Economic and Environmental Geology

Table. 1.

Table. 1.

Number of falling rocks by year at Daljeon-ri columnat joint, Pohang

Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Total
2018 Preparation 8 423 71 13 20 190 14 17 323 19 29 1,127
2019 13 17 7 154 13 52 61 56 116 192 17 11 709
2020 53 25 7 37 26 122 154 17 115 31 4 14 605
2021 20 26 34 61 33 9 31 Environmental arrangement 214
2022 Environmental arrangement 93 74 24 135 94 156 - - - - 576
Econ. Environ. Geol. 2022;55:497-510 https://doi.org/10.9719/EEG.2022.55.5.497
© 2022 Econ. Environ. Geol.