International Coastal Symposium Research Articles

Monthly Variations in the Intracellular Nutrient Pools of Phytoplankton in Jaran Bay, Korea

ABSTRACT Lee, J.H.; Kim, H.C.; Lee, T.; Lee, W.C.; Kang, J.J.; Jo, N.; Lee, D.; Kim, K.W.; Min, J.-O.; Kang, S., and Lee, S.H., 2018. Intracellular nutrient pools in the Jaran Bay, South Korea. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 331–335. Coconut Creek (Florida), ISSN 0749-0208. It is important to understand intracellular nutrient pools of phytoplankton as a major nutrient remover in coastal areas. The water samples for intracellular nutrient concentrations (ammonium, nitrite + nitrate, phosphate, and silicate) of different sizes phytoplankton and nutrient conditions in ambient water column were monthly obtained in a southern coastal area of Korea, Jaran Bay from February to December 2016. The intracellular nutrients of phytoplankton were extracted by the method of osmotic shock combined with heating. The intracellular nutrient concentrations durin...

Numerical Simulation of Tidal Bores using SPH Method

ABSTRACT Ni X.; Huang S.; Feng W., and Yao W., 2018. Numerical simulation of tidal bores using SPH method. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 951–956. Coconut Creek (Florida), ISSN 0749-0208. A tidal bore is a natural hydraulic phenomenon normally formed in funnel-shaped estuaries with large tidal ranges. Water levels and flow velocities change rapidly in both magnitude and direction when a tidal bore arrives. These strongly nonlinear water body movements have significant influences on scouring and deposition processes along the riverbed and produce hydrodynamic impacts on piers and dikes. In this paper, a mesh-free numerical method known as the smoothed particle hydrodynamics (SPH) method is used to implement a numerical model capable of handling complex free-surface flows and solve the Navier-Stokes equations with a large-eddy simulation. A tida...

Stability on Concrete Armor Unit at Sharply Curved Corner

Lee, J.-I. and Kim, Y.-T., 2018. Stability on Concrete Armor Unit at Sharply Curved Corner. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 1116–1120. Coconut Creek (Florida), ISSN 0749-0208.The breakwaters are one of the most important structures in coastal areas. In the design of rubble mound structures, accurate determination of the stable weight of concrete armor units is critical. This can be calculated using the Hudson or van der Meer formula, wherein the breakwater is assumed straight and the waves are assumed to propagate normally to the structures. The weight of concrete armor units at the head should be at least 1.3–1.6 times that at the trunk. However, design standards for the damage inflicted to concrete armor units at the convex corner of a breakwater are lacking. In this study, three-dimensional hydraulic model tests were performed to determine the stable weight of concrete armor units at the convex corner. Tetrapods were used as the target concrete armor units. The stable weight is suggested using a stability coefficient using Hudson formula. The results show that the stable armor weight at the convex corner is similar to that at the roundhead, could conclude that the weight at the convex corner should be approximately 1.4 times that at the trunk.

An Inventory of Historic Storms and Cyclone Tracks That Have Caused Met-Ocean and Coastal Risks in the Eastern Baltic Sea

Suursaar, U.; Sepp, M.; Post, P., and Mall, M., 2018. An inventory of historic storms and cyclone tracks that have caused met-ocean and coastal risks in the eastern Baltic Sea. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 531–535. Coconut Creek (Florida), ISSN 0749-0208.Located on relatively high latitudes, the eastern section of the practically tideless Baltic Sea is frequently battered by extratropical cyclones that have caused storm surges of up to 421 cm (at St. Petersburg, Russia), and 275 cm at Parnu (Estonia). The analysis of storms includes the events that have yielded the highest sea levels at Parnu and Narva-Joesuu tide gauges on an annual basis from 1950–2016. For each event, corresponding cyclone tracks have been extracted from the cyclone database, which is based on NCEP/NCAR reanalysis of air pressure fields in a six–hour interval. Track matches for 109 surge cases were found, including 43 for Parnu, 42 for Narva-Joesuu, and 24 common for both locations. Although cyclones from several distinct directions can approach Estonia and the Gulf of Finland area, the most serious meteorological, oceanographic (met-ocean), as well as coastal impacts were connected to westerly approaching deep cyclones with tracks crossing Scandinavia and Southern Finland. A suitable course for the cyclone and a pre-elevated (by up to 70 cm) average Baltic Sea level as a result of preceding series of cyclones are among the important factors which may result in destructive event.

