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Regional Scale Seismological Investigation on the Continent Crust Using Airgun Sources—A Perspective Review
Wang Weitao,Wang Baoshan,Jiang Shengmiao,Hu Jiupeng,Zhang Yuansheng
Author NameAffiliation
Wang Weitao Key Laboratory of Seismic Observation and Geophysical Imaging, Institute of Geophysics, CEA, Beijing 100081, China 
Wang Baoshan Key Laboratory of Seismic Observation and Geophysical Imaging, Institute of Geophysics, CEA, Beijing 100081, China 
Jiang Shengmiao Key Laboratory of Seismic Observation and Geophysical Imaging, Institute of Geophysics, CEA, Beijing 100081, China 
Hu Jiupeng Key Laboratory of Seismic Observation and Geophysical Imaging, Institute of Geophysics, CEA, Beijing 100081, China 
Zhang Yuansheng Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China 
摘要:
The investigations on the structure and temporal variations of the continent crust have been the long-lasting topics of seismology. The artificial sources play the most important role in these studies for their well-known locations and occur times among all the sources producing elastic waves, so that precise results are obtained. In past decades, we have successfully excited the airgun sources in on-land water bodies such as reservoirs, expanding their applications in marine seismology. Large volume airguns have been used to produce low frequency signals which can travel hundreds of kilometers after stacking, providing a source connecting the exploration seismology and traditional seismology at regional scale. In this review, we introduce the changes through which we turn the airgun into scientific instruments by experiments. We also present the advances on imaging the continental crust structure and monitoring the velocity variations using the highly repeatable signals emitted by airgun sources. The potential applications such as imaging the subsurface of urban areas and high resolution illuminating of mines are proposed and the challenges for further investigations are also discussed.
关键词:  Airgun Sources  Crust velocity structure  Monitoring velocity variations
DOI:
分类号:
基金项目:This research was supported by the National Natural Science Foundation of China (41674061, 41790463 and 41674058).
Regional Scale Seismological Investigation on the Continent Crust Using Airgun Sources—A Perspective Review
Wang Weitao,Wang Baoshan,Jiang Shengmiao,Hu Jiupeng,Zhang Yuansheng
Abstract:
The investigations on the structure and temporal variations of the continent crust have been the long-lasting topics of seismology. The artificial sources play the most important role in these studies for their well-known locations and occur times among all the sources producing elastic waves, so that precise results are obtained. In past decades, we have successfully excited the airgun sources in on-land water bodies such as reservoirs, expanding their applications in marine seismology. Large volume airguns have been used to produce low frequency signals which can travel hundreds of kilometers after stacking, providing a source connecting the exploration seismology and traditional seismology at regional scale. In this review, we introduce the changes through which we turn the airgun into scientific instruments by experiments. We also present the advances on imaging the continental crust structure and monitoring the velocity variations using the highly repeatable signals emitted by airgun sources. The potential applications such as imaging the subsurface of urban areas and high resolution illuminating of mines are proposed and the challenges for further investigations are also discussed.
Key words:  Airgun Sources  Crust velocity structure  Monitoring velocity variations