Slide
Parrot and Lefeuvre, 1985 , Mattews et al., 1985 –GEOS1,2
Larkina et al., 1985, Chmyrev et al., 1989- Bulgaria 1300
Parrot and Mogilevsky ,1989 – Aureol-3
EQ preparation ?Microfracturing near ground surface?
EMR on the ground? EMR on satellites