Proceedings of the 6th New Zealand Geothermal Workshop 1985. Interpretation of head-on resistivity data from Olkaria, Kenya. New Zealand Geothermal Workshop [7-9 Nov. 1984, New Zealand].

Ussher, G.N.H. Mwangi, M. Anderson, E.B.

[1984]

CIENA
171

0-86869-056-2

Head-on (half-Schlumberger) resistivity measurements along ten profiles (Cheng, 1980), together with sixty-seven Schlumberger soundings, have been carried out at Olkaria in 1981 and 1982. Analysis of this data has been by two dimensional modelling with initial models derived from one dimensional interpretation of the soundings - Kenya Power Co. Ltd, 1984-. It has been found that cross-overs in the head-on data, usually interpreted qualitatively as the locations of fault zones, are better modelled by simple lateral resistivity changes in vecinity. Strong near-surface variations in resistivity, indicated by rapid fluctuations in the head-on data for small AB/2 (250m), means that the precise location and dip of conductive zones cannot be well-determined.

Presenta gráfs., maps. y tbls.

KENYA; ENERGIA GEOTERMICA; RESISTIVIDAD ELECTRICA; ESTUDIOS GEOFISICOS; INTERPRETACION SISMICA; MODELOS;