• Proceedings of the Speleological Society Conference
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• 1997.10a
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• pp.91-94
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• 1997

오대연지는 중국 흑룡강성의 덕도현 경내에 자리잡고 있는 화산지역이다. 본 지역에는 제4기이래에 형성된 화산들이 많이 분포되어 있는데 그 중심 부위에는 구슬 모양으로 된 다섯 개 못이 있기에 오대연지라 한다. 본 지역의 면적은 약 800$km^2$가 되는데 지형상에서는 주로 화산추와 용암대지로 이루어져 있다. 화산의 형성시대가 다르고 자연경관이 전형적이기 때문에 국내외에서 자연적인 화산박물관으로 널리 알려져 있다.(중략)

• Proceedings of the Speleological Society Conference
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• 1997.10a
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• pp.73-82
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• 1997

화산동굴은 흔히 용암동굴, 용암터널 등으로 불려지고 있다. 흔히 화산활동의 작용에 의하여 이루어진 동굴인데 엄격히 구분하면 화산동굴은 용암굴, 용암수형, 화구 등으로 세분되고 있으니 그 대부분이 용암동굴이고 그 규모도 크기 때문에 화산동굴은 용암굴로 불리고 있다. 이와 같은 화산동굴은 우리나라에서는 그 대부분이 제주도에 극한 분포되고 있다.(중략)

• Journal of the Speleological Society of Korea
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• v.36 no.37
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• pp.114-117
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• 1994

오대연지는 중국 흑룡강성의 덕도현 경내에 자리잡고 있는 화산지역이다. 본 지역에는 제4기 이래에 형성된 화산들이 많이 분포되어 있는데 그 중심부위에는 구슬 모양으로 된 다섯개 못이 있기에 오대연지라 한다. 본 지역의 면적은 약800$\textrm{km}^2$가 되는데 지형상에서는 주로 화산추와 용암대지로 이루어져 있다. 화산의 형성시대가 다르고 자연경관이 전형적이기 때문에 국내외에서 자연적인 화산박물관으로 널리 알려져 있다.(중략)

• Journal of the Korean earth science society
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• v.34 no.6
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• pp.536-549
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• 2013

This study investigates the damages of and analyzes the social and economic impacts of volcanic ash eruptions in the world in order to estimate the potential volcanic ash impacts in South Korea when Mt. Baekdusan volcano erupts in the future. First, we build a comparison chart called "the impact of volcanic ash" on each economic and social sector by using major volcanic eruptions and we compare the damage with respect to volcanic ash thickness/weights. Secondly, we analyze the social and economic impact from volcanic ash. The economic damage is not likely to occur in South Korea, unless Mt. Baekdusan erupts in winter. However, the potential damage should not be overlooked because the volcanic ash may have a global impact around the world. If Mt. Baekdusan volcano erupts when the wind blows from north or northeast, the volcanic ash may then significantly affect South Korea of which economy is highly dependent on exports. Particularly when the volcanic ash moves to the densely populated metropolitan areas or agricultural areas, the damage can be significant. In preparation for the potential volcanic disasters, the volcanic ash forecast table suitable for South Korea should be prepared. In addition, building a Korean volcanic ash hazard map in advance will have a strategic significance.

• Journal of the Speleological Society of Korea
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• no.49
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• pp.67-72
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• 1997

오대연지는 중국 흑룡강성의 덕도현 경내에 자리잡고 있는 화산지역이다. 오대연지 주변에는 제 4기 이래 형성된 화산들이 많이 분포되어 있는데, 그 중심부에는 화산의 용암이 흘러 하천을 가로막아 구슬 모양으로 된 다섯 개의 못이 있기에 ‘오대연지’라 한다. 본 연구는 오대연지와 그 주변의 화산지형에 대해 살펴보는 데에 그 목적이 있다. 그 연구 결과는 다음과 같다 : 첫째, 본 지역은 국내ㆍ외에서 보기 드문 천연적인 화산 박물관으로서 일반적인 관광지로는 물론 화산에 관한 학술연구 활동을 진행하는 훌륭한 장소로 될 수 있다. 둘째, 본 지역의 개발에 있어서 교통조건을 하루 빨리 개선해야 한다. 하얼빈부터 덕도현성까지의 관광열차를 개통하고 오대연지의 관광서비스 시설을 늘려야 하며, 관광산업에 종사할 수 있는 인재를 많이 양성하여야 한다. 넷째, 생태환경을 잘 보존하여야 하며, 화산지역에서의 건축용 석재 채굴을 하루 빨리 중지시키고, 관광객이 화산석을 마구 채취하는 행위를 방지해야 한다.

