张家口断裂发现第四纪晚期活动证据   总被引：4，自引：3，他引：1  

尤惠川  邵翠茹  杨歧焱  周江林  周月玲 《震灾防御技术》2008,3(4):474-477

作者等人在“河北省城市活断层探测与地震危险性评价（张家口项目）”2008年探测工作中对张家口断裂进行了地质调查,多处发现了清楚的第四纪晚期（晚更新世-全新世）断层活动剖面,获得了张家口断裂晚第四纪活动的可靠证据,为张家口市活断层探测打下了坚实基础。  相似文献   

DEEP SEISMIC SOUNDING EVIDENCE FOR TECTONIC INTERACTION BETWEEN TARIM AND WEST KUNLUN MT     

Li Qiusheng  Lu Deyuan  Gao Rui  Li Jingwei  Fan Jingyi  Zhang Zhiying  Liu wen 《地学前缘》2000,(Z1)

DEEP SEISMIC SOUNDING EVIDENCE FOR TECTONIC INTERACTION BETWEEN TARIM AND WEST KUNLUN MT1　MatteP ,TapponnierP ,ArnaudN ,etal.TectonicofWesternTibet,betweentheTarimandtheIndus[J] .EarthPlanetSciLett,1996 ,14 2 :311～ 330 2　GaoRui,LiDexing,LuDeyuan ,etal.DeepseismicreflectionprofileacrosscontactzoneofwestKunlunandTarimalongtheXinjianggeotransectinNWChina[C] .14 thHKTworkshop ,1999.4 9～ 50 .…  相似文献   

基于模糊预测对象的证据权方法及其在土地沙漠化评价中的应用   总被引：3，自引：3，他引：0  

张生元  武强  成秋明  葛咏 《地球科学》2006,31(3):389-393

为了使在地理信息系统中被广泛用于点事件预测的证据权方法能对面事件进行评价和预测, 提出了一种新的基于模糊训练层的证据权方法.它是一种更广泛的证据权方法, 与普通证据权方法所不同的是, 它的训练层是模糊集合, 其取值是它的隶属度.通过适当的变换也可以把点训练层转换为模糊集合.因此, 该方法可以对面事件、点事件和线事件进行评价和预测.该方法可以处理训练层和证据层均为模糊集合的情况, 被称为双重模糊证据权方法.作为该方法的一个应用实例, 本文介绍毛乌素沙漠边缘的晋陕蒙地区土地沙漠化评价的应用实例.   相似文献   

BOOK REVIEWS     

《The Professional geographer》1986,38(1):105-130

Book Reviewed in this article: Unfairly Structured Cities . Blair Badcock Religion and Rural Revolt . Janos M. Bak and Gerhard Benecke The Industrial Geography of Canada . Anthony Blackbourn and Robert G. Putnam The Cuban-American Experience, Culture, Images, and Perspectives. Thomas D. Boswell and James R. Curtis Quaternary Paleoclimatology . R. S. Bradley Development and Crisis in Brazil, 1930–1983 . Luiz Bresser Pereiras Centres of Origin in Biogeography . John C. Briggs Analytical Urban Geography . Martin Cadwallader Geomorphology . Richard J. Chorley , Stanley A. Schumm, and David E. Sugden South Africa: The Impact of Past Geographies . A. J. Christopher The Geography of Underdevelopment. A Critical Survey . D. K. Forbes Health Care in Developing Countries . Wilbert M. Gesler Place to Grow Old: The Meaning of Environment in Old Age . Stephen M. Golant The Emerging Marine Economy of the Pacific . Chennat Gopalakrishnan An Introduction to Agricultural Geography . David B. Grigg The Soviet Union: A Geographical Study . G. Melvyn Howe Geographical Aspects of Health: Essays in Honour of Andrew Learmonth . N. D. Mc Glashan and J. R. Blunden Physical Geography: A Landscape Appreciation . Tom L. Mc Knight Mountain Experience. The Psychology and Sociology of Adventure. Richard G. Mitchell Jr . Systematic and Regional Biogeography. Stanley A. Morain The Economic Transformation of American Cities. T. J. Noyelle and T. M. Stanback , Jr . Normal Accidents: Living With High-Risk Technologies. Charles Perrow Vanishing Farmland: A Legal Solution for the States. Sarah E. Redfield Applied Methods of Regional Analysis: The Spatial Dimensions of Development Policy. Dennis A. Rondinelli Urbanization in Romania. A Geography of Social and Economic Change Since Independence. Per Ronnas Statistical Techniques in Geographical Analysis. Gareth Shaw and Dennis Wheeler The Granite Garden: Urban Nature and Human Design. Anne Whiston Spirn Political Geography: Recent Advances and Future Directions. Peter Taylor and John House Geographia y Medio Ambiente. Manuel Valenzuela -Rubío Nãgara and Commandery: Origins of the Southeast Asian Urban Traditions. Paul Wheatley The Common Fisheries Policy of the European Community. Mark Wise Geography and Gender. Women and Geography Study Group of the IBG Technological Hazards. D. J. Zeigler , J. H. Johnson , S. D. Brunn  相似文献   

证据权重法在张家口地区铅锌银富集区定量评价中的应用     

李随民  姚书振  韩玉丑  郝华金  陈树清 《矿床地质》2008,27(5):647-654

文章以张家口铅锌银多金属富集区为例,在前人研究的基础上,运用GIS平台提取了与成矿关系密切的赋矿层位、岩体5km缓冲区、深大断裂3km和次级断裂1km的复合缓冲区及化探、物探异常等证据图层,选用证据权重法模型对研究区进行了成矿远景区分析和评价,取得了较好效果,并讨论了预测过程中信息提取时应注意的问题。  相似文献   

基于GIS证据权重法的白银厂矿区及小外围的成矿预测          下载免费PDF全文

李培  廖时理 《地质找矿论丛》2016,31(1):36-41

文章利用Morpas软件对甘肃省白银厂矿区内的地、物、化等多源信息进行统计分析,提取了成矿有利信息,认为成矿有利地层为石英角斑凝灰岩系,成矿有利构造为火山机构及背斜构造,成矿有利岩体为石英钠长斑岩岩体。采用证据权重法对研究区圈定了成矿预测和找矿远景区,并指出了找矿方向。  相似文献   

A Combined Weight of Evidence and Logistic Regression Method for Susceptibility Mapping of Earthquake-induced Landslides: A Case Study of the April 20, 2013 Lushan Earthquake,China     

ZHOU Suhu  WANG Wei  CHEN Guangqi  LIU Baochen  FANG Ligang 《《地质学报》英文版》2016,90(2):511-524

The Ms 7.0 Lushan earthquake triggered a huge number of landslides. Landslide susceptibility mapping is of great importance. Weight of Evidence (WoE) and Logistic Regression (LR) methods have been widely used for LSM (Landslide Susceptibility Mapping). However, limitations still exist. WoE is capable of assessing the influence of different classes of each factor, but neglects the correlation between factors. LR is able to analyze the relationship among the factors while it is not capable of evaluating the influence of different classes. This paper proposes a combined method of LR and WoE for LSM, taking advantage of their individual merits and overcoming their limitations. An inventory of 1289 landslides was used: 70% were random-selected for training and the remaining for validation. 11 landslide condition factors were employed in the model and the result was validated using Receiver Operating Characteristic (ROC) curve. The results showed that the LR-WoE model had a better accuracy than the LR model, producing an area below the curve with values of 0.802 success and 0.791 predictive, higher than that of the LR model (0.715 success and 0.722 predictive). It is therefore concluded that the combined method of WoE and LR can provide a promising level of accuracy for earthquake-induced landslide susceptibility mapping.  相似文献   

A WOE method for urban growth boundary delineation and its applications to land use planning     

Xin-qi Zheng  Li-na Lv 《International journal of geographical information science》2016,30(4):691-707

The aim of this study is to develop a new approach for delineating urban growth boundaries (UGBs) by applying the weight of evidence (WOE) method to land suitability assessments. Rapid urbanization is causing urban areas to encroach on agricultural land in China, posing a threat to national food security. Land use planning with clear delineation of UGBs is an effective method for controlling urban expansion. However, existing methods for delineating UGBs are typically complex or involve arbitrary decision-making. To address these drawbacks, we introduced the WOE method to develop a new UGB delineation approach, and applied this approach to a case study in the city of Jinan, China. This application achieved satisfactory accuracy; therefore, we concluded that the WOE method was an objective and effective approach to land use suitability assessments and UGB delineation. Land use planning could be benefitted considerably from the application of this method to land allocation and other planning decisions.  相似文献   

多特征融合的高分辨率影像建筑物变化检测     

李军胜  党建武  王阳萍 《测绘通报》2019,(10):105-108,118

为充分发挥遥感影像中各特征的优势，提高遥感影像建筑物变化检测精度，基于面向对象的分析方法，提出了一种基于模糊集合的证据理论特征信息融合的变化检测方法。首先，在影像分割的基础上，利用变化矢量分析法分别计算前后时相对应对象的光谱、纹理特征差异及形态学建筑物指数差异；然后，以Sigmoid函数作为隶属度函数，计算对象属于变化类和非变化类的隶属度并以之构建证据理论所需的基本概率分配函数；最后，利用证据理论对多种特征进行融合并通过规则判定得到建筑物变化区域。利用不同地区影像的试验结果表明，该方法能够有效融合影像的多种特征，提高建筑物变化检测的精度。  相似文献   

Climate-induced boreal forest change: Predictions versus current observations   总被引：4，自引：0，他引：4  

Amber J. Soja  Nadezda M. Tchebakova  Nancy H.F. French  Michael D. Flannigan  Herman H. Shugart  Brian J. Stocks  Anatoly I. Sukhinin  E.I. Parfenova  F. Stuart Chapin III  Paul W. Stackhouse  Jr. 《Global and Planetary Change》2007,56(3-4):274

For about three decades, there have been many predictions of the potential ecological response in boreal regions to the currently warmer conditions. In essence, a widespread, naturally occurring experiment has been conducted over time. In this paper, we describe previously modeled predictions of ecological change in boreal Alaska, Canada and Russia, and then we investigate potential evidence of current climate-induced change. For instance, ecological models have suggested that warming will induce the northern and upslope migration of the treeline and an alteration in the current mosaic structure of boreal forests. We present evidence of the migration of keystone ecosystems in the upland and lowland treeline of mountainous regions across southern Siberia. Ecological models have also predicted a moisture-stress-related dieback in white spruce trees in Alaska, and current investigations show that as temperatures increase, white spruce tree growth is declining. Additionally, it was suggested that increases in infestation and wildfire disturbance would be catalysts that precipitate the alteration of the current mosaic forest composition. In Siberia, 7 of the last 9 yr have resulted in extreme fire seasons, and extreme fire years have also been more frequent in both Alaska and Canada. In addition, Alaska has experienced extreme and geographically expansive multi-year outbreaks of the spruce beetle, which had been previously limited by the cold, moist environment. We suggest that there is substantial evidence throughout the circumboreal region to conclude that the biosphere within the boreal terrestrial environment has already responded to the transient effects of climate change. Additionally, temperature increases and warming-induced change are progressing faster than had been predicted in some regions, suggesting a potential non-linear rapid response to changes in climate, as opposed to the predicted slow linear response to climate change.  相似文献