水下节点地震仪在陆地主动源探测中的应用
主动源激发的精确时刻非常重要,为了获取更加精确的激发时刻,我们通过在刘家峡主动源调试安装水下节点地震仪观测系统,记录激发数据。实验证明,该水下节点地震仪观测系统能够清晰记录到气枪震源激发信号。同时对平静时观测数据进行背景噪声分析,噪声功率谱密度低于NHNM噪声曲线,各分项背景噪声值小于−120 dB,与岸边架设仪器背景噪声进行比较,水下地震仪记录噪声略高于岸边陆地地震仪噪声,这可能与水浪、风以及船舶航行等有关。对激发数据进行频谱分析,优势频率在2~8 Hz范围内,与前人研究结果一致,可以作为刘家峡主动源激发信号记录的参考台之一。水下节点地震仪在陆地主动源探测中的应用,将对提高气枪主动源观测精度...
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creator | 孙点峰 王亚红 秦满忠 邹锐 万文琦 王志栋 |
description | 主动源激发的精确时刻非常重要,为了获取更加精确的激发时刻,我们通过在刘家峡主动源调试安装水下节点地震仪观测系统,记录激发数据。实验证明,该水下节点地震仪观测系统能够清晰记录到气枪震源激发信号。同时对平静时观测数据进行背景噪声分析,噪声功率谱密度低于NHNM噪声曲线,各分项背景噪声值小于−120 dB,与岸边架设仪器背景噪声进行比较,水下地震仪记录噪声略高于岸边陆地地震仪噪声,这可能与水浪、风以及船舶航行等有关。对激发数据进行频谱分析,优势频率在2~8 Hz范围内,与前人研究结果一致,可以作为刘家峡主动源激发信号记录的参考台之一。水下节点地震仪在陆地主动源探测中的应用,将对提高气枪主动源观测精度以及气枪主动源地震监测系统建设和数据处理有一定的价值。 |
doi_str_mv | 10.19987/j.dzkxjz.2023-015 |
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subjects | Data processing Earthquakes Geophysics Seismic engineering Spectrum analysis Underwater Water waves |
title | 水下节点地震仪在陆地主动源探测中的应用 |
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