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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean earth science society
Journal Basic Information
Journal DOI :
The Korean Earth Science Society
Editor in Chief :
Volume & Issues
Volume 27, Issue 7 - Dec 2006
Volume 27, Issue 6 - Dec 2006
Volume 27, Issue 5 - Oct 2006
Volume 27, Issue 4 - Aug 2006
Volume 27, Issue 3 - Jun 2006
Volume 27, Issue 2 - Apr 2006
Volume 27, Issue 1 - Feb 2006
Selecting the target year
The Effects of the Group Reward and Cooperative Skill Training on the Science Achievement and Learning Motivation of Elementary Students
Park, Soo-Kyong ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 121~129
The purpose of this study was to investigate the effects of the group reward and cooperative skill training on science achievement and learning motivation of elementary students. 3 classes of the 6th grade students were selected from an elementary school in Busan. Group I took traditional cooperative learning (TCL), group II took cooperative learning with competitive group reward (GR), and group III was trained in cooperative skill (CS) before cooperative learning. Students were taught about 'weather forecast' for thirteen periods and problem-based learning steps were applied in each class. The results from this study were as follows: First, there was an interactive effect between the treatment and achievement level in the science achievement test scores. In the case of high-level students the group reward was more effective than cooperative skill training on the science achievement; on the other hand, in the case of low-level students the cooperative skill training was more effective than the group reward on the science achievement. Second, there was no interactive effect between the treatment and achievement level in the motivation scores.
School Earth Science Curriculum Reflected in Exhibits and an Educational Analysis of Exhibition Methods: Cases of Natural History Museums in the U.S.
Kim, Chan-Jong ; Shin, Myeong-Kyeong ; Lee, Chang-Zin ; Cha, Hyun-Jeong ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 130~139
Natural history museums used to be called an "informal learning institute". It is based on the assumption that their exhibition and exhibits are supposed to reflect school science curriculum and support school science programs. This study is to explore how this assumption is verified in terms of content-wise connections between school science and museum exhibits. In this study, 461 Earth Science related exhibits were selected from the Smithonian Museums and the American Museum of Natural History in the U.S. and analyzed with several instruments. The instrument targeting on Earth Science curriculum was framed based on the Third International Mathematics and Science Study (1993) and the National Science Curriculum Standards (1996). Other than content-wise connections, this study investigated exhibition characteristics related to better learning of science: these characteristics were types of activities, exhibition media, exhibition technology, and presentation methods. The nature of science shown in exhibits were examined as well. Natural history museums were reconsidered for their relevance and potential as informal educational venues from this study.
Participation Metaphor for Learning and Its Implication for Science Teaching and Learning
Oh, Phil-Seok ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 140~148
This is a theoretical study of which the goal is to investigate the meaning of a participation metaphor (PM) for learning and draw its implication for teaching and learning science. The review of relevant literature reveals that the PM is associated with the view of learning as ongoing participation in sociocultural practices within a community, and that cognitive apprenticeship is an instructional model related closely to the PM. It is then suggested that a community of learners should be developed if science teaching and learning are to be implemented in line with the PM. Finally, the present study briefly introduces a high school science club as an exemplar of science learning community, including what should be considered in science education research.
On the Study of the Seasonality Precipitatio over South Korea
Yoon, Hee-Jung ; Kim, Hee-Jong ; Yoon, Ill-Hee ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 149~158
This study analyzes the seasonality precipitation using precipitation data from 1973 to 2001 over South Korea. The Seasonality Index and Annual variation of the Seasonality Precipitation were investigated from sixty-three observation stations. The Seasonality Precipitation means the degree of the precipitation falling intensively for some specific months. Spatially, precipitation that has a strong characteristic of regional shower is defined as seasonal precipitation. Precipitation forms are changed with various reasons and mainly the sporadic and local shower precipitation after rain spell in summer. Especially there appears a tendency that this kind of precipitation is sharply increasing in 1990's. Seasonality Index is used as a method to understand seasonal precipitation. If the yearly rainfall is concentrated for some specific months, Seasonality Index is growing gradually. It is confirmed that there is a tendency that all the from sixty-two observation stations Seasonality Index. While Seasonality Index over South of Korea concentrated from June to August because of the summer rain spell in the past (
), there appears to be a tendency that it concentrated from August and September since the mid 1990's. From the analysis of seasonal precipitation intensity distribution, most of southern Korea is under seasonality precipitation intensity 4. The seasonality precipitation intensity classification results are as follow: most of the observation stations were on a scale intensity of 3 and 4 in the past but currently reads seasonality precipitation intensities of 5 and 6.
