• Title, Summary, Keyword: 재피해

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A Study on the Volcanic Ash Damage Sector Selection based on the Analysis of Overseas Cases and Domestic Spatial Information (해외 사례 분석과 국내 공간정보 분석을 통한 화산재 피해 분야 선정)

  • Han, Hyeon-gyeong;Baek, Won-kyung;Jung, Hyung-sup;Kim, Miri;Lee, Moungjin
    • Korean Journal of Remote Sensing
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    • v.35 no.5_1
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    • pp.751-761
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    • 2019
  • Mt. Baekdu, Mt. Aso, Mt. Sakurajima, Mt. Kikai and etc are distributed around the Korean Peninsula. Recently signs of eruption of Mt. Baekdu are increasing, raising concerns over possible damage to volcanic ash from seasonal winds during the winter eruption. Therefore, detailed procedures for investigation and countermeasures for volcanic ash spread and damage are required. But the standards for the warning and alarm signal of volcanic ash presented by Korea Ministry of Government Legislation are vague, with "when damage is expected" and "when serious damage is expected". In this study, to analyze the damage threshold and to apply the cases of overseas damage to the country, a survey was conducted on the establishment of domestic spatial information by public institutions with public confidence. As a result of the investigation of damage from volcanic ash overseas, the details of the damage cases were different depending on the type of life or income sources of each country. Therefore, instead of applying the volcanic ash damage cases abroad in Korea, spatial information analysis was performed to reflect domestic social and natural characteristics. In addition, we selected the areas to be considered in the event of volcanic ash damage in Korea. Finally, domestic volcanic ash damages should be classified as health, residential, road, railroad, aviation, power, water, agriculture, livestock, forest, and soil. When establishing the volcanic ash alarm optimized for Korea in the future, overseas volcanic ash damage cases and domestic spatial information construction in this study will be helpful in policy establishment.

Anatomical and Physical Characteristics of Pinus densiflora Wood Damaged by Forest Fire - Difference by Damage Level - (산불 피해 소나무 목재의 해부 및 물리적 특성 - 피해 정도에 따른 차이-)

  • Kwon, Sung-Min;Chun, Kun-Woo;Kim, Nam-Hun
    • Journal of the Korean Wood Science and Technology
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    • v.36 no.4
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    • pp.84-92
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    • 2008
  • Anatomical and physical characteristics of Pinus densiflora woods damaged by forest fire at Yangyang-gun, Kangwon-do were investigated in present study. Even though the bark was severly carbonized, no trace of carbonization in the xylem was found. The amount of resin exudation was different by the degree of fire damage. Green moisture content of sapwood in the damaged wood was lower than that in the sound wood, but vice versa in the heartwood. Green density of heartwood in the damaged wood was higher than that in the sound wood, but there was no significant difference in sapwood. Cambial activities were found stopped in the severely damaged wood but were identified in the lightly damaged wood. In safranine staining process, epithelial and ray parenchyma cell walls in the damaged woods showed darker hue than those in the sound wood. Granular substances were observed in the lumina of ray parenchyma and epithelial cells of the severely damaged wood. Relative crystallinity of the outermost growth ring in the severely damaged wood was slightly higher than that in the sound wood.

Damage and Socio-Economic Impact of Volcanic Ash (화산재 양에 따른 피해와 사회 · 경제적 영향 분석)

  • Jiang, Zhuhua;Yu, Soonyoung;Yoon, Seong-Min;Choi, Ki-Hong
    • 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.

Anatomical and Physical Characteristics of Pinus densiflora Wood Damaged by Thecodiplosis japonensis Uchida et Inouye (솔잎혹파리 피해 소나무재의 해부 및 물리학적 특성)

  • Hwang, Won-Joong;Kwon, Goo-Joong;Lee, Chan-Young;Kim, Nam-Hun
    • Journal of Forest and Environmental Science
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    • v.17 no.1
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    • pp.37-46
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    • 2001
  • The objective of this work is to examine anatomical and physical characteristics of wood damaged by pine needle gall midge(PNGM, Thecodiplosis japonensis Uchida et Inouye) in Pinus densiflora. In anatomical characteristics, it was noted that the number of axial and radial resin canals in the damaged wood was higher than that in sound wood. In damaged wood, green moisture content of sapwood and swelling and shrinkage was higher than sound wood. Both longitudinal compressive strength and bending strength of the damaged wood were lower than those of sound wood. On the other hand, shearing strength of damaged wood was similar to that of sound wood.

