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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean earth science society
Journal Basic Information
Journal DOI :
The Korean Earth Science Society
Editor in Chief :
Volume & Issues
Volume 31, Issue 7 - Dec 2010
Volume 31, Issue 6 - Oct 2010
Volume 31, Issue 5 - Sep 2010
Volume 31, Issue 4 - Aug 2010
Volume 31, Issue 3 - Jun 2010
Volume 31, Issue 2 - Apr 2010
Volume 31, Issue 1 - Feb 2010
Selecting the target year
Precise Gravity Terrain Correction of Gravity Exploration for Small Anomalous Bodies
Lee, Heui-Soon ; Rim, Hyoung-Rea ;
Journal of the Korean earth science society, volume 31, issue 1, 2010, Pages 1~7
DOI : 10.5467/JKESS.2010.31.1.001
Many studies have successfully developed a number of terrain correction programs in gravity data. Furthermore, terrain data that is a basic data for terrain correction has widely been provided through internet. We have also developed our own precise gravity terrain correction program. The currently existing gravity terrain correction programs have been developed for regional scale gravity survey, thus a more precise gravity terrain correction program needs to be developed to correct terrain effect. This precise gravity terrain program can be applied on small size geologic targets, such as small scale underground resources or underground cavities. The multiquadric equation has been applied to create a mathematical terrain surface from basic terrain data. Users of this terrain correction program can put additional terrain data to make more precise terrain correction. In addition, height differences between terrain and base of gravity meter can be corrected in this program.
Geology and Stromatolite Fossil Localities of Socheong Island, Korea: An Introductory Review
Kim, Jeong-Yul ; Han, Sung-Hee ;
Journal of the Korean earth science society, volume 31, issue 1, 2010, Pages 8~17
DOI : 10.5467/JKESS.2010.31.1.008
Geology and stromatolite fossil localities of Socheong Island are reviewed on the basis of previous studies and recent field survey. A new fossil locality of stromatolites which are very well preserved is recognized in Bunam area, northeast of Socheong Island. An outcrop composed of sandstone and shale alternations which exhibit well-developed laminations and folds is also found in the east of the Socheong harbor, and it is regarded as one of the symbolic features of the geology in Socheong Island. Stromatolite fossil localities of Socheong Island contains diverse and well-preserved Late Proterozoic stromatolites which are correlated with those from the Mukchon and Myoraksan series of the Sangwon System and diverse sedimentary structures such as ripple marks, desiccation cracks, and raindrop imprints. Stromatolites of Socheong Island, the oldest fossil Natural Monument of Korea, should be preserved at the national level, and continued intensive research must be conducted.
Facies Analysis of the Early Mesozoic Hajo Formation in the Chungnam Basin, Boryeong, Korea
Lee, Sin-Woo ; Chung, Gong-Soo ;
Journal of the Korean earth science society, volume 31, issue 1, 2010, Pages 18~35
DOI : 10.5467/JKESS.2010.31.1.018
Facies analysis of the Late Triassic Hajo Formation, the lowest stratigraphic unit in the Chungnam Basin, shows that the lower part is composed mainly of breccias or conglomerates; the middle part, conglomerates; and the upper part, conglomerates and sandstones. The formation consists of 13 facies, which include horizontally stratified clastsupported conglomerate, clast-supported massive breccia, matrix-supported massive breccia or conglomerate, matrixsupported graded conglomerate, massive pebbly sandstone, horizontally laminated sandstone, massive sandstone, graded sandstone, inversely graded sandstone, planar cross-bedded sandstone, trough cross-bedded sandstone, low angle crossbedded sandstone, and massive mudstone. These are grouped into 4 facies associations (FA). FA I consisted of clastsupported and matrix-supported massive breccias presumably deposited in the talus or upper fan delta environment. FA II consists of matrix-supported massive conglomerate and horizontally stratified clast-supported conglomerate of cobble size and it seems to have been deposited in the upper fan delta environment. FAIII consisted of matrix-supported massive conglomerate of pebble size, horizontally laminated sandstone and massive sandstone may have been deposited in the middle fan delta environment. FAIV consists of massive pebbly sandstone, horizontally laminated sandstone and massive sandstone and presumably was deposited in the lower fan delta environment. In general the Hajo Formation is interpreted to have been deposited at the talus/upper fan delta environment in early stage; it might have been deposited in the alternating environments of upper and middle fan delta in middle stage; and it seems to have been deposited in alternating environments of middle and lower fan delta in late stage.
