Journal of Coastal Research最新文献

{"title":"Impact of storms along the coastline of Emilia-Romagna: the morphological signature on the Ravenna coastline (Italy)","authors":"P. Ciavola, C. Armaroli, J. Chiggiato, A. Valentini, M. Deserti, L. Perini, P. Luciani","doi":"10.2112/jcr-si50-103.1","DOIUrl":"https://doi.org/10.2112/jcr-si50-103.1","url":null,"abstract":"P. CIAVOLA, C. ARMAROLI, J. CHIGGIATO, A. VALENTINI, M. DESERTI, L. PERINI and P. LUCIANI, 2007. Impact of storms along the coastline of Emilia-Romagna: the morphological signature on the Ravenna coastline (Italy). Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), pg – pg. Gold Coast, Australia, ISBN) The coastal zone of the Emilia-Romagna region is exposed to risk from coastal flooding during storms. The vulnerability of this coastline is a topic of interest for future coastal planning as this area provides large revenue for coastal communities and the whole region. An assessment of the historical record of storm events for the period 2000-2004 was carried out using a wave generation model, fed by archived atmospheric circulation data. High-resolution air-borne laser detection technology (LIDAR) and video-monitoring (ARGUS) have permitted to undertake a feasibility study for the assessment of coastal erosion and flooding patterns along one of the bestpreserved dune systems of the area. The source of the work was the comparison between two LIDAR flights at an interval of one year (July 2003-September 2004) with the second flight carried out after a major storm occurred in September 2004, with a return period of 25-years. Following this exceptional event the whole coastal system resulted to be in a state of weakness. The study presented in this paper suggests that for the coast of the Emilia-Romagna region the critical factor that controls dune destruction and inland flooding is the joint occurrence of storm waves and surges. Beach slope is the main morphological control on wave run-up and the impact evaluation for the exceptional event has proved that a wide beach can be considered a symptom of safety. A small beach replenishment was undertaken on the test site but this resulted to be ineffective because of the small volume.","PeriodicalId":51078,"journal":{"name":"Journal of Coastal Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140368235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Coupled Model for an Offshore Pile, Seabed and Seawater Interaction","authors":"Jian-Fei Lu, D. Jeng","doi":"10.2112/jcr-si50-076.1","DOIUrl":"https://doi.org/10.2112/jcr-si50-076.1","url":null,"abstract":"LU, J.-F. AND JENG, D.-S., 2007. A coupled model for an offshore pile, seabed and seawater interaction. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 389 – 393. Gold Coast, Australia, ISSN 0749.0208 A coupled model is developed to investigate the dynamic interaction between an offshore pile, poroelastic seabed and sea water. The pile and the seabed are treated as saturated porous media described by Biot’s dynamic theory. The sea water is regarded as an acoustic medium which is characterised by the Helmholtz equation. Three boundary element formulations are constructed for the pile, the seabed and the sea water, respectively. The three boundary element method formulations and the continuity conditions (stress and displacement) between the pile, the seabed and the sea water are used to formulate the coupled model for the system. Airy linear wave theory is used to evaluate the external force applied on the pile and the seabed due to the incident and the scattered water waves. The dynamic response of the system is calculated by the coupled boundary element method formulation. A numerical example is used to demonstrate the capacity of the coupled model.","PeriodicalId":51078,"journal":{"name":"Journal of Coastal Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140368676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical Study on the Coastal Upwelling and Its Seasonal Variation in the East China Sea","authors":"Z. Jing, Z. Hua, Yq Qi, Xh Cheng","doi":"10.2112/jcr-si50-106.1","DOIUrl":"https://doi.org/10.2112/jcr-si50-106.1","url":null,"abstract":"The upwelling structure and its seasonal variation along Zhejiang and Fujian coast of the East China Sea are studied using a three-dimensional baroclinic nonlinear numerical model forced by QuikSCAT winds over 20002004, in which other important factors such as realistic topography, boundary currents (Taiwan Warm Current, Kuroshio and Changjiang Discharge) and heat flux are all included. Numerical model results indicate that there exist obvious upwellings in the coastal area along Zhejiang and Fujian coast during every season and their intensity and spatial distribution