2024-03-29T11:06:39Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/451502022-11-17T02:08:08Zhdl_2115_45143hdl_2115_13714hdl_2115_116北海道東部弟子屈地域の重力異常Gravity Anomaly over the Teshikaga Region, Eastern Hokkaido本多, 亮Honda, Ryo市原, 寛Ichihara, Hiroshi神山, 裕幸kamiyama, Hiroyuki茂木, 透Mogi, Toru中川, 光弘Nakagawa, Mitsuhiroopen access450We have been measuring gravity data over the Kutcharo area, Eastern Hokkaido (Doto Region). The main purpose of our data collection can be divided into two. The first is the earthquake fault, which runs through the rim of lake Kutcharo. Teshikaga region had been the only region which experienced large (MJMA > 6) inland earthquake, until the 2004 Rumoi-nanbu earthquake occurred. The second is the largest volcanic caldera in Japan, the Kutcharo caldera. In this paper, we made detailed Bouguer anomaly map over the Teshikaga region. The gravity anomaly map was improved by newly obtained data and the lake water correction. Our gravity survey was performed during these 5 years, around the earthquake fault and at the northern side of the Lake Kutcharo. The lake water gravity correction was calculated for the Lake Masyu and the Lake Kutcharo. We also made Digital Depth Model for the Lake Masyu and the Lake Kutchrao.北海道大学大学院理学研究院自然史科学部門(地球物理学)2011-03-19jpndepartmental bulletin paperVoRhttps://doi.org/10.14943/gbhu.74.21http://hdl.handle.net/2115/4515010.14943/gbhu.74.210439-3503AN0008976X北海道大学地球物理学研究報告Geophysical bulletin of Hokkaido University742143https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/45150/1/P21-43honda.pdfapplication/pdf7.72 MB2011-03-19