Tide Influence on Suspended Matter Transport in an Amazonian Estuary

Rollnic, M.; Costa, M.S.; Medeiros, P.R.L., and Monteiro, S.M., 2018. Tide Influence on Suspended Matter in an Amazonian Estuary. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 121–125. Coconut Creek (Florida), ISSN 0749-0208.The aim of this study is to check which tidal component (dispersive or diffuse) dominates suspended particulate matter transport (SPM) in the Mojuim River estuary. This estuary comprises the eastern sector of the Amazon coast, characterized by mangrove-vegetated tidal flats. Measurements of current intensity and direction, SPM, and tide level over a tidal cycle (13 h) were performed in a section of the lower estuary. Samplings were conducted in March (wet season) and September (dry season), 2014, during spring tide. The resulting transport and relative contribution of advective transport (SPM diffusion and dispersion) were calculated. Mojuim estuary has a macrotidal regime, with mean height of 4.9 m during spring tide and 3.2 m during neap tide. As it is a shallow environment, the water column is homogeneous, and hydrological parameters do not significantly vary along the water column. SPM ranged from 12 to 92 mg.L−1 during dry season and from 20.4 to 94.8 mg.L−1 during wet season. The highest SPM concentrations occurred during ebb tide, and this determined the maximum instantaneous transport, both during wet season (127.8 kg.s−1) and dry season (159 kg.s−1). This estuary is characterized as an exporter environment. During dry season, it had a residual transport of 4.1 kg.s−1 and a total transport of 191.9 tons downstream of the estuary. However, during wet season, it showed an inversion in advective transport due to equinoctial tidal influence, which caused a higher tidal prism thus resulting in a residual transport of 1.92 kg.s−1 and a total transport of 90 tons upstream of the estuary. The dominant SPM transport component downstream of the estuary was river discharge, whereas SPM transport upstream of the estuary was dominated by Stokes Transport.

Estimation of Depth of Closure Near Gangneung Port in Korea

Kang, H., Chun, I., and Oh, B., 2018. Estimation of the Depth of Closure Near Gangneung Port in Korea. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 1361–1365. Coconut Creek (Florida), ISSN 0749-0208.Various methods to cope with coastal erosion have been tried in the East Coast of Korea, among which the regional sediment management (RSM) is now being perceived as a very efficient way for managing limited sand resources in a macroscopic scale in both time and space. To apply RSM, it is necessary to set up the littoral cell, a control volume concept whose offshore boundary is given by the depth of closure (DOC). In this study, an independent littoral cell near Gangneung Port was set up, and a method to determine its DOC was proposed and applied utilizing the existing data of deep-water wave climate. Within the method, several formulas were tested, and the results showed that that the average DOC of the study area varied from 10 m to 52 m depending on sediment size, wave condition, and the formula used. Finally, the Hallermeier's formula of outer DOC was postulated to give a reasonable DOC of the Gangneung littoral cell.

A Study of the Contaminated Sediment Management System in Korea, with Suggestions for Improvement

Choi, J.Y.; Kim, S.H.; Won, E.-J.; Yang, D.B.; Chung, C.S.; Kim, K.; Choi, K.Y.; Ra, K.; Kim, K.-T.; Yim, J.Y.; Lim, C.W., and Hong, G.H., 2018. A Study of the Contaminated Sediment Management System in Korea, with Suggestions for Improvement. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 1426–1430. Coconut Creek (Florida), ISSN 0749-0208.Coastal sediment management, particularly the remediation and sustainable use of dredged contaminated marine sediments, is a critical issue in Korea as it is around the world. Since 1988, the Korean Ministry of Oceans and Fisheries has been conducting projects to clean up contaminated marine sediments. The objective of this study was to analyze the management of Korea's coastal sediments and investigate how the Contaminated Sediment Management System (CSMS) could be improved, so as to strengthen the sustainability of the clean-up projects. The state of the CSMS was diagnosed and improvements were developed by reviewing relevant research, interviewing field experts, and holding meetings with researchers, specialists, and government officials. These improvements were aimed at 1) developing a sustainable and practical CSMS and 2) strengthening the responsibility of local governments for managing coastal pollution.

An Experimental Study on the Interaction between Oscillatory Flow and Idealized Porous Bed

Shigematsu, Sota Nakajo, and Yuya Okada, 2018. An Experimental Study on the Interaction between Oscillatory Flow and Idealized Porous Bed. In: Shim, J.S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 981–985. Coconut Creek (Florida), ISSN 0749-0208.The microscopic structures of over and inside flow of a porous medium placed in oscillatory flow was measured by the Particle Tracking Velocimetry with the refractive index matching method in order to investigate interaction between them. The strong shear flow was observed over the surface of the porous medium and the thickness of shear flow varied with the phase of the oscillatory flow. It was found that the thickness of non-dimensional shear flow was almost constant and that it did not depend on the Reynolds number. It was found that the thickness of non-dimensional shear flow was almost constant and it independented with the Reynolds number. Besides, it was also found that the phase difference between flows over and inside the porous bed occurred. The characteristics of the spatial variance of velocity components were shown in detail with the time phase variance. Further, the flow properties around the particle constitutes porous body were measured and investigated in detail.

