2次元S波速度構造推定における地震波干渉法の常時微動記録への適用性
2022 年 87 巻 798 号 p. 690-700
詳細
2022 年 87 巻 798 号 p. 690-700
The applicability of the seismic interferometry was examined for the purpose of establishing a method for investigating the two-dimensional S wave velocity structure. Microtremor records were obtained for 14 hours and 22 hours at two sites with different vibration levels, respectively. The main findings obtained are as follows.
1. S-wave velocity structures at depths of 20 m or more can be explored, which is difficult to do with existing surface wave surveys.
2. Phase velocity can be detected in about one hour of measurement by arranging a large number of receiving points in a straight line.
