Relationship between the Pre-existing Active Kunlun Fault and Co-seismic Surface Ruptures Produced by the 2001 Mw 7．8 Central Kunlun Earthquake，China     

LIN Ai-ming 《地球科学进展》2004,19(3):368-372

Field investigations allow to constrain the co-seismic surface rupture zone of ～400km with a strike-slip up to 16．3 m associated with the 2001Mw 7．8 Central Kunlun earthquake that occurred along the western segment of the Kunlun fault,northern Tibet．The co-seismic rupture structures are almost duplicated on the pre-existing fault traces of the Kunlun fault．The deformational characteristics of the co-seismic surface ruptures reveal that the earthquake had a nearly pure strike-slip mechanism．Theg eologic and topographice vidence clearly shows that spatial distributions of the co-seismic surface ruptures are re-stricted by the pre-existing geological structures of the Kunlun fault．  相似文献   

CMIP6HighResMIP对青藏高原气候模拟的评估和预估          下载免费PDF全文

杨珂珂  郭东林  华维  马迪  辛羽婷 《大气科学学报》2023,46(2):193-204

高分辨率模式模拟被认为是研究资料相对欠缺的青藏高原地区气候变化的重要方法之一。第六次国际耦合模式比较计划(CMIP6)新增了高分辨率模式比较计划(HighResMIP),但其对青藏高原气候的模拟性能尚未系统评估。本研究分析了6对(更高、较低分辨率)CMIP6 HighResMIP模式对青藏高原当前气候的模拟能力,并集合预估了近期青藏高原气候的变化趋势。相对较粗分辨率模拟,所有(2/3)模式的更高分辨率模拟减少了平均降水(气温)的区域平均偏差。泰勒图涉及指标的综合评估显示,约1/3模式的更高分辨率对平均气温和降水模拟效果优于较低分辨率,其余模式的更高分辨率则接近或者劣于较低分辨率。集合平均结果优于单个模式,且其更高分辨率模拟效果总体优于较低分辨率。更高分辨率模式集合预估显示,相对于1995—2014年,在SSP5-8.5情景下到2021—2040年青藏高原整体呈增温趋势,东南部增温相对较弱;降水从北到南呈增加-减少-增加的变化模态;青藏高原气温将平均增加(0.81±0.91) ℃,降水将平均增加(0.05±0.25) mm/d。  相似文献   

前言     

主编副主编简介- 《《地质学报》英文版》2017,91(4)

  相似文献   

南亚高压活动特征及其与我国东部夏季降水的关系   总被引：15，自引：4，他引：11       下载免费PDF全文

胡景高-  陶丽  周兵 《高原气象》2010,29(1):128-136

利用1979—2007年NCEP/DOE2再分析资料,结合国家气象信息中心提供的595个测站逐日降水资料,分析了近30年平均的南亚高压脊线的纬度位置和东脊点的经度位置的逐日变化特征及其变化与我国东部夏季降水异常的联系。结果表明,南亚高压脊线北进过程中在5月第3候存在突变,其发生时间平均提前于南海夏季风爆发1候;同时南亚高压脊线在向北推进过程中于4月下旬出现稍南撤现象;4月后期到6月初高压脊线中段比其东段的脊线位置要偏北,北进更早,8月中期以后高压脊线中段又比其东段位置偏南。6月中旬到7月初是南亚高压东进最明显的阶段,高压东脊点存在时间尺度为一周的周期振荡。相关分析结果显示,对华南地区和江淮流域的夏季降水,南亚高压东脊点东西位置更能作为高压特征参数表征南亚高压,而对黄河下游地区的夏季降水,高压脊线更具有代表性。由合成分析可以看到,南亚高压东脊点偏东(西)年,高压强度增强(减弱),江淮流域、东北部分地区偏涝(旱),华南地区偏旱(涝)。  相似文献   

-89G634.41H130;F085;17;46;F;H;F085_17;H130     

_  邹丽红  -中考阅读理解题解题技巧王 《吉林大学学报(地球科学版)》2007,(4)

试评价是英语新课程的重要组成部分,是实现新课程标准的重要保证。作为评价的试卷应该难度适中,充分体现教育、教学目标,并能对教学产生最大的正面导向作用,从而真正体现受测试者的英语水平和能力,准确反映教学情况和教学效果。在此问题上,命题者要从命题的方向、内容、原则与方法等几个方面去研究和把握。0山东师范大学外国语学院学报(基础英语教育)Journal of Basic English Education94-97G634.41H130;F085;17;46;F;H;  相似文献   

Mineralogical characteristics of airborne particles collected in Beijing during a severe Asian dust storm period in spring 2002   总被引：3，自引：0，他引：3  

