8 research outputs found

    μ²œλΆ€ 퇴적ꡬ쑰 뢄석을 μœ„ν•œ chirp λ°˜μ‘ μ‹ ν˜Έμ˜ 속성뢄석

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    A subbottom layer is composed of different types of sediments or the exposed rock, etc. It represents the different physical properties, depending on facies. Its physical properties and geological characteristic may be useful in the interpretation of geophysical data. Chirp SBP has been widely used to study a subbottom layer classification based on acoustic characteristics analysis. Generally, Chirp SBP provide the seismic data of the envelope type without polarity and phase information. Therefore, Envelope signal is limited to expressing subbottom sediments that represent the various physical properties because it ignores polarity and phase information. In this study, we analyzed attribute results of chirp signal response for a shallow subbottom sedimentary structure. We generated a FM pulse according to the frequency bandwidth, the sampling interval, the window function and composed numerical model using P-wave velocity, density, attenuation coefficient, thickness of transitional layer and roughness standard deviation. We conducted Chirp SBP modeling and derived a chirp raw data. We conducted attributes analysis using a chirp signal response obtained after a matched filter process on the acquired chirp raw data. We confirmed the envelope signal of the corresponding layer and lower layer don’t appear for the coarse sediment, subbottom gas, transitional layer. But, when various attribute methods such as instantaneous frequency and bandwidth were applied to the chirp signal response, the corresponding layer and lower layer could be confirmed. In the field survey, it is considered that the subbottom sediment structure should be analyzed by comparing the results of applying attribute methods such as the instantaneous frequency and bandwidth to the chirp signal response in the area where the corresponding layer and lower layer of envelope signal don’t appear.1. μ„œ λ‘  1 1.1 κ°œμš” 1 2. Chirp SBP 수치λͺ¨λΈλ§ 4 2.1 Chirp SBP의 μŒμ› 6 2.1.1 주파수 λ³€μ‘° νŽ„μŠ€ 6 2.1.2 μœˆλ„μš° ν•¨μˆ˜μ˜ μ’…λ₯˜ 및 νŠΉμ„± 8 2.2 ν•΄μˆ˜ 및 ν•΄μ € 퇴적측에 λ”°λ₯Έ μž„νŽ„μŠ€ λ°˜μ‘ 14 2.2.1 음ν–₯ μ „νŒŒ ν•¨μˆ˜ 14 2.2.2 음ν–₯ 감쇠 15 2.2.3 λΆˆμ—°μ†λ©΄ μΈ΅ 17 2.2.4 마찰 손싀 19 2.3 μ •ν•©ν•„ν„° κ³Όμ • 20 3. μ§€μ§ˆν•™μ  λͺ¨λΈμ— λ”°λ₯Έ 수치λͺ¨ν˜•μ‹€ν—˜ 25 3.1 νƒ„μ„±νŒŒ 속성뢄석 25 3.1.1 μ—”λ²¨λ‘œν”„ 25 3.1.2 μˆœκ°„ μœ„μƒ 27 3.1.3 μˆœκ°„ 주파수 27 3.1.4 μˆœκ°„ λŒ€μ—­ν­ 28 3.2 μ‹€ν—˜λ°©λ²• 29 3.3 μ‹€ν—˜κ²°κ³Ό 30 3.3.1 얇은 μΈ΅ 30 3.3.2 ν‘œμΈ΅μ΄ 쑰립질 ν‡΄μ λ¬Όλ‘œ κ΅¬μ„±λœ 수치λͺ¨λΈ 36 3.3.3 퇴적측 λ‚΄ μ²œλΆ€κ°€μŠ€ 측이 ν¬ν•¨λœ 수치λͺ¨λΈ 41 3.3.4 퇴적측 λ‚΄ λΆˆμ—°μ†λ©΄ 측이 ν¬ν•¨λœ 수치λͺ¨λΈ 46 4. Chirp SBP ν˜„μž₯자료의 속성뢄석에 λ”°λ₯Έ μ²œλΆ€ 퇴적ꡬ쑰 뢄석 53 4.1 Chirp SBP ν˜„μž₯자료 취득 및 처리 53 4.2 속성뢄석 적용 κ²°κ³Ό 56 5. κ²°λ‘  61 κ°μ‚¬μ˜ κΈ€ 64 References 66 Bibliography 74Maste

    A Study on the Maritime Security Jurisdiction of Coastal States in International Law

