南海天然气水合物地震资料处理及其特征

以中国首次在南海北部某海区采集的以探测天然气水合物为目的的超过500km的多道高分辨率地震调查数据为基础，利用真振幅处理，子波处理，速度分析，叠前偏移处理以及地震属性道处理等多种针对天然气水合物的先进处理技术和方法，有效地寻找天然气水合物的存在标地，如似海底反射（BSR），振幅空白，极性反转，异常速度等，证实南海北部存在天然气水合物，并具有独特的地震反射特征。

SEISMIC DATA PROCESSING AND CHARACTERISTICS FOR GAS HYDRATES IN SOUTH C HINA SEA

The seismic data processing and the seismic feature identification for gas hydrates are very significant for the primary exploration and researches on gas hydrates.On the basis of the high resolution seismic data in South China Sea,the first collected data for gas hydrates survey in China,this paper searches for the seismic evidence and analyzes their features to indicate the existence of gas hydrates,such as bottom simulating reflectors(BSRs),amplitude blanking,polarity reversal and high velocity anomaly in the profiles,by using a series of data processing methods and approaches,such as true amplitude processing,wavelet processing,velocity analysis,pre stack migration processing,and seismic attribute trace processing.