| 西南海海槽地震资料处理及其似海底反射层特征 |
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| 引用本文： | 宋海斌,松林修,仓本真一. 西南海海槽地震资料处理及其似海底反射层特征[J]. 地球物理学报, 2001, 44(6): 799-804 |
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| 作者姓名： | 宋海斌 松林修 仓本真一 |
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| 作者单位： | 1. 中国科学院地质与地球物理研究所,北京,100101;2. 日本地质调查所,筑波,3058567 |
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| 基金项目： | STA Fellowship，国家自然科学基金 ( 4 990 4 0 0 7)，中国科学院全国优秀博士学位论文专项资金 |
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| 摘 要： | 对西南海海槽的NT2-2地震测线进行了重新处理,突出了天然气水合物似海底反射层(BSR)的特征.比较了近炮检距剖面、叠加剖面、偏移剖面、瞬时振幅剖面与瞬时相位剖面上BSR的显示特征.指出了BSR在炮道集与共中心点道集上的分布.虽然在近炮检距剖面上能分辨部分BSR,但通过叠加与偏移可以得到BSR较清晰的图像.BSR的高振幅特征在瞬时振幅剖面上最为明显,而在瞬时相位剖面上容易勾画BSR的横向展布.
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| 关 键 词： | 天然气水合物 西南海海槽 似海底反射层 地震处理 |
| 文章编号： | 0001-5733(2001)06-0799-06 |
| 收稿时间： | 2001-03-22 |
PROCESSING OF SEISMIC DATA OF WESTERN NANKAI TROUGH AND ITS CHARACTER BOTTOM SIMULATING REFLECTOR |
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| SONG HAI BIN ,) MATSUBAYASHI OSAMU ) KURAMOT SHIN'ICHI ) ) Institute of Geology and Geophysics,CAS,Beijing ,China ) Geological Survey of Japan,Tsukuba ,Japan. PROCESSING OF SEISMIC DATA OF WESTERN NANKAI TROUGH AND ITS CHARACTER BOTTOM SIMULATING REFLECTOR[J]. Chinese Journal of Geophysics, 2001, 44(6): 799-804 |
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| Authors: | SONG HAI BIN ) MATSUBAYASHI OSAMU ) KURAMOT SHIN'ICHI ) ) Institute of Geology Geophysics CAS Beijing China ) Geological Survey of Japan Tsukuba Japan |
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| Affiliation: | 1. Institute of Geology and Geophysics, CAS, Beijing 100101, China;2. Geological Survey of Japan, Tsukuba 3058567, Japan |
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| Abstract: | The data of NT62-2 seismic line of western Nankai Trough are reprocessed, and the character of the distribution of Bottom simulating reflector (BSR) is emphasized. The appearances of BSRs oon near offset profile, stacked profile, migration profile, migration profile, instantaneous amplitude profile and instantaneous phase profile are compared and described. They are also distinguished in shot gathers and CMP gathers. Although there are some evidence of BSRs on near offset profile, better images of BSRs can be obtained by stack and migration. Character of strong amplitude of BSRs can be easily seen on instantaneous amplitude profile. And they are clearly mapped on instantaneous phase profile. |
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| Keywords: | Gas hydrates Western Nankai Trough Bottom simulating reflectors Seismic data processing. |
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