单道地震技术在海洋地质调查中的应用——以威海褚岛北部海域为例

Application of Single Channel Seismic Technology in Marine Geological Survey——Setting the Northern Sea Area in Chudao Island in Weihai City as an Example

摘要:

单道地震调查技术方法是海洋地震调查的主要手段之一，海上单道地震具有配置灵活、施工效率高、中—浅部地层分辨率较高、应用面广等特点，在海洋地质调查领域应用广泛。该文简要介绍了单道地震的工作原理，并以威海褚岛北部海域为例,通过分析该区单道地震资料，结合探测目的及仪器性能，制定了针对性的试验方案，确定了分辨率较高的参数优化组合，获得了高质量、高分辨率的海底地层资料。通过对实测单道地震剖面的比较和分析，结合钻孔数据，对威海褚岛北部海域地层进行分层划分及地层单元体系域分析，得出威海褚岛北部海域中—浅地层结构特征及海底地质灾害特征。通过对威海褚岛北部海域单道地震调查应用实例的分析，阐述了海上单道地震在数据采集、处理和解译方面的相关技术。

Abstract:

The Single channel seismic investigation technology, as a primary physical prospecting method, is widely applied in marine geological survey.The single channel seismic has the characteristics of flexible configuration, high construction efficiency, high medium to shallow stratigraphic resolution and wide application, and is widely used in the field of marine geological survey. In this paper, the working principle of the single channel seismic has been briefly introduced. Setting the the northern sea areas of Chudao Island in Weihai city as an example, through analysis on the single channel seismic data in this area, combining with the purpose of detection and the performance of the instrument, a targeted test plan has been established to determine the resolution. The high parameter optimization combination yields high quality, high resolution subsea formation data. Finally, through analysis on the measured sections and the drilling data, the stratigraphic division and system domain analysis are carried out, and the characteristics of the midshallow stratum and the characteristics of the submarine geological hazard are obtained. Based on the analysis of application examples, related technologies of data acquisition, processing and interpretation in single sea seismic have been explained.