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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 32, Issue 7 - Dec 2011
Volume 32, Issue 6 - Oct 2011
Volume 32, Issue 5 - Sep 2011
Volume 32, Issue 4 - Aug 2011
Volume 32, Issue 3 - Jun 2011
Volume 32, Issue 2 - Apr 2011
Volume 32, Issue 1 - Feb 2011
Selecting the target year
Time-series Mapping and Uncertainty Modeling of Environmental Variables: A Case Study of PM
Park, No-Wook ;
Journal of the Korean earth science society, volume 32, issue 3, 2011, Pages 249~264
DOI : 10.5467/JKESS.2011.32.3.249
A multi-Gaussian kriging approach extended to space-time domain is presented for uncertainty modeling as well as time-series mapping of environmental variables. Within a multi-Gaussian framework, normal score transformed environmental variables are first decomposed into deterministic trend and stochastic residual components. After local temporal trend models are constructed, the parameters of the models are estimated and interpolated in space. Space-time correlation structures of stationary residual components are quantified using a product-sum space-time variogram model. The ccdf is modeled at all grid locations using this space-time variogram model and space-time kriging. Finally, e-type estimates and conditional variances are computed from the ccdf models for spatial mapping and uncertainty analysis, respectively. The proposed approach is illustrated through a case of time-series Particulate Matter 10 (
) concentration mapping in Incheon Metropolitan city using monthly
concentrations at 13 stations for 3 years. It is shown that the proposed approach would generate reliable time-series
concentration maps with less mean bias and better prediction capability, compared to conventional spatial-only ordinary kriging. It is also demonstrated that the conditional variances and the probability exceeding a certain thresholding value would be useful information sources for interpretation.
Seasonal Variations of Hamo and Hyeopjae Beach Sediments in the Western Part of Jeju Island
Youn, Jeung-Su ; Kim, Tae-Joung ;
Journal of the Korean earth science society, volume 32, issue 3, 2011, Pages 265~275
DOI : 10.5467/JKESS.2011.32.3.265
The Hamo and Hyeopjae beaches in the western part of Jeju Island were studied in terms of seasonal variations of surface sediment and beach profile. Seasonal drift direction of the beach sands also was investigated. The Hamo beach of
steep is composed of medium sand containing volcanic clasts and shell fragments. The Hyeopjae beach of
steep is composed of coarse shelly sand. Hamo beach deformation is probably caused by the jetties constructed in the western part of the beach. In the Hyeopjae beach, surface sands were drifted into the dune side by the northwestern stormy wind during winter season.
An Estimation of Concentration of Asian Dust (PM
) Using WRF-SMOKE-CMAQ (MADRID) During Springtime in the Korean Peninsula
Moon, Yun-Seob ; Lim, Yun-Kyu ; Lee, Kang-Yeol ;
Journal of the Korean earth science society, volume 32, issue 3, 2011, Pages 276~293
DOI : 10.5467/JKESS.2011.32.3.276
In this study a modeling system consisting of Weather Research and Forecasting (WRF), Sparse Matrix Operator Kernel Emissions (SMOKE), the Community Multiscale Air Quality (CMAQ) model, and the CMAQ-Model of Aerosol Dynamics, Reaction, Ionization, and Dissolution (MADRID) model has been applied to estimate enhancements of
during Asian dust events in Korea. In particular, 5 experimental formulas were applied to the WRF-SMOKE-CMAQ (MADRID) model to estimate Asian dust emissions from source locations for major Asian dust events in China and Mongolia: the US Environmental Protection Agency (EPA) model, the Goddard Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model, and the Dust Entrainment and Deposition (DEAD) model, as well as formulas by Park and In (2003), and Wang et al. (2000). According to the weather map, backward trajectory and satellite image analyses, Asian dust is generated by a strong downwind associated with the upper trough from a stagnation wave due to development of the upper jet stream, and transport of Asian dust to Korea shows up behind a surface front related to the cut-off low (known as comma type cloud) in satellite images. In the WRF-SMOKE-CMAQ modeling to estimate the PM10 concentration, Wang et al.'s experimental formula was depicted well in the temporal and spatial distribution of Asian dusts, and the GOCART model was low in mean bias errors and root mean square errors. Also, in the vertical profile analysis of Asian dusts using Wang et al's experimental formula, strong Asian dust with a concentration of more than
for the period of March 31 to April 1, 2007 was transported under the boundary layer (about 1 km high), and weak Asian dust with a concentration of less than
for the period of 16-17 March 2009 was transported above the boundary layer (about 1-3 km high). Furthermore, the difference between the CMAQ model and the CMAQ-MADRID model for the period of March 31 to April 1, 2007, in terms of PM10 concentration, was seen to be large in the East Asia area: the CMAQ-MADRID model showed the concentration to be about
higher than the CMAQ model. In addition, the
concentration removed by the cloud liquid phase mechanism within the CMAQ-MADRID model was shown in the maximum
in the Eastern Asia area.