Coastal Hazards Caused by Different Extreme Storms in the Bohai Sea, China

Zhou, C.Y.; Xu, C.Y.; Zhang, J.S.; Fu, X.Y., and Yin, Y., 2018. Coastal hazards caused by different extreme storms in the Bohai Sea, China. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 816–820. Coconut Creek (Florida), ISSN 0749-0208.The Bohai Sea, a semi-enclosed epicontinental sea, suffers different storms frequently, mainly tropical cyclones in summer/autumn and cold waves in winter/spring. The extreme storms can cause severe coastal hazards such as flooding, coastal structures and ocean platforms failures. A numerical model is set up for the Bohai Sea using MIKE21 with coupled hydrodynamic and wave modules. Observed data of water levels, velocities and wave are used to make model calibration. Based on this model, three typical tropical cyclones and cold waves are simulated. Then the major characteristics of summer tropical cyclones and winter cold waves are discussed. Affected by the tropical cyclone, the water levels of Laizhou Bay and Bohai Bay increase and that of Liaodong Bay decreases. Influenced by the cold wave coupled with an extratropical cyclone, the water levels of Laizhou Bay and Bohai Bay decrease firstly and then increase, which is contrary to the variation trend of water level at Liaodong Bay. Under the single cold wave weather, the water level increases at Laizhou Bay, decreases at Liaodong Bay, and firstly increases then decreases at Bohai Bay. The maximum of surge level caused by cold wave coupled with extratropical cyclone is smaller than that induced by tropical cyclone and single cold wave weather.

Monitoring Applications for Multifunctional Unmanned Surface Vehicles in Marine Coastal Environments

ABSTRACT Kum, B.-C.; Shin, D.-H.; Lee, J.H.; Moh, T.J.; Jang, S.; Lee, S.Y., and Cho, J.H., 2018. Monitoring Applications for Multifunctional Unmanned Surface Vehicles in Marine Coastal Environments. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 1381–1385. Coconut Creek (Florida), ISSN 0749-0208. This work investigates the application of unmanned surface vehicles (USVs) for the management of coastal environment. USVs are an important and highly accessible tool for operating in shallow and nearshore waters. Sea trials are used to test the maneuverability and bathymetric survey capabilities of USVs. The results show that USVs have the potential to be an integrative platform for surveying shallow water zones (rivers, estuaries, and coasts), which can be enhanced by installing various transducers and sensor modules. The advances in sensing technologies and micro...

The Application of Dynamic Tidal Power in Korea

Park, Y.H., 2018. The Application of Dynamic Tidal Power in Korea In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 1306–1310. Coconut Creek (Florida), ISSN 0749-0208.Tidal power is attractive as a predictable renewable energy, but it requires a high tidal range. The west coast of Korea is a place where the extreme tidal range is observed, so various studies have been conducted. The largest tidal power, Sihwa Tidal Power Station was successfully built and operated there. However, subsequent projects have been postponed or cancelled due to environmental issues. Dynamic Tidal power (DTP) is an alternative way to a conventional tidal barrage system. Because DTP has to be a huge structure to produce diffraction of tides, it was tested by a numerical model. The 2D numerical model ADCIRC was used in the simulation. DTP was simulated in the largest tidal range of the Korean coast and it was examined in various ways. DTP generates power by the phase difference of tide and it is available even in a small tidal range. The tidal difference between the front and back of DTP becomes maximized on 180 degrees out of phase theoretically. Though the phase difference also increased with the length of DTP structure, it could not reach 180 degrees out of phase even at the DTP length of 50 km. Because the length of DTP structure should be longer than tens of kilometers considering the length of tide, it may cause economic and environmental issues. The phase difference was varied along DTP and it was increasing as the location of measurement moved closer to the coast. When the required length of DTP is optimized, it would be more practical. The study focused on the reduction of the DTP length and some shapes were suggested finally.

