我国火山灾害的主要类型及火山灾害区划图编制现状探讨

通过对《核电厂厂址选择中的地震问题》(HAF0101(1))有关条款的详细剖析,发震构造包括两个方面的含义:一是曾经是地震震源的地质构造;二是未来可能发生破坏性地震的地质构造。地震重演原则和构造类比原则是判定发震构造的两条基本依据,但在实际工作中构造类比原则的应用往往存在较大难度,对中强地震发震构造的判定尤其如此。文中提出:对中强地震构造带地貌差异性和第四纪地层分布特征的研究有可能提供识别发生中强地震地质构造的标志。     

两千年来中国自然与人文地理环境变迁及启示

科学理解中国自然与人文地理环境变迁的历史逻辑、基本规律和发展趋势,有助于找准历史方位,确立国土空间开发保护格局优化方向,推进“美丽中国”建设与经济社会可持续发展。本文集成现有研究成果,梳理了两千年来中国自然与人文地理环境变迁过程,总结了主要要素的变迁特点,探讨了这些历史变迁对“美丽中国”建设的启示。研究表明,两千年来中国自然地理环境变化主要表现为气候的多尺度准周期波动、黄土高原破碎化、北方地区沙漠化土地扩张、河口三角洲海岸在泥沙沉积作用下逐步外移、黄河和长江中下游湖泊萎缩、森林和温带草原面积下降。人文地理环境变迁突出表现在人口增长和格局变化、经济中心向东南迁移、耕地向外围扩张、交通网络由道路网和运河网向立体化综合交通网转变。依据上述变化的历史逻辑,未来基本自然地理格局和地理界线仍将长期存在,长江和黄河中下游星罗棋布的湖泊水系已难再现,南粮北运成为历史,但森林覆盖率仍有较大提升空间,交通网络建设仍需进一步推进,同时还要加强沿海城市应对气候变化威胁的防控体系建设。     

Analysis of historical meteor and meteor shower records: Korea, China, and Japan

We have compiled and analyzed historical Korean meteor and meteor shower records in three Korean official history books, Samguksagi which covers the three Kingdoms period (57 B.C.-A.D. 935), Goryeosa of Goryeo dynasty (A.D. 918-1392), and Joseonwangjosillok of Joseon dynasty (A.D. 1392-1910). We have found 3861 meteor and 31 meteor shower records. We have confirmed the peaks of Perseids and an excess due to the mixture of Orionids, north-Taurids, or Leonids through the Monte Carlo test. The peaks persist from the period of Goryeo dynasty to that of Joseon dynasty, for almost one thousand years. Korean records show a decrease of Perseids activity and an increase of Orionids/north-Taurids/Leonids activity. We have also analyzed seasonal variation of sporadic meteors from Korean records. We confirm the seasonal variation of sporadic meteors from the records of Joseon dynasty with the maximum number of events being roughly 1.7 times the minimum. The Korean records are compared with Chinese and Japanese records for the same periods. Major features in Chinese meteor shower records are quite consistent with those of Korean records, particularly for the last millennium. Japanese records also show Perseids feature and Orionids/north-Taurids/Leonids feature, although they are less prominent compared to those of Korean or Chinese records.     

STUDY ON THE FREQUENCY AND PRINCIPLE OF FLOOD CATASTROPHE IN THE CHANGJIANG DELTA AND ITS NEIGHBORING REGIONS IN THE LAST 2000 YEARS

1 INTRODUCTION The Changjiang (Yangtze) Delta and its neighboring regions mentioned in this article is located in the lower reaches of the Changjiang River, whose north, east, south and west adjacent places are Xingtongyang Canal, Huanghai Sea, East China Sea, Qiantang River, Hangzhou Bay and Nanjing, Zhenjiang respectively. These regions belong to Jiangsu Province, Zhejiang Province and Shanghai City in administrative division, being one of the economic developed regions. The …     

地理环境决定论是人类优秀文化遗产

对地理环境决定论是“资产阶级地理思想”提出质疑。并对人与自然关系进行系统梳理和反思:(1)地理环境决定论产生并发展于东西方两个伟大时代;(2)地理环境决定论在近代受到的批判是误解所致;(3)地理环境决定论大大丰富了历史唯物主义。提出地理环境决定论是人类优秀文化遗产。     

枣庄市国土资源局台儿庄分局国土资源档案中的电子文件归档管理探讨

该文对枣庄市国土资源局台儿庄分局国土资源档案管理中电子文件归档的规范化管理所存在的问题进行了探讨,认为基层国土部门在电子文件归档管理中不仅要规范电子文件归档的操作程序,还要建立健全基层国土电子文件归档管理制度,强化电子文件规范化管理意识,逐步提高电子文件管理的科学管理水平。     

关于AutoCAD地质图件与MapGIS文件转换的技术分析

针对地质报告中的图件对AutoCAD数据向M apG IS数据的转换做了相应分析。分别从直接对DXF格式的文件转换、需对DXF格式的文件做对应层的转换、通过对AutoCAD的图件进行相应删除后的文件转换以及对只需采用图形的一个局部的AutoCAD文件的转换等4个方面进行了相应的技术分析,并针对转换过程中出现的一些问题做了一定的分析。在一定程度上解决了AutoCAD数据文件对应于M apG IS数据文件的技术转换问题。     

西安灞河左库滑坡发育的阶段性及形成主因的历史转化

根据西安灞河左岸滑坡的基本特点、空间展布规律以及与后期沉积物之间的接触关系，本文分析论证了该区滑坡发育的阶段性特征及各阶段滑坡形成的主要原因与营力因素的历史转化性问题。     

The impact of the October–November 2000 floods on contaminant metal dispersal in the River Swale catchment,North Yorkshire,UK

During the autumn of 2000, large areas of England and Wales were affected by severe flooding, which caused widespread disruption and significant damage to property. This study attempts to determine the impact of these flood events on contaminated sediment dispersal and deposition in the River Swale catchment, Yorkshire, UK, where lead and zinc were extracted and processed in large quantities during the nineteenth century. Seventy samples of overbank and channel‐edge sediments were collected at 35 sites along the River Swale. Inductively coupled plasma‐mass spectrometry was used to measure contaminant metal concentrations in the 2000–63 µm (sand) and <63 µm (silt and clay) size fractions. In both the channel‐edge and overbank sediments collected from the upper and middle reaches of the River Swale, concentrations of lead, zinc and cadmium were found to exceed MAFF guidelines. Highest concentrations correspond to the input of contaminated material from intensively mined tributaries, and elevated levels can be observed 5–10 km downstream of these inputs. This indicates that the remobilization of contaminated material during major flood events is potentially a serious problem for activities such as agriculture that utilize the Swale floodplain. Copyright © 2003 John Wiley & Sons, Ltd.     

基于C#语言的国(境)外地震背景信息交互式产出系统

针对国(境)外地震专报产出过程中遇到的信息搜索困难、内容不规范、难以满足时效性等问题,基于C#编程语言,设计开发了国(境)外地震专报背景信息交互式产出系统。该系统只需值班人员少许的参与,自动获取人口信息、海啸信息、震中附近一定范围内的历史地震目录,生成地震的人口伤亡信息,最终产出word格式的地震专报。