Earth tide induced by the Moon and the Sun makes the volume of pores or the apertures of fractures of the bed rock vary, which in turn makes the ground water move. The flow equation of ground water, complete with the tide effect, and its solution, shows that the diffusive propagation of pore pressure is decisive for the response of the perturbation of gravity. Moreover the solution shows that diffusive flow dominates in the Fennoscandian Precambrian rock. The analysis shows that a constitutive coefficient relating the varying perturbation gravity and porosity of bed rock can be determined by field measurements of the level of water in boreholes. Water in a cavity in the bed rock is exposed to an oscillatory interaction with the surrounding pore water. If the cavity is a repository for nuclear waste, this interaction deserves attention. The analysis shows that the magnitude of the oscillatory motion of water between a repository for nuclear waste and its. surrounding groundwater is much less than the vertical motion of the phreatic surface.
Skip Nav Destination
Article navigation
Research Article|
April 01 2005
Vertical motion of ground water in bed rock induced by earth tide and its influence on a repository for burnt nuclear fuel: a theoretical calculation
G. Rehbinder
G. Rehbinder
1Department of Land and Water Resources Engineering, The Royal Institute of Technology, S-100 44 Stockholm, Sweden
Search for other works by this author on:
Hydrology Research (2005) 36 (2): 137–162.
Article history
Received:
April 07 2003
Accepted:
June 11 2004
Citation
G. Rehbinder; Vertical motion of ground water in bed rock induced by earth tide and its influence on a repository for burnt nuclear fuel: a theoretical calculation. Hydrology Research 1 April 2005; 36 (2): 137–162. doi: https://doi.org/10.2166/nh.2005.0011
Download citation file: