Page 212 - Contributed Paper Session (CPS) - Volume 1

CPS1282 Liu J. et al.

Spatial distribution characteristics of lightning
disaster risk and analysis of factors based on GIS-
--The case of Hohhot
1,2
2
2
Liu Jia , Du Jin Zhu , Wang Chun Zhi
1 Tian Jin University of Finance and Economics
2 Inner Mongolia University of Finance and Economics

Abstract
Based on the theory of risk analysis, this paper begins with the danger of
disaster-causing factors, the exposure of disaster-bearing bodies and the
vulnerability of disaster-bearing bodies. The lightning data, geographic
information and socio-economic data obtained by the Hohhot lightning
locator are used. Taking into account the factors such as ground flash density
and ground flash intensity, elevation, terrain fluctuation, land use, population
density, etc. the lightning disaster risk assessment index system of Hohhot is
constructed, and The index is weighted by the combination of AHP and
entropy method. The spatial distribution characteristics of lightning disaster
risk in Hohhot are obtained by using ArcGIS spatial analysis technology. The
results show that the extremely high-risk area of lightning disasters in Hohhot
is the northern part of Xin cheng District, the northern part of Hui min District,
and the southwest of Yu quan District. The high-risk areas are Sai han District,
Wu chuan County, Tumd Left Banne , Tuo ke tuo County, and Horinger County
and Qing shui he County; the densely populated areas such as the townships
and towns are all general risk areas. The risk of lightning in Hohhot is quite
different. The results of this paper can provide scientific decision-making basis
for relevant departments to defend and mitigate lightning disasters and
industrial planning layout.

Keywords
Lightning disaster risk; Analysis of Factors; Lightning locator; Spatial
Distribution Characteristics

1. Introduction
According to the calculation by the field observation station, the average
number of thunderstorm days per year in Hohhot is 36.4d, belonging to the
middle thunder area [1]. In order to ensure the normal operation of all
industrial departments in Hohhot, we must pay attention to the work of
lightning protection and disaster reduction. The meteorological department
of Hohhot city has been devoted to research on lightning mechanism and
forecasting methods for a long time, which provides strong support for
lightning forecasting and disaster prevention and reduction. As far as the
current forecast level is concerned, it is still impossible to achieve the accurate
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