首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   25篇
  免费   1篇
  国内免费   15篇
大气科学   11篇
地球物理   9篇
地质学   9篇
海洋学   4篇
天文学   5篇
自然地理   3篇
  2023年   1篇
  2022年   1篇
  2019年   1篇
  2018年   1篇
  2016年   1篇
  2015年   2篇
  2014年   1篇
  2011年   1篇
  2007年   2篇
  2001年   3篇
  2000年   5篇
  1999年   4篇
  1998年   3篇
  1997年   6篇
  1996年   5篇
  1995年   2篇
  1994年   1篇
  1988年   1篇
排序方式: 共有41条查询结果,搜索用时 15 毫秒
31.
CHARACTERISTICS AND METALLOGENIC EVOLUTION OF AILAOSHAN GOLD METALLOGENIC BELTS IN YUNNAN, CHINANNSFC(973Hi techProjects)andProjectofYunnanProvince ChineseAcademyofSciencescorporation(YK980 0 8 3)  相似文献   
32.
汤Bi 《贵州气象》1999,23(3):23-25
采用贵州省46个长记录站1951-1994年凝冻资料全省凝冻情况进行分析,并通过基于生函数的逐步回归分析建立多步预测模型,对1997-1999年冬季凝冻强度指数进行预测。  相似文献   
33.
The sedimentary record of climate change in the Arctic region is useful for understanding global warming.Kongsfjord is located in the subpolar region of the Arctic and is a suitable site for studying climate change.Glacier retreat is occurring in this region due to climate change,leading to an increase in meltwater outflow with a high debris content.In August 2017,we collected a sediment Core Z3 from the central fjord near the Yellow River Station.Then,we used the widely used chronology method o...  相似文献   
34.
1.Objectives Changshan Islands are located on the geographical boundary between the Bohai Sea and the North Yellow Sea,China.Intensively tectonic deformation developed in this area,which is an important connection point to study the tectonics of the Shandong Peninsula and Liaoning Peninsula.Previous studies have shown that the lithologies of the three northern islands(Beihuangcheng Island,Nanhuangcheng Island,and Xiaoqin Island)of the Changshan Islands include Neoproterozoic quartzite,phyllite,and slate(Fuzikuang Formation of the Penglai Group),and a few areas are covered by Quaternary slope deposits,marine deposits and loess(Fig.1 a;Qiao EW et al.,2019).Recently,a set of volcanic rocks was firstly discovered in Nanhuangcheng Island(Fig.1 a).  相似文献   
35.
本文就地震预报中常用的分形几何中的几个数学概念做了简要的介绍,包括测度,豪斯道夫维数、计盒维数等,并介绍了有关维数的性质和估计方法。作者试图通过了这些数学概念的简要介绍,使读者对分维有更准确的理解。  相似文献   
36.
TheAfricanClimateasPredictedbytheIAPGrid-PointNine-LayerAtmosphericGeneralCirculationModel(IAP-9L-AGCM)ChinekeTheoChidiezie①,...  相似文献   
37.
The Interannual Variability and Predictability in a Global Climate Model   总被引:13,自引:0,他引:13  
TheInterannualVariabilityandPredictabilityinaGlobalClimateModel①WangHuijun(王会军),XueFeng(薛峰)andBiXunqiang(毕训强)LASG,Instituteof...  相似文献   
38.
By using IAP 9L AGCM, two sets of long-term climatological integration have been per-formed with the two different interpolation procedures for generating the daily surface boundary conditions. One interpolation procedure is the so-called “traditional” scheme, for which the daily surface boundary conditions are obtained by linearly interpolating between the observed monthly mean values, however the observed monthly means cannot be preserved after interpolation. The other one is the “new” scheme, for which the daily surface boundary conditions are obtained by linearly interpolating between the "artificial" monthly mean values which are based on, but are dif-ferent from the observed ones, after interpolating with this new scheme, not only the observed monthly mean values are preserved, the time series of the new generated daily values is also more consistent with the observation. Comparison of the model results shows that the differences of the globally or zonally averaged fields between these two integrations are quite small, and this is due to the compensating effect between the different regions. However, the differences of the two patterns (the global or regional geographical distributions), are quite significant, for example, the magni-tude of the difference in the JJA mean rainfall between these two integrations can exceed 2 mm/day over Asian monsoon regions, and the difference in DJF mean surface air temperature can also exceed 2oC over this region. The fact that the model climatology depends quite strongly on the method of prescribing the daily surface boundary conditions suggests that in order to validate the climate model or to predict the short-term climate anomalies, either the " new* interpolation scheme or the high frequency surface boundary conditions (e.g., daily or weekly data instead of the monthly data) should be introduced. Meanwhile, as for the coupled model, the daily coupling scheme between the different component cli?mate models (e.g., atmospheric and oceanic general circulation models) is preferred in order to partly eliminate the “climate drift” problem which may appear during the course of direct coupling.  相似文献   
39.
利用IAP九层大气环流模式模拟全球季风系统   总被引:11,自引:0,他引:11  
用IAP九层大气环流模式模拟了全球季风系统。结果表明,模式成功模拟出对流层低层的季风系统,包括经典的热季风以及副热带季风和温寒带季风。此外,模式也真实再现了对流层高层的行星季风。另一方面,平流层季风的模拟效果则较差,这与模式中西风系统性偏强有关。  相似文献   
40.
1 IntroductionThemagneticfieldandmaterialmotionhavealwaysbeenthepointstowhichcloseatteneionispaidinthestudyofsolarflareprocess.Especiallythetwistingenergystorgeprocessisaprob lemthatauthorsofmanyflaretheoriesandmodelshopetoresolve .Gold&Holye ( 1 96 0 ) pres…  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号