An Analysis on the Behavioral Characteristics of the Scientifically Gifted Students
Lee, Hang-Ro ;
Journal of the Korean earth science society, volume 32, issue 3, 2011, Pages 294~305
DOI : 10.5467/JKESS.2011.32.3.294
This study was to examine the differences of behavioral characteristics between scientifically gifted students and ordinary students. The subjects were 40 scientifically gifted students (27 males and 13 females) and 38 ordinary students (21 males and 17 females). The study specifically analyzed the several characteristics including logical thinking, science process skills, creativity, earth science creativity, self-directed learning, and cognitive style. The results were as follows; First, while 94.74% of scientifically gifted students reached the formal stage, only 36.36% of ordinary students reached it in logical thinking. Second, scientifically gifted students gained higher scores than ordinary students did in science process skills (average 8.11), creativity (average 8.27), earth science creativity (average 6.73), scientific attitude (average 10.79), self-directed learning (average 21.60). Third, 70% of scientifically gifted students and 60.53% of ordinary students showed to have the characteristics of field independent thinking. These results implied that the behavioral characteristics of scientifically gifted students should be included in science gifted education for the pursuit of the essential gifted education and maximization of its efficiency.
The International Comparative Study on the Origin of the Terms of Mineral and Rock
Lee, Chang-Zin ; Ryu, Chun-Ryol ; Cho, Jun-Oh ;
Journal of the Korean earth science society, volume 32, issue 3, 2011, Pages 306~323
DOI : 10.5467/JKESS.2011.32.3.306
The purpose of this study is to analyse the origin of the terms for well-known minerals and rocks in South Korean, North Korean, English, Chinese and Japanese. All of the terms for mineral and rock have been standardized in English and Chinese, Whereas not all of the terms are standardized yet in Japanese, North Korean and South Korean. Although many Korean researchers have recognized the fact and tried to standardize the terms, most of the terms for minerals and rocks have been used without any research conducted on them, which made it impossible. The terms for minerals were mainly made based on some of 28 geologic properties: chemical composition, color, shape and material. The terms for rocks were mainly originated from some of their 30 geologic properties: mineral composition, origin of rock, material and surface. 23 of the 124 English terms were named after the names of men or location, Whereas only 3 terms were originated from a name of place in the Eastern countries. In the Eastern countries, the terms for some minerals or rocks often consist of more complex geologic properties, compared with English terms for the same ones. For the minerals with complex geological properties, in the Eastern countries, there are 28 terms on average, which is much more than 2 in English. There are 9.25 terms in average for the rocks with complex geological properties in the Eastern while only 5 terms exist in English. Some of the Korean terms are very difficult for students to recognize what they are because the terms were originated from Japanese or English terms, which were translated into Korean without consideration of Korean contexts. Therefore the terms of rocks and minerals need to be discussed about their meaning and relevance.
Development of a History of Science Lesson Using the Content of 'Age Dating of the Earth'
Shin, Dong-Hee ; Kang, Hye-Jin ;
Journal of the Korean earth science society, volume 32, issue 3, 2011, Pages 324~333
DOI : 10.5467/JKESS.2011.32.3.324
The opinion, that the history of science should be introduced to science lesson, has been continuously emphasized by a group of people who supported the needs of science and scientific process, nature of science, and the interaction between science and society. When the importance of the integrated science education is emphasized, the history of science is suggested as an effective curriculum for it. To respond to this identified interest, we developed a lesson of the history of science by selecting the contents of the history of science as subject topics of the integrated science and by utilizing the findings of previous studies related to the history of science in science educations. To develop the history of science class as a subject of integrated science, we chose 'the age of the earth' as a unit. After the pilot test of the unit in secondary school students, the possibility of offering the lesson as a regular course was examined with analysis of the students' reactions showing its effectiveness.
Inservice Elementary Teachers' Perceptions of Teaching Skills and Educational Settings in Implementing a Problem Based Learning Approach
Choi, Hyun-Dong ;
Journal of the Korean earth science society, volume 32, issue 3, 2011, Pages 334~345
DOI : 10.5467/JKESS.2011.32.3.334
The purpose of this study was to find out inservice teachers' teaching skills and relevant educational settings that could be applied to an instruction of problem-based learning (PBL). Participants have been instructed PBL teacher training programs and applied PBL into teaching and learning process. Three elementary teachers were selected to participate in the study, and data were collected with semi-structured interviews. The interviews of the teachers in relation to PBL were analyzed by two main topics: (1) the teachers' teaching skills required in PBL and (2) the educational settings in implementing PBL. The results are as follows: First, there is a difficulty involved in the implementation of PBL in that its preparation and teaching process are different from the traditional teaching methodology. However, as a helper who guides the students to self-directed learning in the free and permissible learning environment in which students are motivated to develop their potential effectively, the teachers are to invest their time consistently and to put their efforts into making an effective class in the entire process of PBL. Second, as a method to apply the problem-based learning to the education settings, the teachers must spread the awareness of PBL to fellow teachers, students, their parents and the administrators in education and form the community of the teachers. Most importantly, when the teachers apply PBL in the directly, from the joy of witnessing the changes in the students, they will choose to adopt PBL.