• 제목/요약/키워드: tectonics

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On the Crustal Deformation Study Using Permanent GPS Station in Korea Peninsula

  • YUN, Hong-Sic;CHO, Jae-Myoung
    • Korean Journal of Geomatics
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    • 제3권2호
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    • pp.141-148
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    • 2004
  • This paper deals with the characteristics of strain pattern by using permanent GPS stations in Korea in terms of seismic activity and tectonics. Fourteen GPS stations involved in precise baseline vector solution and horizontal strain components were calculated using the differences of mean baseline from ten deily solutions during the time span of three years. The mean rate of maximum shear strain if 0.12 $\mu$/yr. The mean direction of principal axes of the compression is about $85^{\circ}$ N.

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Seismicity of the Korean peninsula and its Relation with plate tectonics

  • Kim, So Gu;Hyun, Byung Koo
    • 자원환경지질
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    • 제11권2호
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    • pp.69-80
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    • 1978
  • The seismicity of the Korean peninsula (2A. D.-1977) is investigated temporally and spatially to estimate seismic hazard zones in the Korean peninsula, based on macroseismic data from description of the historical literature and reported data by JMA, ERI, World Data Center-A, and ISC.

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실무교육에 대한 간호원의 학습요구 (Learning Needs of Registered Nurse for Insertive Education)

  • 현경선
    • 대한간호학회지
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    • 제6권2호
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    • pp.32-38
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    • 1976
  • The advanced knowledge is increasing day by day due to the progress of medicine and tectonics, the increase of nursing research nowadays. In parallel with these, nursing profession has a need of the nursing care with improvement of new Knowledge, tectonics and nursing procedure through the insertive education. Therefore, this study was attempted to investigate that to grasp learning need of nurses about inservice educational play a pivotal role in the progress of inservice education. This study was made from 242 clinical nurse at 4 hospitals in Seoul and through question- are consisting of 1) ideological part 2) basic sciences 3) nursing part 4) administrative part 5) the others from 10 July '75 to 7 Oct. '75. The data were treated by percentage, Licker method, arid chi- square examination. Significant difference p is 0.05. The results of this studies are as follows : A. learning needs of nurses 1) Generally the learning needs of nurses is very high. 2) Of the learning need of inservice education for nurses, the highest learning need is as follow (Table 2 ) 1 st : Charting 2 nd : The ability of grasping patient's needs and problems. 3 rd ; The contents and the methods of the advanced nursing skill. 4 th ; The importance of team work 5 th ; The general knowledge of the various disease 6 th : The decision of a propriety nursing diagnosis under the general condition. 7 th ; The introduction of the new nursing theory. 8 th : The Nurses role and the responsibility in emergency and disaster. 9 th : The improvement of nursing skill for the perfect interpersonal relationship. l0th ; Cultural education: B . Verification of hypothesis 1. Hypothesis I , learning needs of nurses and educational level of nurse will be correlated, is rejected (Table 3 ) 2. Hypothesis II, learning need of nurses and duties of post will be correlated, is rejected (Table 4) 3. Hypothesis III, learning need of nurse and clinical experience of nurses will be correlated, is rejected (Table 5).

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위성 영상선구조의 지질학적 응용 - 의성소분지의 경우 (Geological Application of Lineaments from Satellite Images - A Case Study of Euiseong Sub-basin)

  • 김원균;김상완;원중선;민경덕;김정우
    • 대한원격탐사학회지
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    • 제16권1호
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    • pp.25-36
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    • 2000
  • 위성영상으로부터 추출된 선구조가 지질 및 지질구조와 연관되어 해석이 가능한 지 알아보기 위하여 의성소분지에서 추출된 선구조와 지표지질 조사 결과를 비교하였다. 위성영상으로부터 추출된 선구조는 N20$^{\circ}$~30$^{\circ}$E, N60$^{\circ}$~70$^{\circ}$E, N60$^{\circ}$~70$^{\circ}$W의 주방향을 보이며, 이는 단층 주향 및 절리의 방향을 대표한다. 한편 퇴적층내의 선 구조들은 밀양소분지와 의성소분지의 경계인 팔공산융기대를 경계로 이북에서는 북북동, 서북서 방향이, 이남에서는 동북동 방향의 선구조가 우세하게 나타나, 퇴적상을 기준으로 결정된 기존의 경계와 잘 일치한다. 따라서 위성영상을 이용한 선구조는 광역지질구조 및 지표지질 연구에 매우 효과적으로 사용될 수 있다.

