[S-GD01] 測地学・GGOS

[SGD01-P02] 富士山重力観測網の拡充と2023年の観測成果

*本多 亮¹、今西 祐一²、西山 竜一²、風間 卓仁³、若林 環³、名和 一成⁴、堀川 卓哉⁴、後藤 宏樹⁴、市川 隆一⁵、市原 寛⁶、松廣 健二郎⁶、岡田 和見⁷ (1.山梨県富士山科学研究所、2.東京大学地震研究所、3.京都大学理学研究科、4.産業技術総合研究所、5.情報通信研究機構、6.名古屋大学地震火山研究センター、7.北海道大学地震火山研究観測センター)

キーワード：重力、富士山、火山、重力モニタリング

The annual joint gravity measurement on the Mt. Fuji Gravity Observation Network was carried out in September 2023. As in previous years, we carried out absolute gravity measurements at the station MFRI and station SL5ST, as well as round-trip measurements by relative gravimeters at the same time. In addition, new experiments were carried out. For this measurement, a new observation station was installed inside Tsuru University Library.
The new observation station has a large gravity difference relative to station MFRI, making it convenient for various experiments. In addition, it can serve as an important reference gravity point, as it is extremely unlikely that gravity changes due to volcanic activity will occur during an eruption of Mt. Fuji. This presentation will provide an overview of the observation results in 2023.

We appreciate NIED for allowing us to operate their relative gravimeter CG-3M in our research.