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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
Research Activities of the Nanjing Institute of Geology and Palaeontology, Chinese Academy Sciences
Lee, Chang-Zin ;
Journal of the Korean earth science society, volume 27, issue 1, 2006, Pages 1~5
Research fields are mainly invertebrate palaeontology, palaeobotany and palynology, micripalaeontology, and stratigraphy, which are being studied by the 223 researchers and graduate students (October, 2005). Since its foundation 50 years ago, the institute has published more than 6,200 research papers in national and international scientific journals, 300 volumes of scientific monographs in various fields. 200 scientific research projects have received awards from the state, Chinese Academy of Sciences, province and ministry level-government. Of them the "Project of the Chengjiang Biota and Cambrian Explosion" won the Frist class of National Natural Science Award from Ministry of Science and Technology in 2003.
Investigation of Mental Models about Tide for Scientifically Talented Middle School Students by Analyzing Facet of Conceptual Types by Context
Lee, Ki-Young ;
Journal of the Korean earth science society, volume 27, issue 1, 2006, Pages 6~14
The study investigates mental models of scientifically gifted, middle school students when it comes to tides. This was done by analyzing facet of conceptual types for two contexts. We carried out two performance tasks of tide with different context. A large number of students showed different conceptual types by context. As a result of analyzing facet of conceptual types by context, there was a slight difference in content-specific facet, but a remarkable one in strategic facet. We classified four mental models about tide by configuring facets of conceptual types: (1) Tide model (2) Force model (3) Phase model (4) Hybrid model. The Tide model is scientifically accepted model, but Force model and Phase model are incorrect models, and Hybrid model is mixed model. In cases of Force model and Phase model, conceptual types concur with each other, but these types of students comprehend tides as a result of joined forces of Moon & Sun and phase change of Moon, respectively. Arranging low mental models in proportional order, Tide model (45.0%), Hybrid model (30.0%), Force model (12.5%), and Phase model (7.5%).
Perception of High School Students in Chonnam Province on the Meteorology Terms in Geography Textbooks of North Korean Secondary School
Hong, Jeong-Min ; Jeong, Young-Kun ;
Journal of the Korean earth science society, volume 27, issue 1, 2006, Pages 15~19
In this study, the meteorology terms in the geography text books of North Korea which includes all of the meteorology educational contents in secondary school curriculum are compared with those in the earth science text books in South Korea. Forty science terms which are the same meaning but composed of different words are picked up to investigate the degree for 89 high school students in Chonnam province to perceive the meanings correctly. High school students' perceptions is on the average 30% higher in terminology of South Korea textbooks than in those of North Korea. But, students' perceptions on 9 North Korean terms is rather higher compared to South Korean terms. Twenty six (83.9%) terms which are difficult for high school students to perceive correct meanings are those lately composed of North Korean native words. Most of meteorology terms in South Korean textbooks are derived from the Chinese characters or imported from foreign language terms are easier for high school students to perceive correct meanings than those of North Korean terms derived from North Korean native language.
Levels and Patterns of Main Terms' Interrelationships in Student Teachers' Notable Questions about the Contents of the Elementary Science Textbooks
Lee, Myeong-Je ;
Journal of the Korean earth science society, volume 27, issue 1, 2006, Pages 20~31
This study analysed student teachers' notable questions about the earth science contents in the elementary science textbooks. The contents of notable questions were defined as ‘notable question contents 1' and 'notable question contents 2'. Both the question contorts are contents about which the number of questions is above three times and from two times to three times as much as the mean number of questions per page of each unit respectively. The results are as follows. First, question contents 1 are found as 'clouds observation', 'geological strata formation' and so on. Question contents 2, 'rainfall measurement', 'moon's movement during one night' and so on are found. Second, the number of interrelationships of main terms in questions increased in each question of question contents 1, but 4 term-patterns are found more in question contents 2 than question contents 1. Third, high interrelationship patterns of terms in question contents 1 are 'coal and petroleum-generation', 'metamorphosis-heat and pressure', 'metamorphosis-heat and pressure-metamorphic rocks', 'planet-sun-comet-revolution' and in question contents 2. 'constellation plate-use', 'dryness and wetness hygrometer-principle', 'seismograph-principle-earthquake', 'earth rotation axis-tilting-occurrence', 'dryness and wetness hygrometer-principle-humidity' and so on. The sources of questions analysed in this study are estimated as the content construction system of textbooks, or students' general questions about the earth science contents. If this is the former, the problems in texts and illustrations in textbooks should be articulated and resolved. And if the latter, the elementary science curriculum has to be reconsidered in view of scientific literacy in earth science.