지각판 운동 모델의 변천과 현황 (Lithospheric Plate Motion Model: Development and Current Status)

  • 나성호;조정호
    • 한국지구과학회지
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    • 제43권6호
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    • pp.661-679
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    • 2022
  • 대륙이동설로부터 시작되었고 이후 고지자기 및 해저퇴적물 등의 증거들에 의한 해저확장설을 통하여 정립된 판구조론은, 지각의 운동을 몇 개의 강체 판들이 비록 느리지만 수억 년 이상의 긴 시간 동안 꾸준히 일어나는 움직임으로서 설명하였다. 초기에는 지각판의 속도를 주로 수백만 년 동안의 고지자기 역전의 잔류 기록에 의거하여 판들 간의 상대적 운동으로 추산하였는데, 1980년대 이후에는 우주측지 기법들을 이용하여 현재 시점의 판운동을 직접적으로 조사할 수 있게 되었고, 일부 지역에서 판의 변형이 일어나는 것도 확인하게 되었다. 본 해설에서는 (1) 초기의 상대적인 판운동을 나타내는 모델들을 돌아보고, (2) 무회전 좌표계의 이론과 절대판운동 모델들을 요약-기술하며, (3) 판내부의 변형을 포함하는 최근의 모델을 소개하는 한편, (4) 국제 지구 기준계에 채택된 판운동 모델을 간략히 기술하였고, 끝으로 (5) 근래에 보고된 남미, 남극, 유럽 등 몇 지역과 (6) 한반도 및 동북아의 지각판 움직임 연구를 각각 소개하였다.

한국남부(韓國南部)의 백악기말(白堊紀末) 이후(以後)의 화성활동(火成活動)과 광화작용(鑛化作用)에 대(對)한 판구조론(板構造論)의 적용성(適用性) 연구(硏究)( I ) (Applicability of plate tectonics to the post-late Cretaceous igneous activities and mineralization in the southern part of South Korea( I ))

  • 민경덕;김옥준;윤석규;이대성;주승환
    • 자원환경지질
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    • 제15권3호
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    • pp.123-154
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    • 1982
  • Petrochemical, K-Ar dating, Sand Rb/Sr isotopes, metallogenic zoning, paleomagnetic and geotectonic studies of the Gyongsang basin were carried out to examine applicability of plate tectonics to the post-late Cretaceous igneous activity and metallogeny in the southeastern part of Korean Peninsula. The results obtained are as follows: 1. Bulgugsa granitic rocks range from granite to adamellite, whose Q-Ab-Or triangular diagram indicates that the depth and pressure at which the magma consolidated increase from coast to inland varying from 6 km, 0.5-3.3 kb in the coastal area to 17 km, 0.5-10 kb in the inland area. 2. The volcanic rocks in Gyongsang basin range from andesitic to basaltic rocks, and the basaltic rocks are generally tholeiitic in the coastal area and alkali basalt in the inland area. 3. The volcanic rocks of the area have the initial ratio of Sr^{87}/Sr^{86} varying from 0.706 to 0.707 which suggests a continental origin; the ratio of Rb/Sr changing from 0.079-0.157 in the coastal area to 0.021-0.034 in the inland area suggests that the volcanism is getting younger toward coastal side, which may indicate a retreat in stage of differentiation if they were derived from a same magma. The K_2O/SiO_2 (60%) increases from about 1.0 in the coastal area to about 3.0 in the inland area, which may suggest an increase indepth of the Benioff zone, if existed, toward inland side. 4. The K-Ar ages of volcanic rocks were measured to be 79.4 m.y. near Daegu, and 61.7 m.y. near Busan indicating a southeastward decrease in age. The ages of plutonic rocks also decrease toward the same direction with 73 m.y. near Daegu, and 58 m.y. near Busan, so that the volcanism predated the plutonism by 6 m.y. in the continental interior and 4 m.y. along the coast. Such igneous activities provide a positive evidence for an applicability of plate tectonics to this area. 5. Sulfur isotope analyses of sulfide minerals from 8 mines revealed that these deposits were genetically connected with the spacially associated ingeous rocks showing relatively narrow range of ${\delta}^{34}S$ values (-0.9‰ to +7.5‰ except for +13.3 from Mulgum Mine). A sequence of metallogenic zones from the coast to the inland is delineated to be in the order of Fe-Cu zone, Cu-Pb-Zn zone, and W-Mo zone. A few porphyry type copper deposits are found in the Fe-Cu zone. These two facts enable the sequence to be comparable with that of Andean type in South America. 6. The VGP's of Cretaceous and post Cretaceous rocks from Korea are located near the ones($71^{\circ}N$, $180^{\circ}E$ and $90^{\circ}N$, $110^{\circ}E$) obtained from continents of northern hemisphere. This suggests that the Korean peninsula has been stable tectonically since Cretaceous, belonging to the Eurasian continent. 7. Different polar wandering path between Korean peninsula and Japanese islands delineates that there has been some relative movement between them. 8. The variational feature of declination of NRM toward northwestern inland side from southeastern extremity of Korean peninsula suggests that the age of rocks becomes older toward inland side. 9. The geological structure(mainly faults) and trends of lineaments interpreted from the Landsat imagery reveal that NNE-, NWW- and NEE-trends are predominant in the decreasing order of intensity. 10. The NNE-trending structures were originated by tensional and/or compressional forces, the directions of which were parallel and perpendicular respectively to the subduction boundary of the Kula plate during about 90 m.y. B.P. The NWW-trending structures were originated as shear fractures by the same compressional forces. The NEE-trending structures are considered to be priginated as tension fractures parallel to the subduction boundary of the Kula plate during about 70 m.y. B.P. when Japanese islands had drifted toward southeast leaving the Sea of Japan behind. It was clearly demonstrated by many authors that the drifting of Japanese islands was accompanied with a rotational movement of a clock-wise direction, so that it is inferred that subduction boundary had changed from NNE- to NEE-direction. A number of facts and features mentioned above provide a suite of positive evidences enabling application of plate tectonics to the late Cretaceous-early Tertiary igneous activity and metallogeny in the area. Synthesizing these facts, an arc-trench system of continental margin-type is adopted by reconstructing paleogeographic models for the evolution of Korean peninsula and Japan islands. The models involve an extention mechanism behind the are(proto-Japan), by which proto-Japan as of northeastern continuation of Gyongsang zone has been drifted rotationally toward southeast. The zone of igneous activity has also been migrated from the inland in late-Cretaceous to the peninsula margin and southwestern Japan in Tertiary.

