. Collected reprints, Essa Institute for Oceanography. Oceanography AMLIA BASIN, ALEUTIAN ARC PROFILES 573. GEOGR. REV,, OCT., 1966 Scale of Nautical Miles I I I I I M I M I 10 0 T- 10 —r- 20 T- 30 —I— 40 50 Fig- 3—Profiles of Amlia Basin, alignment of which is shown in Figure 4. Vertical exaggeration is about x8. of Amlia Basin arc in marked contrast with the more uniform rchef of the slope north of Atka and Adak Islands.' Three large canyons cut through the narrow ridge that separates the de- pression from the northern slope. From the floor of Amlia Basin at about 600 fathoms A
. Collected reprints, Essa Institute for Oceanography. Oceanography AMLIA BASIN, ALEUTIAN ARC PROFILES 573. GEOGR. REV,, OCT., 1966 Scale of Nautical Miles I I I I I M I M I 10 0 T- 10 —r- 20 T- 30 —I— 40 50 Fig- 3—Profiles of Amlia Basin, alignment of which is shown in Figure 4. Vertical exaggeration is about x8. of Amlia Basin arc in marked contrast with the more uniform rchef of the slope north of Atka and Adak Islands.' Three large canyons cut through the narrow ridge that separates the de- pression from the northern slope. From the floor of Amlia Basin at about 600 fathoms Amlia Canyon descends northward to the 1200-fathom isobath at 52°5o'N, where it makes an abrupt turn to the west and then continues downslope to its terminus on the Bering Sea floor below 1900 fathoms. Se- guam Canyon begnis in the eastern end of the depression and descends north- ward to 1150 fathoms, where it makes a conspicuous turn to the east and then descends to its terminus below 1900 fathoms. From the west end of Amlia Basin, Atka Canyon descends along a nearly straight path down the north slope to the floor of Bering Sea just west of the prominent ridge. 5 Richard B. Perry and Haven Nichols: Bathymetry of Adak Canyon, Aleutian Arc, Alaska, Bull. Gecl. Soc. of America, Vol. 76, 1965, pp. 365-370; Haven Nichols and Richard B. Perry: Bathymetry of the Aleutian Arc, Alaska (6 maps, U. S. Coast and Geodetic Survey, 1966).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Institute for Oceanography; Atlantic Oceanographic Laboratories (U. S. ); Pacific Oceanographic Laboratories; United States. Environmental Science Services Administration. Research Laboratories. Washington, D. C. : U. S. Dept. of Commerce, Environmental Science Services Administration, Research Laboratories : For sale by the Supt.
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