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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 23, Issue 8 - Dec 2002
Volume 23, Issue 7 - Oct 2002
Volume 23, Issue 6 - Aug 2002
Volume 23, Issue 5 - Jun 2002
Volume 23, Issue 4 - Apr 2002
Volume 23, Issue 3 - Feb 2002
Volume 23, Issue 2 - Jan 2002
Volume 23, Issue 1 - Jan 2002
Selecting the target year
High School Students' Interest on Minerals and Rocks
Choi, Jun-Kyong ; Wee, Soo-Meen ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 625~631
The purpose of this study was to investigate high school students' interest on minerals and rocks. Seven hundred and eighty three students from four different regions (i.e., Seoul, Kyunggi, Chungbuk and Jeju) participated in this study. The results can be summarized as follows: (1) The students have somewhat low interest about minerals and rocks. In addition, the students lose the interest because they have been forced to learn minerals and rocks theoretically. (2) Girls' interest on minerals and rocks was higher than that of boys.
Developing a Scoring Rubric for Students' Mind Maps and Its Reliability
Lee, Su-Jung ; Su-Jung, Chan-Jong ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 632~639
The purpose of the study is to develop a scoring rubric for students’ mind maps. The participants of this research were students in two fourth-grade classes selected from an elementary school in Pyungtaek-shi. After receiving basic training, students developed mind maps four times while teaming two science units. In order to score the mind maps, a scoring rubric was developed. To estimate the reliability of the rubric, selected mind maps were marked by three teachers and correlational coefficients were calculated with SPSS. As a result of the study, a scoring rubric consisted of three domains, central circle, branches, and expression were developed. The reliability of the rubric is proven to be high to very high.
The Effects of Cooperative Learning through STAD Model on High School Student' Learning Achievements and Scientific Attitudes in the Field of Astronomy
Park, Hong-Seo ; Cho, Yong-Goo ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 640~648
The purposes of this study is to examine the effects of cooperative teaming through student team-achievement division (STAD) model on high school students’ leaming achievements and scientific attitudes in the field of astronomy. It is another aim to compare effects of cooperative learning based on improvement scores with traditional teaching method done only by teachers in astronomy field. This study was conducted on two tenth grade classes in a boy’s high school in Incheon. Students had four classes a week in cooperative learning way for four weeks. During cooperative learning classes, formative evaluation was given to students every week oil Stars and Exploring the Solar System. The results show that these two approaches have great different effects on students’ astronomical knowledge and that students adopt more positive scientific attitude toward cooperative learning classes than traditional ones. In conclusion, the cooperative learning is more effective and positive than traditional one in learning astronomical knowledge and in students scientific attitude for science classes.
Development of Geological Field Courses and the Effect of Field Study on the Affective Domain in Science and on Achievement of Students
Byeon, Heung-Yong ; Kim, Cheong-Bin ; Cho, Kyu-Seong ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 649~658
The purpose of this study is to develop geological field sites for open ended education and inquiry learning, and to find the influence of field study on the affective domain in science and the achievement. As for the field sites, we used the areas ranging from Chaeseokgang- of Kyeokpo, in Buan, to around Bangsanje from Naejang-dong in Jeongeup to Ssangchi-myun in Sunchang-kun, Jeolla North Province. The affective domain in science is composed of three parts-cognition of science, interests toward science, and the scientific attitudes. to evaluate the stage of the achievement, we used questionnaire composed by 25 items. While the control group does not show any change in three parts of the affective domain, the experimental group shows positive changes, from 2.44 to 2.37 (cognition of science), from 3.15 to 3.08 (interests toward science), and from 2.91 to 2.74 (scientific attitudes) on Likert Scale. Also the score arranged by the analysis of covariate shows that the experimental group is more positive than the control group by 0.12 point in cognition of science, by 0.15 point in interests toward science, and by 0.23 point in scientific attitudes. In terms of the stage of achievement, the score of the experimental group, which is arranged by analysis of covariate, is 7.68 higher than that of the control group, on maximum of 100.