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Estimation of Economic Losses on the Agricultural Sector in Gangwon Province, Korea, Based on the Baekdusan Volcanic Ash Damage Scenario (백두산 화산재 피해 시나리오에 따른 강원도 지역 농작물의 경제적 피해 추정)

  • Lee, Yun-Jung;Kim, Su-Do;Chun, Joonseok;Woo, Gyun
    • Journal of the Korean earth science society
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    • v.34 no.6
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    • pp.515-523
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    • 2013
  • The eastern coast of South Korea is expected to be damaged by volcanic ash when Mt. Baekdusan volcano erupts. Even if the amount of volcanic ash is small, it can be fatal on the agricultural sector withering many plants and causing soil acidification. Thus, in this paper, we aim to estimate agricultural losses caused by the volcanic ash and to visualize them with Google map. To estimate the volcanic ash losses, a damage assessment model is needed. As the volcanic ash hazard depends on the kind of a crops and the ash thickness, the fragility function of damage assessment model should represent the relation between ash thickness and damage rate of crops. Thus, we model the fragility function using the damage rate for each crop of RiskScape. The volcanic ash losses can be calculated with the agricultural output and the price of each crop using the fragility function. This paper also represents the estimated result of the losses in Gangwon province, which is most likely to get damaged by volcanic ashes in Korea. According to the result with gross agricultural output of Gangwon province in 2010, the amount of volcanic ash losses runs nearly 635,124 million wons in Korean currency if volcanic ash is accumulated over four millimeters. This amount represents about 50% of the gross agricultural output of Gangwon province. We consider the damage only for the crops in this paper. However, a volcanic ash fall has the potential to damage the assets for a farm, including the soil fertility and installations. Thus, to estimate the total amount of volcanic ash damage for the whole agricultural sectors, these collateral damages should also be considered.

The Analysis of Volcanic-ash-deposition Damage using Spatial-information-based Volcanic Ash Damage Sector and Volcanic Ash Diffusion Simulation of Mt. Aso Volcano Eruption Scenario (공간정보 기반의 국내 화산재 피해 분야와 아소산 화산재 모의 확산 시나리오를 활용한 화산재 누적 피해 분석)

  • Baek, Won-Kyung;Kim, Miri;Han, Hyeon-gyeong;Jung, Hyung-Sup;Hwang, Eui-Hong;Lee, Haseong;Sun, Jongsun;Chang, Eun-Chul;Lee, Moungjin
    • Korean Journal of Remote Sensing
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    • v.35 no.6_3
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    • pp.1221-1233
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    • 2019
  • Estimating damage in each sector that can be caused by volcanic ash deposition, is very important to prepare the volcanic ash disaster. In this study, we showed predicted-Korean-volcanic-ash damage of each sector by using volcanic ash diffusion simulation and spatial-data-based volcanic ash damage sector in previous study. To this end, volcanic ash related base maps were generated by collecting and processing spatial information data. Finally, we showed Korean-volcanic-ash-deposition damages by sector using the collected Mt. Aso volcanic ash scenarios via overlapping analysis. As a result, volcanic-ash-related damages were expected to occur in the 162 and 134 districts for each Aso volcanic ash scenarios, since those districts exceeds the minimum volcanic ash damage criterion of 0.01 mm. Finally, we compared possible volcanic ash damages by sectors using collected and processed spatial data, after selecting administrative districts(Scenario 190805- Kangwon-do, Kyungsangbuk-do; Scenario 190811-Chuncheon-si, Hongcheon-si) with the largest amount of volcanic ash deposition.

A Study of the Relationship between Termite-Damaged Cultural Heritage Sites and the Forest Tending Project (숲가꾸기 사업과 흰개미 피해를 받은 문화재와의 관련성에 관한 연구)

  • Kim, Minseon;Kim, Choongsik
    • MUNHWAJAE Korean Journal of Cultural Heritage Studies
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    • v.53 no.2
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    • pp.24-35
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    • 2020
  • This study aims to identify the relationship between termite-damaged cultural heritage sites and the 'Forest Tending Project' based on a comprehensive survey of the status of damage caused by termites and of the Forest Tending Project. It was observed that the Forest Tending Project started in 2004 as a five-year policy project covering over 59% of the nation's forests, which showed the maximum value in 2009 and then gradually decreased. Since then, increased damage to national cultural heritage sites by termites has been confirmed and counter measures have been expanded since 2012. Also, as a result of the National Research Institute of Cultural Heritage surveying the status of termite damage in national cultural heritage sites over these six years, it was identified that about 98% of investigated cultural heritage sites were damaged by termites, about 78% of them were adjacent to forests, and that all 46 national cultural heritage sites which had been included in the 2008 Forest Fire Prevention Cultural Heritage Afforestation Project were damaged by termites. Therefore, it is claimed that the number of termite-damaged cultural heritage sites has increased after an extensive Forest Tending Project was applied on a national scale, and it seems that all cultural heritage areas close to forests are particularly subject to termite-damage due to the number of tree stumps and lumber byproducts which can serve as habitats for the pests.

