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This map shows the topography of a small part of the subaerial western part of the Island of Hawaii as well as modern multibeam bathymetry of the west submarine flank, which covers a total area of about 8,500 km2 ( see index map). The map area includes part of the submerged flanks of the active Mauna Loa and Hualalai Volcanoes, which last erupted in 1984 and 1801 respectively. The steep and irregular submarine slope is shaped by several giant submarine landslides. They were first identified during surveys from the U.S. Geological Survey research vessel S.P. Lee in 1976 and 1978 (Normark and others, 1979) and later mapped in more detail during a swath-sonar survey (GLORIA) of the United States Hawaiian Exclusive Economic Zone in 1986 to 1991 (Lipman and others, 1988; Moore and others, 1989) as part of a cooperative venture of the U.S. Geological Survey and the British Institute of Oceanographic Sciences.
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Bathymetry of the west-central slope of the island of Hawaii