| Popis: |
Rahat volcanic field, Saudi Arabia, has three major geohazard events; the historical eruption, the fissure eruption, and seismic swarm. A magnetotelluric survey was carried out to evaluate these hazards. The results revealed four major resistivity zones. The first is a layer of intermediate resistivity (40–250 O m) which is thicker to the south-west and thinner to the eastern edge. This layer is underlain by a resistant (>1000 O m) granitic basement. Intruding into the resistive basement are two near-vertical conductive ( |
