• Title/Summary/Keyword: 운석

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Analysis on the Spectral Characteristics of Dolomite and Calcite: Okgye-myeon, Gangneung-si, Gangwon-do (백운석 및 방해석의 분광특성 분석 연구: 강원도 강릉시 옥계면 지역)

  • Eom, Jinah;Ko, Bokyun;Park, Sungjae;Seon, Seung Dae;Lee, Chang-Wook
    • Korean Journal of Remote Sensing
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    • v.35 no.6_3
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    • pp.1261-1271
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    • 2019

  • In case of Korea, limestone is very useful in various industries. These limestones are mainly produced in Gangwon-do. The study area, which is located in Okgye-myeon, Gangneung-si, Gangwon-do, is Okcheon metamorphic belt where abundant limestone, dolomite stone, and high-grade limestone are produced. The purpose of this study is to distinguish between calcite and dolomite among the limestone which is one of the representative carbonate rocks using the spectral characteristics. For this study,spectral characteristics were measured in the field and laboratory using FieldSpec® 3 spectrometer equipment from Analytical Spectral Device Inc. (ASD). In the field, the reflectance was measured below 50 cm from rock surface, and in the laboratory, the reflectance was measured in the rock surface, the polished surface, and the rock powder. As a result, absorption wavelengths of calcite and dolomite were significantly different around 2,330 nm. In particular, the absorption wavelength band position of dolomite appeared before 2,330 nm wavelength compared to calcite. The study could be used as a basis data for analysis of high-grade calcite limestone.

  • https://doi.org/10.7780/kjrs.2019.35.6.3.9 인용 PDF KSCI HTML

천문학적 재난 - 혜성ㆍ운석이 지구와 충돌하면 종말

  • Park, Sang-Jun
    • The Science & Technology
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    • v.35 no.12 s.403
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    • pp.86-87
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    • 2002

  • 천체가 지구에 충돌하면 흙먼지들이 하늘을 뒤덮어 태양빛을 차단, 몇년 동안 겨울이 이어지면서 기온이 내려간다. 또 충돌때 충격으로 지진, 화산폭발, 해일 등이 육지를 휩쓸게 된다. 또 겨울이 끝나면 온실효과가 일어나 기온이 상승하고 극지의 얼음이 녹아 고도가 낮은 육지는 물에 잠겨버린다.

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