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ISSN 2096-7780 CN 10-1665/P

宁夏应急流动观测的测震数据质量分析

Analysis of data quality from the emergency transportable seismic stations in Ningxia

  • 摘要: 通过对2020年和2021年西北片区应急流动测震台网演练中宁夏回族自治区地震局2个流动测震台的台址情况、台基类型、架设方式、数据质量、观测环境进行分析讨论,得到以下认识:风对采用地表架设方式台站的数据质量影响显著,相比采用地埋架设方式台站,风速6.8 m/s时地表架设台站1~20 Hz水平向地噪声明显增大;西北多风地区,相同位置采用同样的防风保温措施,相对于基岩出露位置采用地表架设方式台站,采用地埋架设方式台站的观测数据质量较好。

     

    Abstract: This study examines the site selection, station type, construction mode, data quality, and environmental conditions of two transportable seismic stations operated by the Earthquake Agency of the Ningxia Hui Autonomous Region during emergency transportable seismic network drills in Northwest China in 2020 and 2021. The conclusions are as follows: The wind has a more significant impact on stations constructed on the ground than those buried underground, causing an increase in horizontal ground noise in the 1~20 Hz. In the windy area of Northwest China, under the same windproof and heat-retaining conditions, soil-based stations buried underground have better observation quality and lower ground noise levels than rock-based stations constructed on the ground.

     

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