The Contrastive analysis of observation data between HLS and DSQ water tube clinometers in Jingxian seismicstation

Abstract

A set of HLS was installed in JingXian seismicstation for the tidal correction of observations from HLS. Harmonic analysis of the data recorded by HLS and DSQ water tube clinometers in JingXian seismicstation and contrastive analysis of the results are completed. The tilt tide can be well reflected in the data of the both instruments and the results are both reliable. The reasons of the difference between the results are analyzed. The tilt tidal factor is related with with the type of observation instruments with different damping constant. Besides, the relations between the frequency response of the instrument and the tidal factor are discussed in this paper. The current research establishs a foundation for HLS to be applied in micron-level precision alignment of particle accelerator in the future.