1. Uppsala University, Department of Earth Sciences, Uppsala 75236, Sweden.(corresponding author); .
2. Somincor (Lundin Mining Corporation), Mina de Neves-Corvo, Santa Bárbara de Padrões, 7780-409 Castro Verde, Portugal..
3. Laboratório Nacional de Energia e Geologia, Apartado 7586, 2610-999 Amadora, Portugal..
4. Delft University of Technology, 2628 CD Delft, Netherlands..
5. Seismic Mechatronics, 5507 Veldhoven, Netherlands..
6. MIC Nordic AB, 164 32 Kista, Sweden..