利用多种面波数据研究沙漠区表层结构(英文)
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摘要
浅层面波法调查表层速度结构多用于非沙漠区的工程与环境领域。本文利用多道面波分析(MASW)技术针对塔克拉玛干沙漠地区特殊地质情况,对所采集的浅层多道面波资料进行处理分析得到沙漠区表层速度结构;同时对该地区所获得的地震大炮记录上的面波进行了处理、分析和对比,探讨了沙漠区利用大炮面波法调查表层结构的可行性。实践表明,多道面波资料可以得到很好的浅层速度结构,而大炮记录则可得到详尽的深层地质结构,将二者相结合便得到测区表层60m范围内的速度结构信息,也证明了在沙漠区利用大炮面波记录提取表层地下介质结构是可行的。
Shallow surface wave methods are mostly used for investigation of the surface velocity structure in environmental and engineering geophysics in non-desert areas. For the special geological features of the Takelamagan Desert area, we use the multi-channel analysis of surface wave (MASW) method to process multi-channel shallow surface wave records to determine the near surface velocity structure in the desert area. We also process, analyze, and compare the surface waves in many-trace records extracted from the oil exploration shot gathers in the area. We show that the MASW method can determine detailed shallow velocity structure in desert areas and the many-trace records can be used to get detailed deep geological structure. The combination of the two different datasets can obtain the exact velocity structure upper 60 m depth in the survey area.
Shallow surface wave methods are mostly used for investigation of the surface velocity structure in environmental and engineering geophysics in non-desert areas. For the special geological features of the Takelamagan Desert area, we use the multi-channel analysis of surface wave (MASW) method to process multi-channel shallow surface wave records to determine the near surface velocity structure in the desert area. We also process, analyze, and compare the surface waves in many-trace records extracted from the oil exploration shot gathers in the area. We show that the MASW method can determine detailed shallow velocity structure in desert areas and the many-trace records can be used to get detailed deep geological structure. The combination of the two different datasets can obtain the exact velocity structure upper 60 m depth in the survey area.
引文
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Cheng S., Tian G., Xia J., and He H., 2004, Investigation of the low-velocity layers in desert area by multichannel analysis of surface-wave method: Proceedings of the International Conference on Environmental and Engineering Geophysics, Wuhan, China.
Cheng S., Tian G., Xia J.H., He H.Y., and Shi Z.J., 2005, Application of multichannel analysis of surface wave method in investigation of low velocity layer in the desert area: Journal of Jilin University (Earth Sicence Edition)(in Chinese), 35(1), 113-117.
Miller, R.D., Xia, J., Park, C.B., Shefchik, W.T., and Burns, L.M., 1999a, Seismic techniques to delineate dissolution features in the upper 1000 ft at a power plant: 69th Ann. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 492 -495.
Miller, R.D., Xia, J., Park, C.B., and Ivanov, J., 1999b, Multichannel analysis of surface waves to map bedrock: The Leading Edge, 18(12), 1392 - 1396.
Min, D.J., and Kim, H.S., 2006, Feasibility of the surface -wave method for the assessment of physical properties of a dam using numerical analysis: Journal of Applied Geophysics, 59(3), 236 - 242.
Nazarians, S., Stokoe, II., K.H., and Hudson, W..R., 1983, Use of spectral analysis of surface waves for determination of moduli and thickness of pavement system: Transportation Research Record, 930, 38-45.
Park, C.B., Miller, R.D., and Xia, J., 1999, Multi-channel analysis of surface waves (MASW): Geophysics, 64(3), 800 - 808.
Tian, G., Shi, Z., Steeples, D.W., and Xia, J., 2003a, The MASW method used in soil compaction study: Progress in Geophysics (in Chinese), 18 (3), 450 - 454.
Tian, G., Steeples, D.W., Xia, J., Miller, R.D., Spikes, K. T., and Ralston, M.D., 2003 b, Multichannel analysis of surface waves with the Autojuggie: Soil Dynamics and Earthquake Engineering, 23 (3), 243 - 247.
Wang, Z.G., and Zhou, X.R., 2004, Discussing again about possibility using Rayleigh wave for investigation of near-surface structure: Oil Geophysical Prospecting (in Chinese), 39 (5), 505 - 508, 538.
Xia, J., Miller, R.D., and Park, C.B., 1997, Estimation of shear wave velocity in a compressible Gibson half-space by inverting Rayleigh wave phase velocity: 67th Ann. Mtg., Soc. Expl. Geophys., Expanded Abstracts,1917 -1920.
Xia, J., Miller, R.D., and Park, C.B., 1999, Estimation of near-surface shear-wave velocity by inversion of Rayleigh waves: Geophysics, 64 (3), 691 - 700.
Xia, J., Miller, R.D., Park, C.B., Hunter, J.A., Harris, J.B., and Ivanov, J., 2002, Comparing shear-wave velocity profiles from multichannel analysis of surface wave with borehole measurements: Soil Dynamics and Earthquake Eng., 22(3), 181-190.
Xia, J., Chen, C, Li, P.H., and Lewis, M.J., 2004, Delineation of a collapse feature in a noising environment using a multichannel surface wave technique: Geotech-nique, 54(1), 17-27.
