摘要
在海上地球物理调查中,为了查明该海区的浅部地层结构和分布规律,浅地层剖面测量是一种不可缺少的重要的手段;然而,海上数据采集过程通常会受到各种因素干扰,导致获得的浅剖资料噪声严重。其主频虽然较高,但信噪比较低,以致于在原始剖面中无法有效地识别地层。以辽河三角洲资料为例,针对剖面上存在的各种噪声类型,提出一些用于浅地层剖面资料处理的关键技术,以提高原始资料信噪比及分辨率为目的,为海洋地质构造的解释提供良好的基础资料。
Shallow seismic profiling is one of the indispensable tools in offshore survey to reveal the geological structure and distribution pattern of waters and shallow strata.However,there are various factors which render influences onto offshore data acquisition and resulting in data noises.Even though the frequency is high and the ratio of noise/signal is low,we may still loss valid information in the original profiles.In this paper,we take the Liaohe River Delta as an example and put forward some key techniques for shallow seismic data processing to reduce the noises presented on the profiles so as to improve the noise/signal ratio and enhance the resolution of the original data for better interpretation of sub-bottom geological structures.
出处
《海洋地质前沿》
2016年第9期64-70,共7页
Marine Geology Frontiers
基金
山东省自然科学基金培养基金(ZR2015PD006)
行业基金(201511037)
关键词
浅地层剖面
信噪比
多次波压制
分辨率
振幅补偿
shallow seismic profile
noise/signal ratio
multiple attenuation
resolution
amplitude compensation
