Fig. 7From: Ground strains induced by the 2022 Hunga-Tonga volcanic eruption, observed by a 1500-m laser strainmeter at Kamioka, JapanBode plots of transfer functions from the atmospheric pressure to horizontal strain calculated for (a) \({L}_{1}\), (b) \({L}_{2}\), and (c) \({L}_{3}\) using the data recorded in the periods shown in Table 1. The peak around 30–40 mHz corresponds to the resonance of the tunnel (Washimi et al. 2022)Back to article page