搜索结果: 46-60 共查到“知识库 遥感地质学”相关记录172条 . 查询时间(1.828 秒)
Change Detection and Prediction of Urmia Lake and its Surrounding Environment During the Past 60 Years Applying Geobased Remote Sensing Analysis
Urmia Lake Geospatial Information System Remote Sensing Change Detection
2018/4/18
The gradual depletion of Urmia lake has been a challenge in both national and international scale during recent years. In recent decades the imprudent industrial development accompanied by continuous ...
LANDSLIDE IDENTIFICATION FROM IRS-P6 LISS-IV TEMPORAL DATA-A COMPARATIVE STUDY USING FUZZY BASED CLASSIFIERS
Kashmir earthquake CBSI LISS-IV Vegetation Index Temporal PCM
2018/4/18
While extracting land cover from remote sensing images, each pixel in the image is allocated to one of the possible class. In reality different land covers within a pixel can be found due to continuum...
Change Detection and Prediction of Urmia Lake and its Surrounding Environment During the Past 60 Years Applying Geobased Remote Sensing Analysis
Urmia Lake Geospatial Information System Remote Sensing Change Detection
2018/5/8
The gradual depletion of Urmia lake has been a challenge in both national and international scale during recent years. In recent decades the imprudent industrial development accompanied by continuous ...
遥感技术在地质遗迹调查评价中的应用——以陕西华县莲花寺滑坡为例
莲花寺滑坡 地质遗迹 遥感 IKONOS
2018/4/11
针对地质遗迹资源调查依靠野外考察效率低、成本高及容易造成资源遗漏问题, 将高空间分辨率卫星遥感技术引入地质灾害遗迹调查评价。基于IKONOS多光谱数据进行自然彩色变换, 采用乘积法变换与全色数据进行融合, 将遥感数据与DEM数据叠加生成三维遥感影像图, 在遥感解译和野外调查的基础上, 对莲花寺高速远程滑坡的形态特征、堆积体结构、成灾范围、成因机理及动力学过程进行研究, 为陕西华县莲花寺滑坡地质遗迹...
雅鲁藏布江蛇绿岩带中发育的铬铁矿矿床,具有极高的经济价值,其形成与蛇绿岩成分中的地幔橄榄岩关系密切。因此勘查与铬铁矿相关的橄榄岩变得十分有意义。遥感作为一种新型数据已被应用于岩性圈定及地质填图。文章以西藏山南地区罗布莎为例,旨在通过分析该地区多光谱Landsat7 ETM遥感数据,使用一系列光谱增强方法,包括去相关拉伸,波段比值,假彩色合成,主成分分析等,评估遥感数据对铬铁矿寄主岩石地幔橄榄岩识别...
综合找矿方法在西藏象日锑矿床的应用
地球化学和地球物理特征 遥感影像 矿(化)体特征 象日锑矿 西藏
2018/3/30
西藏措美县象日锑矿是近年来通过区域地质调查新发现的锑矿床,其矿化带受断裂构造控制。文章在简要介绍区域成矿地质背景后,通过综合分析矿区的地质特征、1∶5万水系沉积物地球化学特征、1∶1万土壤地球化学特征、物探音频大地电磁测深(AMT)和1∶1万激电中梯剖面特征,结合遥感地质特征,取得了较好的应用效果,为该区进一步找矿指明了方向,作者结合对该区地物化遥综合找矿勘查应用,总结出了适用于高原山区浅覆盖-隐...
基于分形维数的长汀县土地利用动态变化
土地利用 分形维数 稳定性指数 长汀
2019/1/16
以福建省长汀县为研究区域，基于遥感和GIS技术的支持，对研究区2000年、2009年、2016年的土地利用结构及分形动态进行分析。研究表明：经过多年的治理工作，长汀县的土地覆被情况有了很大的改善，林地面积不断增加，裸地面积持续减少。各土地利用斑块形态具有明显的分形特征，2000 — 2009年，耕地、建设用地分维值呈增加趋势，空间形态趋于不规则；林地、裸地和水域分维值减少，...
Analyzing vegetation dynamic trend on the Mongolian Plateau based on the Hurst exponent and influencing factors from 1982-2013
remote sensing GIMMS NDVI3g vegetation dynamic trend Hurst exponent residual trend analysis Mongolian Plateau
2018/4/9
This study analyzed the spatial and temporal variations in the Normalized Difference Vegetation Index (NDVI) on the Mongolian Plateau from 1982-2013 using Global Inventory Modeling and Mapping Studies...
通过对经济建设、资源勘探、环境保护和地学发展的需求分析，提出了进行精细地质研究的必要性，诠释了精细地质的概念及其技术体系。认为精细地质是以先进的技术方法和高灵敏度的测量仪器，对地质体进行精确细致的研究，形成先进、精确、实用的成果，达到提高地学科研与调查水平，高效服务经济建设的目的。精细地质的技术体系包括遥感、物探、化探、钻探、同位素测年、空间定位技术、计算机技术等，通过空中地表地下全方位立体化的综...
一种基于FPGA的图像自动增强算法与实现
图像增强 FPGA 航天遥感
2018/5/4
图像灰度分布不均匀是影响画质的重要因素，集中表现在对空间场景成像时，图像中存在大量过亮或过暗的区域.同时，算法的实时性和嵌入式平台的可实现性是设计实现空间应用载荷需要着重考虑的问题.针对上述问题，提出一种适合于FPGA实现的图像自动增强算法.算法以分段线性变换方法为基础，采用K均值聚类对视频图像的灰度直方图进行动态的区间划分；构建分段函数系数与直方图之间的定量关系，自动计算线性变换系数；采用高效的...
Application of Model-based Geostatistics for Natural Hazards Identification
Model-based geostatistics Ordinary kriging Kriging with external drift Natural hazard
2015/12/1
Annually much agricultural productions are lost by natural hazards such as flooding, extreme temperature, and drought. In this research we present a procedure to identify such hazards for rice croppin...
Some operative applications of remote sensing
remote sensing thermography heat capacity polarization biogas detections slope stability archaeological prospecting soil moisture
2015/9/29
Among the methods of applied geophysics, remote sensing plays a major and an ancillary role, at the same time. The major role deals with the acquisition and processing of data with the aim of describi...
ONTOLOGY FOR CONTEXT-AWARE VISUALIZATION OF SPATIAL DATA IN MOBILE DEVICES
Distributed GIS Location Based Services Context Context Awareness Ontology Visualization
2015/9/28
Recently, the visualization of the spatial data is gaining importance in the ubiquitous computing. In geoinformatics such as
distributed GIS or Location Based Services, context models are responsibl...
E-LEARNING COURSES FOR GIS AND REMOTE SENSING IN GERMANY STATUS AND PERSPECTIVES
Education Online learning E-learnin Training
2015/8/24
E-learning can play a vital role in providing suitable and effective learning environments to enhance the knowledge and skills of
students. The paper will begin with an analysis of the recent e-lear...
Various Drought Indices For Monitoring Drought Condition In Aravalli Terrain Of India
GIS Precipitation Vegetation Hazards Spatial Temporal Analysis
2015/7/30
Drought is a natural hazard that has significant impact on economic, agricultural, environmental, and social aspects. The western
regions of India (Rajasthan and Gujarat provinces) have suffered with...