Xu, C.Q., and Stephen, D.B., 2006, Evaluation of MASW techniques to image steeply dipping cavities in laterally inhomogeneous terrain: Journal of Applied Geophysics, 59(2), 106-116.
Zeng X.F., Qian R.Y., Deng X.S., and Lin W.S., 2001, Rayleigh wave exploration and its application in investigation of surface geological structure in desert area: Modern Geology (Journal of Graduate School (in Chinese), China Univesity of Geosciences), 15 (1), 94 - 97.
Zeng, X.F., Qian R.Y., Deng X.S., Chen, Z.S., Xiao D.X., Liu S.W., and Heng Y.P., 2001, The extraction of surface wave information from the record of oil-gas reflection wave seismic exploration: Geophysical & Geochemical Exploration (in Chinese), 25 (6), 443 - 446.
Zhou. X.R., and Wang, Z.G., 2004, Discussion on feasibility of using Rayleigh wave to investigate near-surface structure: Oil Geophysical Prospecting (in Chinese), 39 (2), 66-71.
Cheng S., Tian G., Xia J., and He H., 2004, Investigation of the low-velocity layers in desert area by multichannel analysis of surface-wave method: Proceedings of the International Conference on Environmental and Engineering Geophysics, Wuhan, China.
Cheng S., Tian G., Xia J.H., He H.Y., and Shi Z.J., 2005, Application of multichannel analysis of surface wave method in investigation of low velocity layer in the desert area: Journal of Jilin University (Earth Sicence Edition)(in Chinese), 35(1), 113-117.
Miller, R.D., Xia, J., Park, C.B., Shefchik, W.T., and Burns, L.M., 1999a, Seismic techniques to delineate dissolution features in the upper 1000 ft at a power plant: 69th Ann. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 492 -495.
Miller, R.D., Xia, J., Park, C.B., and Ivanov, J., 1999b, Multichannel analysis of surface waves to map bedrock: The Leading Edge, 18(12), 1392 - 1396.
Min, D.J., and Kim, H.S., 2006, Feasibility of the surface -wave method for the assessment of physical properties of a dam using numerical analysis: Journal of Applied Geophysics, 59(3), 236 - 242.
Nazarians, S., Stokoe, II., K.H., and Hudson, W..R., 1983, Use of spectral analysis of surface waves for determination of moduli and thickness of pavement system: Transportation Research Record, 930, 38-45.
Park, C.B., Miller, R.D., and Xia, J., 1999, Multi-channel analysis of surface waves (MASW): Geophysics, 64(3), 800 - 808.
Tian, G., Shi, Z., Steeples, D.W., and Xia, J., 2003a, The MASW method used in soil compaction study: Progress in Geophysics (in Chinese), 18 (3), 450 - 454.
Tian, G., Steeples, D.W., Xia, J., Miller, R.D., Spikes, K. T., and Ralston, M.D., 2003 b, Multichannel analysis of surface waves with the Autojuggie: Soil Dynamics and Earthquake Engineering, 23 (3), 243 - 247.
Wang, Z.G., and Zhou, X.R., 2004, Discussing again about possibility using Rayleigh wave for investigation of near-surface structure: Oil Geophysical Prospecting (in Chinese), 39 (5), 505 - 508, 538.
Xia, J., Miller, R.D., and Park, C.B., 1997, Estimation of shear wave velocity in a compressible Gibson half-space by inverting Rayleigh wave phase velocity: 67th Ann. Mtg., Soc. Expl. Geophys., Expanded Abstracts,1917 -1920.
Xia, J., Miller, R.D., and Park, C.B., 1999, Estimation of near-surface shear-wave velocity by inversion of Rayleigh waves: Geophysics, 64 (3), 691 - 700.
Xia, J., Miller, R.D., Park, C.B., Hunter, J.A., Harris, J.B., and Ivanov, J., 2002, Comparing shear-wave velocity profiles from multichannel analysis of surface wave with borehole measurements: Soil Dynamics and Earthquake Eng., 22(3), 181-190.
Xia, J., Chen, C, Li, P.H., and Lewis, M.J., 2004, Delineation of a collapse feature in a noising environment using a multichannel surface wave technique: Geotech-nique, 54(1), 17-27.
Xu, C.Q., and Stephen, D.B., 2006, Evaluation of MASW techniques to image steeply dipping cavities in laterally inhomogeneous terrain: Journal of Applied Geophysics, 59(2), 106-116.
Zeng X.F., Qian R.Y., Deng X.S., and Lin W.S., 2001, Rayleigh wave exploration and its application in investigation of surface geological structure in desert area: Modern Geology (Journal of Graduate School (in Chinese), China Univesity of Geosciences), 15 (1), 94 - 97.
Zeng, X.F., Qian R.Y., Deng X.S., Chen, Z.S., Xiao D.X., Liu S.W., and Heng Y.P., 2001, The extraction of surface wave information from the record of oil-gas reflection wave seismic exploration: Geophysical & Geochemical Exploration (in Chinese), 25 (6), 443 - 446.
Zhou. X.R., and Wang, Z.G., 2004, Discussion on feasibility of using Rayleigh wave to investigate near-surface structure: Oil Geophysical Prospecting (in Chinese), 39 (2), 66-71.
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