The effect of ground water level variations on some gravitational field characteristics in Poltava

Details The effect of ground water level variations on some gravitational field characteristics in Poltava The effect of ground water level variations on some gravitational field characteristics in Poltava

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989kfnt....5...13b&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 5, Mar.-Apr. 1989, p. 13-15. In Russian.

Physics

Gravitational Fields, Ground Water, Hydrology, Planetary Gravitation, Acceleration (Physics), Annual Variations, Geoids, Gravimetry, Long Term Effects

Scientific paper

It is established that seasonal ground water level variations (of about 2 m) lead to a free-fall acceleration variation with an amplitude of 30 x 10 to the -8th m/sq sec. This leads to variations of the components of deflections of the vertical of about 0.001 arcsec as well as a quasi-geoid height variation of up to 2 mm. Therefore, allowance should be made for ground water level variations during precise gravimetric, astrometric, and geodetic work.

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