辽宁省气候资源分析   总被引：7，自引：4，他引：7  

张玉书班显秀  纪瑞鹏袁国恩冯锐  张淑杰 《气象科技》2004,32(1):39-43

利用1961～1995年54个代表站点的气象资料，对辽宁省光、温、水及风能资源进行分析。总的来看，全省气候资源比较丰富，其主要特征表现为：各地全年降水主要集中在夏季，雨量比较稳定，与农作物需水高峰期相一致；除东部山区个别地区外，热量资源丰富，作物生育期积温保证率高；日照充足，太阳辐射强；风能资源较为丰富。  相似文献   

用Landsat TM订正NOAA／AVHRR监测洪涝精度方法研究     

纪瑞鹏  张淑杰  班显秀  陈鹏狮 《气象科技》2004,32(1):60-62

为了提高NOAA卫星监测洪涝灾害精度，分别对NOAA和TM卫星资料监测洪涝灾害的光学原理进行阐述，并以黑山县和台安县为例，利用Landsat TM资料空间分辨率高的特点，对NOAA／AVHRR资料监测洪涝精度进行订正分析，平均相对误差为4．4％。研究结果表明，利用TM对NOAA监测洪涝精度进行订正是提高NOAA卫星监测洪涝精度可行的有效方法。  相似文献   

Outer slope faulting associated with the western Kuril and Japan trenches   总被引：5，自引：0，他引：5  

Kazuo Kobayashi  Masao Nakanishi  Kensaku Tamaki  & Yujiro Ogawa 《Geophysical Journal International》1998,134(2):356-372

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氡,汞测量用于断裂活动性和分段的研究   总被引：25，自引：1，他引：25  

孟广魁  何开明 《中国地震》1997,13(1):43-51

作者首先给出海原活动断裂带从边沟至硝口的３条较长次级剪切断层，干盐池拉分盆地和边沟推挤构造区内的断层，以及尾端挤压构造区内的六盘山东麓逆断层的气氡，气汞浓度测量结果，然后分析了断层气浓度与断层活动性之间的关系，研究结果表明，测试条件大体一致的基础上，气氡，气汞浓度与断层活动性之间有着明显的对应关系，从而证明了断层气测量方法对于活断层分段和活动性研究是一种有效的手段。  相似文献   

用于土地利用分类的计算机复合分层分类方法——河北省南皮县土地利用分类研究     

胡德永  王杰生  何晓云  班艺舫 《遥感学报》1989,(4)

本文介绍了遥感图像的计算机复合分层分类方法:在用马氏距离判决分类基础上,引入了土壤图、地形图和纹理结构信息以及专家知识,对初始分类结果进行了分层判决。提高了分类精度。  相似文献   

Fine-grained aggregates in L3 chondrites     

Seiko Watanabe  Masao Kitamura  Nobuo Morimoto 《Earth and Planetary Science Letters》1987,86(2-4)

The textures and chemical compositions of the constituent minerals of the fine-grained aggregates (FGA's) of L3 chondrites were studied by the backscattered electron image technique, electron probe microanalysis, and transmission electron microscopy. Plagioclase and glass in the interstices between fine grains of olivine and pyroxene indicate that the FGA's once partly melted. Compositional zoning and decomposition texture of pyroxenes are similar to those observed in chondrules, indicating a common cooling history of the FGA's and chondrules. Therefore, the mechanism that caused melting of the FGA's is considered to be the same as for chondrules. Bulk compositions of the FGA's are within the range of those of chondrules, so some chondrules probably were produced by complete melting of the same precursor materials as those of the FGA's. The precursor materials must have included fine olivine and other grains that probably are condensates.  相似文献   

