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김연기;최순학
- Proceedings of the Korean Society for Rock Mechanics Conference
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- 1995.03a
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- pp.135-148
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- 1995
지하수의 부존특성을 결정해주는 주 요인으로는 강수량, 증발량, 유출량, 지형, 수계, 토양, 식생 그리고 토지이용 등 여러 가지가 있으나, 무엇보다도 중요한 요인은 지하수를 저류시킬 수 있는 분포암석의 종류와 그 암석의 수문지질학적 특성이다. 우리나라는 퇴적암으로부터 화산암에 이르기까지 퍽 다양한 종류의 암석이 전국토를 형성하고 있어 지하수의 부존특성도 이러한 분포암석에 따라 특징지어진다. (중략)
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Gang, Hyeong-Il;Yun, Byeong-Jun;Kim, Seong-Hyeon;Sin, Deok-Ja;Kim, Hyeon-U;Heo, Jae-Seon;Gang, Ui-Seong;O, Gye-Heon;Go, Yeong-Jin
- Microbiology and Biotechnology Letters
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- v.32 no.4
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- pp.334-340
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- 2004
This study was initially performed to obtain fundamental data on lichen distribution depending on environmental condiLichens distributed on coastal rocks atleast 20 m far away from the coast were also investigated. Analyof morphological characteristics and rDNA ITS clones revealed that lichens containing 9 families and 15 genera were distributed in coastal rocks of V-do, while lichens containing 10 families and 14 genera were in field rocks, demonstrating little difference of diversity between both sites. Foliose lichens such as PhaeophysPhyscia, Pyxine belonging to the family Physciaceae were representatives distributed in coastal rocks of V-do, along with Xanthoparmelia belonging to Parmeliaceae, fruticose lichens such as Ramalina to Ramaliand crustose lichen Lecanora to Lecanoraceae. In contrast, foliose lichen Cladonia belonging to the family Cladoniaceae, fruitcose lichen Stereocaulon to Streocaulaceae, and crustose lichen Porpidia to Porpidwere found only on the surface of field rocks. Crustose lichens containing genera Caloplaca, CanDirinaria, Graphis, Rhizocarpon, and Pertusaria were rarely distributed in coastal rocks, and most of them were also found in field rocks.
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Jeong, Gyo-Cheol;Takahashi, Manabu
- The Journal of Engineering Geology
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- v.20 no.4
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- pp.461-465
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- 2010
Weathering and permeability in rocks play a very important role in underground disposal of radioactive waste and their long-term management as well as stability security of rock structures. Weathering and permeability of rocks are largely controlled by the characters of inner structures of rocks. In other words, weathering rate can be accelerated depending on the quantity of pore and microcrack in rocks. Quantitative evaluation of inner structures of rocks can serve as a tool that can assess the degree of weathering of rocks. Therefore it can be said that the understanding of three dimensional distribution of the inner structure of rocks is important for long-term management of rock structures. This study was performed to analyze three dimensional distribution of pore in rocks using Micro Focus X-ray CT on fresh granite and weathered granite from Korea. Results of the analysis clearly show distribution of pore and porosity of the inner rock.
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