A Comparative Analysis of the Linguistic Features of Texts used in the unit of Volcano and Earthquake in Korean Elementary and Secondary School Science Textbooks
Shin, Myung-Hwan ; Maeng, Seung-Ho ; Kim, Chan-Jong ;
Journal of the Korean earth science society, volume 31, issue 1, 2010, Pages 36~50
DOI : 10.5467/JKESS.2010.31.1.036
The purpose of this study is to investigate the aspect of variation of the texts in elementary and secondary school science textbooks at each grade level in terms of linguistic features. Data included some of the written texts related to 'Volcano and Earthquake' in Korean elementary and secondary school science textbooks in the seventh National Curriculum. The written texts were comparatively analyzed in terms of textual meaning, interpersonal meaning, and ideational meaning. Results revealed that there were different structures and linguistic features of the texts in school science textbooks depending on the grade level. Therefore, we argue that the differences in this study may make students feel difficult and strange when they read and understand science textbooks. We suggest that science teachers need to play the role of a mediator between students' understanding and the structural features of the scientific language in science learning.
Science Popularizing Mechanism of a Science Magazine in terms of the Linguistic Features of Earth Science Articles in 'Science Donga'
Ham, Seok-Jin ; Maeng, Seung-Ho ; Kim, Chan-Jong ;
Journal of the Korean earth science society, volume 31, issue 1, 2010, Pages 51~62
DOI : 10.5467/JKESS.2010.31.1.051
The Present Situation and Science High School Teachers' Perception about Field Application of the GLOBE Program in Korea
Lee, Moon-Won ; Kim, Hwa-Sung ; Ludman, Allan ;
Journal of the Korean earth science society, volume 31, issue 1, 2010, Pages 63~70
DOI : 10.5467/JKESS.2010.31.1.063
The purpose of this study was to investigate the application of GLOBE program in Korea and its perception displayed by the Science High school Teachers. The interview using a questionnaire with 12 science high school teachers in Korea was conducted. It was attempted to find a problem occurring during the practical application for getting a basic data for the development of Korean GLOBE program. The results of this study are as follows: (1) The level of GLOBE program was for upper grade levelsin elementary school and middle school. The program may not be suitable for the Science High School students in Korea. (2) To successfully apply the GLOBE program in Korea, study levels and research subjects in the program must be further developed in terms of quality and areas. Suggestions for the possibility of adopting and operating the program in Korea are made as follows: (1) To effectively manage the GLOBE school sites, there has to be a headquarter system in place and operation under, say, the Korean Earth Science Society. (2) To ensure the program's identity and goals, it is to set up a center for the Korea GLOBE program with a financial support system established.
An Analysis of Earth System Understandings (ESU) of 8th-grade Students' Imagery about 'the Earth' Represented by Words and Drawings
Oh, Hyun-Seok ; Kim, Chan-Jong ;
Journal of the Korean earth science society, volume 31, issue 1, 2010, Pages 71~87
DOI : 10.5467/JKESS.2010.31.1.071
The purpose of this study was to explore 8th-grade students' imageries of the Earth. We analyzed the middle school students' imageries about the Earth represented with words and drawings in Earth Systems Understanding (ESU, hereafter) framework. The students' imageries about 'the Earth' are vary by their experiences and prior-knowledge, which significantly impacts their imagery construction. Especially, the students' ESU were characterized into two aspects: One is a macroscopic view point based on full-objects of the Earth by indirect experiences and the other is everyday view point based on scene of the Earth surface and environment by direct experiences. Results revealed students' imageries about the Earth were impacted by visual experiences and those students' ESU were more represented by drawing as visual imagery than by words, formal language. The negative imageries were mainly represented through interactions of the Earth subsystems.
