Using Airgun Source Signals to Study Regional Wave Velocity Changes before and after the Yunlong M_S5.0 and Yangbi M_S5.1 Earthquakes
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摘要
On the basis of the airgun source signals recorded by the stations from January, 2016 to June, 2017, we use cross-correlation detection technology to obtain the characteristics of the stable phase travel time change of each station. We used the Yunlong M_S5.0 and Yangbi M_S5.1 earthquakes as samples. According to regional characteristics, 13 stations with high signal-to-noise ratios and complete data were selected(including 3 fixed stations and 10 active source stations). They are divided into four regions, and on the basis of the GNSS baseline data, the characteristics of regional wave velocity changes before and after the earthquake are analyzed. The results show that the station phase travel time change and the regional stress characteristics represented by the GNSS baseline data have good correlation in the short-term. Due to different degrees of regional stress, there are differences in the travel time changes of different stations in the four regions. Before the Yunlong M_S5.0 and Yangbi M_S5.1 earthquakes, with regional stress adjustment, there is an upward trend in the travel time changes of related stations in the adjacent areas of up to 0.02 s. The difference is that there are differences in the time nodes and duration of the travel time anomalies, and there is a reverse descent process after the Yangbi M_S5.1 earthquake. There are different degrees of travel time fluctuations in the relevant stations before and after the two earthquakes, but the fluctuation range before and after the earthquake was small. Compared with the water level change of the reservoir, the adjustment of the regional stress is more likely to have a substantial impact on the travel time changes of the relevant stations.
On the basis of the airgun source signals recorded by the stations from January, 2016 to June, 2017, we use cross-correlation detection technology to obtain the characteristics of the stable phase travel time change of each station. We used the Yunlong M_S5.0 and Yangbi M_S5.1 earthquakes as samples. According to regional characteristics, 13 stations with high signal-to-noise ratios and complete data were selected(including 3 fixed stations and 10 active source stations). They are divided into four regions, and on the basis of the GNSS baseline data, the characteristics of regional wave velocity changes before and after the earthquake are analyzed. The results show that the station phase travel time change and the regional stress characteristics represented by the GNSS baseline data have good correlation in the short-term. Due to different degrees of regional stress, there are differences in the travel time changes of different stations in the four regions. Before the Yunlong M_S5.0 and Yangbi M_S5.1 earthquakes, with regional stress adjustment, there is an upward trend in the travel time changes of related stations in the adjacent areas of up to 0.02 s. The difference is that there are differences in the time nodes and duration of the travel time anomalies, and there is a reverse descent process after the Yangbi M_S5.1 earthquake. There are different degrees of travel time fluctuations in the relevant stations before and after the two earthquakes, but the fluctuation range before and after the earthquake was small. Compared with the water level change of the reservoir, the adjustment of the regional stress is more likely to have a substantial impact on the travel time changes of the relevant stations.
On the basis of the airgun source signals recorded by the stations from January, 2016 to June, 2017, we use cross-correlation detection technology to obtain the characteristics of the stable phase travel time change of each station. We used the Yunlong M_S5.0 and Yangbi M_S5.1 earthquakes as samples. According to regional characteristics, 13 stations with high signal-to-noise ratios and complete data were selected(including 3 fixed stations and 10 active source stations). They are divided into four regions, and on the basis of the GNSS baseline data, the characteristics of regional wave velocity changes before and after the earthquake are analyzed. The results show that the station phase travel time change and the regional stress characteristics represented by the GNSS baseline data have good correlation in the short-term. Due to different degrees of regional stress, there are differences in the travel time changes of different stations in the four regions. Before the Yunlong M_S5.0 and Yangbi M_S5.1 earthquakes, with regional stress adjustment, there is an upward trend in the travel time changes of related stations in the adjacent areas of up to 0.02 s. The difference is that there are differences in the time nodes and duration of the travel time anomalies, and there is a reverse descent process after the Yangbi M_S5.1 earthquake. There are different degrees of travel time fluctuations in the relevant stations before and after the two earthquakes, but the fluctuation range before and after the earthquake was small. Compared with the water level change of the reservoir, the adjustment of the regional stress is more likely to have a substantial impact on the travel time changes of the relevant stations.
引文
Chen Jia,Li Xiaobin,Yang Jun,Ye Beng.Large volume air-gun source spectrum characteristics of Binchuan,Yunnan[J].Earthquake Research in China,2016,32(2):216-221(in Chinese with English abstract).
Chen Yong,Zhu Rixiang.Proposed project of“Underground Bright Lump”[J].Advances in Earth Science,2005,20(5):485-489(in Chinese with English abstract).
Chen Yong,Wang Baoshan,Ge Hongkui,Xu Ping,Zhang Wei.Proposed of transmitted seismic stations[J].Advances in Earth Science,2007a,22(5):441-446(in Chinese with English abstract).
