测绘通报 ›› 2018, Vol. 0 ›› Issue (3): 93-97.doi: 10.13474/j.cnki.11-2246.2018.0083

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Detecting the Underground Coal Fire by Using Landsat Thermal Infrared Imagery-Taking Wuda Coalfield as an Example

ZHANG Zhimin1,2, JIANG Liming1,2, LIU Lin1,3, WANG Hansheng1,2   

  1. 1. State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China;
    2. University of the Chinese Academy of Sciences, Beijing 100049, China;
    3. School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2017-06-23 Revised:2017-09-15 Online:2018-03-25 Published:2018-04-03

Abstract:

In this paper,we use the threshold analysis technique to extract coal fire area of 2002,2007 and 2013 in Wuda coalfield on the basis of Landsat thermal infrared dataset.The results show that the coal fire area in 2007 is nearly doubled of that in 2002 due to extensive coal extraction,however,the coal fire in 2013 is effectively limited because of the extinguishing activities since 2010.Comparisons with the in-situ data manifest the error estimated by remote sensing is about 5%~10%,and solar radiation in the day leads lower inversion accuracy than the night,which causing higher virtual screening rate.Landsat imageries have important application potential in coal fire dynamic monitoring with its advantage of high spatial resolution,short revisiting cycle and large coverage.

Key words: Landsat, Wuda coal fire, thermal infrared remote sensing, land surface temperature

CLC Number: