한국 서해안 근흥만의 조간대퇴적층 연구 : 층서 및 형성과정

김여상,박수철 한국지구과학회 1992 韓國地球科學會誌 Vol.13 No.1

The stratigraphy and evolution of the intertidal deposit of Gunhung Bay, west coast of Korea, have been studied by analyzing surface sediments, core sediments and subbottom profiles. The surficial sedimentary facies consists of upper mudflat, mixedflat and lower mudflat from high tide level to low tide level. The tidal deposit above the acoustic basement is 5 - 20m thick and can be divided into two sedimentary sequences by a mid-reflector. The boundary of them is identified by long core data. The lower sedimentary unit (sequence B) consists of semi-consolidated, brown sandy muds and is interpreted to be deposisted during Riss-Wurm interglacial period. The upper sedimentary unit(sequence A), which overlies the sequence B unconformably, is about 10m thick and consists of Holocene intertidal sediments. The sequence A consists of mudflat facies at lower part and mixedflat facies at upper part. It indicates that the sequence A is a transgressive sequence. Many V-shaped erosional patterns at the unconformable contact of sequence A and sequence B indicate the existence of old tidal channels formed during the low sea level of the last glacial period. The long-term accumulation rate of sequence A is considered to be 2㎜/yr from core data and it is coincident with the accumulation rate determined by Pb-210 for the PVC core.

한국 남서해안 영광군 염산 조간대의 퇴적상과 퇴적작용

김여상,이덕성 공주대학교 과학교육연구소 2003 과학교육연구 Vol.34 No.-

본 연구의 목적은 한국 서해안의 영광군 염산 해안에 발달한 조간대에서의 퇴적상과 퇴적작용을 조사하는 것이다. 이 조간대로부터 48개의 표층퇴적물 시료가 채취되었고 퇴적구조물들이 조사되었다. 연구지역의 조간대는 조직과 퇴적구조를 기준으로 니퇴적상, 사질실트퇴적상, 모래퇴적상으로 구분된다. 니퇴적상은 고조선 부근에 분포하며, 매우 불량한 분급과 세립질의 말미부분이 매우 우세한 실트와 이토로 이루어졌다. 퇴적구조는 균질층리, 렌즈상 층리, 얇은 교호층리가 관찰되고 있으나 생물교란작용을 많이 받고 있다. 사질실트 퇴적상은 모래퇴적상과 니질퇴적상 사이의 넓은 지역에 분포하고, 퇴적물은 분급이 매우 불량한 사질실트로 구성되어 있고, 퇴적구조는 얇은 교호층리와 렌즈상 층리가 나타난다. 생물퇴적구조가 풍부하다. 모래퇴적상은 저조선 부근에 분포하며, 분급이 양호하고 조립질 말미부분이 우세한 세립모래로 이루어져 있다. 퇴적구조는 고연흔, 대연흔, 사층리 그리고 평형모래엽리가 있다. 염산조간대의 표층퇴적물 분포의 계절변화는 뚜렷하여 겨울에는 모래가 집적되고, 여름에는 모래퇴적물 위에 니(mud)가 두께 50㎝ 이하로 퇴적된다. 퇴적물 분포의 계절적 변화는 계쩔에 따른 바람의 강도에 의해 야기되는 것으로 판단된다. This research aims to examine the intertidal facies and the intertidal sedimentation in YeomsanCoast at Yeonggwang-gun in the southwestern coast of Korea.. 48 surface sediment samples were taken from the intertidal flat. The intertidal flat is divided into three sedimentary facies based on textures and sedimentary structures ; mud facies, sandy silt facies, and sand facies. The mud facies occurs near the high tide level and consists of very poorly sorted and strongly fine skewed silt and mud. The major sedimentary structures are homogeneous bedding, lenticular bedding, and thinly interlayered bedding, but they are poorly preserved because of strong bioturbation. The sandy silt facies is developed on broad areas between sand facies and mud facies. The sediments are very poorly sorted sandy silt. It is characterized by thinly interlayered bedding and lenticular bedding. Biogenic sedimentary structures are abundant. The sand facies occurs near the low tide level and consists of well sorted and coarse skewed fine sand. The sedimentary structures consist of small ripples and megaripples, cross-bedding, and evenly laminated sand. The seasonal change of surface sediments at Yeomsan intertidal flat is distinctive. The sand is accumulated in winter while mud is accumulated in summer. The muddy sediments overlie the sand sediment and their thickness is than about 50 cm in summer. The seasonal change is thought to be caused by the strength of wave activity.

천수만 황도 해안의 조간대에 서식하는 갑각류의 생흔구조

김여상,김정남 한국지구과학회 1992 지구과학교육 학술발표회 Vol.1992 No.-

한국 서해 천수만 북동부에 발달한 제4기 현세 조간대층 하위의 간월도층 연구

김여상,박용안 한국제4기학회 1988 제사기학회지 Vol.2 No.1

한국 서해의 천수만 조간대에 발달한 현세 조간대층의 하위에 선현세 퇴적층이 발견되었는데, 이 퇴적층은 조간대 퇴적환경에서 이루어진 것으로 해석된다. 이 층을 간월도층이라고 명명하였으며, 이 간월도층은 선현세의 간빙기 동안에 퇴적된 것으로 규명되었다. The deposit (named Kanweoldo deposit) unconformably overlain by the Holocene tidal deposit is mainly exposed along the tidal channel of the Sajangpo tidal flat of Cheonsu Bay, west coast of Korea. The Kanweoldo deposit's sedimentary textures, sedimentary structures and erosion surfaces of the stratigraphic events have been investigated. The Kanweoldo deposit is mainly composed of mud, silt and sandy mud. The sedimentary criteria indicating intertidal deposit i.e. lenticular bedding, thinly and coarsely interlayered bedding, wavy lamination and flaser bedding are positively found in the Kanweoldo deposit. The deposit is semi-consolidated and brown in color, and has erosional contact (stratigraphic boundary) with the overlying Holocene tidal deposit. Considering such Kanweoldo deposit's sedimentary characteristics and stratigraphic relation with the Holocene tidal deposit, the Kanweoldo deposit seems to be deposited under intertidal environment during Riss-Wurm interglacial period and subaerially exposed and eroded during the last glacial period.

충청남도 당진군 조간대 퇴적상에 관한 연구

이한규,김여상 공주대학교 사범대학 과학교육연구소 1999 과학교육연구 Vol.30 No.1

충청남도 당진군에 발달한 조간대 퇴적물의 조직특징과 집적률을 측정하여 퇴적상 분포, 자갈의 근원, 그리고 퇴적물의 침식 및 퇴적추이를 규명하였다. 조간대의 표층퇴적상은 만조선에서 저조선 방향으로 자갈 퇴적상, 사질실트 퇴적상, 실트 퇴적상으로 분포하고 있다. 자갈 퇴적상은 만조선 부근의 상부조간대에 좁게 분포하며, 자갈의 형태는 대부분 compact platy, compact bladed, compact elongate, platy, bladed, elongate로 분류된다. 자갈의 평균 원마도는 subrounded이며, 평균 구형도는 보통의 구형도(moderate sphericity)이다. 자갈의 형태 분석에 의하면 자갈은 제4기의 선상지 퇴적층으로부터 기원된 것이다. 사질실트 퇴적상은 중조선에서부터 저조선 까지 분포하며 퇴적물의 평균입도는 조립실트이고, 분급은 매우 불량하다. 실트 퇴적상은 중조선 일부와 저조선에 결쳐 분포하며 평균입도는 중립실트이고, 분급은 매우 불량하다. 세립질 퇴적상의 퇴적물은 가을과 겨울에는 침식이 진행되었고 봄과 여름에는 퇴적이 되었다. 이것은 계절풍과 지형의 영향에 기인된 해파에너지의 강도에 영향을 받은 것으로 해석된다. The sedimentary facies, source of gravel and seasonal changes of erosion and deposition are studied by analyzing surface sediments and accumulation rates in the intertidal flat of Tangjin-gun coast of Chungnam province. The intertidal flat is divided into three sedimentary facies based on textures. Gravel facies is distributed at the narrow zone of upper tidal flat. Gravel form is classified with six main types of compact platy, compact bladed, compact elongate, platy, bladed, and elongate. Mean roundness is subrounded(0.39) and mean sphericity is moderate sphericity(0.68). Gravel is mainly derived from alluvial fan deposits owing to shape, and roundness-sphericity relationship diagram. Sandy silt facies is widespread from the middle to the low tidal flat. It consists of very poorly sorted coarse silt. Silt facies occurs at the central part of intertidal flat from the middle to the low tidal flat. It consists of very poorly sorted medium silt. The intertidal flat sediments were eroded in autumn and winter, and deposited in spring and summer due to the strength of wave activity by the seasonal wind.

