共查询到20条相似文献，搜索用时 31 毫秒
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Merryfield B 《Science (New York, N.Y.)》2005,308(5722):641-642
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Munk W 《Science (New York, N.Y.)》2003,300(5628):2041-2043
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Hedberg HD 《Science (New York, N.Y.)》1979,204(4389):135-144
The base of the continental slope, combined with the concepts of a boudary zone, a technical advisory boundary commission, and special treatment for restricted seas, offers a readily attainable, natural, practicable, and equitable boundary between national and international jurisdiction over the ocean floor. There is no point in bringing into the boundary formula the unnecessary added complication of thickness of sediments, as recently proposed. Review of the U.S. offshore brings out the critical importance with respect to energy resources of proper choice of boundary principles and proper determination of the base-of-continent line about our shores. The advice of the pertinent science and technology community should urgently be sought and contributed to decisions on offshore boundaries. 相似文献
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The study of oceanic crust continues to be important because of the presence of economic resources in oceanic areas and because many fundamental problems of geologic evolution are best solved from studies of the ocean. Although modeling and syntheses of existing data remain important, key breakthroughs in the future will come from the application of new technology such as multichannel towed seismic arrays, deep-towed side scan sonars, improved thermal probes, deep drilling, and satellite altimeters. 相似文献
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Malakoff D 《Science (New York, N.Y.)》2003,301(5636):1034-1037
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Wooster WS 《Science (New York, N.Y.)》1981,212(4496):754-755
In more than one-fourth of recent cases, U.S. marine scientists desiring to work off the shores of other countries were denied access or encountered inordinate delays in approval of their requests. The regime for marine scientific research proposed in the draft text of the Convention on the Law of the Sea may alleviate some difficulties but will not change the predominant influence of political considerations on decisions affecting clearance for research. 相似文献
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Stanley GD 《Science (New York, N.Y.)》2007,317(5841):1032-3; author reply 1032-3
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Hedberg HD 《Science (New York, N.Y.)》1976,191(4231):1009-1018
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Kerr RA 《Science (New York, N.Y.)》1981,213(4510):851-852
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利用1958-2010年逐年的12月和1月的NCEP/NCAR格点资料,分别对北半球太平洋和大西洋、欧亚大陆和北美大陆这2组区域的500 hPa高度场进行了奇异值(SVD)分解。结果表明院所选的2组区域太平洋和大西洋、欧亚大陆和北美大陆500 hPa的位势高度场存在协同变化的关系。当太平洋地区位势高度场偏高时,大西洋地区的位势高度场偏低,反之亦然。冬季的1月上述现象最为明显。上述现象在陆地上比海洋上明显,大洋上高纬度比低纬度明显。 相似文献
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