TY JOUR TI Large magnetic anomalies over Russia revealed by balloon data KW Geomagnetism KW balloon KW lithosphere KW stratosphere. JO Russian Journal of Earth Sciences AU Nazarova, K.A. AU Tsvetkov, Y.. AU Heirtzler, J.. AU Sabaka, T.. PY 2004 IS 6 PB Geophysical Center of the Russian Academy of Sciences