石油物探2024，Vol.63Issue(1)：45-60,16.DOI:10.12431/issn.1000-1441.2024.63.01.004
典型水深与海底介质条件下的OBC/OBN多分量地震数据波型特征
Wave modes of multi-component OBC/OBN data under typical water depth and bottom medium conditions
摘要
Abstract
Multi-component OBC(ocean bottom cable)and OBN(ocean bottom node)surveys are important techniques for off-shore exploration.Seismic waves travelling back and forth between free surface and the sea floor generate complicated wave modes in multi-component seismogram.How to understand the intrinsic mechanisms and influences of various signals and noises is crucial to data processing and interpretation.In view of various potential wave fields in offshore multi-component seismic data,we estab-lish elastic parameter models in accordance with different water depths and properties of typical sea-floor deposits and generate synthetic multi-component OBC/OBN records using the spectral element method.The influences of water depth and sea-floor me-dium properties on the kinematic and dynamic performance of wave fields are investigated in terms of the behavior of different wave modes.Based on the comparative analysis of OBS(ocean bottom seismograph)data acquired from a shallow-water zone in the East China Sea and deep-water zone in the South China Sea,we establish the controlling mechanism of free-surface multiples and sea-floor boundary waves by water depth and sea-floor medium properties,which may be helpful to the development and appli-cation of offshore multi-component data processing techniques.关键词
海底多分量地震/海底界面效应/P-S模式耦合/自由表面多次波/海底地震仪/OBC/OBNKey words
offshore multi-component seismic data/sea-floor interfacial effect/P-S mode coupling/free-surface multiples/ocean bot-tom seismometer/OBC/OBN分类
天文与地球科学引用本文复制引用
王腾飞,刘学义,程玖兵..典型水深与海底介质条件下的OBC/OBN多分量地震数据波型特征[J].石油物探,2024,63(1):45-60,16.基金项目
国家自然科学基金(42204110,42074157)、上海市面上自然科学基金(22ZR1465200)共同资助.This research is financially supported by the National Natural Science Foundation of China(Grant Nos.42204110,42074157)and the Natural Sci-ence Foundation of Shanghai(Grant No.22ZR1465200). （42204110,42074157）