GIS在锦州地区气候资源分析中的应用   总被引：10，自引：2，他引：10       下载免费PDF全文

纪瑞鹏  陈鹏狮  班显秀 《气象科学》2003,23(4):472-477

利用气象台站观测的资料，建立气候要素空间分析模型，在Arcgis8．1地理信息系统软件支持下，将锦州地区气候资源推算至100m网格单元上。计算并分析了锦州地区主要气候资源及其空间分布规律，重点对90年代热量条件变化进行分析，制作出气候资源数字图像。  相似文献   

Petrological study of Nasu-Chausudake Volcano (ca. 16 ka to Present), northeastern Japan     

Masao Ban  Takahiro Yamamoto 《Bulletin of Volcanology》2002,64(2):100-116

Chausudake Volcano is representative of the active volcanoes in northeastern Japan, and has a record of many historical eruptions. Because its 16-ky eruptive history is well documented, Chausudake is well-suited for examining the temporal change of magma chamber processes and for assessing potential hazards. The activity of the Chausudake Volcano can be divided into six magmatic units (CH1-CH6). Most of its products have similar characteristics, but those from unit CH1 show wider variation. Most rocks are andesite and have plagioclase, clinopyroxene, orthopyroxene, and Fe-Ti oxides as phenocrysts, with or without olivine or quartz. Mafic inclusions, which are observed in most products, are basaltic andesites that have various combinations of the same phenocryst species. Petrographic features observed in host rocks and mafic inclusions, such as disequilibrium phenocrysts and resorbed textures, suggest magma mixing/co-mingling. Whole rock compositions of both host rocks and mafic inclusions show linear trends in variation diagrams, which suggest that the rocks are derived from the mixing/co-mingling between mafic and felsic end members. Bulk silica content of the mafic end-member magma is estimated to be ca. 52%, and contains Mg-rich olivine and An-rich plagioclase. The temperature of this end member is estimated to have been higher than 1,100 °C. Bulk silica content of the felsic end-member magma is estimated to be ~66%, and contains Mg-poor pyroxenes, An-poor plagioclase, and quartz phenocrysts, with a temperature of between 800 and 900 °C. Trace element compositions show that the end members have different origins, but have changed little over the entire 16-ky of activity. The mafic end-member magmas might come from a lower-crustal homogeneous, large magma chamber, whereas the felsic end-member magmas may be partial melts of crustal materials produced by the heat of the mafic end member. Felsic end-member magma may have accumulated in the middle crust before CH1 activity. The mixing ratio of the felsic to mafic end members was 0.5:0.5 to 0.4:0.6 for the CH1 unit, and ca. 0.4:0.6 for the other units. Considering that ca. 75% of the total volume of the eruptive products form the first unit, its wider compositional variation is attributed to more heterogeneous mixing ratios.  相似文献   

Rupture nucleations in the 1995 Hyogo-ken Nanbu earthquake and its large aftershocks   总被引：1，自引：0，他引：1  

Bunichiro Shibazaki  Yasuhiro Yoshida  Mamoru Nakamura  Masao Nakamura  Hiroshi Katao 《Geophysical Journal International》2002,149(3):572-588

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基于多源数据的广佛都市区城市引力结构特征分析     

占玮  陈朝隆  孙武  班鹏飞 《热带地理》2021,41(6):1292-1302

利用夜间灯光遥感数据和POI数据,采用断裂点分析法得出城市实体地域的范围大小。在此基础上引入交通便利系数和相对引力常量修正引力模型,分析广佛都市区内部各个城市实体地域间的引力强度和方向。结果表明：1）广佛都市区形成了以核心区为中心的“7+1”城镇体系结构;2）“七边形”正向城市体系结构围绕核心区域生成,“六边形”负向城市体系结构围绕西南区域生成,“西强东弱”格局明显;3）城市三角结构是广佛城市引力结构的基本单元,发展较好的城市组团为“核心区—顺德—南沙”“核心区—顺德—高明”“核心区—三水—花都”“核心区—花都—从化”,而“核心区—增城—南沙”和“核心区—高明—三水”组团则发展动能不足;4）广佛都市区引力势能大小及结构稳定与城市经济职能强度正相关。  相似文献