 feet above the northern submerged slope of the Aleutian Archipelago, which is here traversed by a remarkable system of submarine valleys

Geography · Submarine · Geology · Methane Hydrates and Related Phenomena · Oceanography