本文選題：遙感蝕變信息提取　切入點：地貌特征　出處：《成都理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：研究區(qū)位于香格里拉-德格地區(qū),屬于青藏高原的橫斷山脈地區(qū),該地區(qū)具有地形起伏大、植被覆蓋厚、冰雪覆蓋廣等特點。該區(qū)域海拔高度多在4000m以上,氣候寒冷,經(jīng)濟落后,交通條件差,野外工作條件艱苦,常規(guī)礦產(chǎn)勘查工作困難。遙感圖像具有廣闊的視域,能夠真實地反映各種地質(zhì)現(xiàn)象間的關(guān)系,在該區(qū)域地質(zhì)信息的解譯方面具有不可替代的優(yōu)勢。本文根據(jù)地貌特征選擇了三個區(qū)域作為典型研究區(qū):昌達溝研究區(qū)、玉龍研究區(qū)和格咱研究區(qū)。采用“3S”技術(shù)研究不同地貌背景下斑巖銅礦的信息,為西南三江地區(qū)不同地貌特征下斑巖銅礦的研究提供了參考。采用OLI數(shù)據(jù)、ALI數(shù)據(jù)、ASTER數(shù)據(jù)進行格咱研究區(qū)內(nèi)卓瑪?shù)V區(qū)的遙感蝕變信息重現(xiàn)性研究,遙感蝕變信息重現(xiàn)性好。本文采用ETM+數(shù)據(jù)、OLI數(shù)據(jù)、ASTER數(shù)據(jù)來提取玉龍礦區(qū)的礦化蝕變信息,主要提取了鐵染蝕變信息、羥基蝕變信息、絹云母信息和青磐巖化信息。本文對遙感影像進行了數(shù)據(jù)預(yù)處理、去干擾處理,采用了波段組合法、主成分分析法、最小噪聲分離法等多種方法來提取絹云母信息,多種方法所得結(jié)果相互印證。本文根據(jù)大地構(gòu)造、地層、成礦巖體、區(qū)域構(gòu)造進行蝕變信息的優(yōu)選,篩選出與斑巖銅礦的蝕變信息,為礦產(chǎn)勘查服務(wù)。本文在總結(jié)典型斑巖礦床成礦要素的基礎(chǔ)上,對成礦要素進行優(yōu)選,共選擇了5個成礦要素。本文根據(jù)遙感蝕變信息、線性構(gòu)造、環(huán)形構(gòu)造、地層等信息建立了定量的預(yù)測模型,計算研究區(qū)內(nèi)的成礦有利度。結(jié)合已知的礦區(qū)資料,驗證該區(qū)域的遙感找礦模型,并進行了成礦遠景區(qū)預(yù)測。運用遙感、GIS、地質(zhì)綜合分析技術(shù),改進遙感蝕變信息的技術(shù)方法與流程,提高了礦化蝕變信息提取的準確性,為該區(qū)域成礦預(yù)測提供參考依據(jù),更加高效的進行礦產(chǎn)勘探。
[Abstract]:The study area is located in Shangri-Dege area, which belongs to the cross-cut mountain region of the Qinghai-Tibet Plateau. The area is characterized by large topography, thick vegetation cover, wide snow and ice cover, etc. The altitude of this area is more than 4,000 m, and the climate is cold. Economic backwardness, poor traffic conditions, hard field work conditions and difficulties in conventional mineral exploration. Remote sensing images have a broad horizon and can truly reflect the relationship between various geological phenomena. There is an irreplaceable advantage in the interpretation of regional geological information. According to the geomorphological features, three regions are selected as typical research areas: Changdagou research area. The information of porphyry copper deposits in different geomorphological backgrounds was studied by "3s" technique in Yulong Research area and Gezan Research area. This paper provides a reference for the study of porphyry copper deposits under different geomorphological characteristics in the Sanjiang area of southwest China. Using OLI data and Ali data and ASTER data to study the reproducibility of remote sensing alteration information in Zhuoma mining area of Gezan study area. The remote sensing alteration information is reproducible. In this paper, the mineralization alteration information of Yulong mining area is extracted by ETM data and Oli data. In this paper, the remote sensing images are processed by data preprocessing, interference removal, band combination method, principal component analysis method, minimum noise separation method and other methods to extract sericite information. The results obtained by various methods confirm each other. In this paper, the alteration information of porphyry copper deposits is screened out according to the optimal selection of alteration information of geotectonic, stratigraphic, ore-forming rock mass and regional tectonics. On the basis of summarizing the metallogenic elements of typical porphyry deposits, five ore-forming elements have been selected according to the information of remote sensing alteration, linear structure and ring structure. A quantitative prediction model has been established to calculate the metallogenic advantage in the study area. The remote sensing prospecting model in this area has been verified by combining the known mining data. The remote sensing GIS-geological comprehensive analysis technology is used to improve the technical method and flow of remote sensing alteration information, and the accuracy of extracting mineralization alteration information is improved, which provides a reference basis for metallogenic prediction in this area. More efficient mineral exploration.
【學位授予單位】：成都理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P627;P618.41

【參考文獻】

相關(guān)期刊論文 前4條

1 張玉君,楊建民;基巖裸露區(qū)蝕變巖遙感信息的提取方法[J];國土資源遙感;1998年02期

2 代晶晶;王瑞江;曲曉明;辛洪波;;TerraSpec波譜儀在西藏多不雜斑巖銅礦區(qū)蝕變信息研究中的應(yīng)用[J];國土資源遙感;2013年01期

3 何政偉,孫傳敏,朱章森;搜索法—一種無模型礦產(chǎn)預(yù)測的方法[J];礦物巖石;2000年03期

4 李炳元;橫斷山脈范圍探討[J];山地研究;1987年02期

相關(guān)碩士學位論文 前1條

1 胡紫豪;西藏多龍斑巖型銅金礦預(yù)測工作區(qū)多元信息找礦預(yù)測[D];成都理工大學;2012年

，

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