Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Economic and Environmental Geology
Journal Basic Information
Journal DOI :
The Korean Society of Economic and Environmental Geology
Editor in Chief :
Volume & Issues
Volume 38, Issue 6 - Dec 2005
Volume 38, Issue 5 - Dec 2005
Volume 38, Issue 4 - Aug 2005
Volume 38, Issue 3 - Jun 2005
Volume 38, Issue 2 - Apr 2005
Volume 38, Issue 1 - Feb 2005
Selecting the target year
Geochemical Concept and Technical Development of Geological
Sequestration for Reduction of
Chae, Gi-Tak ; Yun, Seong-Taek ; Choi, Byoug-Youg ; Kim, Kang-Joo ; Shevalier, M. ;
Economic and Environmental Geology, volume 38, issue 1, 2005, Pages 1~22
Carbon dioxide (
) is the greatest contributor among the major greenhouse gases covered by the Kyoto Protocol. Therefore, substantial efforts for the control and reduction of
emissions, including increased efficiency of fossil fuel energy usage, development of energy sources with lower carbon content, and increased reliability on alternative energy sources, are being performed worldwide. However, development and industrial application of
sequestration techniques are needed to meet the requirements of the Kyoto Protocol. Among the
sequestration methods developed, geological sequestration methods such as the storage in deep aquifers, deep coal seams and oil and gas reservoirs and the mineral carbonation is considered most favorable because of its stability and environmental effectiveness. In this review, geochemical concepts and technologic development of geologic sequestration technology, especially the storage in deep aquifers and the mineral carbonation, are discussed. The weakness and strengths for each of geologic sequestration methods, are also reviewed.
Effect of Soil Organic Matter on Arsenic Adsorption in the Hematite-Water Interface: Chemical Speciation Modeling and Adsorption Mechanism
Ko, Il-Won ; Kim, Ju-Yong ; Kim, Gyeong-Ung ; An, Ju-Seong ; Davis, A. P. ;
Economic and Environmental Geology, volume 38, issue 1, 2005, Pages 23~31
This study was performed to investigate the effect of humic acid on the adsorption of arsenic onto hematite and its binding mechanism through the chemical speciation modeling in the binary system and the adsorption modeling in the ternary system. The complexation modeling of arsenic and humic acid was suitable for the binding model with the basis of the electrostatic repulsion and the effect of bridging metal. In comparison with the experimental adsorption data in the ternary system, the competitive adsorption model from the binary intrinsic equilibrium constants was consistent with the amount of arsenic adsorption. However, the additive rule showed the deviation of model in the opposite way of cationic heavy metals, because the reduced organic complexation of arsenic and the enhanced oxyanionic competition diminished the adsorption of arsenic. In terms of the reaction mechanism, the organic complex of arsenic, neutral As(III) and oxyanionic As(V) species were transported and adsorbed competitively to the hematite surface forming the inner-sphere complex in the presence of humic acid.
Landslide Susceptibility Analysis and Vertification using Artificial Neural Network in the Kangneung Area
Lee, Sa-Ro ; Lee, Myeong-Jin ; Won, Jung-Seon ;
Economic and Environmental Geology, volume 38, issue 1, 2005, Pages 33~43
The purpose of this study is to make and validate landslide susceptibility map using artificial neural network and GIS in Kangneung area. For this, topography, soil, forest, geology and land cover data sets were constructed as a spatial database in GIS. From the database, slope, aspect, curvature, water system, topographic type, soil texture, soil material, soil drainage, soil effective thickness, wood type, wood age, wood diameter, forest density, lithology, land cover, and lineament were used as the landslide occurrence factors. The weight of the each factor was calculated, and applied to make landslide susceptibility maps using artificial neural network. Then the maps were validated using rate curve method which can predict qualitatively the landslide occurrence. The landslide susceptibility map can be used to reduce associated hazards, and to plan land use and construction as basic data.
Application of GIS-based Probabilistic Empirical and Parametric Models for Landslide Susceptibility Analysis
Park, No-Wook ; Chi, Kwang-Hoon ; Chung, Chang-Jo F. ; Kwon, Byung-Doo ;
Economic and Environmental Geology, volume 38, issue 1, 2005, Pages 45~55
Traditional GIS-based probabilistic spatial data integration models for landslide susceptibility analysis have failed to provide the theoretical backgrounds and effective methods for integration of different types of spatial data such as categorical and continuous data. This paper applies two spatial data integration models including non-parametric empirical estimation and parametric predictive discriminant analysis models that can directly use the original continuous data within a likelihood ratio framework. Similarity rates and a prediction rate curve are computed to quantitatively compare those two models. To illustrate the proposed models, two case studies from the Jangheung and Boeun areas were carried out and analyzed. As a result of the Jangheung case study, two models showed similar prediction capabilities. On the other hand, in the Boeun area, the parametric predictive discriminant analysis model showed the better prediction capability than that from the non-parametric empirical estimation model. In conclusion, the proposed models could effectively integrate the continuous data for landslide susceptibility analysis and more case studies should be carried out to support the results from the case studies, since each model has a distinctive feature in continuous data representation.
