【摘要】 地震技术方法是研究海底之下地层沉积特征的主要手段。针对地震资料特点和研究需求,开展了新近系以来的沉积特征的地震方法研究,利用资料净化、多次波压制和高分辨率岩性处理等技术方法,提高了地震资料的信噪比和分辨率;采用基于多道地震叠加速度资料基础的速度分析和时间—深度转换方法,保证了沉积地层埋藏深度的计算精度;以海洋地质学、地震地层学的方法为指导,预测地层岩相并评判了沉积环境。CSDP-1孔的钻探结果证明研究方法的有效性。更多还原

【Abstract】 Seismic technology is the main tool for revealing sedimentary characteristics of the deposits under seabed.In the South Yellow Sea,it is an urgent need to carry out the research of seismic methods for better interpretation of sedimentary characteristics of the Neogene.The methods for data purification,multiple wave suppression and high resolution lithology identification have been adopted to improve the signal-to-noise ratio and resolution.Together with velocity analysis and time-depth conversion,multi-channel seismic stack velocity data are used to ensure the accurate calculation of the buried depth of strata.Following the principles of marine geology and seismic stratigraphy,depositional facies and evaluation of sedimentary environment are defined.CSDP-1hole is selected as the case to test the validity of the methods.更多还原