| 福建重力台网映震效能分析 |
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| 引用本文： | 洪旭瑜,秦双龙.福建重力台网映震效能分析[J].大地测量与地球动力学,2021,41(3):238-242. |
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| 作者姓名： | 洪旭瑜 秦双龙 |
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| 作者单位： | 福建省地震局,福州市华鸿路7号,350003 |
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| 基金项目： | 福建省地震局青年科技基金 |
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| 摘 要： | 利用福建重力台网7套gPhone重力仪的连续观测资料，对不同震中距和震级地震的同震响应特征及重力仪映震的最大震中距进行分析。结果表明：1）福建重力台网的映震效能受震级和震中距影响，从映震能力来看，泉州台优于莆田台，厦门台优于福州台，漳州台和龙岩台优于南平台；2）福建重力台网的仪器稳定性好和灵敏度高，与CMG-3ESP 120S地震计相比，重力仪具有较宽的地震频带，其同震响应持续时间与波幅呈高度正相关性；3）福建重力台网仪器映震的最大震中距(Δ)与震级（MS）存在对应关系，具体公式为MS=-0.218(logΔ)3+2.056(logΔ)2-4.594logΔ+6.459。
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| 关 键 词： | gPhone重力仪 映震效能 同震响应特征 |
Analysis of Seismic Response Capability of Fujian Gravity Network |
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| HONG Xuyu,QIN Shuanglong.Analysis of Seismic Response Capability of Fujian Gravity Network[J].Journal of Geodesy and Geodynamics,2021,41(3):238-242. |
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| Authors: | HONG Xuyu QIN Shuanglong |
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| Institution: | (Fujian Earthquake Agency,Fuzhou 350003,China) |
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| Abstract: | Based on the continuous observation data of seven gPhone gravimeters in Fujian gravity network,we analyze the coseismic response characteristics of earthquakes with different epicenter distances and magnitudes and the maximum epicenter distance of seismic response capability.The results show that:1)The seismic response capability of Fujian gravity network are affected by magnitude and epicenter distance.In terms of seismic response ability,Quanzhou station is superior to Putian station,Xiamen station is superior to Fuzhou Station,Zhangzhou station and Longyan station are superior to Nanping station.2)Fujian gravity network instrument has good stability and high sensitivity.Compared with CMG-3ESP 120S seismometer,it has a wide seismic frequency band,and its duration of coseismic response is highly positively correlated with wave amplitude.3)The maximum epicenter distance of seismic response capability(Δ)and magnitude(M S)of Fujian gravity network has a corresponding formula:M S=-0.218(logΔ)3+2.056(logΔ)2-4.594logΔ+6.459. |
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| Keywords: | gPhone gravimeter seismic response capability characteristics of coseismic response |
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