Abstract
On the night of 27th Sept 2012, a hydrogen fluoride (HF) storage tank exploded in the industrial area of Gumi, Korea. In this study, an attempt was made to detect the damaged vegetation using a hyperspectral image. Assuming that HF was the most significant stressor of vegetation near the blast site, our results indicated that the difference in reflectance values between the 786 and 801 nm wavelengths became negative (−) and fluctuated from −5 to −160 in the affected vegetation. On the other hand, positive (+) values were found in the non-affected vegetation. The combination of normalized difference vegetation index (NDVI) and simple ratio (SR) was used [named combined vegetation index (CVI) in this study] to assess the accuracy of these measurements. Among 150,965 pixels that were defined as damaged vegetation, about 2.8 % were analyzed incorrectly in this study. As a result, factors such as wind direction, distance from the accident spot, elevation, and aspect were shown to affect damage distribution.
| Original language | English |
|---|---|
| Pages (from-to) | 1-10 |
| Number of pages | 10 |
| Journal | Journal of the Indian Society of Remote Sensing |
| DOIs | |
| Publication status | Accepted/In press - 2016 Jun 10 |
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Keywords
- Combined vegetation index
- Hydrogen fluoride
- Hyperspectral
- Remote sensing
- Vegetation
ASJC Scopus subject areas
- Earth and Planetary Sciences (miscellaneous)
- Geography, Planning and Development
Cite this
Application of CASI Hyperspectral Image to Analysis of the Distribution of Hydrogen-Fluoride-Damaged Vegetation in Gumi, Korea. / Yu, Hangnan; Lee, Jong Yeol; Lee, Woo-Kyun; Cui, Guishan; Cho, Jung Kil; Wei, Gwangjae; Li, Lan.
In: Journal of the Indian Society of Remote Sensing, 10.06.2016, p. 1-10.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Application of CASI Hyperspectral Image to Analysis of the Distribution of Hydrogen-Fluoride-Damaged Vegetation in Gumi, Korea
AU - Yu, Hangnan
AU - Lee, Jong Yeol
AU - Lee, Woo-Kyun
AU - Cui, Guishan
AU - Cho, Jung Kil
AU - Wei, Gwangjae
AU - Li, Lan
PY - 2016/6/10
Y1 - 2016/6/10
N2 - On the night of 27th Sept 2012, a hydrogen fluoride (HF) storage tank exploded in the industrial area of Gumi, Korea. In this study, an attempt was made to detect the damaged vegetation using a hyperspectral image. Assuming that HF was the most significant stressor of vegetation near the blast site, our results indicated that the difference in reflectance values between the 786 and 801 nm wavelengths became negative (−) and fluctuated from −5 to −160 in the affected vegetation. On the other hand, positive (+) values were found in the non-affected vegetation. The combination of normalized difference vegetation index (NDVI) and simple ratio (SR) was used [named combined vegetation index (CVI) in this study] to assess the accuracy of these measurements. Among 150,965 pixels that were defined as damaged vegetation, about 2.8 % were analyzed incorrectly in this study. As a result, factors such as wind direction, distance from the accident spot, elevation, and aspect were shown to affect damage distribution.
AB - On the night of 27th Sept 2012, a hydrogen fluoride (HF) storage tank exploded in the industrial area of Gumi, Korea. In this study, an attempt was made to detect the damaged vegetation using a hyperspectral image. Assuming that HF was the most significant stressor of vegetation near the blast site, our results indicated that the difference in reflectance values between the 786 and 801 nm wavelengths became negative (−) and fluctuated from −5 to −160 in the affected vegetation. On the other hand, positive (+) values were found in the non-affected vegetation. The combination of normalized difference vegetation index (NDVI) and simple ratio (SR) was used [named combined vegetation index (CVI) in this study] to assess the accuracy of these measurements. Among 150,965 pixels that were defined as damaged vegetation, about 2.8 % were analyzed incorrectly in this study. As a result, factors such as wind direction, distance from the accident spot, elevation, and aspect were shown to affect damage distribution.
KW - Combined vegetation index
KW - Hydrogen fluoride
KW - Hyperspectral
KW - Remote sensing
KW - Vegetation
UR - http://www.scopus.com/inward/record.url?scp=84973640204&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84973640204&partnerID=8YFLogxK
U2 - 10.1007/s12524-016-0592-3
DO - 10.1007/s12524-016-0592-3
M3 - Article
AN - SCOPUS:84973640204
SP - 1
EP - 10
JO - Journal of the Indian Society of Remote Sensing
JF - Journal of the Indian Society of Remote Sensing
SN - 0255-660X
ER -