Testing the line-driven disc wind model: time-resolved ultraviolet spectroscopy of IX Vel and V3885 Sgr     

L. E. Hartley  J. E. Drew  K. S. Long  C. Knigge  D. Proga 《Monthly notices of the Royal Astronomical Society》2002,332(1):127-143

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THE CORRESPONDING ANALYSIS OF HEAVY-METAL POLLUTION OF SOIL IN ZHUZHOU CITY   总被引：1，自引：0，他引：1  

尚金城  龙爱民  李斌  姜建祥 《中国地理科学(英文版)》1996,6(2):177-184

ＴＨＥ ＣＯＲＲＥＳＰＯＮＤＩＮＧ ＡＮＡＬＹＳＩＳ ＯＦ ＨＥＡＶＹ－ＭＥＴＡＬ ＰＯＬＬＵＴＩＯＮ ＯＦ ＳＯＩＬ ＩＮ ＺＨＵＺＨＯＵ ＣＩＴＹ ＳｈａｎｇＪｉｎｃｈｅｎｇ（尚金城）；ＬｏｎｇＡｉｍｉｎ（龙爱民）ＬｉＢｉｎ（李斌）；ＪｉａｎｇＪ...  相似文献   

常德1631年大震事件的多场点群发式构造模型     

甘家思  刘锁旺  申重阳 《大地测量与地球动力学》1993,(4)

根据对常德1631年地震事件的史料鉴别,尤其是江陵为典型七度震害这一事实,运用震声传播方向和地光物理场以及地震烈度衰减关系,拟合推断此地震事件的序列主要由安乡北6 3/4级地震、常德北太阳山7级地震、澧县6级地震、大庸6级地震和澧县—安乡6 1/2级地震组成,相应的地震地质背景是江汉—洞庭地区晚更新世以来的剩余形变呈四象限分布。若考虑地震-构造相关分布为“Z”字型,则该地震事件的主控构造——太阳山断裂带东断裂具左旋走滑的力学机制。根据区域地震—构造相关发展过程,常德大震事件可视为1668年郯城8 1/2级地震的前震序列组成部分。  相似文献   

现代传感器技术进展     

陈金岭  沈镇芳  王保强 《成都信息工程学院学报》1993,(3)

本文扼要地介绍了世界各国生产、开发敏感器技术的进展情况;并指出现代传感器技术正朝着仿生代、量子化、集成化和智能化方向发展。  相似文献   

VELOCITIES OF PRECURSOR SOLITON GENERATION IN SINGLE LAYER FLOW   总被引：3，自引：0，他引：3  

徐肇廷  史峰岩  楼顺里 《中国海洋湖沼学报》1997,15(2):130-136

ImODUcrIONThegeneratingveodtyofprecmeorsolitonswasstudiedbyGrimshawetal.(l986),Wu(l987)andbeetal.(1989).TheydidnotgivetherelationbeweenthegeneratingvelocitiesandtopographyintenSityandthereexistSanunknownparameterh,inthetheoryofboetal.(l989),sotheprevioustheorycannotprediCtthegeneratingvelodtAs.ThisfurtherstudyonthetheoryofXuetal.(l996)ahetoconstIUCtatheoryonthegeneratingvefodtiesofsinglelayerflowfondbytopography.InSeCtion2,thernassandenergyoftheprecursorsolitongenerationaredetendnedint…  相似文献   

Water temperature and conductivity variability as indicators of groundwater behaviour in complex aquifer systems in the south‐east of Spain     

L. Molina  A. Vallejos  A. Pulido‐Bosch  F. Snchez‐Martos 《水文研究》2002,16(17):3365-3378

Groundwater temperature and electrical conductivity logs were applied in this study to gain an understanding of the hydrogeological behaviour of a complex system. This system, compartmentalized by a large number of fractures, which may even cause geothermal anomalies, is that of the Campo de Dalías in the south‐east of the Iberian Peninsula. In addition to this complexity one must consider the different levels with aquifer properties and their varying lithologies, which in some cases are in direct contact with the sea. Vertical sections based upon the various logs allow lateral correlation to be made between the anomalies detected, and provide information on the existence of both ascending and descending vertical flows, and the inflow of sea water into the system. Analysis of environmental isotopes (¹⁸O and D) indicate the areas of recharge with the greatest flow velocity. No seasonal variation in the isotopes was observed, which suggests that the residence time of the groundwater in the aquifer is several years. Radiocarbon dating gave estimates of generally long residence times, although in some sectors it is possible to detect the current recharge based on its tritium content, from rainwater infiltration or seawater intrusion. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   

A 3600 years paleoclimatic change inferred from organic δ13C and TOC/TN of the Gucheng Lake sediments, southeast China     

Shen Ji  Ryo Matsumoto  Wang Su-min 《中国海洋湖沼学报》1997,15(3):279-284

A 6.2 m thick core of Gucheng Lake sediment provided a 3600 years record of climate change. The contents of the TOC in the core changed from 2.63% to 8.48%, and the δ¹³C values of organic matter were from −21.54% to −27.3%. The TOC/TN ratios indicated that the organic materials in sediments were from lake plankton and land-derived plants. The 2.9–22 m core interval with high TOC/TN ratios, low δ¹³C values and low contents of TOC indicated a cold climate stage. The 6.2–5.5 m and 0.4–0.1 m intervals were characterized by low TOC/TN ratios, high δ¹³C values and high contents of TOC, and reflected temperate climate stages. Project 49372129 supported by NSFC.  相似文献   

阿尔泰南缘地球物理场特征与矿床分布规律     

王隆平  温佩琳 《地球科学与环境学报》2001,23(3):46-49

通过对新疆阿尔泰南缘地球物理场特征-深部构造-已知大型矿床分布规律的系统研究,认为该地区不同属性的地质块体受3组基底构造控制,即EW向、NE向和NW向3组基底构造系,并认为该地区已知大型-超大型矿床同样受这3组深部构造系的控制.最后对阿尔泰地区进行了大型、超大型多金属矿床成矿预测.  相似文献   

空间无碰撞激波的数值研究   总被引：2，自引：0，他引：2  

王水  陆全明 《天文学进展》1997,15(3):218-230

无碰撞激波是空间等离子体和宇宙等离子体中的重要物理现象。文中评述了数值研究空间无碰撞激波的两种方法－粒子模拟和混合模拟，给出了准垂直和准平行无碰撞激波的数值研究结果。还指出了一些尚未解决的研究问题。  相似文献   

FUSE observations of V592 Cas: the continuing enigma of orbitally modulated spectral signatures of accretion disc winds     

R. K. Prinja  C. Knigge  D. K. Witherick  K. S. Long  G. Brammer 《Monthly notices of the Royal Astronomical Society》2004,355(1):137-142

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