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지하(地下) 석탄층(石炭層) 구조(構造)를 이용한 도계(道溪) 지역의 단층과 습곡구조의 특성 (Characteristics of Faults and Folds by Using Subsurface Structural Data in Dogye Area, Korea)

  • 이동우;우경식;서광수
    • 자원환경지질
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    • 제27권3호
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    • pp.313-321
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    • 1994
  • Structural interpretation by using subsurface attitude of coal seam and outcrop patterns of folds and faults shows that wrench and thrust tectonics took place simultaneously in the study area. From the interference patterns of fold axes, three generations of folding are suggested: $F_1$ (NE-SW), $F_2$ (N-S), and $F_3$ (E-W). Differential displacement of rock mass from north to south yields to E-W fold and Osypcheon Fault. Geometry of subsurface coal seam show different patterns comparing to those of surface outcrop because of shallow-depth crustal shortening which took place post Cretaceous.

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경상분지 중앙부의 구조발달사외 화산활동사 (Aspects of Tectonics and Volcanism Recorded in Cretaceous Medial Kyongsang Basin, SE Korea)

  • 장기홍;박순옥
    • 자원환경지질
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    • 제30권2호
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    • pp.143-151
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    • 1997
  • The history of the Palgongsan Fault comprises the growth-fault, the dormant and the strike-slip phases. Dissecting the Palgongsan Granite, the Palgongsan Strike-slip Fault, which is the product of the final phase, sinistrally offset about 5.5 km as shown in the dislocation of the Hasandong Formation. Faulting, sedimentation and igneous activity were inter-related in the early phases of the Palgongsan Fault. Some other faults such as the Dansan Pond Fault and the Hayang Fault have also been discovered, and their some stratigraphic implications and the ages of faulting are discussed. The anomalous development of the Jindong Formation in the study area and the related stratigraphic problems are discussed. It has been confirmed that the Konchonri Formation deposited over the Chaeyaksan Volcanic Formation in spite of the recent doubts on their such stratigraphic relation. The chronological sequence of the volcanisms of the Kyongsang Basin has been summarized.

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현대 건축을 통해서 본 비판적 지역주의의 개념적 표현 (A Study on the Design Concept of Critical Regionalism through the Contemporary Architecture)

  • 정효경
    • 한국실내디자인학회논문집
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    • 제13권6호
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    • pp.20-28
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    • 2004
  • The purpose of this research is to understand and explore the view of the current architectural and interior design approach through Critical Regionalism created as one of the movements opposed to Contemporary. Critical Regionalism as a critical view about the contemporary architecture is based on integrated critical thinking toward a built environment surrounded by regional facts such as natural environment, materials, light, weather, unique culture where exist the specific places. The architectural themes of Critical Regionalism based on Kenneth Frampton's view and interpretation about contemporary architecture can be understood as follows; the concept of the place, tectonics, expression by abstraction and phenomenologlcal interpretation. Critical Regionalism has two distinctive features, which are the connection to the Contemporary and critical aspects to develop processes of an architectural design.

지각변동 파라메터의 정밀계산을 위한 2차원 필터링 기법의 적용 (Application of Two Dimensional Filtering Technique for the Precision Calculation of Crustal Deformation Parameters)

  • 윤홍식
    • 한국측량학회지
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    • 제18권1호
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    • pp.75-83
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    • 2000
  • 본 논문에서는 신ㆍ구 측지기준점 측량성과를 이용하여 지진활동과 지각운동에 의한 우리나라의 일반적인 변형의 패턴을 조사하기 위한 것으로서 2차원 필터링기법을 적용하여 변형 파라메터들을 계산하였다. 2차원 필터링을 적용하여 계산된 변형 파라메터들중에서도 측량오차를 고려하여 최대전단 변형률과 주응력의 방향만을 고려한 결과로는 최대전단변형률의 평균속도는 $0.12{\mu}/yr$, 주응력 방향은 $N80^{\circ}E$로 나타났다.

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