have distinct seasonal variability. The stronger upwelling centres are mostly located in the vicinity of Zhoushan Islands and Yushan Archipelago of Zhejiang coast, Haitan Island and Mazu Archipelago of Fujian coast. In addition, the mean upwelling velocity is about 0.3 x 10(-3) cm/s and the magnitude of upwelling intensity is 10(-3) cm/s in winter, while in summer they are about 0.3 x 10(-2) cm/s and 10(-2) cm/s, respectively. The modelling results also show that the change rate of upwelling intensity is less in wintertime with the weaker coastal upwelling but quite to the contrary in summertime.","PeriodicalId":51078,"journal":{"name":"Journal of Coastal Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reactivation of Coastal Dunes Documented by Subsurface Imaging of the Great Dune Ridge, Lithuania","authors":"I. Buynevich, A. Bitinas, D. Pupienis","doi":"10.2112/jcr-si50-044.1","DOIUrl":"https://doi.org/10.2112/jcr-si50-044.1","url":null,"abstract":"BUYNEVICH, I., BITINAS, A. and PUPIENIS, D., 2007. Reactivation of coastal dunes documented by subsurface imaging of the Great Dune Ridge, Lithuania. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 226 – 230. Gold Coast, Australia, ISSN 0749.0208 Large coastal and inland dunefields often consist of multiple generations defined by periods of stability and reactivation. Where earlier phases of aeolian activity are masked by subsequent deposition, continuous highresolution geophysical images help to reconstruct the history of landscape change. Ground-penetrating radar (GPR) profiles from relict Holocene dunes on the northern Curonian Spit, Lithuania reveal distinct contacts between older deposits (barrier-spit facies, older aeolian strata, paleosols) and overlying dune sands. Early stages of dune migration began prior to 6,000 years B.P. followed by several periods of stabilisation and subsequent reactivation. Parabolic and transverse dunes, some attaining heights of 40-60 m, have migrated to the east in response to westerly winds from the Baltic Sea. In several places, similar to a number of sites in Northern Europe, the upper sections of large dunes have been deflated leaving near-horizontal exposures where subsurface imaging extends the continuity of key stratigraphic horizons. Within dune sequences, oblique lateral accretion surfaces indicate the direction of earlier migration phases and exhibit distinct meso-scale geometries. In GPR images and shallow trenches, buried slipfaces have dip angles varying from 10-15o to 31-34o, the latter being similar to the angle of repose maintained by modern unvegetated dunes. A series of cores taken through sequences of stacked buried slipfaces show little visible variation in sediment properties with depth, suggesting that minor changes in texture, mineralogy and grain packing may be responsible for individual reflections in geophysical records. Occasionally, laterally extensive horizons enriched in heavy minerals produce prominent subsurface reflections and are indicative of periods of increased wind activity.","PeriodicalId":51078,"journal":{"name":"Journal of Coastal Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Waves and Climate Change on the Australian Coast","authors":"M. Hemer, J. Hunter","doi":"10.2112/jcr-si50-083.1","DOIUrl":"https://doi.org/10.2112/jcr-si50-083.1","url":null,"abstract":"HEMER, M.A.; CHURCH, J.A. and HUNTER, J.R., 2007. Waves and climate change on the Australian coast, SI 50 (Proceedings of the 9th International Coastal Symposium), 432 – 437. Gold Coast, Australia, ISSN 0749.0208. There is a need to plan for the impacts of coastal erosion in response to climate change Australia-wide. A deepwater wave climatology of the Australian region is determined, which is required as boundary conditions for coastal wave models. Available wave data for the Australian region has been analysed to determine the mean climatology and interannual variability of mean significant wave height. Available data includes global wave model output from the ECMWF 45-yr re-analysis, ERA-40; corrected ERA-40 wave heights and the NOAA WaveWatch III operational wave model; satellite altimetry measurements; and data from a network of 30 waverider buoys surrounding the Australian coast located on the inner-mid continental shelf and some short-term deep-water wave-rider buoy deployments. These data have been analysed to determine the long-term mean, annual cycle and interannual variability of the mean Australian wave climate. Correlation with a number of climate indices in the Australian region indicate that southern ocean wind anomalies are a dominant mechanism responsible for variability of wave climate in the region. Correlation between monthly mean significant wave heights and the Southern Oscillation Index is significant along Australia’s eastern margin. ADDITIONAL INDEX WORDS: Climatology, waves, Australia","PeriodicalId":51078,"journal":{"name":"Journal of Coastal Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sandy Beach Profile Response to Sloping Seawalls: An Experimental Study","authors":"Jinhai Zheng, D. Jeng, H. Mase","doi":"10.2112/jcr-si50-065.1","DOIUrl":"https://doi.org/10.2112/jcr-si50-065.1","url":null,"abstract":"ZHENG, J.