• Journal of the Korean association of regional geographers
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• v.20 no.1
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• pp.128-140
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• 2014

This study aims to investigate the characteristics and to classify the foreign volcanic disaster maps. Authors try to extract the components of volcanic disaster maps and apply them to the Mt. Baekdu volcano that receives worldwide attention recently has been on an early stage in Korea. Internationally, volcano ash disaster maps are derived and reviewed through three analytical framework components: Hazard Map, Risk Map, and Damage Map. These derived components of volcano ash disaster mapping systems are: 1) cumulative map of past disaster records, 2) probabilistic risk map, 3) scenario-based map and case-by-case utilization maps (evacuation response type, emergency information type, disaster preparedness education type) based on this components are presented.

• Korean Journal of Mineralogy and Petrology
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• v.33 no.4
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• pp.451-462
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• 2020

There are 82 volcanoes active during the 48 weeks of 2019 (January 30 to December 31, 2019; USGS data) Approximately 80~90 volcanoes are active on the Earth for a year. More than 91% of these volcanoes are took place in the circum-Pacific volcanic belt, which is commonly called 'Ring of Fire'. This status coincides with the distribution maps of active volcanoes on the earth: about 80 percent on subduction zone of the convergent plate boundaries; 15 percent on divergent plate boundaries; 5 percent on intra-plate zone. Typically five volcanoes are most active during the survey period (48 weeks); Dukono (Halmahera, Indonesia) 48 times, Aira (Kyushu, Japan) 47 times, Ebeko (Paramushir Island, Russsia) 46 times, Merapi (Central Java, Indonesia) 37 times, Krakatau (Indonesia) 33 times. The comparison of volcanic activity between 2018 and 2019 showed no significant difference. It is assumed that volcanic activity remains stable.

• Korean Journal of Remote Sensing
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• v.33 no.5_1
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• pp.587-598
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• 2017

Volcanic ash is a fine particle smaller than 2 mm in diameters. It falls after the volcanic eruption and causes various damages to transportation, manufacturing industry and respiration of living things. Therefore diffusion information of volcanic ash is highly significant for preventing the damages from it. It is advantageous to utilize satellites for observing the widely diffusing volcanic ash. In this study volcanic ash diffusion information about two eruptions of Mt. Sakurajima were calculated using the geostationary satellite, Communication, Ocean and Meteorological Satellite (COMS) Meteorological Imager (MI) and polar-orbiting satellite, Landsat-8 Operational Land Imager (OLI) and the Thermal InfraRed Sensor (TIRS). The direction and velocity of volcanic ash diffusion were analyzed by extracting the volcanic ash pixels from COMS-MI images and the height was retrieved by adjusting the shadow method to Landsat-8 images. In comparison between the results of this study and those of Volcanic Ash Advisories center (VAAC), the volcanic ash tend to diffuse the same direction in both case. However, the diffusion velocity was about four times slower than VAAC information. Moreover, VAAC only provide an ash height while our study produced a variety of height information with respect to ash diffusion. The reason for different results is measured location. In case of VAAC, they produced approximate ash information around volcano crater to rapid response, while we conducted an analysis of the ash diffusion whole area using ash observed images. It is important to measure ash diffusion when large-scale eruption occurs around the Korean peninsula. In this study, it can be used to produce various ash information about the ash diffusion area using different characteristics satellite images.

• The Journal of the Petrological Society of Korea
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• v.25 no.2
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• pp.143-149
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• 2016

Eruptive volumes of three monogenetic volcanoes (Songaksan tuff ring, Biyangdo scoria cone, and Ilchulbong tuff cone) with the youngest eruption age are calculated using the model, applied to Auckland Volcanic Field in New Zealand, to investigate the volcanic eruption scale and to evaluate volcanic hazard of Jeju Island. Calculated eruptive volumes of the volcanoes are $24,987,557m^3$, $9,652,025m^3$, and $11,911,534m^3$, respectively, and the volumes include crater infill, tuff ring (tuff cone), scoria cone, and lava flow. Volcanic explosivity indices of Songaksan tuff ring, Biyangdo scoria cone, and Ilchulbong tuff cone are estimated based on the eruptive volumes to be 3, 2, and 3 respectively, and eruption type is Strombolian to Surtseyan. It is assumed that the amount of emitted sulfur dioxide gas is $2-8{\times}10^3kt/y$ according to the correlation between volcanic explosivity index and volcanic sulfur dioxide index. Recent age dating researches reveal evidences of several volcanic activities during the last 10,000 years indicating the possible volcanic eruption in Jeju Island in the near future. Therefore, it is necessary for appropriate researches regarding volcanic eruption of the island to be accomplished. In addition, establishment of the evaluation and preparation system for volcanic hazard based on the researches is required.

• Journal of the Speleological Society of Korea
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• v.6 no.7
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• pp.8-14
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• 1981

본 연구 대상지역인 제주도는 신생대 제3기말에서 제4기에 걸쳐 형성된 화산도로 비교적 형성시기가 새롭고 침식이 미약하여 화산 원지형을 잘 보존하고 있어 화산지형 연구에 매우 적합한 지역이다. 본도에서는 주화산체인 한라산과 400여개에 달하는 기생화산으로 되어 있다.(중략)