-
Akihiko Terada
Institute of Seismology and Volcanology, Hokkaido Univ.
-
Hiromu Okada
Institute of Seismology and Volcanology, Hokkaido Univ.
-
Nobuaki Itabashi
Hokkaido Regional Development Bureau
-
Koji Kato
Sapporo District Meteorological Observatory
-
Hiroshi Koyama
Sapporo District Meteorological Observatory