基于WebGIS的城市财产保险洪灾损失评估研究     

李喆  秦其明  赵军  王林 《地理信息世界》2003,1(6):37-39

WebGIS是Internet技术与GIS技术相结合的产物。本项研究在WebGIS支持下,从洪涝灾害的成灾机理出发,针对保险公司对具体受灾体理赔的需求,提出了每个投保户洪灾损失率的计算方法,建立起基于WebGIS的城市财产保险洪涝灾害损失评估模型。结合广东省深圳城市洪灾数据进行模型验证。验证结果表明,WebGIS可以快速方便地进行投保户洪涝灾害损失评估,并对于各个投保户均能得到较好的精度。  相似文献   

偏振雷达观测强对流雹暴云   总被引：13，自引：0，他引：13  

张鸿发  郄秀书  王致君  张义军 《大气科学》2001,25(1):38-48

根据偏振雷达原理,用C波段双线偏振天气雷达观测得到4例强对流雹暴演变过程的水平反射率ZH(dBZ)和差分反射率ZDR(dB)垂直剖面RHI定量回波资料,分析了这些雹云不同演变阶段的回波参量和偏振特性的关系,说明ZH、ZDR双参量对判别降雹有着明显优势,用雨滴谱的ZH-ZDR分布边界关系对这些雹云回波进行判别降雹分析,给出我国用偏振雷达观测和识别冰雹的研究结果。  相似文献   

哈巴河县赛都金矿成矿特征探讨   总被引：11，自引：0，他引：11  

程忠富  芮行健 《新疆地质》1996,(3)

新疆赛都金矿是属于阿尔泰地区新发现的重要金矿类型──蚀变糜棱岩型金矿。其成矿物质金主要来源于地层岩石和岩浆岩，赋矿主岩为中下泥盆统托克萨雷组的杂砂岩建造。金矿床严格受剪切构造带的控制，金矿体一般赋存于韧—脆性构造和构造扩容带中。金矿的主成矿时代为３００Ｍａ，金矿体与海西期哈巴河斜长花岗岩体存在着密切的空间—时间联系。  相似文献   

西南地区等变质煤煤岩煤质差异性研究     

肖文钊  叶道敏 《煤田地质与勘探》1996,24(5):15-18

通过对西南地区古生代受海影响煤和陆相煤以及中生代陆相煤３个系列煤样的对比研究，探讨了西南地区煤岩及碳、氢、氧、氮等元素的含量特征；首次提出了只要煤化程度恰当，中生代煤的粘结性并不比古生代弱的观点  相似文献   

营山构造断层的封堵性研究   总被引：5，自引：0，他引：5  

包强 《矿物岩石》1997,17(1):85-89

本文根据营山构造上三叠统断层的发育特征，采用分析断层的断面压力分布特征和绘制断层面剖面图的方法，对主要断层的封堵性进行探讨。进而判断断层的流体溢出点，确定断层能封闭流体的有效范围，为下一步营山构造天然气的勘探提供依据  相似文献   

冀东某地原生红刚玉矿床矿物学特征     

王宝德  王礼胜  陈秀玉  王怀宝 《内蒙古地质》2001,(2)

河北省刚玉矿床（点）较多，但迄今还未发现宝石级工业矿床。冀东某地原生刚玉矿床具有埋藏浅、刚玉个体大、微红至暗红色、半透明至不透明等特点，经人工改善可生产低档红宝石。本文主要介绍该矿床的刚玉形态特征、物理性质、晶体结构、包裹体特征及矿床形成的地质条件，以期为该类矿产的开发利用提供部分基础性资料。  相似文献   

MDS—Φ215取心工具研制报告     

王忠勤 《中国煤田地质》2001,13(4):55-57,59

详细介绍了取心工具的构造、特点及其主要技术规格与技术参数。  相似文献   

VB中串行通信控件的设置与应用   总被引：1，自引：1，他引：1  

何月顺  汤彬 《华东地质学院学报》2001,24(1):79-81

主要介绍了利用MSComm控件进行通信时串行口的打开与关闭，缓冲区的设置和数据的收发形式，同时也介绍了握手协议和通讯时错误信号的捕获。  相似文献   

Preliminary Study on Loess Slumping Hazard between Northern Shaanxi and Western Shanxi along the Line of West-East Gas Transportation Project     

Liu Guolin North China Institute of Science  Technology  Beijing Hu Shaoxiang Shandong University of Science  Technology  Tai''''an Lei Weizhi Zhang Yongshuang Institute of Geomechanics  Chinese Academy of Geological Sciences  Beijing 《中国地质大学学报(英文版)》2003,14(2):155-160

INTRODUCTIONTheloess,widelydistributedinthenorthwestplateauofChina ,hasatalltimesbeenanimportantresearchsubjectofthestudiesonengineeringgeology.Duetotheunfavorableengineeringpropertiesofloess,aswellasthespecialtopog raphyandclimate ,thenorthwestloessplateauisaregionwithfrequentgeologicalhazardsandcomplicatedgeologicalengineeringproblems.Inthepast,mostoftheresearchersconsideredthelandslideasthemainandseriousformoffail ureoftheloessslopes,soloesslandslidesweregivenmoreattention (DuanandLuo…  相似文献   

Magnetic properties of the Tertiary red clay from Gansu Province, China and its paleoclimatic significance     

Liu Xiuming  AN Zhisheng  Tim Rolph  QIANG Xiaoke  Paul Hesse  Lu Huayu  ZHOU Jie  CAI Yanjun 《中国科学D辑(英文版)》2001,44(7)

The study on magnetic properties of the red clay indicates that the red clay and loess- paleosol sequence have a common magnetic mineralogy, with magnetite, maghemite, hematite (and possibly goethite) contributing to the magnetic behavior. The red clay magnetic susceptibility is also found to have a positive relation with extrafine superparamagnetic grains. This suggests that, like the Quaternary loess-paleosols, an ultrafine ferrimagnetic component produced during pe-dogenesis in the red clay under humid conditions also plays an important role in susceptibility enhancement in the soil units. This is supported by the correlation between Rb/Sr ratio and magnetic susceptibility. This signifies that, like the above loess-paleosol sequence, the magnetic susceptibility of the red clay can be used as a general proxy paleoclimatic indicator, although whether its susceptibility in the red clay is comparable to pedogenesis intensity and requires further investigation. Magnetic susceptibility variation in the red clay thus also provides an eo-lian/pedogenic record of paleoclimatic evolution. Study of the background susceptibility indicates that, on average, the absolute scale of the paleoclimatic shift from red clay development to Quaternary loess deposition is similar to the climatic shift from stage 5 (S1) to stage 2-4 (L1). This may suggest that during the Quaternary there is an evident strengthening of the absolute wind intensity to bring more (about double) coarser and less weathered (non-SP fraction) eolian magnetic input from the source regions to the Loess Plateau than during the Pliocene. The presence of eolian red clay since 7.5 Ma BP in central-northern China implies an important envi-ronmental change from the underlying Cretaceous red sandstone. The red clay development was closely related to global drying and climate cooling since the Cretaceous and closely associated with the abrupt uplift of the Qinghai-Xizang Plateau at about that time. This uplift of the plateau intensified the East Asia monsoon system and started red clay deposition.  相似文献