DOI: 10.1016/j.jag.2015.11.016
Scopus记录号: 2-s2.0-84971356451
论文题名: A general framework of TOPSIS method for integration of airborne geophysics, satellite imagery, geochemical and geological data
作者: Abedi M ; , Norouzi G ; -H
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2016
卷: 46 起始页码: 31
结束页码: 44
语种: 英语
英文关键词: Mineral potential/prospectivity mapping
; Porphyry type deposit
; TOPSIS method
Scopus关键词: airborne sensing
; geochemistry
; geological mapping
; geophysics
; mineralization
; multicriteria analysis
; ore deposit
; porphyry
; satellite imagery
; Iran
; Kerman [Iran]
英文摘要: This work presents the promising application of three variants of TOPSIS method (namely the conventional, adjusted and modified versions) as a straightforward knowledge-driven technique in multi criteria decision making processes for data fusion of a broad exploratory geo-dataset in mineral potential/prospectivity mapping. The method is implemented to airborne geophysical data (e.g. potassium radiometry, aeromagnetic and frequency domain electromagnetic data), surface geological layers (fault and host rock zones), extracted alteration layers from remote sensing satellite imagery data, and five evidential attributes from stream sediment geochemical data. The central Iranian volcanic-sedimentary belt in Kerman province at the SE of Iran that is embedded in the Urumieh–Dokhtar Magmatic Assemblage arc (UDMA) is chosen to integrate broad evidential layers in the region of prospect. The studied area has high potential of ore mineral occurrences especially porphyry copper/molybdenum and the generated mineral potential maps aim to outline new prospect zones for further investigation in future. Two evidential layers of the downward continued aeromagnetic data and its analytic signal filter are prepared to be incorporated in fusion process as geophysical plausible footprints of the porphyry type mineralization. The low values of the apparent resistivity layer calculated from the airborne frequency domain electromagnetic data are also used as an electrical criterion in this investigation. Four remote sensing evidential layers of argillic, phyllic, propylitic and hydroxyl alterations were extracted from ASTER images in order to map the altered areas associated with porphyry type deposits, whilst the ETM+ satellite imagery data were used as well to map iron oxide layer. Since potassium alteration is generally the mainstay of porphyry ore mineralization, the airborne potassium radiometry data was used. The geochemical layers of Cu/B/Pb/Zn elements and the first component of PCA analysis were considered as powerful traces to prepare final maps. The conventional, adjusted and modified variants of the TOPSIS method produced three mineral potential maps, in which the outputs indicate adequately matching of high potential zones with previous working and active mines in the region. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80104
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Mining Engineering, College of Engineering, University of Tehran, Iran
Recommended Citation:
Abedi M,, Norouzi G,-H. A general framework of TOPSIS method for integration of airborne geophysics, satellite imagery, geochemical and geological data[J]. International Journal of Applied Earth Observation and Geoinformation,2016-01-01,46