ALTERATION INFORMATION EXTRACTION BY REMOTE SENSING TECHNOLOGY AROUND OLD MINES IN VEGETATION-COVERED AREAS

YIN Zhan; ZHANG Jian-guo; CHEN Xing-lin; ZHANG Li-jun

doi:10.13686/j.cnki.dzyzy.2024.02.007

2024 Vol. 33, No. 2

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Article navigation > Geology and Resources > 2024 > 33(2): 187-195

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YIN Zhan, ZHANG Jian-guo, CHEN Xing-lin, ZHANG Li-jun. ALTERATION INFORMATION EXTRACTION BY REMOTE SENSING TECHNOLOGY AROUND OLD MINES IN VEGETATION-COVERED AREAS[J]. Geology and Resources, 2024, 33(2): 187-195. doi: 10.13686/j.cnki.dzyzy.2024.02.007

Citation:

YIN Zhan, ZHANG Jian-guo, CHEN Xing-lin, ZHANG Li-jun. ALTERATION INFORMATION EXTRACTION BY REMOTE SENSING TECHNOLOGY AROUND OLD MINES IN VEGETATION-COVERED AREAS[J]. Geology and Resources, 2024, 33(2): 187-195. doi: 10.13686/j.cnki.dzyzy.2024.02.007

ALTERATION INFORMATION EXTRACTION BY REMOTE SENSING TECHNOLOGY AROUND OLD MINES IN VEGETATION-COVERED AREAS

1.
China Non-ferrous Metals Resource Geological Survey, Beijing 100012, China
2.
Hunan Remote Sensing Geological Survey and Monitoring Institute, Changsha 410083, China

Received Date: 14 December 2022

Revised Date: 24 February 2023

Publish Date: 25 April 2024

Abstract

Abstract

The wall rock alteration information in vegetation-covered areas is weak due to less exposed bedrock. To carry out prospecting work in the surroundings of old mines, after a series of experiments by different methods, the combined technology of vegetation suppression and rock-soil mass spectrum test is finally chosen for alteration information extraction. Firstly, the forcing invariant vegetation suppression technique is used to reduce vegetation interference, then the spectral information of altered wall rock and rock mass in altered zone of the existing mine is collected to establish a spectral sample library in the study area, and finally the extraction of alteration information is completed by CART (classification and regression tree) technique. The experiment results show that the CART alteration information extraction method based on vegetation suppression technique is effective in the extraction of remote sensing alteration information around old mines in vegetation-covered areas.
- remote sensing /
- alteration information /
- spectral curve /
- vegetation suppression /
- CART /
- old mine

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References

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