과학교육계 학과 교육과정의 현황 및 개선방안 : 지구과학교육과의 교육과정을 중심으로 With Reference to Earth Science Teacher Educational Curriculum

김여상,박영철 공주대학교 사범대학 과학교육연구소 1995 과학교육연구 Vol.26 No.1

본 연구는 사범대학 과학교육계학과의 현행 교육과정 현황을 조사·분석하고 이것을 근거로 교육과정을 개선하기 위한 방안을 제시하는 것이다. 1992년도 이후에 발행된 11개 대학의 대학요람과 지구과학교육과의 교과과정표가 분석되었다. 교육과정은 사범대학의 정체성이 확보되도록 재구성되어야 하며 교과교육과목은 전공영역에 포함시키고, 일반과학과목도 계열기초에 소영역으로 구분되어 전공영역에 포함시켜 운영되는 것이 바람직하다. 과학교과교육과목은 최소한 12학점을 이수하도록 하며, 일반과학과목의 학점수도 40학점으로 늘리는 것이 바람직하다. 지구과학내용교과목중에서 유사한 과목들은 통합된 형태의 교과목으로 개설되는 것이 필요하다. The purpose of this study is to propose the improvement plan of science teacher educational curriculum in college of education. The bulletins and earth science curricula of 11 universities were examined and analyzed in terms of four sections: curriculum organization, subjects of earth science education, basic science subjects, and majors of earth science. The curriculum of science teacher education should be reconstructed for the identity of college of education. Science education subjects and basic science subjects need to be involved in a major field. Science education subjects should be taken at least 12 credits. More emphasis should be given on the basic science subjects, which had better be taken upto 40 credits. Major subjects that the contents are similar to each other need to be combined into one subject.

淺水灣 沙長浦 海岸의 朝間帶 表面堆積物의 分布에 관한 硏究

金黎相 공주대학교 사범대학 과학교육연구소 1987 과학교육연구 Vol.19 No.1

Total 102 surficial sediment samples were taken from the intertidal flat of Sajangpo basin in Cheonsu Bay to study the sediment distribution and depositional processes. The intertidal flat sediments are divided into eight types based on grain size data. The eight types are mud, silt, sandy mud, sandy silt, gravelly mud, gravelly muddy sand, silty sand, and sand. Each type is characterized by textural characteristics. These sediment types occur in three patterns from high to low tide zonation. The landward-fining distribution is controlled by the relative time of submergence across the intertidal flat and concurrent changes of tidal current and wavy activity, lag effect, and flood-dominated time-velocity asymmetry. Eastern intertidal sediments are coarser than western ones. This results from the steep slope of the eastern intertidal flat and strong wavy activity along the eastern coast by predominant WNW-NW and S-SW wind. Local disitribution of coarse grained sediments near high tide level is due both to the erosion of exposed bed rock and to the addition of beach sediments by wave and tidal current.

中學校 科學科의 實驗實習 敎材의 開發硏究(Ⅲ)

尹世重,趙泰璟,吳濟直,金溫植,金黎相 공주대학교 사범대학 과학교육연구소 1983 과학교육연구 Vol.15 No.1

Teaching materials available for the effective performance of laboratory exp-erimental work in middle school were developed: Physics part ; A measuring apparatus of uniformly accelerated motion and normal force of inclined plane was developed. Chemistry part ; An imploved Eudiometer applicable in measuring reaction mole ratio and usful for a gas generating apparatus was developed. Biology part ; convenient teaching materials observing law of dominance, law of segregation, law of independence, incomplete dominance and dihybrid cross were developed. Earth science part ; A laboratory teaching materials observing formation of wave, current and graded bedding, and identification of sedimentary rocks were developed. Putting the above results of study together, the integrated suggestions were made to the effective development of science education in middle school : 1. The contents of science textbook should be simplified to the direction of the understanding of essential principles and concept. 2. The development and dirtrihbution of various supplementary teaching materials (film, T.P., cassettes film, supplementary textbook, program teaching materials individual learning materials) are required. 3. The experimental laboratory should be equipped with common instruments and equipements. 4. Efforts and time are needed to science teachers, and so remission of sundry duties and arrangement of assistant are hopefully considered. 5. Teacher's research activities should be encouraged by administrative route or relevant institute.

모바일 클라우드 환경에서 안전한 데이터 접근 제어에 관한 연구

김시정,여상수 한국디지털정책학회 2013 디지털융복합연구 Vol.11 No.2

연구발표 초록 - 특강 ( 공업화학 (Ⅱ) ) : SHS 공정에 의한 첨단 세라믹의 합성

김상환(Sang Hwan Kim),여상철(Sang Cheol Yeo),박원훈(Won Hoon Park) 한국화학공학회 1991 춘계학술발표회 Vol.- No.-