Chen Yong,Zhang Xiankang,Qiu Xuelin,Ge Hongkui,Liu Baojin,Wang Baoshan.A new way to generate seismic waves for continental crustal exploration[J].Chinese Science Bulletin,2007b,52(16):2264-2268.
Chen Yong,Li Yijing.Seismic wave radar research:using active source to detect continental crust structure[J].Journal of University of Science and Technology of China,2007c,37(8):813-819(in Chinese with English abstract).
Chen Yong,Wang Baoshan.Study on the underground structure and its changes in the shallow part of continent with an Airgun source.In:Proceedings of the Annual Meeting of the Chinese Geophysical Society.Beijing:Chinese Geophysical Society,2016(in Chinese).
Chen Yong,Wang Baoshan,Yao Huajian.Seismic airgun exploration of continental crust structures[J].Science China Earth Sciences,2017,60(10):1739-1751.
Li Xiaobin,Ye Beng,Yang Jun,Chen Meng,Jin Mingpei,Wang Baoshan.Research on comparison of excitation efficiency of air guns with various combinations in water reservoir[J].Journal of Seismological Research,2016,39(3):458-465(in Chinese with English abstract).
Liu Zifeng,Su Youjin,Wang Baoshan,Wang Bin,Yang Jun,Li Xiaobin.Study on analysis method of travel time variations of seismic wave of active source in Binchuan[J].Journal of Seismological Research,2015,38(4):591-597(in Chinese with English abstract).
Luan Yi,Yang Hongfeng,Wang Baoshan.Large volume air-gun waveform data processing(I):Binchuan,Yunnan[J].Earthquake Research in China,2016,32(2):305-318(in Chinese with English abstract).
Okaya D.,Henrys S.,Stern T.Double-sided onshore-offshore seismic imaging of a plate boundary:“supergathers”across South Island,New Zealand[J].Tectonophysics,2002,355(1/4):247-263.
Qiu Xuelin,Chen Yong,Zhu Rixiang,Xu Huilong,Shi Xiaobin,Ye Chunming,Zhao Minghui,Xia Shaohong.The application of large volume airgun sources to the onshore-offshore seismic surveys:implication of the experimental results in northern South China Sea[J].Chinese Science Bulletin,2007,52(4):553-560.
Wang Bin,Wu Guohua,Su Youjin,Wang Baoshan,Ge Hongkui,Jin Mingpei,Yang Jun,Zhang Qiming,Li Tao.Site selection and construction process of Binchuan earthquake signal transmitting seismic station and its preliminary observation result[J].Journal of Seismological Research,2015,38(1):1-6(in Chinese with English abstract).
Wang Bin,Li Xiaobin,Liu Zifeng,Yang Jun,Yang Runhai,Wang Baoshan,Yang Wei.The source and observation system of Binchuan earthquake signal transmitting seismic station and its preliminary observation results[J].Earthquake Research in China,2016,30(3):316-325.
Wang Baoshan,Zhu Ping,Chen Yong,Niu Fenglin,Wang Bin.Continuous subsurface velocity measurement with coda wave interferometry[J].Journal of Geophysical Research:Solid Earth,2008,113(B12):B12313.
Wang Baoshan,Yang Wei,Wang Weitao,Yuan Songyong,Song Lili,Ge Hongkui,Wang Bin,Wu Guohua,Su Youjin,Liu Xuejun,Jin Mingpei,Yang Jun.Un-blur the signature of large volume airgun excited in a reservoir with deconvolution.In:Proceedings of the Twenty-eighth Annual Meeting of the Chinese Geophysical Society.Beijing:Chinese Geophysical Society,2012(in Chinese).
Wang Baoshan,Ge Hongkui,Wang Bin,Wang Haitao,Zhang Yuansheng,Cai Huiteng,Chen Yong.Practices and advances in exploring the subsurface structure and its temporal evolution with repeatable artificial sources[J].Earthquake Research in China,2016,30(3):284-297.
Wang Weitao,Wang Baoshan,Ge Hongkui,Chen Yong,Yuan Songyong,Yang Wei,Li Yijin.Using active source to monitor velocity variation in shallow sediment caused by the Wenchuan earthquake[J].Earthquake Research in China,2009,25(3):223-233(in Chinese with English abstract).
Wang Weitao,Wang Baoshan,Jiang Shengmiao,Hu Jiupeng,Zhang Yuansheng.A perspective review of seismological investigation on the crust at regional scale using the active Airgun source[J].Journal of Seismological Research,2017,40(4):514-524(in Chinese with English abstract).
