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Analysis of Gravity Changes before and after the Akto MS6.7 Earthquake in 2016
Ailixiati Yushan,Liu Daiqin,Li Jie,Li Rui,Abudutayier Yasen,Sun Xiaoxu,Zhu Zhiguo,Li Guirong,Chen Li
Author NameAffiliation
Ailixiati Yushan Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China 
Liu Daiqin Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China 
Li Jie Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China 
Li Rui Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China 
Abudutayier Yasen Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China 
Sun Xiaoxu Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China 
Zhu Zhiguo Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China 
Li Guirong Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China 
Chen Li Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China 
摘要:
This paper analyzes the characteristics of time sequence changes of gravity points near the epicenter, different changes of measuring lines and gravity changes of measuring areas in point-line-area manner respectively with the 5-period mobile gravity data through densified observation by the South Xinjiang Observation Network after the 2015-2016 Akto earthquake in Xinjiang. The gravity observation results before the earthquake indicate that the Wuqia-Bulungkol area near the epicenter presented the trend of gravity value increasing since 2015, but the gravity value decreased half a year before the earthquake, and witnessed a high gradient zone of gravity changes during some periods before the earthquake. The gravity observation results after the earthquake show that there is a trend of opposite changes in gravity difference on the northern and southern sides of Bulunkou, and good correspondence exists between the characteristics of gravity field changes near the epicenter before and after the earthquake and the geologic structure distribution in the area.
关键词:  Akto earthquake  Gravity changes  Gravity anomalies
DOI:
分类号:
基金项目:This project was supported by the Natural Science Foundation of Xinjiang Uygur Autonomous Region (2016D01A062), Seismic Situation Tracking and Orientation Tasks (2016010218, 2017010204); Earthquake Science Foundation of Xinjiang (201613, 201612);and the National Natural Science Foundation of China (41474016,41374030):Earthquake Science and Technology Spark Plan (XH16042Y, XH17044).
Analysis of Gravity Changes before and after the Akto MS6.7 Earthquake in 2016
Ailixiati Yushan,Liu Daiqin,Li Jie,Li Rui,Abudutayier Yasen,Sun Xiaoxu,Zhu Zhiguo,Li Guirong,Chen Li
Abstract:
This paper analyzes the characteristics of time sequence changes of gravity points near the epicenter, different changes of measuring lines and gravity changes of measuring areas in point-line-area manner respectively with the 5-period mobile gravity data through densified observation by the South Xinjiang Observation Network after the 2015-2016 Akto earthquake in Xinjiang. The gravity observation results before the earthquake indicate that the Wuqia-Bulungkol area near the epicenter presented the trend of gravity value increasing since 2015, but the gravity value decreased half a year before the earthquake, and witnessed a high gradient zone of gravity changes during some periods before the earthquake. The gravity observation results after the earthquake show that there is a trend of opposite changes in gravity difference on the northern and southern sides of Bulunkou, and good correspondence exists between the characteristics of gravity field changes near the epicenter before and after the earthquake and the geologic structure distribution in the area.
Key words:  Akto earthquake  Gravity changes  Gravity anomalies