崇礼地震台TrilliumHorizon360超宽频带 地震计记录固体潮能力分析

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中图分类号：P315.63 文献标识码：A 文章编号：2096-7780（2025）09-0529-06

doi：10.19987/j.dzkxjz.2025-029

Analysis of solid tide recording capacity of Trillium Horizon 36o ultra-broadband seismometer at Chongli seismic station

Zhang Xiaogang1，2），Wei Kexin1，2），Liu Shuang1，2）， Yin Kangda1，2），Li Xueying1，2）

1）HebeiHongshanNational ObservatoryonThick Sediments andSeismic Hazards，Hebei Xingtai O540oo，China

2） Hebei Earthquake Agency， Hebei Shijiazhuang O5oo21， China

AbstractLong-period low-frequency waves in seismic records contain crucial information regarding the adjustment of crustal stress states andthe mechanical propertiesofthe mediumand thus hold significant research value. However，their studywas limitedbythe scareityofsystematicobservations.Solidtides，as naturaland stable long-period signal sources in geophysics，serve as key indicators for evaluating thelow-frequency response performance of instruments.This study，basedonthe low-noiseultra-wideband reference stationbuilt at Chongli seismic station under the

National Seismic IntensityRapid Reporting and Early Warming Project，utilized the continuous observation data from the Trillium Horizon360 ultra-broadbandseismometerdeployed there inDecember2024 to systematicallyassess the instrument’srecording capabilityofsolidtides.Theresults indicate that theinstrumentcanclearlyrecord solidtides，with the observed curves exhibiting good consistency withthe theoretical solid tidesand relatively good corespondence with the deformation and tilt observations at the same site.This fully confirms the superior observation environment of the Chongli seismic station and demonstrates that the Trilium Horizon 360 seismometer possesses excellent capabilities in observing ultra-low-frequency long-period signals.This has significant implications for recording and studying longperiod signals generated by the Earth's vibrations.

Keywordsearthquake; ultra-broadband seismometer; solid tide

0 引言

地震记录中低频波的产生和传播与地应力的变化与调整有关，蕴含着不均匀介质的结构、应力状态、介质力学参数量及其动力学响应等物理学信息，具有重要的研究和开发价值[1]。（剩余6440字）