Estimating the potential risk of the Mt. Baekdu Volcano using a synthetic interferogram and the LAHARZ inundation zone
- PDF / 26,738,346 Bytes
- 14 Pages / 595 x 842 pts (A4) Page_size
- 42 Downloads / 137 Views
Geosciences Journal
GJ
Estimating the potential risk of the Mt. Baekdu Volcano using a synthetic interferogram and the LAHARZ inundation zone Arief R. Achmad1, Seulki Lee1, Sungjae Park1, Jinah Eom2, and Chang-Wook Lee1* 1
Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea Research Institute for Earth Resources, Kangwon National University, Chuncheon 24341, Republic of Korea
2
ABSTRACT: The Baekdu Volcano is located on the border between Jilin Province, China, and Ryanggang Province, North Korea. Its 946 AD eruption had a Volcanic Explosivity Index (VEI) of 7, making it among the most massive eruptions in the past 2000 years, a “Millennium eruption”. Mount Baekdu may erupt in the near future. To examine the future impact of Mount Baekdu, we generated a synthetic interferogram using a Mogi model equation to produce a simulated surface deformation phase and added simulated orbital error, topographic error, and atmospheric effects phases. We output the simulation results to the program LAHARZ, which can generate a potential hazard zone due to lahar flow. Using LAHARZ, the area affected by a Baekdu lava flow would be 4.575, 14.522, 15.866, 60.351, 404.848, 3,019.298, and 6,001.885 km2 with a VEI scale eruption of 1 to 7, respectively, while the synthetic interferogram showed that the simulated surface deformation at Mount Baekdu would be 0.04 cm, 0.1 cm, 0.7 cm, 10 cm, 1 m, 12 m, and 100 m according to the VEI category. This study can be used to estimate the interferometric synthetic aperture radar (SAR) surface deformation of Mount Baekdu and produce a hazard inundation zone map with a more certain lahar flow volume in an actual volcanic eruption and surface deformation detected using SAR images on inflation of the magma chamber. Key words: LAHARZ, Mogi model, mount baekdu, simulation, synthetic interferogram Manuscript received August 13, 2020; Manuscript accepted August 31, 2020
1. INTRODUCTION Mount Baekdu is a stratovolcano located in the Changbai Mountains on the Chinese–North Korean border that has a 2744 m peak and also known as Changbaishan in China. This volcano is renowned because it had a major eruption (Xu et al., 2013) with a substantial climatic impact around 946 AD (Li et al., 1996; Guo et al., 2002) with a Volcanic Explosivity Index (VEI) of 7 (Yin et al., 2012), similar to the eruption of Mount Tambora in Indonesia (Wei et al., 2003). A massive explosive eruption could lead to global catastrophe (Yin et al., 2012). Because of the high danger level, frequent monitoring is necessary to anticipate the impact of a catastrophic *Corresponding author: Chang-Wook Lee Division of Science Education, Kangwon National University, 1 Gangwondaehakgil, Chuncheon 24341, Republic of Korea Tel: +82-33-250-6731, Fax: +82-33-259-5600, E-mail: [email protected]
©The Association of Korean Geoscience Societies and Springer 2020
near-future eruption. Monitoring can be performed using remote sensing data, such as monitoring the volcanic activity by applying anomaly therma