Estraction Method of Damaged Area by Bursaphelenchus Xylophilus using Satellite Image and GIS (위성영상과 GIS를 이용한 소나무재선충 피해지역 추출 기법)

  • Jo, Myung-Hee;Kim, Joon-Bum;Oh, Jeong-Soo;Park, Sung-Joong;Kwon, San
    • Proceedings of the KSRS Conference
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    • pp.62-69
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    • 2001
  • 본 연구에서는 해상도가 상이한 시기별 위성영상과 GIS를 이용하여 경남 통영시 한산면 추봉도 지역의 소나무재선충(Bursaphelenchus Xylophilus) 피해지역을 탐지하고 다양한 영상처리를 통하여 이를 효율적으로 추출 할 수 있는 기법을 선정하였다. 연구결과 피해지역의 공간적 범위를 추출하기 위해서는 감독분류의 MHC(Mahalanobis Distance Classification)가 유용하였고 벌채 후의 토지피복 분류로 인한 피해지역 추출을 위해서는 MLC(Maximum Likelihood Classification)가 최적한 기법으로 나타났다. 아울러 이에 관련된 GIS를 구축하여 공간정보를 추출함으로써 피해지역의 공간적 분포특성을 규명하였는데 고도 약 120-160m, 경사 21$^{\circ}$-40$^{\circ}$ 그리고 서쪽 방향 사면에서 소나무재선충이 가장 활발하게 활동하였음이 밝혀졌다.

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건물 외장재의 화재성능평가

  • Gwak, Ji-Hyeon
    • 방재와보험
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    • pp.42-47
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    • 2007
  • 건물에 화재가 발생하면 인명피해와 재산손실을 야기하여 대단한 피해를 일으킬 수 있다. 이에 BRE의 자매기관인 LPCB(손해방지인증위원회)가 인명과 재산을 보호하기 위한 기준을 개발하고 인증기구를 출범하였다. 이와 관련 건물 외장재의 화재성능평가에 대해 알아본다.

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Economic Loss Estimation of Mt. Baekdu Eruption Scenarios (백두산 화산 분화 시나리오에 따른 경제적 손실 평가)

  • Yu, Soonyoung;Lee, Yun-Jung;Yoon, Seong-Min;Choi, Ki-Hong
    • Economic and Environmental Geology
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    • v.47 no.3
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    • pp.205-217
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    • 2014
  • As Mt. Backdu is expected to erupt, the social and economic impacts of the eruption on the Korean peninsula as well as on the world become a research topic of interest. If the volcano erupts, South Korea can be directly impacted by volcanic ash, which will bring out secondary damages in various ways. Given that the direct damage is a basis to estimate indirect and secondary damages, this paper was to review a method to estimate direct damages, called catastrophe risk models, and estimate the direct damages of available eruption scenarios of Mt. Baekdu. Based on the results, the damages by volcanic ash will occur mostly around Gangwon province if the Mt. Backdu erupts. Thus the inventory lists and their damage functions of Gangwon provinces were collected. In particular agricultural and forestry products were surveyed based on the land use. Direct damages were estimated using volcanic ash distribution of eruption scenarios, inventory information and their damage functions. In result, a scenario in winter caused the damage of 299.8 billion KRW (20.4% of total agricultural production in 2010) and 28.9 billion KRW (9.0% of total forestry production in 2010) in agriculture and forestry, respectively. The damages in agriculture was larger, and it is due to the damage functions which show the agricultural products are more vulnerable to volcanic ash than forestry products. Also the agricultural production (1,471.7 billion KRW in 2010) are more than 4.5 times the forestry production (322.3 billion KRW in 2010) in Gangwon province. Inje and Gangnung had the most damages in the scenario in winter. Inje had the most damage due to the thick ash deposit (8.5 mm in average) despite the low production. On the other hand, Goseong had a low damage compared to the ash thickness larger than 20mm, owing to the low production. The direct damage estimated through this process can be used to estimate indirect damages.