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   

库米什盆地的硝酸盐型钾盐矿床   总被引：1，自引：0，他引：1  

王冰生 《新疆地质》1993,(1)

库米什盆地的硝酸盐型钾盐矿床,是利用~(40)K具有放射性特点,通过航空、地面伽玛能谱测量发现的。本文介绍了具有代表性C矿床的一般地质特征,总结了乌尊布拉克硝酸盐型钾盐矿床地质特征。矿床按其赋存状态可分为固体矿和卤水矿两类。水硝碱镁矾为最主要的工业矿物,共生矿物有钾硝石、钠硝石、杂卤石、芒硝、钠镁矾、石膏、石盐、极少量的泻利盐等。  相似文献   

Geological - Geophysical - Geochemical Exploration Models of Copper - Iron Deposits in Southeastern Hubei     

Guo XuequanSoutheast Hubei Geological Party  Hubei Bureau of Geology  Mineral Resources  Daye  Hubei 《《地质学报》英文版》1994,68(3)

This paper discusses geological-geophysical-geochemical models of such typical deposits as the Tieshan-type Fe-Cu deposit, the Tonglushan-type Cu-Fe deposit, the Yehuaxiang-type Cu deposit, the Jiguanzui-type Cu-Au deposit, and the Tongshankou-type Cu (Mo) deposit. The models were established based on practical data of the polymetallic deposits dominated by copper ore in southeastern Hubei. These models, which are graphically illustrated in the paper, systematically summarize the metallogenic geological conditions and the geophysical-geochemical characteristics of copper deposits in this area. The models are of practical significance for studying copper deposits, predicting mineral resources, choosing exploration methods, and searching for ore deposits based on existing ones in the study area.  相似文献   

The Ground Deformation Disaster in the City of Tianjin Associated with the Tangshan Earthquake     

Huang Liren  Zhao Chengkun  Hu Huimmg  Yang Guiye  Cao XiangchunFirst Land Deformation Monitoring Center  SSB  Tianjin  China Surveying  Mapping Bureau of Tianjin Municipality  Tianjin  China 《中国地震研究》1994,(3)

In this paper,a study of the principal characteristics of the ground deformation disasters in the city of Tianjin caused by the Tangshan earthquake is based on the results from the recent remeasurements of the geodetic controlling network of Tianjin and from on-site investigations after the earthquake.These results show that only the ground deformation in the Ninghe and Hangu areas near the epicenter reflect directly the co-seismic crustal stress,while the serious ground deformation and the engineering earthquake damages in the urban districts of Tianjin are controlled to a great extent by the local engineering geological structures,showing a kind of secondary disaster.Several suggestions are also proposed in the paper concerning the counter-measures for reducing the earthquake damage in big cities.  相似文献   

1989 Datong-Yanggao Earthquake with Ms=6.1     

Liu Wei  An Weiping  Zhao XinpmgSetomological Bureau of Shanxi Province  Taiyuan  China 《中国地震研究》1994,(3)

In this paper,the basic conditions and characteristics of the Datong-Yanggao earthquake are described in detail.The type of the earthquake,the aftershock activity,the earthquake trend,the characteristics of damage are analyzed and discussed.This earthquake belongs to a sequence of earthquake swarm type and is of the concentratedly occurring characteristics of several main shocks in a time sequence,and the aftershock activity was normally attenuated.Because of the unreasonable design of buildings and repeated vibration by several destructive main shocks within a short period,the damage in the high intensity region was aggravated.The analysis and the prediction procedure of the 1991 Datong-Yanggao earthquake(Ms=5.8)are also briefly given.  相似文献   

1992年夏季苏州持续高温及其中期预报     

施丹平  王国兰 《气象》1993,19(9):24-27

分析１９５１年以来苏州夏季高温以及持续高温与厄尔尼诺、亚洲经向环流指数、副高强度指数的关系，１９９２年夏季根据ＧＭＳ卫星云图所反应的厄尔尼诺状况和其他因素，对日本９６－１９２小时的数值预报进行修正，准确及时地作出了持续高温的中期预报。  相似文献   

旱直播水稻的农业气象条件研究     

成励民  宋宝初  范德新  薛有桂  何福金 《气象》1993,19(11):46-49

通过１９９０年，１９９１年连续两年的分期播种试验，分析了旱直播水稻的光温特性及其与空秕率的关系，并根据当地气候特点，提出旱直播水稻的最佳及安全播种期和抽穗期。  相似文献   

以可区分度量为准则进行变形监测网的优化设计     

陈永奇  邓康伟 《武汉大学学报(信息科学版)》1993,(4)

本文采用变形模型可区分度量的概念进行监测网的优化设计。在算法上采用计算机模拟逐一更新的计算过程。为了克服常规模拟法需要人工干预的缺点,引进了一些规则,利用计算机的判断和推理过程,达到了自动设计的目的。作为示范例子,文中最后还给出了一个模拟监测网的设计结果。  相似文献   

面向对象的语义数据模型及其在空间数据库中的应用     

朱欣焰  许云涛  张银州  李锦祥 《武汉大学学报(信息科学版)》1993,(4)

传统的数据库模型适合于表示数字字母数据,难以处理复杂的空间数据。面向对象的语义数据模型克服了传统数据模型的许多不足,越来越多地应用于计算机科学各个领域。本文先描述了面向对象的语义数据模型,然后介绍了建立于这种模型基础上的空间数据库实验系统 spobase。  相似文献   

SETTLING PROPERTIES OF COHESIVE AND NON-COHESIVE PARTICULATE MIXTURES IN WATER     

Xia Zhenhuan. Professor  Dept. Hydraulic Engineering. Tsinshua University.  Song Genpei. Lecturer. kept. Hydraulic Engineering. Tsinghua University.  Chen Yiping. Assistant. Dept. Hydraulic Engineerins  Tsomghua University  Wang Gang. Engineer. Research institute of Naval Engineering. PLA 《国际泥沙研究》1990,(1)

1. INTRODUCTIONAs a wide range of size distirbution including usually a certain POrtion of cohesive material is thecommon feature of the sediment constituting hyperconcentrated flows. it is desirable to study the settling properties of mixtures of cohesive and non--cohesjve sediment particles at high concentrations.Past studies on the settling of discrete particles in a suspension of fine cohesjve sediment is scarcein the literature. The Sediment Research Laboratory of Tsinghua Universi…  相似文献