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切換: 標籤 | MARC模式 | ISBD

Imaging of converted-wave ocean-bott...

Rosales Roche, Daniel Alejandro.

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Imaging of converted-wave ocean-bottom seismic data.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Imaging of converted-wave ocean-bottom seismic data./
作者:	Rosales Roche, Daniel Alejandro.
面頁冊數:	122 p.
附註:	Adviser: Biondo L. Biondi.
Contained By:	Dissertation Abstracts International67-11B.
標題:	Geophysics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3242611
ISBN:	9780542984334

Imaging of converted-wave ocean-bottom seismic data.
Rosales Roche, Daniel Alejandro.

Imaging of converted-wave ocean-bottom seismic data. - 122 p.

Adviser: Biondo L. Biondi.

Thesis (Ph.D.)--Stanford University, 2007.

Converted-wave data can be imaged with several methodologies. The transformation of data into the image space, is defined by an imaging operator, the simplest of which is normal moveout correction plus stack. Most of the converted-wave processing is carried out in the data domain, that is in time, data midpoint location, and data offset, this processing is not ideal for this type of seismic data. The processing should be carried out in the image domain, that is the one composed of depth, image midpoint location and image subsurface offset.

ISBN: 9780542984334Subjects--Topical Terms:

535228
Geophysics.

Imaging of converted-wave ocean-bottom seismic data.
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520 $a Converted-wave data can be imaged with several methodologies. The transformation of data into the image space, is defined by an imaging operator, the simplest of which is normal moveout correction plus stack. Most of the converted-wave processing is carried out in the data domain, that is in time, data midpoint location, and data offset, this processing is not ideal for this type of seismic data. The processing should be carried out in the image domain, that is the one composed of depth, image midpoint location and image subsurface offset.
520 $a Different processing techniques are created for an accurate image of converted wave seismic data. First, in 2-D Ocean-Bottom Seismic (OBC), the image space for converted-wave data is defined in the angle domain to form converted-wave angle-domain common-image gathers (PS-ADCIGs). The PS-ADCIGs can also be mapped into two complementary ADCIGs, the first one is function only of the P-incidence angle, the second ADCIG is function of the S-reflection angle. The method to obtain PS-ADCIGs is independent of the migration algorithm implemented, as long as the migration algorithm is based on wavefield downward-continuation, and the final prestack image is a function of the horizontal subsurface offset.
520 $a The final process is done for 3-D seismic data, the creation of the converted-wave azimuth moveout operator (PS-AMO) and the converted-wave common-azimuth migration (PS-CAM) allows the definition and accurate image of 3-D prestack ocean-bottom seismic data.
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