Classification of the Core Climatic Region Established by the Entropy of Climate Elements - Focused on the Middle Part Region -
Park, Hyun-Wook ; Chung, Sung-Suk ; Park, Keon-Yeong ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 159~176
Geographic factors and mathmatical location of the Korean Peninsula have great influences on the variation patterns and appearances over a period of ten days of summer precipitation. In order to clarify the influence of several climate factors on precise climate classification in the middle part region of the Korea, weather entropy and the information ratio were calculated on the basis of information theory and of the data of 25 site observations. The data used for this study are the daily precipitation phenomenon over a period of ten days of summer during the recent thirteen years (1991-2003) at the 25 stations in the middle part region of the Korea. It is divided into four classes of no rain,
, 30.1mm over/day. Their temporal and spatial change were also analyzed. The results are as follows: the maximum and minimum value of calculated weather entropy are 1.870 bits at Chuncheon in the latter ten days of July and 0.960 bits at Ganghwa during mid September, respectively. And weather entropy in each observation sites tends to be larger in the beginning of August and smaller towards the end of September. The largest and smallest values of weather representative ness based on information ratio were observed at Chungju in the beginning of June and at Deagwallyeong towards the end of July. However, the largest values of weather representativeness came out during the middle or later part of September when 15 sites were adopted as the center of weather forecasting. The representative core region of weather forecasting and climate classification in the middle part region of the Korea are inside of the triangle region of the Buyeo, Incheon, and Gangneung.
Development of a Set of an Experimental Equipment of Westerly Wave for High School
Lee, Soon-Hwan ; Park, Gwang-Soon ; Kim, Hee-Soo ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 177~187
Due to a lack of reproducibility and visibility of the conventional equipment for westerly wave simulation, it is difficult to have indoor experiments at high school that show the stream of Hadley cell. A modified improvement of the old one improves the problem. The side wall and bottom of the new equipment is made by copper and acrylic resin, respectively, in order to clarify the difference between the water temperature inside and outside of the water tank. The equipment also has a high quality digital record for generating exact analysis of the results. And we also carried out several experiments that relate theoretical and experimental aspection of westerly wave. Temperature Detected Sheet (TDS) in flow visualization unit provides not only visual information of liquid flow, but also clear understanding of the relation between upper and lower wind flow structure. And the liquid stream simulated in indoor experiment using proposed equipment is commensurate with westerly wave in real atmosphere. The efficiency of educational properties of the proposed equipment is verified indirectly by Likert Scales survey of high school teachers.
Climatological Variability of Temperature and Precipitation in Jeju
Kim, Seong-Su ; Jang, Seung-Min ; Baek, Hee-Jeong ; Choi, Heung-Yeon ; Kwon, Won-Tae ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 188~197
The characteristics of variability of temperature and precipitation in Jeju were investigated using data observed in Jeju station for from 1924 to 2004. Annual mean temperature change for the last 81 years is
increase per year. After 1980, the increase is
per year, larger than the former. The increase of the minimum temperature is larger than that of the maximum temperature in Jeju and has resulted in the increase of mean temperature. The frequency of climate extreme occurrence of temperature and rainfall was also investigated. The temporal variation of frequency of the extremely higher temperature has increased in the 1980's with global warming. The appearance of the extremely lower minimum temperature has decreased during the summers and winters. The facts that the frequencies of rainy days has decreased and heavy rainfall days of more than 80 mm per day in precipitation has increased indicate the increase of rainfall intensity.
