Curvelet域海底电缆多次波压制方法研究
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摘要
将检波点置于海底的海底电缆(OBC)地震采集技术面临全体自由表面多次波的困扰。通过采用改进后的SRME方法进行OBC数据自由表面多次波的衰减,SRME方法分为预测和相减过程,在相减过程中采用常规减去法、二维Curvelet阈值相减法以及三维Curvelet阈值相减进行多次波相减。通过模型试算对3种方法进行比较,发现在Curvelet阈值相减法中,对多次波的减去效果更好,尤其是三维Curvelet变换阈值相减的效果更为突出。
The ocean bottom cable(OBC) seismic acquisition technique by putting the receiver point at the ocean is facing the problem of interference by free surface multiple wave.We use the improved SRME method to do the OBC data free surface multiple attenuation.The SRME method is divided into forecast and subtraction processes,and conventional minus,2D and 3D Curvelet threshold value subtractions are often used in subtraction process.Through the comparisons of the three methods by modeling,it is found that the Curvelet threshold subtraction,especially the 3D transform Curvelet threshold value subtraction has better result.
引文
[1]孟大江,王德利.南黄海盆地地震波传播特征分析[J].世界地质,2011,30(3):443-450.MENG Da-jiang,WANG De-li.Analysis of seismicwave propagate characteristics of the South Yellow SeaBasin[J].Global Geology,2011,30(3):443-450.
    [2]李学聪,刘伊克,常旭,等.均衡多道1范数匹配多次波衰减的方法与应用研究[J].地球物理学报,2010,53(4):963-973.LI Xue-cong,LIU Yi-ke,CHANG Xu,et al.The adap-tive subtraction of multiple using the equipoise multichan-nel L1-norm matching[J].Chinese Journal of Geophys-ic,2010,53(4):963-973.
    [3]Dragoset W,Barr F J.Ocean-bottom cable dual-sensorscaling[C]//64th Ann Internat Mtg Soc Expl Geo-phys,Expanded Abstracts,1994:857-860.
    [4]Verschuur D J,Neumann E I.Integration of OBS dataand surface data for OBS multiple removal[C]//69thAnn Internat Mtg Expi Geophys,Expanded Abstracts,1999:1350-1353.
    [5]Ikelle L T.Combining two seismic experiments to attenu-ate free-surface multiples in OBC data[J].GeophysicalProspecting,1999,47(2):179-193.
    [6]Ikelle L T.Using even terms of the scattering series fordeghosting and multiple attenuation of ocean-bottom cabledata[J].Geophysics,1999,64(2):579-592.
    [7]马继涛,Mrinal S K,陈小宏,等.海底电缆多次波压制方法研究[J].地球物理学报,2011,54(11):2960-2966.MA Ji-tao,Mrinal S K,CHEN Xiao-hong,et al.OBCmultiple attenunation technique using SRME theory[J].Chinese Journal of Geophysic,2011,54(11):2960-2966.
    [8]赵悦伊,刘洋,刘财,等.差异散射多次波自适应消减法研究[J].世界地质,2012,31(2):399-405.ZHAO Yue-yi,LIU Yang,LIU Cai,et al.Research onadaptive subtraction of different diffractive multiple wave[J].Global Geology,2012,31(2):399-405.
    [9]Verschuur D J,Berkhout A J.Estimation of multiplescattering by iterative inversion,Part II:practical aspectsand examples[J].Geophysics,1997,62(5):1596-1611.
    [10]Candès E,Donoho D.Curvelets:a surprisingly effec-tive nonadaptive representation of objects with edges[M].TN:Vanderbilt University Press,1999.
    [11]Candès E,Demanet L,Donoho D,et al.Fast discretecurvelet transforms[J].SIAM Multiscale Modeling andSimulation,2006,5(3):861-899.
    [12]Lexing Ying,Demanet L,Candès E.3D discrete curve-let transform[J].Applied and Computational Mathe-matics,2006:6-8.
    [13]Felix J H,Wang D L,Verschuur D J.Adaptive curve-let-domain primary-multiple separation[J].Geophys-ics,2008,73(3):17-21.
    [14]王德利,党丹,刘伟明,等.CFP技术层间多次波预测及Curvelet域相减方法[J].吉林大学学报:地球科学版,2011,41(3):908-914.WANG De-li,DANG Dan,LIU Wei-ming,et al.In-ternal multiple prediction based on CFP approach andCurvelet domain subtraction[J].Journal of Jilin Uni-versity:Earth Science Edition,2011,41(3):908-914.
    [15]仝中飞,王德利,刘冰.基于Curvelet变换阈值法的地震数据去方法[J].吉林大学学报:地球科学版,2008,38(增刊):48-52.TONG Zhong-fei,WANG De-li,LIU Bing.Seismicdata denoise based on Curvelet transform with the thresh-old method[J].Journal of Jilin University:Earth Sci-ence Edition,2008,38(Suppl.):48-52.

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