Comparative Analysis of Interference Factors of GM4 and FHD in Longyan Seismic Station
ZHENG Yongtong
ZHANG Nianming
LIU Qishou
QUAN Jianjun
ZHENG Jianzhi
Abstract：GM4 and FHD are disturbed by many factors in different directions and different distance, such as vehicles, large machinery, high voltage DC in Longyan seismic station. Based on the comparative analysis, the paper focused on the causes of interference from vehicles which is parking outside or leaving soon. The typical morphological characteristics and processing methods of interference effect of GM4 and FHD by vehicles, large machinery, high voltage DC are summarized, so as to improve the ability of judgment and processing of daily geomagnetic disturbance causes and eliminate interference, which is useful for the service quality of geomagnetic observation data.
Keywords：Longyan seismic stationGM4 and FHD geomagnetic meterTypical interferenceComparative analysis
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 66-74 )