Geochemical Characteristics of the Outer-Shelf Muddy Sediments in the East China Sea
Youn, Jeung-Su ; Byun, Jong-Cheol ; Kim, Yeo-Sang ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 198~208
To investigate the provenance of outer-shelf mud patch in the East China Sea, the geochemical compositions were analyzed and compared with those of Chinese rivers sediments. The mud sedimentary facies are distributed in the central region and sandy mud facies are also widely distributed around the study area. The major elements (Fe, Mg, K, Ti, and Mn) show strong positive correlation with Al, and trace elements also indicate the same characteristics; hence, clay minerals are likely to be the promising host for those elements. The high concentration of Fe, Ti, and Mn elements are found in the western middle part near the Changjiang estuary, indicating that it seems to result from the influence of the Changjiang River. Elemental ratios including Sc/Al, Ti/Nb, Th/Sc, Cr/Th, Nb/Co, and Th/U were thus used as provenance indicators to identify the sediment origins of the East China Sea. The discrimination diagrams clearly show that most of the sediment in the northern part are originated from the Huanghe River, while the muddy sediments in the western part near the Changjiang estuary might come from the Changjiang River, suggesting that the outer-shelf muddy sediments of East China Sea are originated from diverse sources.
Odorous Pollutant Concentration Levels in the Ban-Wall Industrial Area and Its Surrounding Regions
Choi, Ye-Jin ; Kim, Ki-Hyun ; Jeon, Eui-Chan ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 209~220
In this study, the distribution patterns of major odorous compounds in ambient air were investigated in the areas surrounding the Ban-Wall industrial complex of Ansan, Korea (Aug. 2004 to Sep. 2005). The results indicated the environmental significance of several major odorous compounds which include carbonyl compounds, reduced sulfur compounds (RSC), and volatile organic compounds (VOC). When the results were compared on a diurnal basis, the afternoon time concentration of most odorous compounds were notably higher than their morning time counterparts. It also indicated that the odor concentrations differed greatly, in terms of spatial grouping scheme of data sets, such as between industrial area and non-industrial area. The comparison of spatial patterns indicated that the concentrations of most of the compounds at the industrial area were maintained at high concentration levels, compared to the surrounding areas. The overall results of this study thus suggest that the distribution of odorous compounds in a large industrial complex can exhibit a unique pattern of their own.
A Study on the Transport Mechanism of Tidal Beach Sediments I. Deukryang Bay, South Coast of Korea
Ryu, Sang-Ock ; Kim, Joo-Young ; Chang, Jin-Ho ; Cho, Yeong-Gil ; Shin, Sang-Eun ; Eun, Go-Yo-Na ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 221~235
In order to understand the transport mechanism of tidal beach sediments in Deukryang Bay, south coast of Korea, beach profiles, surface sediments, sedimentation rates and hydrodynamic conditions have been investigated. The beach is composed of a steep beach face and gentle low-tide terrace, showing general morphologic characteristics of tide dominated beach. Central beach face of an indented coast becomes flattened in summer, but ridge and runnel system developed in other seasons makes the beach profile rather irregular. These seasonal variations of beach profiles and sedimentation rate indicate that beach sedimentation is mainly controlled by both tide and wave processes. Erosion is prevalent in winter when strong wind wave is dominant, while deposition is dominant in other seasons. However, central beach showed an apparent erosional phase in summer. This is caused by strong waves induced by southerly strong winds occurring ephemerally during the summer. On the other hand, sedimentation rates are -89.2 mm/yr on the central beach and 60.5 mm/yr and 38.2 mm/yr on the sides. This result suggests that sediments are eroded on the central beach and subsequently transported to the both sides. Therefore, the central part of Sumun beach, used as a beach bathing site, will be continuously eroded, if nearby dyke continues to prevent the sediment supply from sources.
Review on the Stratigraphy and Geological Age of the Hominid Footprints-bearing Strata, Jeju Island, Korea
Kim, Kyung-Soo ; Kim, Jeong-Yul ;
Journal of the Korean earth science society, volume 27, issue 2, 2006, Pages 236~246
On the basis of field observation, geology of the footprints site consists of the Kwanghaeak Basalt, unnamed strata, Songaksan Tuff, Hamori Formation, and Sand Dune, in ascending order at the Hamori-Songaksan area and the Kwanghaeak Basalt, the hominid footprints-bearing strata, and Dune Sand are consisted in ascending order at the Sagaeri area. According to the designation that the Hamori Formation overlies the Songaksan Tuff, age dating results, and geologic sequence observed in the field, the strata containing hominid footprints are not correlated with the Hamori Formation but the unnamed strata, though the strata are shown as the Hamori Formation in the geologic map. It seems to be more reasonable that the geologic age of the footprints-bearing strata is thought to be around ca 15,000 yrs B.P. according to the results of