Wang Weitao,Wang Baoshan,Jiang Shengmiao,Hu Jiupeng,Zhang Yuansheng.Regional scale seismological investigation on the continent crust using airgun sources---A perspective review[J].Earthquake Research in China,2018,32(3):315-329.
Wei Yunyun,Wang Haitao,Su Jinbo,Chen Xiangjun,Wang Qiong.The preliminary study on travel time abnormal variation of reflection wave phase of air-gun in Xinjiang before two earthquakes with MS5.0[J].Earthquake Research in China,2016,32(2):270-281(in Chinese with English abstract).
Yang Wei,Ge Hongkui,Wang Baoshan,Yuan Songyong,Song Lili,Jia Yuhua,Li Yijin.Velocity changes observed by the precisely controlled active source for the Mianzhu MS5.6 earthquake[J].Chinese Journal of Geophysics,2010,53(5):1149-1157(in Chinese with English abstract).
Zhai Qiushi,Yao Huajian,Wang Baoshan.Study on the deconvolution method and processing flow of airgun source data[J].Earthquake Research in China,2016,30(3):394-404.
Zhang Yuansheng,Wang Baoshan,Chen Yong,Wang Lanmin,Zou Rui,Qin Manzhong,Guo Xiao,Shen Xuzhang,Wei Congxin,Liu Xuzhou,Wang Yahong,Sun Dianfeng,Guo Yingxia,Yin Liang.Travel-time variations before and after two major earthquakes derived from active-source seismic data[J].Chinese Journal of Geophysics,2017,60(10):3815-3822(in Chinese with English abstract).
Zhang Yunpeng,Li Xiaobin,Wang Weitao,Wang Weitao,Wang Baoshan,Ye Beng,Yang Jun,Wang Bin.Data service system and data quality assessment for mobile observation of transmitting seismic stations in Binchuan,Yunnan[J].Journal of Seismological Research,2017,40(4):525-533(in Chinese with English abstract).
Zhou Qingyun.Preliminary study on directivity of Binchuan air-gun source energy radiation[J].Journal of Geodesy and Geodynamics,2018,38(7):754-759(in Chinese with English abstract).
Zhou Qingyun,Chen Junlei.Influence of different triggering conditions of airgun source on travel time changes[J].Journal of Seismological Research,2018,41(2):264-272(in Chinese with English abstract).
Chen Yong,Zhu Rixiang.Proposed project of“Underground Bright Lump”[J].Advances in Earth Science,2005,20(5):485-489(in Chinese with English abstract).
Chen Yong,Wang Baoshan,Ge Hongkui,Xu Ping,Zhang Wei.Proposed of transmitted seismic stations[J].Advances in Earth Science,2007a,22(5):441-446(in Chinese with English abstract).
Chen Yong,Zhang Xiankang,Qiu Xuelin,Ge Hongkui,Liu Baojin,Wang Baoshan.A new way to generate seismic waves for continental crustal exploration[J].Chinese Science Bulletin,2007b,52(16):2264-2268.
Chen Yong,Li Yijing.Seismic wave radar research:using active source to detect continental crust structure[J].Journal of University of Science and Technology of China,2007c,37(8):813-819(in Chinese with English abstract).
Chen Yong,Wang Baoshan.Study on the underground structure and its changes in the shallow part of continent with an Airgun source.In:Proceedings of the Annual Meeting of the Chinese Geophysical Society.Beijing:Chinese Geophysical Society,2016(in Chinese).
Chen Yong,Wang Baoshan,Yao Huajian.Seismic airgun exploration of continental crust structures[J].Science China Earth Sciences,2017,60(10):1739-1751.
Li Xiaobin,Ye Beng,Yang Jun,Chen Meng,Jin Mingpei,Wang Baoshan.Research on comparison of excitation efficiency of air guns with various combinations in water reservoir[J].Journal of Seismological Research,2016,39(3):458-465(in Chinese with English abstract).
Liu Zifeng,Su Youjin,Wang Baoshan,Wang Bin,Yang Jun,Li Xiaobin.Study on analysis method of travel time variations of seismic wave of active source in Binchuan[J].Journal of Seismological Research,2015,38(4):591-597(in Chinese with English abstract).
Luan Yi,Yang Hongfeng,Wang Baoshan.Large volume air-gun waveform data processing(I):Binchuan,Yunnan[J].Earthquake Research in China,2016,32(2):305-318(in Chinese with English abstract).
Okaya D.,Henrys S.,Stern T.Double-sided onshore-offshore seismic imaging of a plate boundary:“supergathers”across South Island,New Zealand[J].Tectonophysics,2002,355(1/4):247-263.
Qiu Xuelin,Chen Yong,Zhu Rixiang,Xu Huilong,Shi Xiaobin,Ye Chunming,Zhao Minghui,Xia Shaohong.The application of large volume airgun sources to the onshore-offshore seismic surveys:implication of the experimental results in northern South China Sea[J].Chinese Science Bulletin,2007,52(4):553-560.
