| Analysis of Gravity Changes before and after the Akto MS6.7 Earthquake in 2016 |
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| 作者姓名： | Ailixiati Yushan Liu Daiqin Li Jie Li Rui Abudutayier Yasen Sun Xiaoxu Zhu Zhiguo Li Guirong Chen Li |
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| 作者单位： | Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China |
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| 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). |
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| 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.
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| 关 键 词： | Akto earthquake Gravity changes Gravity anomalies |
| 收稿时间： | 2016/12/28 0:00:00 |
| 修稿时间： | 2017/2/8 0:00:00 |
Analysis of Gravity Changes before and after the Akto MS6.7 Earthquake in 2016 |
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| Ailixiati Yushan,Liu Daiqin,Li Jie,Li Rui,Abudutayier Yasen,Sun Xiaoxu,Zhu Zhiguo,Li Guirong,Chen Li.Analysis of Gravity Changes before and after the Akto MS6.7 Earthquake in 2016[J].Earthquake Research in China,2018,32(3):377-387. |
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| Authors: | Ailixiati Yushan Liu Daiqin Li Jie Li Rui Abudutayier Yasen Sun Xiaoxu Zhu Zhiguo Li Guirong and Chen Li |
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| Institution: | Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China and Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China |
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| 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. |
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| Keywords: | Akto earthquake Gravity changes Gravity anomalies |
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