日本地球惑星科学連合2023年大会

講演情報

[J] オンラインポスター発表

セッション記号 S (固体地球科学) » S-VC 火山学

[S-VC33] 火山の監視と活動評価

2023年5月25日(木) 13:45 〜 15:15 オンラインポスターZoom会場 (9) (オンラインポスター)

コンビーナ:高木 朗充(気象庁気象研究所)、宗包 浩志(国土地理院)、大湊 隆雄(東京大学地震研究所)

現地ポスター発表開催日時 (2023/5/26 17:15-18:45)

13:45 〜 15:15

[SVC33-P07] Monitoring of Volcanic activity on Mt. Baekdu by using remote and field observation data: Korea Meteorological Administration(KMA)

*Haseong Lee1、Heeun Kim1、Heejeong Seo1、Jimin Lee1Sun-Cheon Park1 (1.Korea Meteorological Administration)

キーワード:Volcano, Volcano monitoring, remote, diffusion model of volcano ash

Mt. Baekdu’s caldera was created in 946~947 by colossal(VEI 7) ‘Millennium’ eruption. Mt. Baekdu is an active volcano on the border between China and North Korea. Because of its location, satellite remote sensing is one of the important tools for understanding of volcanic activity.
We used Satellite images(Sentienl-1, Landsat) to measure deformation of Mt. Baekdu. SAR image(Sentinel-1) is analyzed to obtain the surface displacement. Optical and thermal infrared images are analyzed to obtain surface temperature and caldera area(called `Haven Lake`). We are regularly monitoring volcanic activity using remote analysis.
In 2018, the Korea Metorological Administration(KMA) established the Volcano Specialized Resarch Center, which is conducting joint research between Korea and China. Through this joint research, we have been obtaining field observation data in Mt. Baekdu. We acquire volcanic gas and temperature data from hot spring water and observe surface defromation with the EDM installed in Chanbaishan Tianchi Volcan Observatory(TVO).
Therefore, we monitor volcanic activity not only remotely, but also by regularly analyzing field observation data. As a result of analysis through satellite images and field observation data, it is judged as Mt. Baekdu is currently in a stable state.
In addition, we monitor volcanoes around the Korea Peninsula using VAAC. If there is volcanic activity around the Korea Peninsula including Mt. Baekdu, the diffusion range is calculated using the Ash Diffusion Model.