Wang Bin,Wu Guohua,Su Youjin,Wang Baoshan,Ge Hongkui,Jin Mingpei,Yang Jun,Zhang Qiming,Li Tao.Site selection and construction process of Binchuan earthquake signal transmitting seismic station and its preliminary observation result[J].Journal of Seismological Research,2015,38(1):1-6(in Chinese with English abstract).
Wang Bin,Li Xiaobin,Liu Zifeng,Yang Jun,Yang Runhai,Wang Baoshan,Yang Wei.The source and observation system of Binchuan earthquake signal transmitting seismic station and its preliminary observation results[J].Earthquake Research in China,2016,30(3):316-325.
Wang Baoshan,Zhu Ping,Chen Yong,Niu Fenglin,Wang Bin.Continuous subsurface velocity measurement with coda wave interferometry[J].Journal of Geophysical Research:Solid Earth,2008,113(B12):B12313.
Wang Baoshan,Yang Wei,Wang Weitao,Yuan Songyong,Song Lili,Ge Hongkui,Wang Bin,Wu Guohua,Su Youjin,Liu Xuejun,Jin Mingpei,Yang Jun.Un-blur the signature of large volume airgun excited in a reservoir with deconvolution.In:Proceedings of the Twenty-eighth Annual Meeting of the Chinese Geophysical Society.Beijing:Chinese Geophysical Society,2012(in Chinese).
Wang Baoshan,Ge Hongkui,Wang Bin,Wang Haitao,Zhang Yuansheng,Cai Huiteng,Chen Yong.Practices and advances in exploring the subsurface structure and its temporal evolution with repeatable artificial sources[J].Earthquake Research in China,2016,30(3):284-297.
Wang Weitao,Wang Baoshan,Ge Hongkui,Chen Yong,Yuan Songyong,Yang Wei,Li Yijin.Using active source to monitor velocity variation in shallow sediment caused by the Wenchuan earthquake[J].Earthquake Research in China,2009,25(3):223-233(in Chinese with English abstract).
Wang Weitao,Wang Baoshan,Jiang Shengmiao,Hu Jiupeng,Zhang Yuansheng.A perspective review of seismological investigation on the crust at regional scale using the active Airgun source[J].Journal of Seismological Research,2017,40(4):514-524(in Chinese with English abstract).
Wang Weitao,Wang Baoshan,Jiang Shengmiao,Hu Jiupeng,Zhang Yuansheng.Regional scale seismological investigation on the continent crust using airgun sources---A perspective review[J].Earthquake Research in China,2018,32(3):315-329.
Wei Yunyun,Wang Haitao,Su Jinbo,Chen Xiangjun,Wang Qiong.The preliminary study on travel time abnormal variation of reflection wave phase of air-gun in Xinjiang before two earthquakes with MS5.0[J].Earthquake Research in China,2016,32(2):270-281(in Chinese with English abstract).
Yang Wei,Ge Hongkui,Wang Baoshan,Yuan Songyong,Song Lili,Jia Yuhua,Li Yijin.Velocity changes observed by the precisely controlled active source for the Mianzhu MS5.6 earthquake[J].Chinese Journal of Geophysics,2010,53(5):1149-1157(in Chinese with English abstract).
Zhai Qiushi,Yao Huajian,Wang Baoshan.Study on the deconvolution method and processing flow of airgun source data[J].Earthquake Research in China,2016,30(3):394-404.
Zhang Yuansheng,Wang Baoshan,Chen Yong,Wang Lanmin,Zou Rui,Qin Manzhong,Guo Xiao,Shen Xuzhang,Wei Congxin,Liu Xuzhou,Wang Yahong,Sun Dianfeng,Guo Yingxia,Yin Liang.Travel-time variations before and after two major earthquakes derived from active-source seismic data[J].Chinese Journal of Geophysics,2017,60(10):3815-3822(in Chinese with English abstract).
Zhang Yunpeng,Li Xiaobin,Wang Weitao,Wang Weitao,Wang Baoshan,Ye Beng,Yang Jun,Wang Bin.Data service system and data quality assessment for mobile observation of transmitting seismic stations in Binchuan,Yunnan[J].Journal of Seismological Research,2017,40(4):525-533(in Chinese with English abstract).
Zhou Qingyun.Preliminary study on directivity of Binchuan air-gun source energy radiation[J].Journal of Geodesy and Geodynamics,2018,38(7):754-759(in Chinese with English abstract).
Zhou Qingyun,Chen Junlei.Influence of different triggering conditions of airgun source on travel time changes[J].Journal of Seismological Research,2018,41(2):264-272(in Chinese with English abstract).