SHAO LongYi    LI WeiJun    YANG ShuShen    SHI ZongBo & L SenLin  The State Key Laboratory of Coal Resources  Safety Mining  China University of Mining  Technology  Beijing  China  Department of Resources  Earth Sciences  China University of Mining  Technology  Beijing  China  Faculty of Environmental  Symbiotic Sciences  Prefectural University of Kumamoto  Kumamoto -  Japan 《中国科学D辑(英文版)》2007,50(6):953-959

Asian dust storm (ADS) samples were collected on March 20,2002 in Beijing,China. High-resolution field emission scanning electron microscopy with energy dispersive X-ray detector (FESEM-EDX) and X-ray diffraction (XRD) were used to study the morphology,chemical compositions,number-size dis-tributions and mineralogical compositions of ADS particles. The mineral particles were major compo-nents in the ADS samples,accounting for 94% by number. The XRD analysis indicated that the dust particles were dominated by clay (40.3%),and quartz (19.5%),followed by plagioclase (8.4%),calcite (7.5%),K-feldspar (1.5%),hematite (0.9%),pyrite (0.9%),hornblende (0.4%) and gypsum (0.3%),with a certain amount of noncrystalline materials (20.3%). Clay minerals were mainly illite/smectite mixed lay-ers (78%),followed by illite (9%),kaolinite (6%),and chlorite (7%). In addition to these main minerals,FESEM-EDX also detected some trace minerals,such as dolomite,pyrite,thenardite,as well as heavy minerals represented by rutile,ilmenite and apatite. The mineralogical compositions of the 2002-03-20 Asian dust storm and the Saharan dust plumes were similar but the clay mineralogy showed a great distinction,with the illite/smectite mixed layers being common in the Asian dust storm but illite being common in the Saharan dust plumes.  相似文献   

THE DICHOTOMY OF ACTUAL TORRENT CATCHMENTS: IS THERE AN ALPINE DISEASE?     

Peter ERGENZINGER  Carmen de JONG Freie Universitat Berlin Institut fur Geographische Wissenschaften Malteserstr. - Berlin / Germany  perg@geop.fu-berlin.de  cdjong@geog.fu-berlin.de 《国际泥沙研究》2001,16(2)

1 INTRODUCTIONDuring the last glaciation all large valleys along the northem tringe of the Bavarian Alps wereintensively influenced by the movement of huge glacial lobes into the forelands. During the glacialadvance of the combined Isar and Loisach glaciers in the Lainbach test basin, sitUated 6() kIn south ofMunich, the eastom rim of the geomorphological basin of Kochel was covered by a small secondare icelobe. In the KOchel basin the IsarLosach glacier developed to a maximum thickn…  相似文献   

Grade-Tonnage, Ore Value-Tonnage, and Enrichment Ratio-Tonnage Models for Resource Assessment     

Shoji Tetsuya Department of Environment Systems  The University of Tokyo  Tokyo -  Japan 《中国地质大学学报(英文版)》2001,12(1)

I' Grade-tonnage diagrams are one of the most useful tools inthe resource assessment (e. g. St'nger, 1993). One' grade-tonnage diagram is well known as Laskys (1950) e\-7ation, whichdemonstrates the linear relation between average grade (x) andlOgarithms of cumulative ore tonnage (ac above a given gradex(0相似文献   

新书介绍     

史培军宫鹏李晓兵等著的《土地利用/覆盖变化研究的方法与实践》由科学出版社年月出版。书中介绍了该领域的研究进展区域土地利用/覆盖测量技术体系基于NOAA/AVHRR数据的中国植被分类及其变化的区域分异规律  并结合实践  对区域土地利用/覆盖变化过程进行了模拟  分析了其对环境与灾害的影响机制。　　刘会远郑天祥韩彪等著的《澳门与中国的对外开放》由河海大学出版社年月出版。全书在经济全球化大趋势背景下分析澳门作为窗口和桥头堡的功能  并分析了澳门与珠海的经济合作及与珠江-南昆线经济带发展的联系 《地理学报》2001,56(1):53

  相似文献   

THE USE OF A RATIO METHOD AS AN ALTERNATIVE TO CONSTRAINED DECONVOLUTION     

PAUL BENJAMIN CRIEEY The University of Tennessee Knoxville  Department of Electrical  Computer Engineering  Ferris Hall  Knoxville  TN -  U.S.A. 《地理学报(英文版)》1991,(2)

This paper will consider the use of an iterative ratio technique called Gold's ratio method as an alternativeto iterative constrained deconvolution methods for the restoration of overlapped and noisychromatograpic peaks.The study will consist of first describing the technique and then evaluating itsperformance with respect to Jansson's deconvolution procedure.A Hewlett-Packard 5890A gaschromatograph will be used to generate most of the test data.The evaluation criteria will includeconvergence rates,peak area errors and variances,retention time variances and noise performance.  相似文献