High School Science Teachers' Understanding of the Contents Related to the Geologic Time in the Secondary School Science Textbooks and the Guidebooks for Teachers
Kim, Kyung-Soo ; Kim, Jeong-Yul ;
Journal of the Korean earth science society, volume 27, issue 1, 2006, Pages 32~48
The purposes of this study can divided into three parts: First, to investigate high school science teachers' understanding concerning geologic time; second, to analyze contents related to geologic time in the secondary school science textbooks and teachers' guidebooks; and third, to compare the response type of science teachers using the results of the contents. Forty high school science teachers in the Chungbuk province are chosen to answer to the questionnaire. Many teachers (50%) think that the age of Earth is simply measured by radioisotope. However, most of them do not know the measuring method in detail. The over 50% of the teachers think that the uniformitarianism, law of superposition, law of faunal succession law of unconformity, and law of intrusion are the great five laws of historical geology. Many part of the contents related to geologic time in the textbooks and guidebooks are incorrect and described distinctly from each other. Such content includes the age of Earth, age of the oldest rock in Earth, definition and range of geologic time, measuring method of the Earth's age, and law of historical geology. Many of the science teachers do not have a complete understanding of the contents related to geologic time. This study suggests that the reason lies heavily on the contents described in the textbooks and guidebooks. Therefore, it is necessary to review and revise the contents related to geologic time in the textbooks and guidebooks.
Geochemical Characteristics of Stream Sediments Based on Bed Rocks in the Naju Area, Korea
Park, Young-Seog ; Kim, Jong-Kyun ; Jung, Young-Hwa ;
Journal of the Korean earth science society, volume 27, issue 1, 2006, Pages 49~60
The purpose of this study is to investigate geochemical characteristics for stream sediments in the Naju area. We collected 139 stream sediments samples from primary channels. Samples were dried slowly in the laboratory and chemical analysis was carried out using XRF. ICP-AES and NAA. In order to investigate geochemical characteristics, the geological groups categorized into granitic gneiss area, schist area, granite area, arenaceous rock area, tuff area, andesite area, and rhyolite area. Average contents of major elements for geological groups are
. According to the comparison of average contents of major elements,
are higher in granitic gneiss area,
are higher in tuff area, MgO and
are higher in andesite area,
is higher in rhyolite area,
, and MnO are higher in arenaceous rock area. Average contents of minor and rare earth elements for geological groups are
. According to the comparison of average contents of minor and rare earth elements for geological groups, Pb, Li, Cs, Hf, Rb, Sb, Pa, Ce, Eu, and Yb are higher in granitic gneiss area; Ba, Co, and Cr in schist area; Nb, Ni, and Zr in arenaceous rock area; Sr in tuff area: and Be, Cu, V, Sc, and Zn are such in andesite area.
Numerical Studies on the Variation of Flow Structure Due to Sea Surface Temperature at the Lee Side of Jeju Island in the Korean Peninsula
Lee, Soon-Hwan ; Park, Gwang-Soon ;
Journal of the Korean earth science society, volume 27, issue 1, 2006, Pages 61~72
Numerical studies on the influence of interaction between atmosphere and ocean on the variation of Karman vortex at the lee side of Jeju Island were carried out. Karman vortex tends to be occurred at limited height associated with Hanla mountain. And we can find clear Karman vortex at 900 hPa height in this study. One big vortex cell occurred at lee side of Jeju Island in the begging stage of its development and the cell was divided into three small cells as time goes by. And the strength and lifetime of small vortexes depend on the distribution of SST (Sea Surface Temperature). Weak gradient of SST makes long-lasting Karman vortex but produces weak potential vorticity at lee side of Jeju-do in comparison with the vortex under strong SST gradient. Strong SST gradient also increases not only the mixing depth but also the mixing ratio at lower level of troposphere. And the increased atmospheric mixing decreases the mechanical forcing due to isolated topography. Then the strength of Karman vortex at the lee side of Jeju Island becomes weak under strong gradient of SST. Thus the evolution of Karman vortex is closely related to distribution of SST around the isolated island.
