• Journal of Ocean Engineering and Technology
• /
• v.19 no.4 s.65
• /
• pp.35-41
• /
• 2005

There has been increasing offshore oil exploration, drilling, and production activities, as well as a huge amount of petroleum being transported by tankers and pipelines through the ocean and costal environment. Assessment must be made of the potential risk of damage resulting from the exploration, development and transportation activities. This is achieved through predictive impact evaluations of the fate of hypothetical or real oil spills. VVhen an oil spill occurs, planning and execution of cleanup measures also require the capability to forecast the short-term and long-term behavior of the spilled oil. A great amount of effort has been spent by government agencies, oil industries, and researchers over the past decade to develop more realistic models for oil spills. Numerous oil spill models have been developed and applied, most of which attempt to predict the oil spill fate and behavior. For an actual contingency planning, the oil fate and behavior model should be combined with an oil spill incident model, an environmental impact and risk model and a contingency planning model. The purpose of this review study is to give an overview of existing oil spill models that deal with the physical, chemical, biological, and socia-economical aspects of the incident, fate, and environmental impact of oil spills. After reviewing the existing models, future research needs are suggested. In the study, available oil spill models are separated into oil spill incident, oil spill fate and behavior, environmental impact and risk, and contingency planning models. The processes of the oil spill fate and behavior are reviewed in detail and the characteristics of existing oil spill fate and behavior models are examined and classified so that an ideal model may be identified. Finally, future research needs are discussed.

• Journal of Korean Society of Forest Science
• /
• v.101 no.2
• /
• pp.259-265
• /
• 2012

The purpose of this study intends to suggest a basic information to establish protected area policy by analyzing environmental consciousness and environmental protection behavior of citizen after Hebei Spirit oil spill. During May-June of 2011, a total of 987 respondents completed at 5 major cities (Seoul, Busan, Daegu, Daejeon, Gwangju) in Korea. The result showed that more previous experience of environment as recognition of oil spill damaged area, volunteer activity experience, participation in the organization for environmental conservation, and participation in education program led to more positive attitude to environment. Therefore, the result of this study will contribute to manage protected area in balancing ecological conservation and utilization.

• Journal of Korean Society of Coastal and Ocean Engineers
• /
• v.23 no.3
• /
• pp.193-204
• /
• 2011

To develop more robust oil boom which is vulnerable to various failure mode under severe weather condition, highly accurate wave model is developed using Spatially filtered Navier-Stokes Eq., LDS (Lagrangian Dynamic Smagorinsky model) for residual stresses, SPH (Smoothed Particle Hydrodynamics). To clarify the hydraulic characteristics of floating type oil boom, we numerically simulate the behavior of oil spill around oil boom under very energetic progressive waves. At the first stage, we firmly anchored the oil boom, and then, allowed the excursion of the oil boom. It turns out that oil boom with skirt of enough length (longer than 30% of depth) effectively confines the oil spill even against very energetic waves. We can also observe obliquely descending vertical eddies between y = 1~2 m as horizontal vortices shedding at the interface of oil spill and water are diffused toward the bottom, which is believed to be the birth, growing and break-down of Kelvin-Helmholz wave.

• Journal of the Korean Society for Marine Environment & Energy
• /
• v.1 no.2
• /
• pp.52-59
• /
• 1998

Many concerns are placed on preservation of coastal environment from the spilled oil contaminant in the coastal area. And the use of computer simulation model to combat with oil spill has come to play mote important role in forecasting the oil spill trajectory so as to protect coastal area and minimize the damage from oil contaminants. The main concerns of this study is how the movements of spilled oil are affected by currents including tidal, oceanic, and wind-driven currents. Especially, in the present paper, the oil spill trajectory can be predicted by a real-time system that allows prediction of circulation and wind field. The harmonic methods are adopted to simulate the tidal currents as well as it can be possible to achieve the wind-field data and oceanic current data from the established database. System performance is illustrated by the simulation of oil spill in the south-eastern coastal area of Korea. Simulation results are compared with the observed one.

• Journal of the Korean Society for Marine Environment & Energy
• /
• v.1 no.1
• /
• pp.56-65
• /
• 1998

An oil spill model, Green Sea Ranger(GSR) based on trajectory and fate modeling of spilt oil behavior is introduced. The various physical models on weathering processes are reviewed and those adopted by GSR are described. A database for currents, which is necessary for the real-time simulation of oil spill, is generated on the south sea of Korea. The real-time prediction of tidal currents in the South Sea of Korea is carried out. Four major constituents (M₂, S₂, K₁, O₁ tide) are employed in the prediction, and those angular speeds and phases are determined from the astronomical arguments. The harmonic constants of the constituents are computed by solving shallow-water tide equations. The GSR has user-freiendly GUI and flexible framework which makes it easy to expand the database for sea environments in Korean coastal waters. The GSR is validated by the simulation of O-Sung oil spill caused by a grounded oil tanker in coastal sea near Maemol-do. The simulated trajectory is compared with observed one and it is shown that the GSR gives reasonable estimation on spilt oil bahavior.

