海洋生态系统动力学浅说   总被引：4，自引：1，他引：4  

管玉平  林一骅 《地球科学进展》1997,12(5):447-450

讨论了海洋生态系统动力学的研究目的，任务和特点。阐述了它的基本理论问题，此外，协同性，可预报性，突变性以及稳定性是人们关切的问题也是海洋生态系统动力学理论研究的重要内容。并对海洋生态系统动力学模型及模拟的基本概念和了描述，进而说明建模时要注意抽象与简化。最后就我国开展海洋生态系统动力学研究提出了一点看法。  相似文献   

大洋钻探（ODP）与测井地质研究   总被引：2，自引：2，他引：2  

刘光鼎  李庆谋 《地球物理学进展》1997,12(3):1-8

ＯＤＰ是ＤＳＤＰ的继续，它验证了岩石层板块构造理论，揭示出晚中生代以来的全球气候变化过过程，还带动了一批新学科，如层序地层学，锶同位素地层学的出现，使地质学从零星的描述发展到地球系统研究阶段。同时，使测井技术层次由油气，煤炭测井上升到测井地质的成因研究。  相似文献   

中国海与现代科学技术   总被引：5，自引：2，他引：5  

刘光鼎 《地球物理学进展》1997,12(4):1-26

中国既是一个大陆国家又是一个海洋国家，约３００万平方公里的海域与６５００多个岛屿如同陆地资源一样为中国人民提供了舟辑之便与渔盐之利，还蕴藏着丰富的矿产资源。  相似文献   

New palaeomagnetic results from the Kerguelen Islands     

Bernard Henry  Claude Plessard 《Geophysical Journal International》1997,128(1):73-83

New palaeomagnetic analyses have been carried out in the Kerguelen Islands on 32 lava flows of well-established age (20–22 Ma). Combined with previous studies, they yield a reliable pole for the Lower Miocene for the Antarctic plate: N = 59 flows. 349.9°E, 83.5°S, A⁹⁵= 6.1°. A reversal sequence reversed-normal has been identified in the Port Jeanne d'Arc section.  相似文献   

New limits on the motion between India and Australia since chron 5 (11 Ma) and implications for lithospheric deformation in the equatorial Indian Ocean   总被引：1，自引：0，他引：1  

Jean-Yves Royer  Richard G. Gordon  Charles DeMets  Peter R. Vogt 《Geophysical Journal International》1997,129(1):41-74

  相似文献   

Magnetic anomaly lineations from Late Jurassic to Early Cretaceous in the west-central Pacific Ocean   总被引：1，自引：0，他引：1  

Masao Nakanishi  Kensaku Tamaki  Kazuo Kobayashi 《Geophysical Journal International》1992,109(3):701-719

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我国西北夏季降水异常与太平洋海温季节演变的关系   总被引：4，自引：0，他引：4  

唐佑民 《地理学报》1992,47(5):419-429

本文利用交叉相关场的EOF分解考查了我国西北夏季降水与太平洋季节海温遥相关的结构。然后分别就我国西北夏季降水偏多年与偏少年对应的各季海温进行了自然正交（EOF）和复自然正交（CEOF）的合成分析,得到了我国西北夏季降水多、寡年对太平洋海温空间分布异常特征的季节演变。最后利用非参数跃变检验诊断了我国西北降水的跃变,并讨论了与太平洋海温跃变的联系。  相似文献   

THE EFFECTS OF SEA SURFACE TEMPERATURE ANOMALIES OVER THE MID-LATITUDE WESTERN PACIFIC ON THE ASIAN SUMMER MONSOON     

Ni Yunqi  Qian Yongfu 《Acta Meteorologica Sinica》1991,5(1):28-39

By Using the P-σ five-layer primitive equation model,three sets of numerical experiments are performedwith normal zonal mean SST(the control case),the positive SST anomalies in the Kuroshio current andeast-of-Japan Ocean(the midlatitude western Pacific),and positive SST anomalies over both the midlatitudeand the equatorial western Pacific.The experimental results show that the positive SST anomalies over themidlatitude western Pacific have great influence on the Asian summer monsoon:the Indian monsoon is weak-ened and the East Asian monsoon is intensified.This happens just reverse to the effects of positive SSTanomalies over the equatorial westero Pacific on the Asian summer monsoon.Further,the influence mechanismof the SST anomalies over the midlatitude westcrn Pacific on the Asian summer monsoon is discussed.  相似文献   

北大西洋Hatton与Gardar沉积堤上等深线流活动的沉积学标志          下载免费PDF全文

王慧中 《地质科学》1991,(4):346

 北大西洋东北部 Hatton 与 Gardar 沉积堤的早更新统沉积层分属两类不同的深海碳酸盐软泥。前者粗组份含量高,以有孔虫为主;后者明显变细,主要由超微化石组成。生物产率、水深、沉积速率及等深线流活动都有可能影响软泥的类型,但等深线流的改造作用最重要。本文进一步证实沉积堤是等深线流长期作用的产物,并自渐新世形成以来长期保持稳定。  相似文献   

THE RELATIONSHIP BETWEEN TROPICAL PACIFIC SEA SURFACE TEMPERATURE AND SUMMER RAINFALL OVER NORTHWEST CHINA   总被引：4，自引：0，他引：4       下载免费PDF全文

Zhu Bingyuan  Li Dongliang 《Acta Meteorologica Sinica》1992,6(4):470-478

In this paper,the data of summer precipitation in Northwest China were expanded by means of EOF.According tomajor eigenvectors in expansion the area of Northwest China was divided into four natural rainfall regions.Amongthem the region of greatest precipitation variability is found over the East Qinghai-North Shaanxi region,includingEast Qinghai,Central and East Gansu,Ningxia and North Shaanxi.There is apparent teleconnection between the firstand second time-dependent coefficients in EOF expansion and the tropical Pacific SST in the corresponding period andearlier months.The variation of the east tropical Pacific SST in winter and spring is able to predict precipitation trend ofNorthwest China next summer.Moreover,in the El Nino years precipitation trend is opposite to the following year,andthe region from East Qinghai to North Shaanxi is most sensitive.  相似文献