The Effects of Portfolio Teaching on the Organization and the Quantity of Elementary Student' Science Concepts
Lee, Su-Jung ; Kim, Chan-Jong ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 659~665
The purpose of the study is to investigate the effects of portfolio on the organization and the quantity of the students’ science concepts. Two fourth grade classes were selected from an elementary school in Pyungtaek-shi, Kyunggi-do, and one class is assigned to experimental group, the other control group. Experimental group received portfolio teaching, and control group received conventional instruction. The effects of portfolio teaching were investigated with students’ mind maps. Students participated had training to develop mind maps, and developed mind maps four times during learning two units, strata and fossils, and change by heat. Mind maps developed by students were scored and analyzed with SPSS. The class with portfolio instruction showed higher scores than control group. In conclusion, the portfolio teaching enhances the organization and the quantity of students’ science concepts.
The Development of Level-Differentiated WBI Program on Weather and Climate Unit and the Analysis of Its Effects in Earth Science Class
Kim, Kwang-Hui ; Park, Soo-Kyong ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 666~675
The purpose of this study was to develop the level-defferentiated Web Based Instruction(WBI) program, to examine its effects on the science achievement self-directed learning characteristics, and the students’ perceptions on the WBI learning. For this purpose, the advanced and complementary WBI program of level-differentiated curriculum was developed to adapt to class fields and examine instruction facilitating efficiency. Designed and developed the WBI program make it possible to teach students according to the level-differentiated learning for the chapter, ‘weather and climate’ in high school science curriculum. The results of this study are as follows: First, level-differentiated WBI was effective to encourage self-concept, learning eagerness, future-oriented self-apprehension, creativity, self-assessment of the student’s self-directed teaming characteristics. There was no interaction effect of treatment and students’ learning ability at the self-directed learning characteristics. Second, the scores of science achievement of WBI group were significantly higher than those of conventional lecture group. There was interaction effect of treatment and students’ learning ability. However level-differentiated WBI has no effect on openness, initiative, responsibility of the student’s self-directed learning characteristics. There was interaction effect of treatment and students’ learning ability at the science achievement, Third, in the perception questionnaire of WBI teaming, many students showed the WBI teaming was good in terms of causing interaction between learners and web based learning materials including various images and animations. However there are several students who showed learning difficulties. For example they wonder which part is more important and what order is proper to study in hypertext environment.
A Comparative Study on the Windchill Indices
Park, Jeon-Hwan ; Han, Uk ; Park, Rae-Seol ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 676~682
The concept of sensible temperature in winter is an attempt to quantify the sensation of cold by dry-bulb temperature combined with wind speed. Siple-Passel’s windchill equivalent temperature originated in experiments that are not conformable to various human conditions. Therefore, many investigators have found the flaws which are listed. Steadman’s model is based on the concept of thermal equilibrium and more sound and more representative of human conditions. But no classifications exist for Steadman’s windchill equivalent temperature, yet. The JAG/TI-model which was developed by US and Canada is more accurate, easy to understand and reflects human beings by conducting experiments using human volunteers but didn't take into account solar radiation, wet condition and physical state of the individual. Because of individual differences in people’s age, activity, health, metabolic rate, etc., no experimental evidence exists to suggest whether Siple-Passel’s, Steadman’s and JAG/TI-model’s windchill equivalent temperature is more applicable to the majority of people. Therefore we need the windchill model which is best applicable to Korean Army.
The Exceedance Patterns of O
Air Quality Standards from 31 Monitoring Stations in Seoul
Kim, Min-Young ; Choi, Ye-Jin ; Kim, Ki-Hyun ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 683~696
In this work. we investigated the ozone data sets that exceeded ambient air quality standards from 31 air quality monitoring stations dispersed across the Seoul metropolitan city during the period covering 1990 and 2000. To specifically describe spatial dependency of high level O
occurrence, we grouped our data into four different geographical ozone exceedance is much longer in SW than the other three sectors. When we compared the exceedance data in terms of occurrence frequency, the month of maximum frequency differed slightly among different sectors. Examination of long-term exceedance trend indicated that its frequency increased continuously from all sectors over the past years, although slightly opposite patterns existed in their absolute values. Most importantly, its peak occurrence frequency seemed to center in very recent years such as 1998 (NE sector) and 2000 (ail pattern sectors except NE). Consequently, we were able to describe the existence of certain patterns of ozone exceedance data sets in terms of both temporal and spatial scales.
