ON IONOSPHERIC TEC ANOMALY BEFORE EARTHQUAKE
Zhang Qiang 1,2,3) ;Wu Yun 1,2,3) ;Lin Jian 1,2,3) ;Zhou Yiyan 1,2,3) ;Yang Shaomin 1,2,3) ; and Li Deqian 4)
1)Institute of Seismology, CEA, Wuhan 4300712)Wuhan Base of Institute Crustal Dynamics,CEA,Wuhan 4300713)Crustal Movement Laboratory, Wuhan 430071 4)Wuhan Fiducial Earthquake Station,Earthquake Administration of Hubei Province,Wuhan 430071
Abstract On the basis of the GPS phase observation from the reference stations of crustal movement observation network,the continuous 50day VTEC values before two Ms>6 earthquakes are analyzed, and the earthquake examples are tested with 1.5muliple standard diviation of 15day VTEC values as limited range.The results show that there were the ionospheric anomalies before the two related earthquakes.
Key words :
earthquake
ground-based GPS observation
TEC(Total election Content)
ionosphere
anomaly
Received: 01 January 1900
Corresponding Authors:
Zhang Qiang
[1]
GAO Meng,WANG Shunshun,WANG Cao,ZHU Huizhong,XU Aigong. Research on the Algorithm of Triple-Frequency BDS RTK between Middle-Range Baseline [J]. jgg, 2022, 42(1): 5-8.
[2]
ZHANG Kexin,TIAN Chongrui,JIAO Jian,ZENG Qiming. Research on Smoothing in InSAR Ionospheric Correction [J]. jgg, 2022, 42(1): 29-34.
[3]
LIANG Shichuan,QU Wei,CHEN Hailu,GAO Yuan,LI Jiuyuan,LI Da. Source Parameter Inversion and Seismogenic Tectonic of the Nyima MW 6.3 Earthquake in Tibet on July 23, 2020 Based on InSAR [J]. jgg, 2022, 42(1): 71-76.
[4]
LI Xiaohan,ZHENG Jianchang. Study on the Characteristics of Small Earthquake Clustering in Jiaodong Peninsula Area [J]. jgg, 2022, 42(1): 77-81.
[5]
WEI Jin,Lü Pinji,HAO Hongtao,WANG Jianwei,LI Ning,HU Minzhang. Study on the Anomalies of the Double Frequency Microseisms before Yingcheng MS 4.9 Earthquake [J]. jgg, 2022, 42(1): 88-95.
[6]
XIE Xinglong,REN Zhengwei,YE Zhennan,WANG Gaofeng,LI Qiuchen,MA Xuemei. Shallow Geophysical Exploration and New Understanding of Lixian-Luojiabu Fault Zone [J]. jgg, 2022, 42(1): 82-87.
[7]
BO Wanju,ZHENG Zhijiang,WU Yanqiang,ZHANG Licheng,ZHANG Shuangxi,WANG Tongqing,CHANG Liu. Study on the Relationship between GNSS Vertical Deformation and Precision Leveling Vertical Deformation——Take the Tianshan Tectonic Belt as an Example [J]. jgg, 2021, 41(9): 881-885.
[8]
TANG Jun,LI Yinjian,ZHONG Zhengyu,GAO Xin. Prediction Model of Ionospheric TEC by EOF and LSTM Neural Network [J]. jgg, 2021, 41(9): 911-915.
[9]
YANG Qiulian,ZHAO Zhen,HU Zhigang. Analysis of SBAS B1c Grid Ionospheric Algorithm Correction for BDS-3 [J]. jgg, 2021, 41(9): 916-919.
[10]
YUAN Weina,SHI Fuqiang,WU Jing. Cumulated Stress Changes and Its Implications for Current Seismic Activities in North China [J]. jgg, 2021, 41(9): 939-944.
[11]
LI Zhongya,HU Minzhang,HAO Hongtao,LI Hui. Resesrch on Gravity Field Variations Relative to 2017 Jiuzhaigou MS 7.0 Earthquake Based on Spherical Harmonic Analysis Method [J]. jgg, 2021, 41(9): 949-953.
[12]
YANG Jianwen,YE Beng,CHEN Jia,GAO Qiong,WANG Jun. GNSS Continuous Observation Short-Term Anomaly Index Extraction and Effectiveness Evaluation in Yunnan Area [J]. jgg, 2021, 41(9): 973-978.
[13]
ZHOU Yang. Seismic Data Prediction Based on Regression Model of Nuclear Mixed Effects [J]. jgg, 2021, 41(9): 967-972.
[14]
HUANG Xiaomei,CHEN Qiang,ZHANG Yijun,YANG Yinghui,JIN Xin,JIANG Ziqin. Analysis of the July 2019 Ridgecrest Earthquake and Aftershocks Using Double-Difference Relocation [J]. jgg, 2021, 41(8): 858-864.
[15]
CHEN Huifang,LIN Binhua,ZHANG Yanming,CAI Xinghui,YU Weiheng. Precise Determination of the Focal Depth of Taiwan Strait M6.2 Earthquake by sPn Phase [J]. jgg, 2021, 41(8): 853-857.