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《Chinese Journal of Geophysics》 2005-03
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Generation of null in Rg wave by underground explosions

HE Yong-Feng 1,2, CHEN Xiao-Fei 1, HE Yao-Feng, JIN Ping 2 1 Computational Geophysical Laboratory, Department of Geophysics, Peking University, Beijing 100871, China 2 North-west Institute of Nuclear Technology, Xi′an 710024, China  
It is widely accepted that the near-source scattering of explosion-generated Rg into S is the primary contributor to the low-frequency Lg from nuclear explosions, because the prominent low-frequency spectral null in Lg coincides with that in Rg from a compensated linear vector dipole (CLVD) source. In this study, the mechanism of the excitation of the spectral null of Rg generated by the CLVD source is analyzed in detail with the normal mode method. The most important result in this study is that the spectral null is due to a combination of displacement eigenfunction and its derivative of the fundamental-mode Rayleigh wave controlled by CLVD source, not only the zero-crossing can fully explain the excitation of the spectral null.
【Fund】: 国家自然科学基金项目 (4 0 13 40 10 )资助
【CateGory Index】: TL91
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【References】
Chinese Journal Full-text Database 3 Hits
1 HE Yong-feng~1,ZHAO Ke-chang~2,ZHANG Xian-bing~2, CHEN Xiao-fei~2, JIN Ping~3(1.Academy of Armored Forces Engineering,Beijing 100072,China;2.School of Earth and Space Science,Peking University,Beijing 100871,China;North-west Institute of Nuclear Technology,Xi'an 710024,China);Pn geometric spreading in the upper mantle with linear velocity gradient[J];Progress in Geophysics;2006-04
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3 LIU Dai-Zhi~1,ZHANG Bin~1,LI Xi-Hai~1,ZHAO Ke~21 Section 602,the Second Artillery Engineering Institute,Xi'an 710025,China2 High Technology Insitutte of the Second Artillery,Beijing 100085,China;On the feature phase space in the seismic pattern recognition of underground nuclear explosions[J];Chinese Journal of Geophysics;2006-03
China Proceedings of conference Full-text Database 1 Hits
1 LIU Dai-zhi(The Second Artillery Institute of Engineering , Xi’an 710025, China);A number of research directions in geophysics for national security[A];[C];2007
【Citations】
Chinese Journal Full-text Database 1 Hits
1 HE Yong-Feng 1, 2 , CHEN Xiao-Fei 1, ZHANG Hai-Ming 1 1 School of Earth & Space Sciences, Peking University, Beijing 100871, China 2 Northwest Institute of Nuclear Technology, Xi'an 710024, China;The excitation of Lg wave by underground nuclear explosions[J];Chinese Journal of Geophysics;2005-02
【Co-citations】
Chinese Journal Full-text Database 2 Hits
1 LIU Dai-zhi(The Second Artillery Institute of Engineering,Xi'an 710025,China);A number of research directions in geophysics for national security[J];Progress in Geophysics;2007-04
2 LIU Dai-Zhi~1,ZHANG Bin~1,LI Xi-Hai~1,ZHAO Ke~21 Section 602,the Second Artillery Engineering Institute,Xi'an 710025,China2 High Technology Insitutte of the Second Artillery,Beijing 100085,China;On the feature phase space in the seismic pattern recognition of underground nuclear explosions[J];Chinese Journal of Geophysics;2006-03
China Proceedings of conference Full-text Database 1 Hits
1 LIU Dai-zhi(The Second Artillery Institute of Engineering , Xi’an 710025, China);A number of research directions in geophysics for national security[A];[C];2007
【Co-references】
Chinese Journal Full-text Database 10 Hits
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3 ZHANG Wei-min, WANG Yong, ZHAN Jin-gang, HAO Xin-hua (Institute of Geodesy and Geophysics dynamic geodesy center experiment station, Chinese Academy of Sciences, Wuhan 430077, China);High accuracy absolute gravity observation in Chinese mainland during 1996—2003[J];Progress In Geophysics;2005-01
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9 XU Zun-yi1,2,YAN Lei2,NING Shu-nian1,ZOU Hua-sheng1(1.China University of Mining & Technology(Beijing),Beijing 100083,China;2.Beijing Key Lab of Spatial Information Integration and Its Applications,Peking University,Beijing 100871,China);Situation and development of marine gravity aided navigation system[J];Progress in Geophysics;2007-01
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【Secondary References】
Chinese Journal Full-text Database 3 Hits
1 LIU Dai-zhi(The Second Artillery Institute of Engineering,Xi'an 710025,China);A number of research directions in geophysics for national security[J];Progress in Geophysics;2007-04
2 HAO Chun-yue,HE Dong-mei,ZHANG Shuang,ZHENG Zhong,ZHANG Bo-ming(Institute of Geophysics,China Earthquake administration,Beijing 100081,China);Methods of array seismology and its application in China IMS array[J];Progress in Geophysics;2008-03
3 ZHANG Wei-min1,HAO Xiao-guang1,2,GUO You-guang2,SHI Wen-tao3,WANG Hu-biao1,2,ZHAN Jin-gang1,2(1.Institute of geodesy and geophysics of CAS,Wuhan 430077,China;2.Key laboratory of Dynamical Geodesy of CAS,Wuhan 430077,China;3.Institute of Seismology of CEA,Wuhan 430071,China);Experimental research of some noise factors to the development of absolute gravimeter[J];Progress in Geophysics;2008-04
China Proceedings of conference Full-text Database 1 Hits
1 LIU Dai-zhi(The Second Artillery Institute of Engineering , Xi’an 710025, China);A number of research directions in geophysics for national security[A];[C];2007
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