• 한국지구과학회지
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• 제30권5호
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• pp.646-659
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• 2009

The early Ordovician graptolites from the upper part (Tumok Member) of the Mungok Formation of the Namaeri and Baeiljae sections at Yeongwol consist of five species belonging to five genera. They are Adelograptus cf. tenellus, Callograptus sp., Dendrograptus suni, Dictyonema sp., and Psigraptus jacksoni. Of these 5 species, Psigraptus is the most excellent index fossil for international correlation with the early Ordovician strata. Adelograptus cf. tenellus from the Mungok Formation of the Namaeri and Baeiljae sections is also recognized with especially short stipe relative to Adelograptus tenellus. Three graptolite zones (such as Adelograptus, Psigraptus, and Dendroid type zones) are correlated with those of Canada, Australia, and China, respectively. The upper part of the Mungok Formation is assigned to the late Tremadocian.

• 한국과학교육학회지
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• 제29권7호
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• pp.759-766
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• 2009

This study was conducted to examine 10 Belizean teachers' conceptions about the causes of seasonal change. This research was conducted with an integrated method using a open ended written test and an interview which included a drawing. There are four categories, explained by the teachers, as the causes of seasonal changes. They are; climate, rotation of the earth on its axis, revolution of the earth around the sun, and the tilting of earth's axis as it revolves. Most teachers misunderstood that the first of three categories was responsible for seasonal change. Second, it is more effective to use the integrated method shown in this research than to use only a written test when seriously investigating the causes and understanding of seasonal change. Third, 8 out of 10 teachers could not correctly explain the causes of seasonal change. The reasons for seasonal change seemed to be hard for the informants to understand even though it was taught in elementary, middle, high school, and college elective classes.

• 한국환경과학회지
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• 제22권8호
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• pp.1053-1062
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• 2013

The shortwave aerosol direct radiative forcing (SWARF) was analyzed using the Clouds and Earth's Radiant Energy System (CERES) data in the East Asian region from 2001 to 2010. In the Yellow Sea and the Korean Peninsula, located in the leeward side of China, significantly negative high SWARF at the top of atmosphere (TOA) occurs due to the long-range transport of anthropogenic (e.g. sulphate) and natural aerosols (e.g. mineral dust) from the East Asian continent. Conversely, eastern China has much higher levels of SWARF at the surface (SFC) due to anthropogenically emitted aerosol than in the Yellow Sea and the Korean Peninsula. Since the radiative forcing of aerosols in the atmosphere are different in type, aerosol types were classified into sea salt+sulphate, smoke, sulphate and dust by using satellite data. The analysis on the SWARF by the classified aerosol types indicated that sulphate occupies a predominant portion of the atmosphere in the Yellow Sea and the Korean Peninsula in the summer. In particular, the annual averages of the summer TOA SWARF increased in the Yellow Sea and the Korean Peninsula from 2001 to 2010.

• 대한지구과학교육학회지
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• 제14권2호
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• pp.80-94
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• 2021

본 연구에서는 고등학교 지구과학 I 고체지구 영역에서 컴퓨팅 사고력 기반의 교수학습활동을 개발하고, 그 효과와 시사점을 살펴보았다. 이를 위해 총 8차시에 해당하는 문제해결 중심 언플러그드 활동을 개발하고, 이를 A 고등학교 학생 65명을 대상으로 적용하였다. 교수학습활동을 실시한 결과 학생들의 컴퓨팅 사고력과, 컴퓨팅 사고력에 대한 인식 측면에서 유의미한 변화를 확인하였다. 활동 이후 학생들의 자기보고서의 응답과 면담자료를 토대로 지구과학 문제해결과정에서 컴퓨팅 사고력과 컴퓨팅 사고력에 대한 인식에 영향을 준 요인을 살펴보았다. 또한 컴퓨팅 사고력 기반의 교수학습설계와 진행의 측면에서 고려해야 하는 요소에 대한 시사점을 도출하였다. 연구 결과를 토대로 지구과학을 포함한 다양한 교과목을 통한 컴퓨팅 사고력 개발을 위한 교수학습활동의 필요성과 운영방안을 제안하였다.

