• Journal of The Korean Association For Science Education
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• v.31 no.3
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• pp.429-439
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• 2011

The purpose of this study was to analyze the Jeju beach science camp program and to survey the participating students'' preference levels for the activities included therein. The camp programs were analyzed on the basis of the standards set for the HASA curriculum. The program's "manipulatory skill" area included many manipulatory and creative activities while the "inquiry area" included many basic and integrated inquiry activities. It was also indicated that the "knowledge area" included many activities appropriate for understanding concepts and principles while the "attitude area" included many activities appropriate for stimulating curiosity and enjoyment. Thus, it could be seen that the areas stipulated for the HASA curriculum were considerably consistent with the purpose of the science camp. The participating students showed preference for manipulatory and creative activities included in the program. They also preferred basic, inquiry level activities included under the area of "inquiry skills." It was identified that the students most preferred the conceptual stage included under the area of "knowledge" where they were required to grasp the common characteristics of events, things, and phenomena, as also the enjoyment stage included under the "attitude" area, where they were required to participate in pleasant science activities. These findings indicate that science camp programs should be composed of manipulatory and creative activities as well as activities that aim at basic research and the understanding of concepts.

• Journal of Ocean Engineering and Technology
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• v.26 no.1
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• pp.47-53
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• 2012

A coastal flood area was predicted using the empirical superposition of the typhoon surge level and typhoon wave height along the Busan coastal area. The historical typhoon damages were reviewed, and the coastal topography was measured using VRS-GPS. A FEMA formula was applied to estimate the coastal flood area in a typhoon case when the measured and predicted data of typhoon waves are not available. The results in the area of Haeundae beach and Gwangalli beach were verified using the flood area data from the case of Typhoon Maemi (2003). If a Hurricane Katrina class typhoon were to pass through the Maemi trajectory, the areathat would be flooded along theBusan coastal area was predicted and compared with the results of the Maemi case. Because of the lack of ocean environment data such as data for the sea level, waves, bathymetry, wind, pressure, etc., it is hard to improve the prediction accuracy for the coastal flood area in the typhoon case, which could be reflected in the policy to mitigate a typhoon's impact. This paper discusses the kinds of ocean environment information that is needed to predict a typhoon's impact with better accuracy.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.6
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• pp.729-736
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• 2015

In this study, It was analyzed to estimate the origin from the collected disposable lighters with the printed company name and telephone number on the surface. Monitoring was done bimonthly from 2 areas of sandbar Coastline of Nakdong River Estuary(Jinu-do, Shinja-do) and 3 areas(Doomo beach, Heungnam beach, Yeocha beach) of Northeastern coast of Geoje-do. As a result of the monitoring, there were 166 lighters collected. Then, the monthly occurrence amount was concentrated in Jun, August. The origin of Disposable lighters that flowed in study area were mostly cause to the Nakdong River basin region and the coastal area where population densities are high.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.49 no.2
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• pp.241-246
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• 2016

A filamentous green alga Cladophora vadorum (Areschoug) Kützing, bloomed at Shangrok Beach, Buan, Republic of Korea, in September 2015. This alga is currently distributed worldwide. Concentrations of total nitrogen (TN), total phosphorus (TP), dissolved inorganic nitrogen (DIN), and dissolved inorganic phosphorus (DIP) were analyzed in the bloom area and compared to those of other areas in the vicinity. DIN and DIP concentrations were similar to those of other areas. However, TN and TP were as much as six and ten times higher than in other areas, respectively. As in other Cladophora species, the bloom of C. vadorum at Shangrok Beach in 2015 appears to have depended on the TP concentration in the seawater. This suggests that blooms in the area can be controlled by reducing TP.

• Journal of Fisheries and Marine Sciences Education
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• v.25 no.1
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• pp.78-86
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• 2013

In order to analyze the pollution extent of small plastic debris(SPD) ashore on the shoreline of coastal flow, 12 of survey was conducted at Song-Jung beach of Busan for several years. The sampled beach was divided into 9 sites with unit area($m^2$). Many of SPD were detected in the southern part of the beach and classified into 11 items as P1 to P11 according to the contents. Average densities of total items' weight were $2.955g/m^2$ and weights of P2, P3 item were composed of about 64% among them. And average densities of total items' quantity were $56.259ea/m^2$ and quantities of P6 only were composed of about 63%. Seeing the seasonal variation, fall season was abundant extremely whereas nearly nothing in spring. The correlation of weights and quantities have reliable coefficients to some extent on sites and season but nearly don't have reliances on item, tide, wind and precipitation. Many researching data were required if possible in order to discussing about the correlation.

