• 제목/요약/키워드: Pohang Korea

검색결과 1,645건 처리시간 0.027초

2017년 포항지진으로 인하여 발생된 최대지반가속도 (PGA)예측 (Prediction of Peak Ground Acceleration Generated from the 2017 Pohang Earthquake)

  • 지현우;한상환
    • 한국지진공학회논문집
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    • 제22권3호
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    • pp.211-217
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    • 2018

  • The Pohang earthquake with a magnitude of 5.4 occurred on November 15, 2018. The epicenter of this earthquake located in south-east region of the Korean peninsula. Since instrumental recording for earthquake ground motions started in Korea, this earthquake caused the largest economic and life losses among past earthquakes. Korea is located in low-to moderate seismic region, so that strong motion records are very limited. Therefore, ground motions recorded during the Pohang earthquake could have valuable geological and seismological information, which are important inputs for seismic design. In this study, ground motions associated by the 2018 Pohang earthquake are generated using the point source model considering domestic geological parameters (magnitude, hypocentral distance, distance-frequency dependent decay parameter, stress drop) and site amplification calculated from ground motion data at each stations. A contour map for peak ground acceleration is constructed for ground motions generated by the Pohang earthquake using the proposed model.

  • https://doi.org/10.5000/EESK.2018.22.3.211 인용 PDF KSCI

Nanopore Generation in Low Dielectric Organosilicate and SiCOH Thin Films

  • Heo, Kyu-Young;Yoon, Jin-Hwan;Jin, Kyeong-Sik;Jin, Sang-Woo;Oh, Kyoung-Suk;Choi, Chi-Kyu;Ree, Moon-Hor
    • 한국고분자학회:학술대회논문집
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    • 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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    • pp.298-298
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    • 2006

  • There has been much interest in incorporating nanoscale voids into dielectric materials in order to reduce their k value, and thus in producing low-k porous interdielectric materials. One approach to the development of low-k dielectric materials is the templated polycondensation of organosilicate precursors in the presence of a thermally labile, organic polymeric porogen. The other is SiOCH films have low dielectric constant as well as good mechanical strength and high thermal stability through PECVD. In this article we explore the nanopore generation mechanism of organosilicate film using star-shape porogen and SiOCH film using bis-trimethylsilylmethane (BTMSM) precursor.

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포항지진에 대한 원자력발전소 구조물 및 기기의 지진응답분석 (Seismic Response Analysis of Nuclear Power Plant Structures and Equipment due to the Pohang Earthquake)

  • 임승현;최인길
    • 한국지진공학회논문집
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    • 제22권3호
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    • pp.113-119
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    • 2018

  • The probabilistic seismic safety assessment is one of the methodology to evaluate the seismic safety of the nuclear power plants. The site characteristics of the nuclear power plant should be reflected when evaluating the seismic safety of the nuclear power plant. The Korea seismic characteristics are strong in high frequency region and may be different from NRC Regulatory Guide 1.60, which is the design spectrum of nuclear power plants. In this study, seismic response of a nuclear power plant structure by Pohang earthquake (2017.11.15. (KST)) is investigated. The Pohang earthquake measured at the Cheongsong seismic observation station (CHS) is scaled to the peak ground acceleration (PGA) of 0.2 g and the seismic acceleration time history curve corresponding to the design spectrum is created. A nuclear power plant of the containment building and the auxiliary buildings are modeled using OPENSEES to analyze the seismic response of the Pohang earthquake. The seismic behavior of the nuclear power plant due to the Pohang earthquake is investigated. And the seismic performances of the equipment of a nuclear power plant are evaluated by the HCLPF. As a result, the seismic safety evaluation of nuclear power plants should be evaluated based on site-specific characteristics of nuclear power plants.

  • https://doi.org/10.5000/EESK.2018.22.3.113 인용 PDF KSCI