TY JOUR TI Emanation and electrical effects in the subsoils atmosphere above Kaluga impact ring structure KW emanation and electrical effects KW subsoils atmosphere KW Kaluga impact ring structure KW hydrogen-thoron emanation survey. JO Russian Journal of Earth Sciences AU Kozlova, N.S. AU Rudakov, V.P. AU Shuleykin, V.N. AU Voitov, G.I. AU Baranova, L.V. PY 1999 IS 1 PB Geophysical Center of the Russian Academy of Sciences