Development of Apparatus and Methods for Understanding the Dynamics of the Western Boundary Current
Jang, Swung-Hwan ; Shin, Jung-Sun ; Moon, Byung-Kwon ;
Journal of the Korean earth science society, volume 31, issue 1, 2010, Pages 88~94
DOI : 10.5467/JKESS.2010.31.1.088
A simple laboratory device and methodology are developed for deep understanding of the western boundary current (WBC). The apparatus consists of a rotating (count-clockwise) rectangular tank with a sloping bottom in order to simulate the beta effect, the variation of the Coriolis parameter with latitude. We also used a clockwise rotating disk at the surface water to mimic the wind stress forcing in mid-latitude oceans. Four experiments were carried out using some combination of a bottom type and a rotation of the tank. Experiment with the beta effect clearly demonstrated the WBClike flow as well as the Sverdrup interior. However, the water in a tank gave rise to an inertial motion under the influence of a constant Coriolis force alone. We also discussed a stiffening of the rotating fluid on the basis of the Taylor-Proudman effect. We believe that the apparatus and methods developed in this study help to understand the WBC due to the beta effect.
An Analysis of the Reliability of Group Assessment of Logical Thinking (GALT) using Generalizability Theory
Ryu, Chun-Ryol ; Lee, Yong-Geun ;
Journal of the Korean earth science society, volume 31, issue 1, 2010, Pages 95~105
DOI : 10.5467/JKESS.2010.31.1.095
The purpose of this study lies in applying generalizability theory depending on the aim of the usage of GALT to analyze the sources of error of single-facet considering item and person only and to analyze the sources of error of multi-facet considering item, person and domain. The study was conducted with 1016 students of local elementary, middle, and high schools. The 21 items of a full version were answered for 40 minute and then the 12 items of short version were sampled to analyze reliability using generalizability theory. Both the full version and the short version of the items were analyzed using Cronbach's alpha for data analysis, and we applied generalizability theory and separate
design, G study and D study were performed. Results of analysis are as follows: First, the result of D study after
design both on the full version and the short version showed that in the case of the full version, the generalizability coefficient was 0.87 exceeding a normal level of 0.80, and the normal level of generalizability coefficient was achieved in 13 items as well. In case of short version, when 12 items were evaluated, generalizability coefficient was 0.77 not reaching the normal level, and the normal level was achieved in case of more than 15 items. Second, the result of D study after
design on the short version showed that once one domain consists of 2 items in 6 domains, generalizability coefficient was 0.71 which is lower than the normal level of 0.80, the normal level was achieved in more than 5 item cases.
Exploring Scientific Argumentation from Teacher-Student Interaction with Epistemological and Psychological Perspectives
Park, Young-Shin ;
Journal of the Korean earth science society, volume 31, issue 1, 2010, Pages 106~117
DOI : 10.5467/JKESS.2010.31.1.106
The purpose of this study was to explore students' argumentation in perspectives of epistemology and psychology and to find out how teacher can promote students' abilities of developing argumentation. The 60 hours of lessons from the interaction between one science teacher (Mr. Physics, who had 35 years of teaching experience) and his 26 students were observed, transcribed, and analyzed using two different analyzing tools; one is from the perspective of epistemology and the other from the perspective of psychology, which can portray how argumentation is constructed. Mr. Physics created the environment where students could promote the quality of scientific argumentation through explicit teaching strategy, Claim-Evidence Approach. The low level of argumentation was portrayed through examples from students' prior knowledge or experience in the form of an Appeal to the instance operation and the Elaboration reasoning skill. Students' own claims were developed through application of knowledge in a different context in the form of an Induction operation and Generativity reasoning skill. Higher level of argumentation was portrayed through Consistency operation with other knowledge or experience and Explanation reasoning skills based on students' ideas with more active teacher's inputs. The teacher in this study played a role as a helper for students to enact identities as competent "sense makers," as an elaborator rather than evaluator to extend students' ideas, and as a mentor to foster and monitor the students' development of ideas of a higher quality. It is critical for teachers to understand the nature of argumentation, which in turn is connected to their explicit teaching strategy with the aim of providing opportunities where students can understand the science enterprise.