2017年の南岳爆発に前後する傾斜ひずみ変化
書誌事項
- タイトル別名
-
- Tilt and Strain Change Before and After the Explosion at Minami-dake, Sakurajima, in 2017
この論文をさがす
抄録
Deformation source associated with each eruption at Sakurajima have been estimated beneath Minami-dake for each eruption. Deformation sources for mid-long term magma intrusion event were estimated beneath Aira caldera, Kita-dake and Minami-dake. A new observation tunnel was installed at Komen in August 2016. On November 13, 2017, an explosion with an infrasound occurred at Minami-dake at 22:07. Ground deflation was accompanied and kept for approximately five hours. Most tilt vectors showed radial pattern of deflation at Minami-dake, whereas that at Komen showed deflation at northern part of Sakurajima. We modeled the tilt and strain change except Komen. At first, we modeled the deflation based on the Mogi model. A deflation source was located beneath Minami-dake. Directions of observed and calculated tilt vectors were slightly different at western and northern stations. We then applied a sill model. A sill was located between Minami-dake and Kita-dake. Magma may migrate wider area than it has been considered during each eruption at Sakurajima. This sill model cannot explain tilt change at Komen. There might be a local displacement around Komen.
収録刊行物
-
- 京都大学防災研究所年報. B
-
京都大学防災研究所年報. B 61 (B), 324-329, 2018-09
京都大学防災研究所
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1050845763139273984
-
- NII書誌ID
- AN00027784
-
- ISSN
- 0386412X
-
- HANDLE
- 2433/235849
-
- 本文言語コード
- ja
-
- 資料種別
- departmental bulletin paper
-
- データソース種別
-
- IRDB