空气枪震源子阵扩展间距变化影响分析

摘要

In marine seismic exploration,the sub-arrays'separation of air gun source may change under the influence of o-cean current,tide and the gears underwater etc.,which would consequently lead to some extent impact on the performance or the physical specifications of the whole air gun array.Moreover,this impact would affect the quality of the seismic data.De-pending on typical analysis and study on series of far-field signature results of air gun source modeled.This article summarizes the variation of characteristic and effect of source wavelets derived from these situations around the change of sub-arrays'sepa-ration.Analysis on the sub-arrays separations of air gun sources can help to provide solid evidence for making seismic data quality control in the process of data acquisition and thus plays a significant role in the data quality assurance.%在海上地震资料采集时,由于海流、潮汐、设备自身等因素的影响,空气枪子阵扩展间距会发生变化,而这种变化会引起空气枪震源实际性能的改变,给地震资料带来一定的影响.通过定量分析评价子阵扩展间距变化前、后震源子波的特征及影响,为地震资料采集质控提供借鉴,对保证地震资料的质量有着重要意义.