利用航空遥感象片量算面积的精度分析

直接应用航空遥感象片进行面积量算,必然存在着某些误差。本文首先从理论上分析了这些误差的来源以及它们的计算方法,然后以实例数据对比,分析了这些误差的大小和对面积量算的影响情况,并讨论了应用航片直接进行面积量算的条件和应用范围,为在原航片上量算面积提供了计算数据和理论依据。     

Globalized conflicts of discourse: the type of conflict of proxies*

The article describes a new form of transnational environmental conflict that developed in the wake of globalisation. Activist in this new type of conflict still act as proxies of groups under pressure but in contrast to transnational environmental conflicts hitherto the target of their protests is rather their own society at home than the location of the pressured group. Despite these conditions it is claimed that this type of metaphorical conflict is going to become more frequent as alliances are built along the oppostion to a dominant discourse. According to the model, conflicts of values are easier to transfer on stages abroad or across the Atlantic than conflicts of interests and motivation for activists is higher as the return is affecting their home society. Dynamic and features of this type of conflict are explained with help of discourse theory.     

平顶山矿区地温信息管理系统研究

介绍了平顶山矿区地温信息管理系统软件(PGTIMS1.0)的设计思路。根据平顶山矿区地温信息的特点,该信息系统软件具有地温数据库、地温图形库、地温计算系统等三个子系统,可以进行地温信息管理、地温图形的管理、地温场中任意一点的地温计算。界面友好,操作方便。为科学地预测地下温度,评价地温环境、煤炭开发与热害治理之间的矛盾打下基础。      

长株潭旅游一体化研究

依托长株潭经济一体化,推行旅游一体化,将3市联合起来,把旅游经济做大、做强,形成一个增长极,带动全省旅游经济的腾飞,这是湖南旅游经济发展的必然趋势与选择.文中探讨了长株潭旅游一体化的基本内涵,并在客观分析3市旅游资源优势和旅游业发展现状的基础上,提出了3市旅游一体化的发展战略.     

基于测深数据的胶州湾底质类型估计方法

探讨了基于高精度多波束水深数据的底质分类方法。对高精度水深数据按一定采样窗口单元提取统计特征;利用聚类分析方法对采样窗口单元进行分类;将分类结果与表层沉积物底质调查结果以及声纳分类结果相对比,发现三者具有一致性。此方法可以用来识别基岩、砾石、沙和粘土等底质类型。     

三维地震在铁法矿区的应用

以铁法矿区采区三维地震工程实践为例,论述了三维高分辨率地震勘探技术在采矿工作面合理布置等方面的作用。采掘实践证明,三维地震勘探成果的应用消除了地质风险,已回采的几个综采工作面,未发生意外及重大地质变化。      

区域垂直应变率动态图像与丽江(Ms7.0)、门源(Ms6.4)等强震关系的研究

利用从区域精密水准重复测量资料中分离提取区域性垂直应变率与跨断层形变观测相配合生成的动态图像方法,分析了发生于滇西和祁连山－河西地形变监测区及附近的丽江（Ｍｓ７．０）、门源（Ｍｓ６．４）等中强以上过程中的区域垂直应变率动态演化特征;在此基础上,对孕震过程区域垂直应变率动态信息的时空非均匀性与应变能积累状况的研究探讨,提出了一些根据区域垂直应变率动态信息判定中短期强震危险区的判据。     

大亚湾不同介质中137Cs和90Sr的含量及行为特征

分别用ＨＰＧｅγ谱方法和放化分离β计数方法测量了大亚湾海水、沉积物和海洋生物样品的人工放射性核素＾１３７Ｃｓ和＾９０Ｓｒ。计算了海洋生物对＾１３７Ｃｓ和＾９０Ｓｒ的浓集因子及其在沉积物和海水中的分配系数,对＾１３７Ｃｓ和＾９０Ｓｒ的含量水平,＾１３７Ｃｓ和＾９０Ｓｒ及其与样品中天然放射性核素含量相关性,海洋生物对＾１３７Ｃｓ和＾９０Ｓｒ的浓集,以及＾１３７Ｃｓ和＾９０Ｓｒ的地球化学进行了讨论。     

莱州湾东部水域出现的文昌鱼幼体的初步调查

本文对莱州湾东部水域出现的文昌鱼幼体进行了初步调查。该水域的文昌鱼幼体分布面较广,从５ｍ和１２ｍ等深面上均有很高的出现频率和一定的生物量。６－８月间文昌鱼幼体体长为１．３ｍｍ－７．８ｍｍ,进入８月份后,幼体态转入底栖潜沙生活。     

A reappraisal of postglacial decay times from Richmond Gulf and James Bay, Canada

Decay times inferred from relative sea‐level (RSL) histories of previously glaciated regions provide a potentially important constraint on mantle rheology. We present a new compilation of RSL data from Richmond Gulf and James Bay, Canada. This recompilation reveals errors in previous compilations that led to inaccurate estimates for the Richmond Gulf decay time in a series of recently published articles. We derive updated estimates for the decay time at Richmond Gulf and James Bay using a methodology that incorporates errors in both the age and the height of the sea‐level markers. This exercise is guided by a series of synthetic RSL calculations that show that decay time estimates in the region can be significantly biased if the RSL time‐series are not corrected for global eustatic sea‐level trends, or if the estimates are based on composite RSL histories derived by combining data from both the Richmond Gulf and the James Bay regions. Our decay time analysis for Richmond Gulf applies the pioneering approach of Walcott (1980) to a large database and we derive a value of 4.0–6.6 kyr, where the range is defined by a misfit tolerance 10 per cent higher than the minimum. Our analysis for James Bay is based on the uplift curve derived by Hardy (1976) , and we estimate a decay time of about 2.0–2.8 kyr. The difference between our estimates for Richmond Gulf and James Bay may be due to errors in the observational record from these regions, but could also be influenced by lateral variations in lithospheric structure associated with the assembly of Laurentia.