Interferometric/daylight seismic imaging
Interferometric/daylight seismic imaging
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DOI：
10.1111/j.1365-246x.2004.02251.x
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发表时间：
2004-05
影响因子：
2.8
通讯作者：
G. Schuster;Jianhua Yu;J. Sheng;J. Rickett
中科院分区：
文献类型：
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作者：
G. Schuster;Jianhua Yu;J. Sheng;J. Rickett
Claerbout的日光成像概念被推广到干涉地震成像理论（II）。干涉地震成像被定义为将相关地震数据反演为反射率或源分布的任何算法。作为例子，我们表明，II可以成像反射率分布的迁移鬼反射在被动地震数据和推广的接收函数成像方法所使用的地震学家。干涉地震成像还可以偏移共深度点（CDP）数据中的自由表面多次波，并从被动地震数据中成像震源分布。合成和现场数据的例子来说明不同的可能性II。II的主要优点是，它可以从源位置或子波未知的被动地震数据中成像源位置或反射率分布。在某些情况下，它可以减轻由于静校正或不正确的偏移速度而引起的散焦误差。与II的主要缺点是，严重的偏移伪影可以创建虚拟多次波的部分聚焦。
SUMMARY Claerbout’s daylight imaging concept is generalized to a theory of interferometric seismic imaging (II). Interferometric seismic imaging is defined to be any algorithm that inverts correlated seismic data for the reflectivity or source distribution. As examples, we show that II can image reflectivity distributions by migrating ghost reflections in passive seismic data and generalizes the receiver-function imaging method used by seismologists. Interferometric seismic imaging can also migrate free-surface multiples in common depth point (CDP) data and image source distributions from passive seismic data. Both synthetic and field data examples are used to illustrate the different possibilities of II. The key advantage of II is that it can image source locations or reflectivity distributions from passive seismic data where the source position or wavelet is unknown. In some cases it can mitigate defocusing errors as a result of statics or an incorrect migration velocity. The main drawback with II is that severe migration artefacts can be created by partial focusing of virtual multiples.