TY - JOUR A1 - Shvets, A. V. A1 - Hayakawa, M. A1 - Maekawa, S. T1 - Results of subionospheric radio LF monitoring prior to the Tokachi (M=8, Hokkaido, 25 September 2003) earthquake JO - Nat. Hazards Earth Syst. Sci. J1 - NHESS VL - 4 IS - 5/6 SP - 647 EP - 653 Y1 - 2004/10/19 PB - Copernicus Publications SN - 1684-9981 UR - https://nhess.copernicus.org/articles/4/647/2004/ L1 - https://nhess.copernicus.org/articles/4/647/2004/nhess-4-647-2004.pdf DO - 10.5194/nhess-4-647-2004 ER -