Contamination Characteristics of Heavy Metals in Indoor, Outdoor and Playground of Schools in the Gochang-Gun, Chonbuk Province of South Korea
Kim, Yong-Hwan ; Chung, Duk-Ho ; Cho, Kyu-Seong ;
Journal of the Korean earth science society, volume 27, issue 1, 2006, Pages 73~82
Dust samples were collected from 10 middle and high schools in the Gochang-Gun, Korea. Heavy metal concentrations were determined for the dry-deposited dusts from indoor and outdoor of classroom and playground of each sampling site. Concentrations of Cd, Cu, Pb and Zn in indoor's dusts were highly concentrated. Also concentrations of Cu, Ni, Pb and Zn in outdoor's dusts were highly concentrated. Concentrations of Cd, Cu and Zn in the dusts were much higher than the world average contents in soil and environmental orientation value. These levels are similar to those of the dust samples at middle schools and high schools located in Jeonju-city, Korea. Compared with concentrations of heavy metals in soils and dusts in Korea, the environment of indoor and outdoor of classroom is highly concentrated except for Cu, Zn. The concentrations of playground is less than that of residential dust and main road dust and playground in Jeonju-city. Playground dusts in 1 school exhibited the enhanced heavy metal pollution with a pollution index (Kloke, 1979) greater than 1.0, but indoor and outdoor dusts in 7 schools exhibited the enhanced heavy metal pollution with a pollution index (by Kloke) yester than 1.0.
Analysis on the Sedimentary Environment Change Induced by Typhoon in the Sacheoncheon, Gangneung using Multi-temporal Remote Sensing Data
Park, No-Wook ; Jang, Dong-Ho ; Chi, Kwang-Hoon ;
Journal of the Korean earth science society, volume 27, issue 1, 2006, Pages 83~94
The objective of this paper is to extract and analyze the sediment environment change information in the Sachencheon, Gangneung, Korea that was seriously damaged as a result of typhoon Rusa aftermath early in September, 2002 using multi-temporal remote sensing data. For the extraction of change information, an unsupervised approach based on the automatic determination of thresholding values was applied. As the change detection results, turbidity changes right after typhoon Rusa, the decrease of wetlands, the increase of dry sand and channel width and changes of relative level in the stream due to seasonal variation were observed. Sedimentation in the cultivated areas and restoration works also affected the change near the Sacheoncheon. In addition to the change detection analysis, several environmental thematic maps including microtopographic map, distributions of estimated amount of flood deposits and flood hazard landform classification map were generated by using remote sensing and field survey data. In conclusion, multi-temporal remote sensing data can be effectively used for natural hazard analysis and damage information extraction and specific data processing techniques for high-resolution remote sensing data should also be developed.
Minor Siliceous Microfossil Group and Fossil Cysts from the Yeonil Group (Tertiary) in the Northern Area of the Pohang Basin, Kyeongbuk Province, Korea
Koh, Yeong-Koo ;
Journal of the Korean earth science society, volume 27, issue 1, 2006, Pages 95~117
From the Tertiary Yeonil Group distributed in Songra and Cheongha areas, the northern part of the Pohang Basin, nine archaeomonad species belonging to two genera, and other three types of chryophycean cysts considered as stomatocysts, five endoskeletal dinoflagellate species belonging to three genera and eighteen ebridian species belonging to eleven genera were identified. Based on above siliceous microfossil assemblages, the Yeonil Group is corresponded to Middle Miocene age. The group is correlated with the Calvert Formation (Maryland in USA) and the Hojuji Formation (in Central Japan) by its archaeomonad cysts. And, the group is correlated with the intervals of Actiniscus elongatus to Middle Hermesinella conata zones in Southwest Pacific region and of Spongebria miocenica to Middle Hermesineila schulzii zones in
Plateau, Norwegian Sea, based on the ebridian assemblages of the group. From the chrysophycean cyst including archaeomonad, endoskeletal dinoflagellate and ebridian assemblages in the Yeonil Group of the study area, it is inferred that cold water masses dominated during the deposition oi the group with occasional warm water. The upper part of the group might be somewhat colder than the lower one of the group in depositional condition. In addition, minute chrysopycean cysts considered as stomatocysts suggest the influence of fresh or brackish water during the deposition of the group.