• Journal of Korean Society on Water Environment
• /
• v.39 no.6
• /
• pp.439-450
• /
• 2023

The Yeongsan River, a major water resource for Jeollanam-do, that is adjacent to industrial complexes and agricultural areas, is exposed to water pollution. Therefore, it is necessary to investigate the impact of water pollution incidences and prepare response systems for river environment safety for other water resources in the future. Environmental Fluid Dynamics Code (EFDC) was applied to the mainstream of the Yeongsan River where residential, commercial, and agricultural areas are located to analyze the behavior of pollutants conducting the scenario analysis. Considering the pollutants that affected the study area, two pollutants, oil and benzene, with different physical and chemical characteristics were selected for the analysis. As a result of comparing the actual and simulated values of the water elevation, temperature, and flow rate, it was confirmed that the model adequately reproduced the hydraulic characteristics of the Yeongsan River. The oil flow dynamics showed that an increase in flow rate led to reduction in the maximum height of the slick. Notably, the behavior of the oil was predominantly influenced by the wind conditions. In the case of benzene, lower flow scenarios exhibited decreased arrival times and residence times accompanied by an elevation in the maximum concentration levels. From the results of pollutant behavior in the study area, it is feasible to utilize the section of tributary confluence for collection and the weir area for dilution. This study enhances the understanding of the pollutant's behavior with different characteristics and develops effective control systems tailored to the physicochemical attributes of pollutants.

• Proceedings of KOSOMES biannual meeting
• /
• 2008.05a
• /
• pp.115-116
• /
• 2008

A big accident of oil spill occasionally occur in coast of Korea according to increase of sailing of oil tank ship in recently. This study was focused on transformation and behavior of spilled oil in ocean and effect of spilled oil on environment and introduce the methods of analysis of spilled oil, compensation for the damage caused by spilled oil.

• The Journal of Engineering Geology
• /
• v.25 no.4
• /
• pp.577-585
• /
• 2015

Contamination of soil due to an oil spill influences its subsequent behavior. An investigation was conducted to study the effect of oil viscosity on compaction characteristics, coefficient of permeability, and shear strength. Water permeability was also determined by using Kerosene, Engine oil, and Crude-oil as contaminants. The test results indicate that the compaction characteristics are influenced by oil contamination. Direct shear test was conducted to investigate the effect of oil in the pore space in sandy ground. angle of internal friction of sand (based on total stress condition) decreases due to presence of oil within the pore spaces in sand.

• Proceedings of KOSOMES biannual meeting
• /
• 2006.11a
• /
• pp.169-174
• /
• 2006

A distinctive difference of hydrocarbon in crude oil and petroleum products exists. Depending on the origin where it comes from, crude oil shows its own unique pattern which is different from petroleum products containing characteristics according to their operating process and production period. A process of mixing behavior in a tank containing residual amounts of oil draws its own pattern when analysis is conducted. The analytical process described above is named oil fingerprint method. This study investigates an effectiveness of the method for comparing data sets produced by conventional gas chromatography with mass spectrometer (GC/MS) and comprehensive two-dimensional gas chromatography (GC X GC) which is known as powerful new technology for chemical analysis.

• Journal of the Society of Disaster Information
• /
• v.18 no.2
• /
• pp.343-350
• /
• 2022

Purpose: The Taean oil spill in 2007 taught us a great lesson and is a representative example of a social disaster. It was overcome through the dazzling dedication and service of volunteers. However, behind the volunteers, they were directly or indirectly exposed to the spilled oil, resulting in health problems such as headaches and safety accidents. Safety accidents were caused by unsafe behavior, and unsafe behavior was caused by lack of safety awareness or ignorance. We want to find an education and training program to systematically raise safety awareness for volunteers in connection with the Occupational Safety and Health Act. Method: The occupational safety and health law, the laws related to coastal clean-up, and the unsafe behavior factors in the statistics of occupational accidents in the past year were mainly identified. Result: The contents of education and training hours to be provided for volunteers involved in coastal clean-up were presented in comparison with workers under the Occupational Safety and Health Act. Conclusion: Safety and health education for volunteers and volunteer managers is directly related to safety awareness and can prevent unsafe behavior.