Analysis of Observation Quality and Co-seismic Response of Tengchong Vertical Pendulum Inclinometer
Taking the observation data of VP vertical pendulum tiltmeter at Laoyanghe Observation Station in Tengchong during 2021-2022 as the research object,the data quality and coseismic response information of the observation data were sorted out and analyzed.20 typical earthquakes with Ms≥5.0 at home and abroad were taken as examples.The continuous rate,integrity rate,rel-ative noise level M1 of VP vertical pendulum tilter,the mean square error of M2 wave tidal factor γ value and coseismic response characteristics calculated by VenediKov harmonic analysis method,the relationship between response time and epicenter distance,the relationship between maximum response amplitude and epicenter distance,and the relationship between maximum amplitude and magnitude were studied.The results show that the Tengchong LaoYanghe VP inclinometer has high accuracy and good reliability.The delay time of coseismic response is related to the epicenter distance,the maximum amplitude is proportional to the magnitude and inversely proportional to the epicenter distance,and the duration of coseismic response is related to the magnitude and the epicen-ter distance.
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