STUDY ON THE METHOD OF IDENTIFYING HYDROTHERMALLY ALTERED ROCKS USING TM DATA

doi:10.6046/gtzyyg.1994.02.07

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Abstract Abstract Satellite remote sensing can detect earth.surfacial features from space. The environmental factors impact on TM data spectral signatures used to differentiate the alteration from surrounding rocks, is evaluated in Dong mao area.The method studied includs three aspects(1) TM data mask; (2) PCA, (3)PC component bilinear scatter map (MPS). TM data mask is used to mask out those pixels representing loess and clouds. PCA can increases the seperation between specture features more than one TM bands and then it follows that fewer bands to be used achieve higher degree of accuracy for ident ifying the altered rock spectrum signature. The Pc Component Scattering map is used to Analysis of PC component weighings and then the classification map is made according to the analytical result. This process can be monitored by the interactive mode between geologist and computer.This method is proved to be very effective in the study. The method is also successfully applied in recognating alteration in high altitude area in Northen Canada

Keywords Remote sensing Vegetation index Supervised classification Mining area expansion

Issue Date: 02 August 2011

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	QI Xiao-Ying
	YAN Ming-Xing
	XIE Qing-Feng
	LI Sheng-Chang
	CAI Chun-Nan
	GUI Xin-Xing
	HE Zhen
	CHEN Shu-Mei
	LI Chang-Song

Cite this article:

QI Xiao-Ying,YAN Ming-Xing,XIE Qing-Feng, et al. STUDY ON THE METHOD OF IDENTIFYING HYDROTHERMALLY ALTERED ROCKS USING TM DATA[J]. REMOTE SENSING FOR LAND & RESOURCES, 1994, 6(2): 41-45.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.1994.02.07 OR https://www.gtzyyg.com/EN/Y1994/V6/I2/41

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