Elemental Composition of Authigenic Siderites in the Early Holocene Coastal Sediments, Western Coast of Korea and Their Depositional Implication
Cho, J.W. ; Lim, D.I. ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 697~706
Authigenic siderite grains, ranging 100 to 250-
m in diameter, are abundant in an about 8,600-year-old sediment layer in Namyang Bay, west coast of Korea. The siderites exhibit the aggregated spherulitic morphology with well-developed rhombs on the grain surfaces. They consist mostly of FeCO
(average, 65%) and MnCO
(average, 22%) with low Mg/Ca ratio (less than 0.4) in their bulk composition. A series of compositional ternary discrimination diagrams, together with high Mn and low Mg contents, show that only meteoric porewater was involved in siderite precipitation, assuming that depositional environment of host sediment is an organic-rich freshwater system. Considering a series of results such as radiocarbon age, authigenic Mn-rich siderite and lithological features, siderite-hosting sediment (unit Tl) is interpreted as freshwater swamp or bog deposition, infilling the topographic depressions that locally existed before the formation of mid-to-late Holocene tidal deposits. Center-to-margin compositional variation within individual grain is very systematic; Mn and Ca decrease towards the margin of a siderite grain, while Fe and Mg increase. It suggests that the spherulitic siderites were precipitated in this sedimentary layer in a series during the early diagenesis of MnOx-FeOx reduction under steady-state.
Sea-bottom Sediments and Seafloor Acoustic Image by Side Scan Sonar on Sindu-ri Offshore
Woo, Han-Jun ; Lee, Yong-Kuk ; Jeong, Kap-Sik ; Je, Jong-Geel ; Park, Gun-Tae ; Jung, Baek-Hun ; Cho, Jin-Hyung ; Kim, Seong-Ryul ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 707~721
Seafloor acoustic image data using the side scan sonar system were gathered on the Sindu-ri offshore near the Taean peninsula, middle western Korea. The relationship between the back-scattering acoustic intensity and the sea-bottom sediment properties was studied. And these two data sets were compared and interpreted with the water depth, respectively. Most of sediment properties were correlated well to the acoustic intensity, however the distribution patterns of the sea-bottom sediment and the seafloor acoustic image were not similar to each other except the rocky bottom area. The water depth was not only influential on the distribution pattern of seafloor acoustic image but also showed a linear relation with the sediment properties distribution.
Sedimentary Facies and Geochemical Characteristics of Upper Intertidal Zone, Southwestern Coast, Korea
Kang, Suk-Bum ; Koh, Young-Koo ; Park, Bae-Young ; Youn, Seok-Tai ; Kim, Joo-Yong ; Oh, Kang-Ho ; Shin, Sang-Eun ;
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 722~735
In order to reveal sedimentary facies and geochemical characteristics on sediments distributed in upper intertidal zone, the southwestern coast of Korea, grain size and metal content analyses to the sediments were carried out. The grain size distribution of sediments shows very wide range from gravel to mud. The sediments are very well sorted to very poorly sorted and mostly positively skewed. Geochemical behavior of metals in the sediments is dependant on grain size, in part, but might be much controlled by complex submarine topography, highly varied tidal currents and surrounding land geology in the study area. Igeo (index of geoaccumulation) representing metal condensation in the sediments moderately/strongly polluted in Co and Cr and moderately polluted in Cu and Ni. But notable metal condensations are not found in the study area. So, it might be interpreted that grain size and metal content distribution tendencies in the sediments are considerably influenced by complex submarine topography, highly varied tidal currents and surrounding land geology.
EARTH SCIENCE INSTITUTE : KOREA ASTRONOMY OBSERVATORY
Journal of the Korean earth science society, volume 23, issue 8, 2002, Pages 736~736