The nature of terrestrial infragravitational 'noise'

摘要

This paper is focused on analysis of comprehensive experimental research data on the infragravitational range of periods (from 20 s to 10-12 min) obtained by synchronous measurements of fluctuations in deformations of the Earth's crust and atmospheric and hydrospheric pressure variations. It is established that the identified variations in the period range of 1-4 min are rarely observed in records of a laser nanobarograph and laser instrument for measuring hydrospheric pressure variations (laser hydrophone), while they are frequently observed in records of laser strainmeters at a variation period of 3-4 min. Oscillation excitation in the period ranges of 7-13 min, especially in the period ranges of 8-12 min, is largely related to atmospheric processes in the corresponding periods.