Analysis of Wind Field over an Artificial Straight Dune by LES Simulations

ABSTRACT Kuribayashi., T. and Udo., K., 2018. Analysis of wind field over an artificial straight dune by LES simulations. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 301–305. Coconut Creek (Florida), ISSN 0749-0208. This study analyzed the wind fields around an artificial straight dune by large eddy simulations to investigate the mechanism of its separation into smaller dunes in more than 10 years at the Kashima Coast. The results showed that the change in ground height at the leeward slope was positive at almost all locations, but negative approximately every 50 m when the inflow wind was from an onshore direction. The change decreased approximately every 100 m where the inflow wind was from an offshore direction. The change in 15 years was positive at almost all locations, but at some locations on the south side, the change was negative; however, the cha...

Study on Storm Surge Prediction Model Considering Typhoon Characteristics for Largest Scale

ABSTRACT Kim, Y.-J.; Itoh, S.; Oya, Y., and Yoon, J.-S., 2018. Study on storm surge prediction model considering typhoon characteristics for largest scale. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 736–740. Coconut Creek (Florida), ISSN 0749-0208. The coastal area of Japan has been damaged yearly with many storm surges and flooding disasters in the past, including those associated with tropical cyclones (TCs). Also, the scale of damage is increasing rapidly due to the changing global climate and environment. As the disasters due to storm surges become unpredictable, more measures should be taken to prevent serious damage and casualties. Therefore, in this study, the aim is to mitigate the unpredictable damage by assuming storm surges of the largest scale and to propose a storm surge model that considers the characteristics of TCs. The main objectives of ...

Numerical Simulation of Fortnightly Modulations of the Convergence Zone by Residual Volume Transport in a Macrotidal Estuary

ABSTRACT Woo, S.-B. and Yoon, B.I., 2018. Numerical simulation of fortnightly modulations of the convergence zone by residual volume transport in a macrotidal estuary. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 606–610. Coconut Creek (Florida), ISSN 0749-0208. This study examines the fortnightly modulation of convergence zone by residual volume transport of main channel using a numerical model in the tidally dominated Han River estuary (HRE), South Korea. The numerical model, EFDC (Environmental Fluid Dynamics Code), was simulated for 124 days, from May to August 2009, and used observed freshwater discharge for major rivers of HRE. The residual volume transport discharged into the HRE from the Yeomha channel and Seokmo channel had a ratio of 44:56 over thirty days under normal freshwater conditions. The model results show that a temporal variation of the ...

A New and Effective Transplanting Technique Using Wire Netting for Restoration of the Surfgrass, Phyllospadix japonicus, in Exposed Rocky Shores

ABSTRACT Park, J.-I.; Kim, j.-H.; Kim, J.H., and Shim, J.H., 2018. A New and Effective Transplanting Technique Using Wire Netting for Restoration of the Surfgrass, Phyllospadix japonicus, in Exposed Rocky Shores. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 326–330. Coconut Creek (Florida), ISSN 0749-0208. The surfgrass Phyllospadix japonicus is an abundant seagrass along the exposed rocky shores of the Korean peninsula. However, many surfgrass meadows on this area have been severely damaged by anthropogenic factors, leading to a growing interest on the restoration of surfgrass habitats. Few attempts have been made to develop transplanting techniques for surfgrass, owing to the low transplant survival in high-energy rocky shores. The present study evaluates the performance of a new transplantation method for P. japonicus based on affixing surfgrass transpla...

UAV monitoring of 3-year Foredune Partial Recovery from a Severe Winter: Truc Vert Beach, SW France

Guillot, B., Castelle, B., Marieu, V., Bujan, S., and Rosebery, D., 2018. UAV Monitoring of 3-year foredune partial recovery from a severe winter: Truc Vert beach, SW France. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 276–280. Coconut Creek (Florida), ISSN 0749-0208.The recent development of ultra-light civil UAVs and photogrammetric techniques provides new and efficient means to remotely sense the coastal topography at high spatial and temporal resolutions along spatially extensive areas. Truc Vert, SW France, is a high-energy meso-macrotidal beach backed by a preserved high and wide coastal dune system. This coastal dune system, which had been relatively stable over the last 70 years, was severely eroded during the winter of 2013/2014 with 800-m long and up to 8-m high cuspate erosion scarps. Since then, the foredune has been slowly recovering. This 3-year period was characterized, at the early stage, by the destabilisation of the scarped dune by trough blowouts, scarp slumping and filling and seasonal beach berm dynamics. The onset of foredune recovery occurred subsequently, and was characterized by the development of a dune ramp. This ramp provided efficient conduit for beach-dune delivery/exchange of sediment by the end of the study despite the high-energy winter of 2015/2016 drove localized dune erosion. The coastal dune did not fully recover with an approximately 60% average recovery within 3 years, an overall accretion due primarily to incipient foredune formation and foredune growth in height. The timing and magnitude of the incomplete recovery sequence from the UAV surveys provide an outstanding measure of coastal dune resilience to severe storms in this region of the world.

