Where do P-S conversions occur? Analysis of OBS-data from the NE Atlantic Margin

R. Mjelde; J. P. Fjellanger; T. Raum; P. Digranes; S. Kodaira; A. Breivik; H. Shimamura

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Where do P-S conversions occur? Analysis of OBS-data from the NE Atlantic Margin

机译：P-S转换在哪里发生？来自东北大西洋边缘的OBS数据分析

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The vast majority of seismic surveys on the Norwegian continental shelf have been performed using a towed streamer. The reason for this method's dominance is its efficiency in 2D and 3D mapping of sedimentary structures of importance in the exploration for hydrocarbons. It is, however, curious that the first seismic surveys performed on the Norwegian continental shelf were conducted in 1962 using multicomponent geophones placed on the sea-floor (Hirschleber et al. 1966). Today, this is state-of-the-art in seismic exploration. During the last decade there has been a steady increase in interest in multicomponent ocean-bottom seismograph (OBS) surveys, and during the last 5 years there has been an even greater increase in interest in marine multicomponent reflection surveys (marine 4C). For both types of survey we use conventional marine seismic sources, but the multicomponent sensors, the way the sensors are handled and the acquisition geometry, are very different in the two methods. OBS surveys are characterized by a coarse receiver grid and coarse shooting over a large offset range. A typical receiver distance is 5-30 km and a typical offset range is from zero to several hundred kilometres. The sensors are dropped from the sea-surface to the sea-floor.

机译：挪威大陆架上的绝大多数地震勘探都是使用拖缆进行的。该方法之所以占主导地位，是因为其在沉积结构的2D和3D绘图中的效率非常重要，而这些沉积结构在油气勘探中很重要。然而，令人感到奇怪的是，在1962年挪威第一大地震勘探是使用放置在海底的多分量检波器进行的（Hirschleber等，1966）。今天，这是地震勘探领域的最新技术。在过去的十年中，对多组分海底地震仪（OBS）勘测的兴趣一直在稳定增长，并且在过去的五年中，对海洋多组分反射法勘测（4C海洋）的兴趣甚至更大。对于这两种类型的调查，我们都使用常规的海洋地震源，但是在这两种方法中，多分量传感器，传感器的处理方式和采集几何形状都非常不同。 OBS测量的特点是接收器网格粗，偏移范围大，射击粗。典型的接收器距离是5-30 km，典型的偏移范围是从零到几百公里。传感器从海面掉落到海底。

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《First Break》 |2002年第3期|共8页
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R. Mjelde; J. P. Fjellanger; T. Raum; P. Digranes; S. Kodaira; A. Breivik; H. Shimamura;
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1. Where do P-S conversions occur? Analysis of OBS-data from the NE Atlantic Margin [J] . R. Mjelde, J. P. Fjellanger, T. Raum, First Break . 2002,第3期

机译：P-S转换在哪里发生？来自东北大西洋边缘的OBS数据分析
2. Acquisition, processing and analysis of densely sampled P-and S-wave OBS-data on the mid-Norwegian margin, NE atlantic [J] . Rolf Mjelde, Tommy Timenes, Hideki Shimamura, Earth, planets and space: EPS . 2002,第12期

机译：在挪威中部大西洋东北缘密集采样的P波和S波OBS数据的采集，处理和分析
3. Three-component OBS-data processing for lithology and fluid prediction in the mid-Norway margin, NE Atlantic [J] . Eivind Berg, Lasse Amundsen, Andrew Morton, Earth, planets and space: EPS . 2001,第2期

机译：用于大西洋中北部大西洋中部岩性和流体预测的三成分OBS数据处理
4. Regional Investigations and Hydrocarbon Exploration History of the South Atlantic Rifted Continental Margins: Development of the Salt Basins and Transform Margin Basins Without Salt [C] . Fainstein Roberto, MohriakWebster U. GCSSEPM Foundation Bob F Perkins Research Conference . 2016

机译：区域调查和南大西洋大陆边缘的探索史：盐池的发展和无盐的变换边缘盆地
5. Spatiotemporal relationships between earthquakes of the mid-Atlantic Ridge and the Atlantic continental margins. [D] . Bolarinwa, Oluwaseyi J. 2015

机译：大西洋中脊地震与大西洋大陆边缘之间的时空关系。
6. Analysis of mouse major urinary protein genes: variation between the exonic sequences of group 1 genes and a comparison with an active gene out with group 1 both suggest that gene conversion has occurred between MUP genes. [O] . A J Clark, A Chave-Cox, X Ma, 1985

机译：小鼠主要尿蛋白基因分析：第1组基因的外显子序列之间的变异以及与第1组外的活跃基因的比较均表明MUP基因之间已经发生了基因转化。
7. Acquisition, processing and analysis of densely sampled P- and S-wave OBS-data on the mid-Norwegian Margin, NE Atlantic [O] . Rolf Mjelde, Tommy Timenes, Hideki Shimamura, 2014

机译：在大西洋中部挪威中缘上密集采样的P波和S波OBS数据的采集，处理和分析
8. Data File: Sediments of the East Atlantic Continental Margin Northwest Africa: Sample Collection and Analysis [R] . Briggs, S. R. , Summerhayes, C. P. , Milliman, J. D. 1976

机译：数据文件：东北大西洋大陆边缘沉积物：西北非洲：样品采集和分析

Where do P-S conversions occur? Analysis of OBS-data from the NE Atlantic Margin

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