Deghosting towed streamer data in tau/p domain based on rough sea surface reflectivity

作者：Zhang Xing-Yan; Pan Dong-Ming; Shi Wen-Ying; Fang Zhong-Yu^*; Dan Zhi-Wei; Zhang Li-Xia

来源：Applied Geophysics, 2015, 12(4): 573-584.

DOI：10.1007/s11770-015-0521-1

• deghosting
• t/p transform
• submarine tow cable
• sea surface
• reflection coefficient

Currently, the deghosting of towed streamer seismic data assumes a flat sea level and a sea-surface reflection coefficient of -1; this decreases the precision of deghosting. A new method that considers the rough sea surface is proposed to suppress ghost reflections. The proposed deghosting method obtains the rough sea surface reflection coefficient using Gaussian statistics, and calculates the optimized deghosting operator in the tau/p domain. The proposed method is closer to the actual sea conditions, offers an improved deghosting operator, removes the ghost reflections from marine towed seismic data, widens the bandwidth and restores the low-frequency information, and finally improves the signal-tonoise ratio and resolution of the seismic data.

• 出版日期2015-12
• 单位中国矿业大学（北京）