DOI: 10.1016/j.jag.2013.09.014
Scopus记录号: 2-s2.0-84897565812
论文题名: Mineral mapping in the Maherabad area, eastern Iran, using the hyMap remote sensing data
作者: Molan Y ; E ; , Refahi D ; , Tarashti A ; H
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2014
卷: 27, 期: PARTB 起始页码: 117
结束页码: 127
语种: 英语
英文关键词: HyMap
; Mineral mapping
; Moving threshold
Scopus关键词: calcite
; chlorite
; epidote
; goethite
; kaolinite
; mapping
; mineral
; montmorillonite
; multispectral image
; porphyry
; remote sensing
; threshold
; Iran
英文摘要: This study applies matched filtering on the HyMap airborne hyperspectral data to obtain the distribution map of alteration minerals in the Maherabad area and uses virtual verification to verify the results. This paper also introduces "moving threshold" which tries to find an appropriate threshold value to convert gray scale images, produced by mapping methods, to target and background pixels. The Maherabad area, located in the eastern part of the Lut block, is a Cu-Au porphyry system in which quartz-sericite-pyrite,argillic and propylitic alteration are most common. Minimum noise fraction transform coupled with a pixel purity index was applied on the HyMap images to extract the endmembers of the alteration minerals, including kaolinite, montmorillonite, sericite (muscovite/illite), calcite, chlorite, epidote, and goethite. Since there was no access to any portable spectrometer and/or lab spectral measurements for the verification of the remote sensing imagery results, virtual verification achieved using the USGS spectrallibrary and showed an agreement of 83.19%. The comparison between the results of the matched filtering and X-ray diffraction (XRD) analyses also showed an agreement of 56.13%. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79686
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Mining Engineering, Sahand University of Technology, Tabriz, Iran; Remote Sensing Group, Geological Survey of Iran (GSI), Tehran, Iran
Recommended Citation:
Molan Y,E,, Refahi D,et al. Mineral mapping in the Maherabad area, eastern Iran, using the hyMap remote sensing data[J]. International Journal of Applied Earth Observation and Geoinformation,2014-01-01,27(PARTB)