河北省泥石流、滑坡、崩塌灾害发育程度区划的初步研究

本文在利用遥感技术对河北省山区以泥石流为主的地质灾害进行详细研究的基础上，采用多因素评判法，对河北省山区地质灾害发育程度进行了分区划分，并圈定了需要重点监测和防御的灾害区段。该成果为河北省山区的地质灾害防治、减灾、救灾等工作提供了科学依据，具有重要的实用价值。     

大同两次中强地震前应变,倾斜加卸载响应比异常研究

探讨了一种以应变，倾斜为响应的加卸载响应比的计算方法，并对大同两次中强地震前华北北部地区的应变，倾斜加卸载响应比进行了计算，结果显示，此方法对预报地震有一定的可行性。     

地图上曲线长度归算的分形方法研究

提出了一种基于分形理论的地图曲线长度归算方法，并给出了应用实例，为曲线长度归算的客观化、自动化提供了新的途径。     

辽西─冀北地区铀成矿遥感地质信息的研究

本文从辽西—冀北铀矿床成矿地质环境、时空分布及矿床特征出发，在以遥感信息为主，综合地质、物化探、水文等资料的全区性联幅应用开发、复合成图、综合分析以及重点地区的野外详细调查的基础上，运用切合全区地壳运动的演化理论，揭示了区内地壳演化及其结果的构造格局、区域地质背景、铀成矿条件和时空分布规律，建立了不同岩区环弧形构造解译标志，并阐述了其地质成因。解译了火山机构、小型封闭沉积盆地和铀矿密切相关的岩浆岩体，着重解译了控矿构造和矿化蚀变带的产状、类型，强调解译了卫片图像“热晕点”，并讨论了其地质意义和铀矿的关系，最后确定了遥感地质找矿模式和综合预测模型。     

艾比湖水面蒸发量及生态环境保护

本文在论述了艾比湖水面８０年代以来趋于动态稳定状态的基础上，用两种方法分析论证了艾比湖水面蒸发量，并就艾比湖及其生态环境的保护提出相应措施。     

川西北金木达矿床地质地球化学特征研究

金木达金矿床产于川西北地区阿坝把块西南缘,与中基-中酸性岩脉在空间上有密切关系。通过对该矿床的野外地质观察和室内测试研究。确定了该矿床的产出地质背景和矿化特征,划分了成矿期次,并根据同位素和流体包裹体等地球化学特征的研究。初步提出了该矿床矿质具有地层和岩浆岩两种来源的新观点。     

Late Oligocene sedimentary environments and provenance abrupt change event in the northern South China Sea

A significant change in composition was recorded in late Oligocene sediments from the northern South China Sea. This abrupt event coincided with the seafloor spreading axis jump across the Oligocene/Miocene boundary, leading to sedimentation breaks and slumps as well as obvious changes in sediment geochemical composition, and representing the greatest tectonic activity in the South China Sea region since the Oligocene. Through this tectonic event, the sedimentary environment in the Baiyun sag area transformed from a continental shelf in the late Oligocene to a continental slope since the early Miocene, the provenance of the sediments changed from neighboring areas to the hinterland of the South China block, and the sea level rose since the early Miocene in the area. Therefore, this abrupt change event has a profound influence on the evolution of petroleum offshore in the northern South China Sea. __________ Translated from Geology in China, 2007, 34(6): 1022–1031 [译自: 中国地质]     

Urban Shadow Detection and Classification Using Hyperspectral Image

Shadow is an inevitable problem in high-resolution remote sensing images. There are need and significance in extracting information from shadow-covered areas, such as in land-cover mapping. Although the illumination energy of shadow pixels is low, hyperspectral image can provides rich enough band information to differentiate various urban targets/materials and to classify them. This study firstly analyzes the spectra difference between shadow and non-shadow classes so as to detect shadow-pixel. To classify the shadow pixels, Spectral Angle Mapper (SAM) method was adopted to classify urban land-cover mapping, because it can reduce the influence resulted from different illumination intensity. Then, training samples were collected among different classes from the shadow pixels, and their Jeffries–Matusita (J–M) distance were computed to validate the spectral separability among classes, with the square distances of J–M among classes all bigger than 1.9. Finally, Maximum Likelihood Classifier (MLC) and Support Vector Machine (SVM) classifier were used to classify all the shadow pixels as different land-cover types. The results showed MLC and SVM outperform the SAM in classifying similar classes. The classification result in SVM was validated to find having conformity with ground truth.     

鱼耳石元素研究热点及常用测试分析方法综述

鱼耳石是鱼类内耳中的钙质沉积体,组成和结构非常稳定,它的生长轮受其生理控制和环境条件影响有规律地昼夜生长。耳石可作为鱼类的生物学记录者并为重建其生活特征和环境参数提供依据。文中就近20年来国内外关于鱼耳石微量元素和同位素方面的研究热点、鱼耳石元素研究中常用的测试分析方法以及其在环境监测中的应用前景和存在的问题作一整理和综述,望能为广大耳石研究者提供一些思路和揭示其在环境科学中的广阔应用前景。     

电磁环境建模与3维可视化

阐述了电磁环境相关研究的迫切需求,阐述了开展电磁环境可视化研究的必要性和重要性。分析了电磁环境可视化的几种方法,并对直接体绘制、面绘制和切片法来实现电磁态势体数据的可视化进行了研究。在此基础上,开发了基于OpenGL的电磁态势3维可视化系统。该系统实现了电磁环境计算与可视化,表现了区域的地理环境、电磁场的分布等情况,为相关研究人员提供及时、全面、动态的电磁态势信息,为决策和控制提供依据和保障。