针对gPhone连续重力仪漂移修正困难的情况,收集2019年1月—2024年5月云龙地震台gPhone连续重力仪观测数据,采用流动重力数据控制的方法进行漂移修正,并与目前常用的小波滤波和多项式拟合修正方法进行比较,修正后的结果显示:①5.4 a累计...针对gPhone连续重力仪漂移修正困难的情况,收集2019年1月—2024年5月云龙地震台gPhone连续重力仪观测数据,采用流动重力数据控制的方法进行漂移修正,并与目前常用的小波滤波和多项式拟合修正方法进行比较,修正后的结果显示:①5.4 a累计变化量从约1374×10-8 m/s 2降至69×10-8 m/s 2;②漂移修正结果与5阶多项式修正结果相似;③模型评价结果优于其他2种方法;④残差分布与5阶多项式修正结果接近。展开更多
The properties of laser signals are affected by deformation of the optical fibre through which they are transmitted.While this deformation dependence is undesirable in telecommunication,it can be exploited for the con...The properties of laser signals are affected by deformation of the optical fibre through which they are transmitted.While this deformation dependence is undesirable in telecommunication,it can be exploited for the construction of novel seismic sensors that fill a niche in data acquisition where traditional seismometer arrays would be difficult to deploy.This includes densely populated urban centers,the oceans,volcanoes and the Earth’s polar regions.These notes complement a presentation on recent methodological developments and applications in fibre-optic seismology.The first part is focused on the use of distributed fibreoptic sensing in cryosphere research,and specifically the investigation of the internal structure and seismicity of glaciers and ice sheets.The second part is dedicated to recent advances in integrated fibre-optic sensing,with emphasis on novel measurement principles and sensitivity.展开更多
文摘针对gPhone连续重力仪漂移修正困难的情况,收集2019年1月—2024年5月云龙地震台gPhone连续重力仪观测数据,采用流动重力数据控制的方法进行漂移修正,并与目前常用的小波滤波和多项式拟合修正方法进行比较,修正后的结果显示:①5.4 a累计变化量从约1374×10-8 m/s 2降至69×10-8 m/s 2;②漂移修正结果与5阶多项式修正结果相似;③模型评价结果优于其他2种方法;④残差分布与5阶多项式修正结果接近。
基金partially funded by the Real-time Earthquake Risk Reduction for a Resilient Europe project (RISE) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement Number 821 115)provided by the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 955 515 (SPIN ITN)by the Swiss National Science Foundation (SNSF) Sinergia grant CRSII5_183579
文摘The properties of laser signals are affected by deformation of the optical fibre through which they are transmitted.While this deformation dependence is undesirable in telecommunication,it can be exploited for the construction of novel seismic sensors that fill a niche in data acquisition where traditional seismometer arrays would be difficult to deploy.This includes densely populated urban centers,the oceans,volcanoes and the Earth’s polar regions.These notes complement a presentation on recent methodological developments and applications in fibre-optic seismology.The first part is focused on the use of distributed fibreoptic sensing in cryosphere research,and specifically the investigation of the internal structure and seismicity of glaciers and ice sheets.The second part is dedicated to recent advances in integrated fibre-optic sensing,with emphasis on novel measurement principles and sensitivity.
