库车坳陷东部白垩系沉积体系分析及有利油气勘探区带预测   总被引：5，自引：0，他引：5  

严德天  王华  王家豪  王清晨 《地质学报》2006,80(3):382-389

克拉2大气田的发现,展示了库车坳陷白垩系良好的油气勘探潜力。通过对库车坳陷东部野外露头、钻井资料以及地震剖面的综合分析,对坳陷东部白垩系的沉积体系类型及其分布特征进行了系统的研究。结果表明:研究区白垩系发育湖泊体系、扇三角洲体系、辫状河三角洲体系和三角洲体系等四种沉积体系类型;白垩系岩相古地理经历了早、中、晚期的演化,早期发育了以扇三角洲体系为主的沉积环境,中期形成了大范围的浅湖环境,晚期以三角洲平原相环境为特色;平面上,白垩系岩相古地理南北分带明显,具有南北双向提供物源的特征,粗碎屑分布在坳陷较陡的北侧。库车坳陷东部储层主要由三种三角洲体系砂体和滨岸沙坝砂体构成,砂体厚度大,分布广,储集条件好。  相似文献   

中国夏季气候对植被覆盖的影响:1982～2001(英文)     

HABIB Aziz Salim  陈晓玲  龚健雅  张力 《地球空间信息科学学报》2009,(1)

In this paper, we apply lagged correlation analysis to study the effects of vegetation cover on the summer climate in different zones of China, using NOAA/AVHRR normalized difference vegetation index (NDVI) data during the time period from 1982 to 2001 and climate data of 365 meteorological stations across China (precipitation from 1982 to 2001 and temperature from 1982 to 1998). The results show that there are positive correlations between spring NDVI and summer climate (temperature and precipitation) in m...  相似文献   

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焉建国  陈正松  罗志才  李琼 《大地测量与地球动力学》2009,29(5):121-124

????AR?????????????????????????????????????AIC?????AR????????????????????,AR??4?????????????????????AR(4)???????????δ??10???????????????????  相似文献   

珠江口滨海湿地退化现状、原因及保护对策   总被引：1，自引：0，他引：1  

李团结  马玉  王迪  王爱军  周英 《热带海洋学报》2011,(4)

2007年和2008年秋季对珠江口滨海湿地进行了环境现状综合调查,结果表明,珠江口滨海湿地退化主要表现在4个方面:天然湿地面积减少、湿地生产力不断下降、湿地环境状况持续恶化和湿地景观破碎化。珠江口滨海湿地退化的原因主要为滩涂开发与围填海、污染物排放、养殖污染、海平面上升、过度捕捞、海砂开采和港口码头建设以及水土资源开发等因素。滨海湿地保护与利用对策主要有:制定有关滨海湿地保护的法律法规和湿地保护与利用规划;加强人才队伍建设和滨海湿地有关技术研究;建立滨海湿地动态监测体系;加大滨海湿地保护区建设的力度;加强宣传和教育。  相似文献   

Study on Flow Field Around Vertical Breakwater Under Different Overtopping Conditions Based on Numerical Simulation     

蒋学炼  吴米玲  李炎保 《中国海洋工程》2010,(4)

A numerical wave flume is constructed based on the Reynolds Averaged Navier-Stokes (RANS) equations with turbulence closure by a modified k-ε model to study the viscous interactions of waves with vertical breakwaters for different overtopping cases. The governing equations,the turbulence model,boundary conditions,and solution method for the numerical wave flume are introduced briefly. The reliability of the numerical wave flume is examined by comparing the numerical results with the experimental measurement...  相似文献   

Correlation Between Total Lightning Activity and Precipitation Particle Characteristics Observed from 34 Thunderstorms     

ZHENG Dong  MENG Qing  ZHANG Yijun  DAI Jianhu  ZHONG Min 《Acta Meteorologica Sinica》2010,24(6):776-788

A total of 34 thunderstorms around Shanghai and Wuhan of China are analyzed in order to determine the relationship between total lightning activity and precipitation particle characteristics.Precipitation particle concentration data are obtained from the 2A12 product of TRMM/TMI(Tropical Rainfall Measuring Mission/TRMM Microwave Image) and lightning activity data are from the TRMM/LIS(Lightning Imaging Sensor) and SAFIR3000(Surveillance et Alerte Founder par Interferometric Radioelectirque).On a spatial ...  相似文献   

新矿物—彭志忠石的发现及研究     

陈敬中  施倪存 《矿物学报》1989,9(1):20-24

彭志忠石产于湖南安化白钨矿区,是一种富含镁、锡、铝的复杂氧化物。矿物为浅黄褐色、浅黄色,少量无色,晶体呈六方板状。晶体化学式为:(Mg,Zn,Fe,Al)_4(Sn,Fe)_2(Al,□)_(10)O_(22)(OH)_2,空间群P_3ml,a=5.692(5)A,c=13.78(2)A,V=386.7A~3,Z=1。D=4.22(3)g/cm~3,H≥8,一轴正晶,ω=1.802(2),ε=1.814(2)。  相似文献   

米仓山碱性岩中的主要矿物研究及其成因信息   总被引：3，自引：0，他引：3       下载免费PDF全文

许继峰 《岩石矿物学杂志》1993,12(3):269-278

米仓山碱性岩中的主要矿物为富铝的(次硅)铝铁质透辉石、钙质角闪石、霞石等,且大量出现霞石,但无或极少有碱性暗色矿物。研究表明:氧逸度低是碱性岩浆不能结晶出碱性暗色矿物的原因。本区这种无碱性暗色矿物的碱性岩是在封闭体系及深成条件下结晶的,而其它地区含有碱性暗色矿物的岩石则是在开放体系中形成的。  相似文献   

Geological Analogy Expert System of Oil-Generating Depressions     

Ye Jiaren Lu Mingde Wang FeiqiaoChina University of Geosciences  Wuhan 《中国地质大学学报(英文版)》1993

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The Mathematic Models of the Kalman Filtering for Across-Fault Measurement     

You Lilan  Liu Dajie  Huang Jia'na  Liu Xue  Zhou KechangInstitute of Crustat Dynamics  SSB  Beijing  China Wuhan Technical University of Surveying  Mapping  Wuhan  China National Center for Seismic Data  Inforraanon  SSB  Beijing  China 《中国地震研究》1994,(3)

This paper makes a probe into the application of the Kalman filtering method to the data processing of across-fault measurements.On the basis of statistical regression,the mathematic and stochastic models of filtration are established by combining the regression method with Kalman filtering.In the filtering computation,not only the randomness of fault movements but also the time-dependent variation of environmental effects have been taken into consideration.By use of the adaptive filtering method,an estimation of the dynamic noise variance matrix is obtained through iteration.Models for one measuring line(leveling line or baseline),two measuring lines(both leveling lines or both baselines)and four measuring lines(two leveling lines and two baselines)are derived and established systematically.By means of these models,the data of across-fault measurements can be processed dynamically in real-time to provide the filtered values of height difference between benchmarks or baseline length at different time in  相似文献