A Comparative Study on the Excitation of Large Volume Airgun Source with Different Combinations in Hutubi, Xinjiang, China |
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| Authors: | SU Jinbo WANG Qiong CHEN Hao WEI Yunyun ZHANG Wenxiu and WANG Haitao |
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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,The First Monitoring and Application Center, CEA, Tianjin 300180, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China and China Earthquake Networks Center, Beijing 100045, China |
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| Abstract: | In order to study the excitation of large-volume airgun source with different combinations in Hutubi, Xinjiang,China,we conducted a targeted experiment. The method of time-frequency analysis is used to study the signals recorded by a seismometer on the shore of the excited pool, and it is concluded that different gun combinations will lead to different frequency of bubble pulse signals. Besides, linear combination method is used to analyze the signal-to-noise ratios of signals excited by different gun combinations which was recorded by seismic stations around the airgun source. In order to improve the signal-to-noise ratios, it is more effective to increase the activation energy (the number of excited guns at the same time) than to stack the excited signals with smaller energy repeatedly. |
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| Keywords: | Airgun source Different gun combinations Energy characteristic Frequency characteristic Signal-to-noise ratio |
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