惠州市1：5000卫星正射影像图测绘工程研究

我国利用IKONOS卫星影像制作1:5000正射影像图主要是集中在研究领域。惠州市国土资源局于2004年2月利用IKONOS卫星影像制作覆盖惠州市辖区1．2万平方公里的1:5000正射影像图,项目由广东省国土资源信息中心承担。大面积的测区利用IKONOS卫星制作1: 5000正射影像图在国内还属首次。本文探讨该测绘工程的实施技术及质量控制方法。     

移动式测绘系统（MMS）的发展与应用

移动式测绘系统（MMS）已在交通管理、城市规划、地图更新、工程勘测、精准农业、战场测绘等领域广泛应用。本文在简要叙述MMS基本概念和主要功能的基础上，探讨了MMS的发展现状和应用方向，进而提出了当前发展MMS需要解决的关键技术，仅供参考。     

我国测绘行政管理体制发展现状和对策研究

在我国信息化社会的发展进程中,如何通过有效的测绘行政管理,做好测绘为经济建设和我国可持续发展战略的保障和服务是我国测绘事业将要面临的挑战和机遇。本文对我国测绘行政管理体制的发展进行了分析,并结合当前我国测绘行政管理体制的现状与存在的问题,提出了构建适应我国社会发展的、以地理空间信息管理与应用为核心目标的测绘行政体制的思路。     

《江苏省地图集》电子版的设计与实现

探讨地图集电子版的设计原则,从《江苏省地图集》电子版的设计与实现入手,分析地图集电子版的设计思路和技术方案.阐述多媒体电子地图集的解决方案.     

The main structure and tectonic features of the Chernorud-Mukhor site on the western shore of Lake Baikal from TEM and SP measurements

Transient electromagnetic (TEM), self-potential (SP) and geoelectrical mapping measurements were carried out at the Chernorud-Mukhor site in the Priolkhonje area on the western shore of the Lake Baikal. All measurements were made along several profiles across the main strike of the regional Primorsky fault. TEM measurements were carried out in a time range from a few tens of microseconds to several tens of milliseconds. The most important result of the 1D modelling of TEM soundings is the discovery of nearly horizontal boundaries that divide high resistive overlying and well conducting underlying rocks. The resistivity of the former is in the range from 100 Ωm to 1000 Ωm, while the resistivity of the latter varies from less than 1 Ωm to several tens of Ωm. This good conductive zone could also be verified by geoelectrical mapping using Schlumberger array (AB/2=100 m). Due to high conductivity of the underlying rocks only the upper boundary of the conductive layer could be determined by TEM soundings. A regional SP anomaly with amplitude of about −450 mV has also been observed above the low resistivity zone indicating the electron nature of its conductance. Geologically, the conductive zone is represented by a graphite-bearing layer within the region of archean rocks. Since that layer extends over a large area, it may be used as a key in studying structures and tectonics of the Priolkhonje area. A 1D TEM geoelectric section shows a wide, gently sloping syncline as a probable base structure of the Chernorud-Mukhor site. Neotectonic faults divide the syncline into vertically displaced blocks that form a wide complicated graben with a total amplitude of about 250 m.     

进入21世纪中国化探发展路线图

笔者回顾了近年来中国化探的一些理论与方法技术上的重大新进展,立足于地球化学填图基础上的矿集区、多元素异常集结区与地球化学块体理论,利用地球化学资料进行矿产资源潜力评价与稀有分散元素独立成矿的可能性评价,利用地球化学资料进行成矿岩体演化与中国西南大地幔柱的初步研究,这些探索性的研究均取得了令人鼓舞的成就。化探方法技术的应用成果显著,如地球化学填图与矿产勘查一体化,多元素分析与分析质量监控方法不断完善外来物覆盖浅钻取样,深穿透地球化学方法,全国生态、农业、环境地球化学调查,全球地球化学填图方法研究等。在回顾近年化探成果的基础上,提出中国化探在21世纪的发展,整体思路是立足于地球化学填图及地球化学填图与矿产勘查一体化。需要有将研究、填图、调查、勘查、工程一体化的大科学计划。提出了涉及地球化学填图、矿产勘查与综合利用、能源勘查、生态环境调查、全球变化研究等的12个重点发展方向。     

山东省基于天地图的测绘成果目录服务系统研究与建设

介绍了基于天地图山东的测绘成果目录服务系统的特点、结构和功能。该系统的建设提高了测绘公共服务能力和水平,实现了基础测绘成果高效管理,推动了测绘成果社会化应用,促进了测绘成果管理信息化的进程,提高了山东省基础测绘成果分发服务水平与效率。     

