摘要
对西南海海槽的NT6 2 - 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 .
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.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第6期799-804,共6页
Chinese Journal of Geophysics
基金
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
