1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | |
1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 |
The infrasound data on this server is made available to the scientific community for research and educational purposes only. When used in scientific publications a proper acknowledgement should be made to the Swedish Institute of Space Physics, Umeå.