基于手机位置的泸定6.8级地震人口热力分析

doi:10.12196/j.issn.1000-3274.2023.04.012

Abstract

Abstract: After Luding M6.8 earthquake on September 5, 2022, to understand the population distribution in the disaster area and determine the scope of the megaseismic region, we collect mobile phone location data for different periods in the disaster area using the third-party mobile push service, and analyse the population distribution before the earthquake and the population thermal changes after the earthquake by using kernel density space processing methods. The results show that after the earthquake the population heat is weakened in the Meizoseismal area, but enhanced in the towns far from the epicenter. We can fit the seismic influence field by interpolating the change rate of quantity of the mobile phones. The population thermal data can provide an effective way to quickly obtain population dynamics in disaster areas and provide data support for fast assessment of seismic disaster.

Key words: Luding M6.8 earthquake, Population heat, Seismic influence field, Earthquake emergency

CLC Number:

P315.7

YIN Jing-fei, LI Dong-ping, XIAO Ben-fu, MIAO Xin-hui, SHEN Wei-yong, YAO Di. Population Thermal Analysis of Luding M6.8 Earthquake Based on Mobile Phone Location[J]. EARTHQUAKE, 2023, 43(4): 185-199.

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Population Thermal Analysis of Luding M6.8 Earthquake Based on Mobile Phone Location

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