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    ν•΄μ–‘μ˜ μ€‘μš”μ„±μ„ κ°μ•ˆν•˜μ—¬ ν•΄μ–‘μ˜ κΈ°λŠ₯을 ν•΄ν•˜λŠ” λ§Žμ€ 비전톡적인 μ•ˆλ³΄μœ„ν˜‘μ„ μ–΅μ œν•˜κΈ° μœ„ν•œ κ΅­κ°€κ΄€ν• κΆŒμ— λŒ€ν•΄ 특히 μ—°μ•ˆκ΅­μ„ μ€‘μ‹¬μœΌλ‘œ κ·Έ κ΄€ν• κΆŒν–‰μ‚¬μ™€ κ΄€λ ¨ν•˜μ—¬ μ‚΄νŽ΄λ³Έλ‹€. 이λ₯Ό μœ„ν•΄, ν•΄μ–‘μ•ˆλ³΄ 및 ν•΄μ–‘μ•ˆλ³΄μœ„ν˜‘ 그리고 κ΅­κ°€κ΄€ν• κΆŒ 및 ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ λ“±μ˜ κ°œλ…μ— λŒ€ν•΄ μ‚΄νŽ΄λ³΄κ³ , 이λ₯Ό μ€‘μ‹¬μœΌλ‘œ μ—¬λŸ¬ μ•ˆλ³΄μœ„ν˜‘λ³„λ‘œ μœ μ—”ν•΄μ–‘λ²•ν˜‘μ•½μƒ μ—°μ•ˆκ΅­μ΄ κ΄€ν• κΆŒμ„ 적절히 행사할 수 μžˆλŠ”μ§€ μ‚΄νŽ΄λ³΄κ³  ν™•μΈλœ λ¬Έμ œμ μ„ κ°œμ„ ν•˜κΈ° μœ„ν•œ κ°œμ„ λ°©μ•ˆμ„ μ œμ‹œν•œλ‹€.제1μž₯ μ„œλ‘  제2μž₯ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒμ— κ΄€ν•œ 일반이둠 제1절 ν•΄μ–‘μ•ˆλ³΄μ˜ κ°œκ΄€ 제2절 ν•΄μ–‘μ—μ„œμ˜ κ΅­κ°€κ΄€ν• κΆŒκ³Ό ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제3μž₯ ν•΄μ–‘μ•ˆλ³΄μœ„ν˜‘μ— κ΄€ν•œ κ΅­μ œλ²•μ²΄κ³„ 및 μ‹€νƒœ 제1절 μœ μ—”ν•΄μ–‘λ²•ν˜‘μ•½μƒμ˜ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제2절 SUAν˜‘μ•½μƒμ˜ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제3절 PSI와 ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제4μž₯ μ˜ν•΄ 및 μ ‘μ†μˆ˜μ—­μ—μ„œμ˜ μ—°μ•ˆκ΅­ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제1절 μ˜ν•΄μ—μ„œμ˜ μ—°μ•ˆκ΅­ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제2절 μ ‘μ†μˆ˜μ—­μ—μ„œμ˜ μ—°μ•ˆκ΅­ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제5μž₯ 배타적 κ²½μ œμˆ˜μ—­ 및 λŒ€λ₯™λΆ•μ—μ„œμ˜ μ—°μ•ˆκ΅­ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제1절 배타적 κ²½μ œμˆ˜μ—­μ—μ„œμ˜ μ—°μ•ˆκ΅­ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제2절 λŒ€λ₯™λΆ•μ—μ„œμ˜ μ—°μ•ˆκ΅­ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제6μž₯ κ³΅ν•΄μ—μ„œμ˜ μ—°μ•ˆκ΅­ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ 제1절 κ³΅ν•΄μ—μ„œμ˜ μ—°μ•ˆκ΅­κ΄€ν• κΆŒ 제2절 ν•΄μ–‘μ•ˆλ³΄μœ„ν˜‘μ— λŒ€ν•œ μ—°μ•ˆκ΅­κ΄€ν• κΆŒμ˜ ν™•μž₯ 제7μž₯ ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ κ΄€λ ¨λ²•μ œμ˜ 문제점 및 κ°œμ„ λ°©μ•ˆ 제1절 ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ κ΄€λ ¨λ²•μ œμ˜ 문제점 제2절 ν•΄μ–‘μ•ˆλ³΄κ΄€ν• κΆŒ κ΄€λ ¨λ²•μ œμ˜ κ°œμ„ λ°©μ•ˆ 제8μž₯ κ²°

    μ—μŠ€νŠΈλ‘  날인 ν΄λ¦¬μ΄λ―Έλ“œμ— κ΄€ν•œ 연ꡬ

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    Thesis (master`s)--μ„œμšΈλŒ€ν•™κ΅ λŒ€ν•™μ› :μž¬λ£Œκ³΅ν•™λΆ€,2003.Maste

    Identification of genome-wide DNA double strand break sites in gastric cancer cell lines

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    MasterA DNA double-strand break (DSB) is the most dangerous DNA lesions with serious consequences for cell survival. The non-homologous end joining (NHEJ) repair pathway is the main repair mechanism in mammals. To identify the DNA double-strand break sites which associated with NHEJ in human gastric cancer cells, we performed ChIP-Seq using antibodies against Ku 70/80, DNA-PKcs, XRCC4 and Ξ³H2AX. The NHEJ pathway-associated proteins were enriched at 253 sites in SNU484 and 202 sites in KATOIII cell lines. In order to identify whether the NHEJ pathway associated protein binding regions are potential DSB sites, we investigated DNase I digestion efficiency and analyzed the features of the single-nucleotide polymorphism (SNP) frequency. The potential DSB sites showed increased DNase I digestion efficiency and SNP frequency. The Gene Ontology (GO) analysis revealed that the β€œcell cycle” related term in the biological pathway was enriched at the potential DSB sites. The most enriched motif from sequence analysis of the potential DSB sites was the STAT5 binding sequence. For validation of the potential DSB sites, we performed ChIP-PCR and detected positive enrichment at selected potential DSB sites. The increased level of specificity protein 1 (SP1) was reported in the diffuse type of gastric cancer cells such as SNU484 and KATOIII and our potential DSB site was further examined to see their overlap with SP1 binding sites. Relatively high enrichment of SP1 at potential DSB sites was detected in diffuse types rather than intestinal types. We could conclude that the DSBs spontaneously occurred without any external stimuli and the NHEJ pathway related proteins were bound to the DSB sites. From the genome-wide mapping and sequence analysis in gastric cancer cells, the true spontaneous DSB sites were identified and increased the possibility of developing new cancer diagnostic markers using the DSB sites
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