Äspö Hard Rock Laboratory; Using borehole tides to determine fracture parameters; 1 - Theory, pre-study and literature survey
Rapport, 2004

The possibility to use tide observations in boreholes to determine fracture parameters is investigated. This report is the first part of two, and presents the theoretical background and a pre-study. Well tides have clearly been observed in the KAS03 borehole located at Äspö. A time series is analysed from this location. Basic concepts are developed along with a review of the relevant literature. The second part will report the results from estimation of tidal parameters and inference of parameters of a fracture zone model, using observations from 40 different boreholes or borehole sections at Äspö.

atmospheric loading

tidal strain

fractured rock

ocean tide loading

earth tides

borehole geophysics

crystalline rocksPrecambrian bedrock

Baltic Shield

Äspö Hard Rock Laboratory

confined aquifers

precambrian rocks

hydrogeology

groundwater tides

Författare

Hans-Georg Scherneck

Chalmers, Institutionen för radio- och rymdvetenskap, Rymdgeodesi

Ämneskategorier

Geovetenskap och miljövetenskap