共查询到20条相似文献，搜索用时 31 毫秒
1.
从海底地壳开裂处涌出一般带有大量生物的深海热泉的现象已众所周知。一开始在太平洋和大西洋中找到了它们 ,而在 2 0世纪和 2 1世纪交接期印度洋中也发现了热液 ,而后就输到高纬度的北极海区了。在极区盆地中应当有热液已有过报道。例如 ,1 993年 9月 ,俄 德联合北极考察队乘坐“极地”(Polarstern)号破冰船 ,在拉普帖夫海加克利 (Гакке х)海岭东端 (77°45′N、1 2 5° 55′E ,水深 1 990m) ,获得了对研究热液非常有意义的样品 ,证实了在这个海岭上存在着热液活动 ;但是 ,在 2 0 0 1年 ,美国和德国破冰船“健康”(Healy)号和“极… 相似文献
2.
3.
4.
C.M. Mason 《Marine Policy》1977,1(1):73-74
An account of the research project of the North Sea Study Group of the Royal Institute of International Affairs. 相似文献
5.
On the phenology of North Sea ichthyoplankton 总被引：2，自引：1，他引：2
Greve Wulf; Prinage Sabine; Zidowitz Heike; Nast Jutta; Reiners Frank 《ICES Journal of Marine Science》2005,62(7):1216-1223
6.
7.
8.
Predictions of maximum wave height Hmax are made at Cromer, Happisburgh and Lowestoft on the East Anglian Coast using the formula Hmax = CKRKS U2/g where C is a constant, KR, KS are refraction and shoaling cofficients, U is wind speed and g is the acceleration due to gravity. Comparisonsare made with the models of Darbyshire Draper (1963) and Bretschneider (1958) Using this wave prediction formula, an estimate of the wave climate in the southern North Sea is deduced for the gales of 2–3 January 1976. 相似文献
9.
The gadoid outburst in the North Sea 总被引：3，自引：3，他引：3
10.
Sasithorn Aranuvachapun 《Ocean Engineering》1977,4(2):91-99
The computerised model on surface wave refraction by Wilson (1966) is applied to the topographic data of the southern North Sea. A series of wave refraction diagrams has been produced and the refraction coefficients are evaluated from these diagrams. It is found that there is an agreement between these refraction coefficients and the coefficients calculated from wave data obtained at various stations in the same area. Both the model and the data suggest that the area of wave ray convergence is highly coherent with the area of concentrated wave energy in which the higher waves are detected.It is the purpose of this paper to demonstrate the relationship between the theoretically derived model and the real data obtained in the southern North Sea where the bottom topography provides a pronounced refraction effect on surface waves as well as to show some spatial variation of wave height in that area. 相似文献
11.
North Sea cod recovery? 总被引：3，自引：3，他引：3
12.
13.
14.
15.
16.
17.
对 1 990年初《英国石油》的StewartS和《地球科学成果》的AllenJ获得的北海海底地震研究资料进行分析后发现 ,在英国东部沿岸恒比尔湾以东 1 3 0km处有一个以前未知的陨石坑 ,它是 60～ 65Ma前产生的。首次发现者按最近的海底地形细节将其命名为西尔皮特。与陆上类似形成物不同的是 ,它几乎未遭受侵蚀 ,是因为受到 3 0 0～ 1 50 0m厚的沉积岩层的保护 ,使它未受侵蚀作用的破坏。在陨石坑的中央是一个杯状凹地 ,直径约3km ,带有一个特殊的中心小丘。它被 1 0个高数十米、规模较小的同心长垣包围。外部长垣的直径达 2 0km。至今一般认为 ,… 相似文献
18.
Changes in North Sea gadoid stocks 总被引：5，自引：1，他引：5
19.
Hypotheses concerning the circulation of the northern North Sea 总被引：1，自引：0，他引：1
20.