Seismic hazard risk assessment for the immovable cultural relics: the national key cultural relics protection units of cave temples and stone

Potential and possible damages that earthquake could inflict on grotto temples and stone carvings in Fujian province are evaluated．Risk of disaster-causing factors, sensitivity of disaster-generating environment, vulnerability of cultural relics were taken into account to build the evaluation system, which combined the comprehensive index method, entropy weighting method and expert scoring method．This system was used to calculate seismic hazard risk values of each cave temple and rock carving．Natural fracture method was used to classify risk levels．The overall spatial distribution of seismic risk in Fujian province was found higher in the south but lower in the north．From the offshore to the inland area, the risk gradually decreased．The sensitivity of environment was found higher in inland areas and lower in coastal areas; sensitivity in east and west areas was relatively low, the southwest was the lowest. About 66% of state-protected cave temples and rock carvings in Fujian were found at medium risk or above, with the highest vulnerability being at the cliff carvings in Gushan, which will need to be given the highest priority．