Generation of a New Tsunami Hazard Map for the Port of Imwon

Lee, S.-O.; Kim, W.-J., and Cho, Y.-S., 2018. Generation of a New Tsunami Hazard Map for the Port of Imwon. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 726–730. Coconut Creek (Florida), ISSN 0749-0208.Tsunamis, which are long-period oceanic waves mainly generated by undersea earthquakes, can be one of the most devastating types of natural hazard. Tsunamis frequently occur around the rim of the Pacific Ocean, including the East Sea. The most plausible and frequently chosen tsunami hazard mitigation measure is to generate a tsunami hazard map based on probable maximum tsunamis. Probable maximum tsunamis in the present study are three historical tsunamis and 11 virtual tsunamis. The port of Imwon, located on the eastern coast of the Korean Peninsula, is vulnerable to an unexpected tsunami strike. The Central East Sea Tsunami that struck in May 1983 resulted in three human casualties (one death and two people missing and presumed dead) and property damage. The present study generates a tsunami hazard map for the port of Imwon. Shelters and evacuation routes are determined according to selection criteria and a field survey. The newly developed tsunami hazard map can be used by local authorities in the case of a real tsunami.

On the Inverse Relationship between Concentration and Size of Cohesive Sediment

Son, M.; Bombardelli, F.A.; Park, B., and Byun, J., 2018. On the Inverse Relationship between Concentration and Size of Cohesive Sediment. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 56–70. Coconut Creek (Florida), ISSN 0749-0208.It is well accepted that the size of floc, the aggregate of cohesive sediment, increases through flocculation processes under high-mass-concentration conditions. However, field studies often show the inverse relationship between floc size and concentration. To examine the mechanism of such inverse relationship, numerical simulations using a robust 1DV model are carried out in this work. At relatively low elevations, the size of floc often has an inverse relationship with concentration under the hydrodynamic conditions of tidal flow and steady current. Nonetheless, the size of floc is proportional to concentration at high elevations. When the inverse relationship exists, the inversion of parameter representing the ratio between aggregation intensity and breakup intensity is found as the hydrodynamics becomes weak. From the findings, it is deduced that the floc size is affected by non-linear interactions between turbulence and concentration. None of them can be used to parameterize the tendency of size variation solely.

Experimental Test of 3kW Cylindrical Wave Energy System with Horizontal Rotation

Park, M.-S.; Jeong, Y.-J., and Kim, J., 2018. Experimental test of 3kW cylindrical wave energy system with horizontal rotation. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 1311–1315 Coconut Creek (Florida), ISSN 0749-0208.Since the potential of wave energy has been recognized for long and mostly associated with a nondestructive renewable energy, the wave energy has gained attention from many countries to find alternative and reliable energy sources. In the present study, 3kW cylindrical wave energy system with horizontal rotation is newly suggested. The suggested cylindrical wave energy system is composed of the horizontal cylinder, the swing plate and the yawing body. In order to verify the efficiency of cylindrical wave energy system, the experimental test is carried out using 3D wave basin for various parameters. The rotation speed of horizontal cylinder is strongly depended on the height of draft and the distance between the horizontal cylinder and the swing plate, and the period of swing plate is closely related to the period of incident wave. It is found that the suggested cylindrical wave energy system has more wave power available for a wide range of incident wave frequencies.

Development of a Novel Tool for the Monitoring of Shipping Traffic Within the Strait of Sicily (Central Mediterranean): the BIODIVALUE AIS Vessel Tracker

ABSTRACT Deidun, A.; Gauci, A.; Azzopardi, J.; Camilleri, C.; Cutajar, D.; Chalabreysse, M., and Trinquard, F., 2018. Development of a Novel Tool for the Monitoring of Shipping Traffic Within the Strait of Sicily (Central Mediterranean): the BIODIVALUE AIS Vessel Tracker. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 1356–1360. Coconut Creek (Florida), ISSN 0749-0208. The Straits of Sicily within the Central Mediterranean is one of the most intensely frequented areas within the Basin by shipping traffic. This makes the tracking of such traffic all the more instrumental in mitigating possible detrimental environmental impacts. Against this background, the BIODIVALUE (an EU-funded project) vessel traffic interface has been developed, which allows the user to define a number of preferences within queries submitted to the same interface, such as distance from th...