. L'Est de la mer de Béring Tablette : océanographie et ressources / edited by Donald W. Hood et John A. Calder . La figure 14-4. Vue aérienne de banquise dans le Cape Cod Canal, 17 février. L'autoroute à côté du canal (de l'échelle donne la figure 2.11, Deslauriers et al. 1977). Je l'HUILE DANS GREASE Graisse la Glace La glace est une bouillie de smadl des cristaux de glace et l'eau de mer qui pousse dans les mers bordières. Martin et al. (1978) donnent une discussion préliminaire sur la façon dont cette glace se développe, et Martin et Kauffman (1980) discuter exhaustivement ses propriétés générales. La graisse de la glace dans la mer de Béring Fig. 14-5 montre une image satellite

• Contributeur: The Bookworm Collection / Alamy Banque D'Images
• ID de l’image: MAA39C
• Taille du fichier: 14,3 MB (945,3 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 2703 x 1849 px | 22,9 x 15,7 cm | 9 x 6,2 inches | 300dpi

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Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . Figure 14-4. Aerial view of oiled ice floe in the Cape Cod Canal, 17 February. The highway next to the canal gives scale (from Figure 2.11, Deslauriers et al. 1977). I OIL IN GREASE ICE Grease ice is a slurry of smadl ice crystals and sea- water which grows in the marginal seas. Martin et al. (1978) give a preliminary discussion of how this ice grows, and Martin and Kauffman (1980) discuss exhaustively its general properties. Grease ice in the Bering Sea Fig. 14-5 shows a satellite image of the Bering and Chukchi Seas for 17 March 1976. The weather charts for this day and the preceding three days show that the winds were dominated by the Siberian high- pressure system, which created northeast winds over the Bering Sea. On 17 March 1976, the air tempera- ture recorded at 1800 Z at Wales was —25 C and the wind velocity was 15 m/sec. The NOAA-4 image shows that one effect of these cold winds was to cre- ate lee-shore regions of dark, new ice formation where the older ice was blown away. These areas occur in Norton Sound from Wales to Norton Bay, on the south side of both St. Lawrence and Nunivak islands, in Kotzebue Sound from Point Hope to Kivalena, and along the Siberian coast. For the same day, Fig. 14-6 is a LANDSAT image of the polynya south of St. Lawrence Island. The LANDSAT image, which covers an area 185 km across and has a 70 m resolution, shows that long linear ice plumes form approximately parallel to the wind and extend 10-40 km downwind of the island, and that there appears to be a pile-up of new gray ice downwind of the ice plumes. A close-up of these plumes is shown in Fig. 14-7, an aerial photograph of a polynya taken at a different time from the previous two images by the NASA Convair-990 on 20 February 1973 in the Bering Sea as part of the joint U.S.-U.S.S.R. Bering Sea Experi- ment. The aircraft flew at a radar altimeter height of 147 m and

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