TY - JOUR A1 - Tanaka, H. A1 - Fujisawa, K. A1 - Asai, K. T1 - Identifying unstable rock blocks by measuring micro-tremors and vibration on cliffs JO - Adv. Geosci. J1 - ADGEO VL - 14 SP - 165 EP - 171 Y1 - 2008/01/02 PB - Copernicus Publications SN - 1680-7359 UR - https://adgeo.copernicus.org/articles/14/165/2008/ L1 - https://adgeo.copernicus.org/articles/14/165/2008/adgeo-14-165-2008.pdf DO - 10.5194/adgeo-14-165-2008 ER -