The Eastern Bering Sea Shelf The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . easternberings00hood Year: 1981 Remote sensing analysis of ice growth and distribution 153 Figure 10-13. Lead orientation, 16-19 Marcii 1979. Leads follow the same general trend downwind as the floes. Satellite imagery such as that seen in Fig. 10-11, TIROS, and Figs. 10-9 and 10-10, LANDSAT, were used to study small-scale variations of these ice bands. These band features are not an isolated occurrence. They are often noted on FWS charts and have been stud
The Eastern Bering Sea Shelf The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . easternberings00hood Year: 1981 Remote sensing analysis of ice growth and distribution 153 Figure 10-13. Lead orientation, 16-19 Marcii 1979. Leads follow the same general trend downwind as the floes. Satellite imagery such as that seen in Fig. 10-11, TIROS, and Figs. 10-9 and 10-10, LANDSAT, were used to study small-scale variations of these ice bands. These band features are not an isolated occurrence. They are often noted on FWS charts and have been studied by Muench and Charnell (1977). They can also be seen in a LANDSAT 3 image taken 5 March 1979 (Fig. 10-16), and on the 14 March imagery (Fig. 10-14). An assessment of change in an ice band can be made using a photograph from the C130 overflight (Fig. 10-17). Although this image was taken approjj- imately three hours earlier than the C131 SLAR image, the basic shape of the formation is still recog- nizable and can be seen to be made up of small, angular floes. Similar photography from successive altitudes was used to study the characteristics of the floes within these bands. Fig. 10-18 shows a cross section of one of these bands. The distance across the band is 20 km. Darker floes in the middle of the band indicate thinner ice. The darker color and the nature of the surface patterns suggest that these floes are rotting. Ship's personnel who had occupied stations on similar floes reported that this type of ice was melting rapidly, and that it was thin enough to respond plastically to waves which were propagating through the ice (Pease 1979; Martin and Bauer, this volume). Fig. 10-19, taken from a lower altitude, shows another cross section of a band. The flightline was from west to east, the wind from the northeast.
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