• 대한지구과학교육학회지
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• 제7권3호
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• pp.338-346
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• 2014

In this study, find out of recognition of the effect of science, society and ethical aspects on natural disasters and understanding degree of knowledge applying for SSI class aimed at elementary pre-service teachers by developing SSI training program of the 'Earth and Space' field. Also, after SSI class application we examined the change perceptions of elementary pre-service teachers. SSI training program was that elementary pre-service teachers participated in the SSI class of a variety of subjects in the field of 'Earth and Space' and directly joined in the decision-making process and reflectional discussion with colleagues as conducted in this class reflective discussion with the pre-primary teachers pre-service teachers. Elementary pre-service teachers were understanding of the nature of the science and to understand in more depth about the SSI class characteristics. This study, second grade 115 people who was taking 'science and teaching materials' course in B National University of Education at B city participated. In order to apply for SSI class, one semester based on 15 weeks until seven weeks were science and teaching materials and based on the nature of science, after 8 weeks we set the theme of the contents related to the Earth and space and give lesson applied for SSI. During 8 weeks, test subjects 4 classes were taking 50 minutes a week 100 minutes. First time has theoretical lessons in topics related to the 'Earth and space' and on the second week, each classes participate in the decision-making processes respectivly by dicussing and debating on the first week's topic as regarding social and moral aspects of it. We obtained the following results. First, elementary pre-service teachers were acquiring the results of 67% in the knowledge aspects of the 'Earth and space'. This result was determined that most of the elementary pre-service teachers were liberal arts in high school. Second, while participating in the SSI class, elementary pre-service teachers were concretely aware of the nature of SSI and the characteristics of the class. Third, the elementary pre-service teacher are thaught that introduction education courses about 'Earth and space' are needed but most of the students responded that this would require a lot of effort of teachers. This was derived from not familiar class form that did not fulfill in the science teaching methods until now.

• 대한지구과학교육학회지
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• 제11권2호
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• pp.107-115
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• 2018

지구의 모양을 아는 것은 지구과학 교육에서 중요한 성취기준이다. 이 연구의 목적은 학교 급별로 효과적인 지구의 모양 실험을 조사하여 학교 탐구실험에 도움을 주고자하는데 있다. 이를 위해 연구자는 지구의 모양을 학습하기 위한 다양한 실험 방법을 제시하고, 예비교사 26명에게 초등학교, 중 고등학교, 대학교 학생들에게 적절한 실험이 무엇인지 조사하였다. 그 결과 효과적인 지구의 모양 실험에 있어서 학교 급별로 차이가 있었다. 예비교사는 초등학생들에게는 '항구로 돌아오는 배의 돛 관찰하기 실험이 효과적일 것으로 생각하고 있었다. 그리고 중 고등학교 학생들에게는 지구의 위도에 따른 북극성 고도 비교하기 실험, 대학교 학생들에게는 지면의 높이에 따른 시야의 차이 비교하기 실험이 효과적일 것이라고 응답하였다. 예비교사는 학교 급별 효과적인 지구의 모양 실험을 선택할 때에는 실험 방법의 난이도, 추상적인 사고와 배경지식의 깊이 등이 고려되어야 한다고 생각하였다.

• 지구물리
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• 제3권3호
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• pp.201-212
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• 2000

1991년 12월 이후 약 3년 동안 남한 중서부지역에서 발생할 미소지진을 한국교원대 관측망을 통해 관측하고 그 자료를 분석하였다. 월 평균 약 2회의 지진이 발생하여 낮은 지진활동도를 나타내며, 시간적으로 발생빈도에 뚜렷한 변화를 나타내지 않고 있다. 지난 3년간의 관측자료에 근거한 빈도-규모 관계식에서의 b값은 1.15이다. 진앙은 주로 옥천대에 많이 분포하고 있으며, 특히 옥천대와 영남육괴의 경계부인 문경지역, 보은-속리산-영동지역, 군산-논산 지역에 상대적으로 많이 분포하는 경향을 보인다.