• International Journal of Naval Architecture and Ocean Engineering
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• v.2 no.2
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• pp.68-74
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• 2010

The development of a numerical model using the fractional area/volume obstacle representation (FAVOR) method for predicting a nearshore current field bounded by complicated geometric shapes, and a three-dimensional (3D) beach evolution was described in this article. The 3D model was first tested against three cases to simulate the nearshore current fields around coastal structures, a river mouth, and a large scale cusp bathymetry. Then, the morphodynamic model tests, which are adopting the nearshore current model, were applied for the computations of beach evolution around a detached breakwater and two groins. It was confirmed that the presented model associated with the FAVOR method was useful to predict the nearshore current field in the vicinity of the complicated geometric shapes. Finally, the model was applied to a tombolo formation in a field site of Kunnui fishery port, which is located in Hokkaido, Japan.

• Journal of the Korean association of regional geographers
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• v.10 no.4
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• pp.851-864
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• 2004

A coastal dune field, located at Kimnyong-Wolchung beach in Jejudo, Korea, extends alongshore for about 4 km, with dunes extending inland about 6 km. Detailed geomorphological analysis of the area was carried out by using areal photography and Landsat images. Samples were collected across two transects, and physical and chemical properties are analyzed to detect the variation of both properties depending on distance form the beach. Paleosol layers found during the field trip suggest that dune emplacement is episodic. Radiocarbon dates from nearby Hyupjae beach indicate that dunes have been formed during the late Holocene by the disturbance of calcareous materials.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.24 no.6
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• pp.373-380
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• 2012

The sandy beach along the east coast of Korea offers beautiful scenery with high-quality sand for leisure, and is also famous for the white-sand and pine-tree which is an important scenic resource. Furthermore, the sandy beach helps to maintain natural environment of the costal area and functionates as a disaster prevention system against high waves. There are two major value evaluation methods, Travel Cost Method and Contingent Valuation Method, to assess the value of coastal sandy beach. Contingent Valuation Method is considered to be more appropriate for simultaneous evaluation on the usefulness and the uselessness of the beach. But in order to apply Contingent Valuation Method to coastal sandy beach evaluation, close examination and investigation on the potential bias, such as on questionnaires, surveys and replies, are required. In this study, the characteristic of primary amenity of sandy beach users is investigated, in prior to evaluating the usefulness and the uselessness of the beach measured by contingent valuation method. The characteristic of amenity on major sandy beaches on the east coast of Korea is studied and compared by diverse value evaluation methods.

• Journal of the Korean Society of Marine Environment & Safety
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• v.16 no.2
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• pp.223-228
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• 2010

In the midst of worldwide response to climate change, the advanced ports including LA/LB(Los Angeles/Long Beach) has started to reduce carbon emission from port area which has not been targets of interests in the worldwide cooperation. Recently, the Port of Busan has started to reduce carbon emission from the port area under the Green Port Strategy in Korea. However, the low-carbon port management increases the cost of port management and negatively impacts the port competitiveness in the short term. Therefore, the Busan Port Authority is carrying out the low-carbon projects directly and has not transfer the cost to the port users, such as shipowers, cargo owners and terminal operators. However, the Port Authority of LA/LB has transferred the cost at low-carbon port management to customers of port. In this study, comparative analysis on cost of low-carbon port management at Busan and LA/LB is carried out for sustainable port management.

• Journal of The Geomorphological Association of Korea
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• v.17 no.1
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• pp.15-27
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• 2010

This study investigated the sedimentary environment changes in the Baramarae beach of Anmyeondo through spatio-temporal surface sediment analysis. In the winter season 2009, surface sediments were classified into 7 sedimentary facies such as gravel, sand, gravelly sand, gravelly muddy sand, muddy sand, silty sand, and sandy silt. Time-series analysis of average grain size from 2002 to 2009 revealed that the average grain size of sediments became finer and sorting was much worse. On the contrary, during the same period, the grain size became coarsening-trend and sorting was much better in beach area. These different grain size patterns resulted from the different change characteristics of beach and tidal flats. The southwestern beach area was connected to the open sea and thus fine sediments were removed by the environments with relatively high-energy. The sedimentation of fine sediments in the bay resulted from the tidal current action and the reduction of energy by the topographic effects. Fine sediments in the outer part of southwestern tidal flats could be explained such that the Seomot isle blocked ocean waves and as a result, low-energy environments accelerated sedimentations of fine sediments.