. La messa a terra sotto il mare : la storia. Fondo dell'oceano; geofisica Marine. Setta. 2] THK Min-OCEANIC RIDGE 401. Fig. 11. KartlKniako epicenters nel Mare di Norvegia, 1905-56. Tracciati f"rf)ni di compilazione (iiitenberg e Richter (1954) e l'epicentro carte degli Stati Uniti costa e Geodetic Survey. (Dopo Heezen e Ewing, 1961.) 7. Bacino artico tra Spitsbergen e la Groenlandia, il norvegese bacino marittimo si restringe a meno di 200 miglia dal shelf break per shelf break. Questa area è stata indicata come Nansen il davanzale in quanto segna il davanzale o soglia per acqua-masse che scorre tra

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. The Earth beneath the sea : History. Ocean bottom; Marine geophysics. SECT. 2] THK Min-OCEANIC RIDGE 401. Fig. 11. KartlKniako epicenters in the Norwegian Sea, 1905-56. Plotted f"rf)ni compilation of (iiitenberg and Richter (1954) and the epicenter cards of the United States Coast and Geodetic Survey. (After Heezen and Ewing, 1961.) 7. Arctic Basin Between Spitsbergen and Greenland, the Norwegian Sea basin narrows to less than 200 miles from shelf break to shelf break. This area has been referred to as the Nansen's Sill as it marks the sill or threshold for water-masses flowing between the Norwegian Sea and the Arctic Basin (Fig. 11; and Heezen and Ewing, 1961). That the depths across Nansen's Straits are less than those both to the north and to the south is apparent from existing soundings. However, the existence of an east-west ridge at Nansen's Sill is pure supposition. In considering the course of the mid-oceanic ridge through the length of the Gulf of Aden we saw that, as the Gulf narrowed, the depth of the basins flanking the median ridge shallowed accordingly. Nansen's Sill lies at the narrowest part of the ocean and hence, by analogy with the Gulf of Aden, the depth here should be the shallowest. Hope (1959), however, states that "recent Soviet exploration has in fact revealed a deep-water trough completely piercing Nansen's Sill". He also quotes Frolov and Pasecki (1958) as reporting that "on the 80th parallel the trough is 3000 m deep and 50 km wide between 1000 m isobaths. Its orientation is roughly northward". Hope points out that "this trough then. 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 work.. Hill, M. N. (Maurice Neville), 1919-. New York : Interscience Pub.

Parole chiave associate all'immagine

• bookcentury1900
• bookcollectionbiodivers
• booksubjectoceanbottom