• 한국지구과학회지
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• 제30권4호
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• pp.495-512
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• 2009

본 연구에서는 영재아를 위한 어머니 역할을 알아보기 위하여 국내 외 선행연구를 종합하여 영재부모 양육 방식을 정리해서 분류해 보았다. 또한 이를 가지고 한국과학영재학교에 재학 중인 9명 학생들의 어머니들을 대상으로 자녀 양육 사례에 적용하여 한국적 맥락 안에서의 영재교육과 관련된 부모 역할 동향을 확인하고자 하였다. 연구 결과의 데이터는 사전에 준비한 질문과 질적 데이터 수집에 사용되는 반구조화된 인터뷰 방식으로 수집하였다. 먼저 선행 연구 고찰을 통해서 영재 부모의 다양한 역할을 크게 교육자, 후원자, 대화자, 훈육자로서의 부모로 분류하는 틀을 개발 하였다. 이를 가지고 인터뷰를 분석한 결과, 인터뷰 대상자들의 역할은 선행연구에서 제시된 영재 부모 역할이 거의 유사하게 나타나고 있었다. 다만 사례 분석 결과 우리나라의 영재교육에서는 특별히 어머니가 자녀의 인적 네트워크 형성에 직접적으로 관여하고 있는 경우와 학령기 전에 문자 습득의 과정이 부모의 영향뿐만 아니라 가정에서 형제자매를 통해서 자연스럽게 이루어지도록 조절해 주는 부모 역할이 두드러지게 나타나고 있음을 발견할 수 있었다.

• 한국초등과학교육학회지:초등과학교육
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• 제34권3호
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• pp.288-296
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• 2015

This study aimed to analysis of concepts and inquiry activities related to the 'Earth Science' area in the South Korean elementary school textbooks to the current and to seek the improvement of future textbook. For the study, we were collected South Korean elementary school textbooks to the current. After the collection had been made, we were analyzed related to the 'Earth' area in the South Korean elementary school textbooks and were extracted central concepts and inquiry activities. The result of this study: First, there were 'A change in the land', 'Strata and Fossil', 'Volcanoes and Earthquakes', 'Earth and Moon', 'The weather', 'The Solar system and the Star', and 'Seasonal Change' in the central concepts related to the 'Earth' area in the South Korean elementary school textbooks to the current. Second, central concepts were almost the same but the curriculum was changed. Third, inquiry activities also were confirmed to be maintained with little change. This result was believed that it can provide a variety of suggestions at this point in changing the curriculum.

• 한국지구과학회지
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• 제42권4호
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• pp.445-458
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• 2021

Gravity Recovery and Climate Experiment (GRACE) gravimeter satellites observed the Earth gravity field with unprecedented accuracy since 2002. After the termination of GRACE mission, GRACE Follow-on (GFO) satellites successively observe global gravity field, but there is missing period between GRACE and GFO about one year. Many previous studies estimated terrestrial water storage (TWS) changes using hydrological models, vertical displacements from global navigation satellite system observations, altimetry, and satellite laser ranging for a continuity of GRACE and GFO data. Recently, in order to predict TWS changes, various machine learning methods are developed such as artificial neural network and multi-linear regression. Previous studies used hydrological and climate data simultaneously as input data of the learning process. Further, they excluded linear trends in input data and GRACE/GFO data because the trend components obtained from GRACE/GFO data were assumed to be the same for other periods. However, hydrological models include high uncertainties, and observational period of GRACE/GFO is not long enough to estimate reliable TWS trends. In this study, we used convolutional neural networks (CNN) method incorporating only climate data set (temperature, evaporation, and precipitation) to predict TWS variations in the missing period of GRACE/GFO. We also make CNN model learn the linear trend of GRACE/GFO data. In most river basins considered in this study, our CNN model successfully predicts seasonal and long-term variations of TWS change.