Weather extremes and street life in India—Implications of Fuzzy Cognitive Mapping as a new tool for semi-quantitative impact assessment and ranking of adaptation measures

The potential impacts of progressing climate change are alarming. Some adverse consequences are now unavoidable and adaptation measures are increasingly needful. This poses enormous challenges for emerging megacities in the Global South, which barely manage in current weather conditions. This paper introduces Fuzzy Cognitive Mapping as a new tool for structured, semi-quantitative assessments of climate change impacts and adaptation measures.Fuzzy Cognitive Mapping is used to evaluate differences in sensitivities to heatwaves and rainstorms across socio-economic groups and for the ranking of useful adaptation options, based on 188 individual interviews to the impacts of extreme weather events in Hyderabad, India. The results of this multi-stakeholder assessment indicate that rainstorms affect low-income residents more than heatwaves, while the opposite is true for medium-income respondents. The latter are also less seriously affected by extreme weather in general. Profession, though, not income determines the kind of impact that people feel most affected by. Individual characteristics like age and gender do not significantly explain differences in the data, but religion does. This is because, in Hyderabad, Muslims live in the older, less serviced and more affected parts of the city. However, semi-quantitative scenario analyses suggest that, under future climate change, many parts of the city will become increasingly exposed to the effects of extreme weather. Planned investments in urban infrastructure will be seriously challenged by climate change and preventive adaptation measures are urgently needed to at least maintain the current level of quality of life. Investments in the health infrastructure appear to be most effective in reducing the impact of heatwaves and investments in the traffic infrastructure most effective in reducing the impact of rainstorms. However, looking at heat and rain events together—which is realistic as they are both projected to increase and often occur in the same year—reveals that investments in water infrastructure and management have greatest potential to reduce impacts across all localities and on all social groups, particularly the lower-income classes. This is because first-order impacts caused by inadequate water infrastructure often give rise to second- or third-order impacts. Addressing the root cause is the most effective way to break cause-and-effect chains and prevent proliferation of negative consequences. Similar studies are suggested in other cities in order to support adaptation mainstreaming in complex urban environments. Fuzzy Cognitive Mapping proved a useful, semi-quantitative tool for climate change impact and adaptation assessments.     

Mapping models for near-conservative systems with applications

A systematic method is presented to construct a mapping model for a near-conservative system, based on that of Hadjidemetriou for a Hamiltonian system [1]. The mapping we constructed preserves the basic features of the actual system. We apply this method to the forced oscillating system and to the 3 : 1 resonant grain motion in the presence of Poynting-Robertson drag.Supported by the National Natural Science Foundation of China.     

Relationship between garnet skarn and W mineralization: A case study from the Tongshankou Cu-Mo-W deposit,Daye, Hubei.SCIEI北大核心CSCD

石榴子石是矽卡岩型矿床的标志性矿物之一,其结构和成分特征被广泛用来示踪早期成矿流体性质的变化,但其生长过程与金属元素富集过程的关系还不清楚。本文对长江中下游成矿带最西端鄂东矿集区内的铜山口铜钼钨矿床中的石榴子石开展了显微结构和电子探针主量元素、LA-ICP-MS微量元素点分析和面扫描分析。结果显示,铜山口矿床中的石榴子石端元成分以钙铁榴石-钙铝榴石为主,普遍含有一定量的W,特别是在钙铁榴石端元比例高的石榴子石中(可达3898×10-6),且W与Mo、As、Sn存在明显的正相关关系、与Ti存在一定的负相关关系,指示W以类质同象的方式进入石榴子石晶格。石榴子石可包裹结构简单的白钨矿或被具复杂结构的白钨矿交代,指示石榴子石记录了白钨矿形成前和形成过程中流体性质(氧逸度和W含量等)的变化。铜山口矿床中钙铁榴石的大量结晶,导致成矿早期W的大量分散,不利于高品位和大规模钨矿的形成,仅在这些钙铁榴石遭受强烈的退化蚀变时,释放的W在一定程度能够提高矿石的品位,这可能是氧化性矽卡岩型钨矿通常比还原性矽卡岩型钨矿品位低、规模小的重要原因。石榴子石的成分特征(如W、Sn等元素含量和W/Sn、W/Mo和W/As等比值)可以作为判断矽卡岩的氧化还原性和钨矿床的品位及规模的依据,并具有成为W、Mo和Sn等矿床的找矿勘查指示矿物的潜力。