Characteristics of Groundwater, Sewage Water and Stream Water Contamination Based on VOCs Concentration Around Ulsan, Korea
Cho, Byong-Wook ; Yun, Uk ; Im, Hyun-Chul ; Sung, Ig-Hwan ; Jang, Woo-Seog ;
Economic and Environmental Geology, volume 38, issue 1, 2005, Pages 57~65
To investigate the characteristics of the volatile organic compounds (VOCs) concentration in the groundwater around Ulsan, Korea, 168 groundwaters, 12 stream waters, and 6 sewage waters were analyzed for 61 VOCs. Results showed that VOCs were not detected in stream waters and total VOCs concentration in 5 sewage waters was in the range of ND-22.3
g/L. In 78 groundwater samples more than one VOCs were detected and VOCs concentration of the samples ranged from 0.1
g/L to 387.1
g/L. However, VOCs concentration of 66 samples out of 78 samples showed less than 10
g/L and that of only 6 samples exceeded Korea drinking water limit (KDWL). 42 VOCs detected from the 168 groundwaters were 14 aromatic hydrocarbons out of 25, 27 chlorinated aliphatic hydrocarbons out of 35, and methyl tert-butyl ether (MTBE). Detection rate of each VOCs in the groundwaters was as follows: chloroform in 43 samples (25.6%), methylene chloride in 36 samples (21.4%), TCE in 26 samples (15.5%), 1,1-dichloroethane in 19 samples (1.3%), PCE in 16 samples (9.5%), cis-1,2-DCE in 15 samples (8.9%), and toluene in 14 samples (8.3%). Even though VOCs concentration in the groundwaters of the study area is still low, the city is expanding and the drinking water limit is becoming strict, and therefore continuous monitoring is necessary.
Groundwater Flow Modeling in a Riverbank Filtration Area, Deasan-Myeon, Changwon City
Hamm, Se-Yeong ; Cheong, Jae-Yeol ; Kim, Hyoung-Su ; Hahn, Jeong-Sang ; Cha, Yong-Hoon ;
Economic and Environmental Geology, volume 38, issue 1, 2005, Pages 67~78
Riverbank filtration has been used in advanced countries for 150 years. In Korea, investigations for producing riverbank filtrate started in the Han River, Nakdong River, Geum River, Yeongsan River and Seomjin River basins in the 1990s. The lower part of the Nakdong River has a poorer water quality than the upper part of the river. A water balance analysis and groundwater flow modeling were conducted for the riverbanks of the Nakdong River in Daesan-Myeon, Changwon City. The results of the water balance analysis revealed the groundwater infiltration rate into the aquifer to be 245.26 mm/year (19.68% of the average annual precipitation, 1,251.32 mm). Direct runoff accounts for 153.49 mm/year, evapotranspiration is 723.95 mm/year and baseflow is 127.63 mm/year. According to the groundwater flow modeling, 65% of the total inflow to the pumping wells originates from the Nakdong River, 13% originates from the aquifer in the rectilinear direction, and 22% originates from the aquifer in the parallel direction. The particle tracking model shows that a particle moving from the river toward the pumping wells travels 100 m in 50 days and a particle from the aquifer toward the pumping wells travels 100 m in 100 days.
Analysis of Hydraulic Gradient at Coastal Aquifers in Eastern Part of Jeju Island
Kim, Kue-Young ; Shim, Byoung-Ohan ; Park, Ki-Hwa ; Kim, Tae-Hee ; Seong, Hyeon-Jeong ; Park, Yun-Seok ; Koh, Gi-Won ; Woo, Nam-Chil ;
Economic and Environmental Geology, volume 38, issue 1, 2005, Pages 79~89
Groundwater level changes in coastal aquifers occur due to oceanic tides, where the properties of oceanic tides can be applied to estimate hyadraulic parameters. Hydraulic parameters of coastal aquifers located in eastern part of Jeju island were estimated using the tidal response technique. Groundwater level data from a saltwater intrusion monitoring well system was used which showed tidal effects from 3 to 5 km. The hydraulic gradient was assessed by utilizing the filtering method from 71 consecutive hourly water-level observations. Calculated hydraulic diffusivity ranged from 2.94
. The hydraulic gradient of the coastal aquifer area was found to be ~
, whereas the gradient of the area between wells Handong-1 and 2 was found to be ~
, which is very low comparatively. Analysis of groundwater monitoring data showed that groundwater levels are periodically higher near coastal areas compared to that of inner land areas due to oceanic tide influences. When assessing groundwater flow direction in coastal aquifers it is important to consider tidal fluctuation.
Generation Characteristics and Prediction of Acid Rock Drainage(ARD) of Cut Slopes
Lee, Gyoo-Ho ; Kim, Jae-Gon ; Lee, Jin-Soo ; Chon, Chul-Min ; Park, Sam-Gyu ; Kim, Tack-Hyun ; Ko, Kyung-Seok ; Kim, Tong-Kwon ;
Economic and Environmental Geology, volume 38, issue 1, 2005, Pages 91~99
Acid Rock Drainage(ARD) is the product formed by the atmospheric(i.e. by water, oxygen and carbon dioxide) oxidation of the relatively common iron-sulphur mineral pyrite(
). ARD causes the acidification and heavy metal contamination of water and soil and the reduction of slope stability. In this paper the generation characteristics and the prediction of ARD of various cut slopes were studied. An attempt to classify the rocks into several groups according to their acid generation potentials was made. Acid Base Accounting(ABA) tests, commonly used as a screening tool in ARD predictions, were performed. Fourteen rock samples were classified into PAF(potentially acid forming) group and four rock samples into NAF(non-acid forming) group. The chemical analysis of water samples strongly suggested that ARD with high content of heavy metals and low pH could pollute the ground water and/or stream water.