-H., JENG, D.-S. and MASE, H., 2007. Sandy beach profile response to sloping seawalls: an experimental study. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 334 – 337. Gold Coast, Australia, ISSN 0749.0208. Seawalls are commonly used as a tool for coastal defence worldwide. Most previous studies have considered the case of vertical seawalls and descriptions of existing seawalls, rather than the influence of different designs of sloping seawalls on beach erosion. In this study, laboratory investigations of an undistorted moveable bed model were conducted to determine the resulting beach profile of artificial sandy beaches. In the experiments, three different sloping seawalls were considered under erosive wave conditions with a 50-year return period. The coast of Northern Jiangsu Province, China, is used as a case study. To simulate natural conditions, similarity criteria are developed assuming that the energy dissipation per unit volume along the beach profile is uniform and that the wave properties can be properly scaled by Froude criteria. Field surveys of beach profile changes due to the storm surge induced by Typhoon 9711 were taken to validate the experimental model and good agreements were attained. Spatial profile configurations were studied by examining dominant profile features such as the break point bar and the scour trough on the seawall-backed profiles. Experimental results provided a reference for the maintenance of artificial sandy beaches and the design of seawalls on the coast of Northern Jiangsu Province, China.","PeriodicalId":51078,"journal":{"name":"Journal of Coastal Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quality Assessment of the Armourstones for Some Black Sea Rubble Mound Breakwaters, Turkey","authors":"U. A. Ozden, T. Topal","doi":"10.2112/jcr-si50-037.1","DOIUrl":"https://doi.org/10.2112/jcr-si50-037.1","url":null,"abstract":"ABSTRACT O ZDEN , U.A. and T OPAL , T., 2007. Quality assessment of the armourstones for some Black Sea rubble mound breakwaters, Turkey. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 190 – 194. Gold Coast, Australia, ISSN 0749.0208 The Black Sea coastline is a hazardous region in Turkey, especially in winter, due to the dominant wave action. Therefore, rubble mound breakwaters used as ship shelters are vital structures, especially for the fishermen. Construction of the breakwater requires good quality, durable armourstones. Due to the nature of the rubble mound breakwaters, armourstones of various sizes and types are used in the construction of these structures. The deterioration of these armourstones with time may result in the failure of the breakwater. In this study, the quality and durability of the armourstones (mainly limestone, andesite and sandstone) used or to be used in three rubble mound breakwaters are investigated through field and laboratory studies. Among the studied armourstones, the three limestones are found to be good in long-term quality and durability. However, the sandstone displays poor performance, whereas the andesite is marginal. Both static durability index and CIRIA/CUR evaluation successfully predict the long-term durability of the armourstones.","PeriodicalId":51078,"journal":{"name":"Journal of Coastal Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anthropogenic Geomorphological Changes during the Last Century in the Kangneung Area along the East Coast of Korea","authors":"K.H. Choi, K.S. Yoon, J.H. Choi, Y.K. Shin, J.C. Lee, M.H. Suh, K. Munyikwa, K.H. Oh","doi":"10.2112/jcr-si50-184.1","DOIUrl":"https://doi.org/10.2112/jcr-si50-184.1","url":null,"abstract":"","PeriodicalId":51078,"journal":{"name":"Journal of Coastal Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Assessment of the Coastal Zone Development at a Regional Level – the Case study of Portugal Central Area","authors":"F. L. Alves, C. P. da Silva, P. Pinto","doi":"10.2112/jcr-si50-015.1","DOIUrl":"https://doi.org/10.2112/jcr-si50-015.1","url":null,"abstract":"ALVES, F. L., SILVA, C. P. and PINTO, P., 2007. The Assessment of Coastal Zone Development at a Regional Level – the case study of the Portuguese Central Area. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 72 – 76. Gold Coast, Australia, ISSN 0749.0208 The Portuguese mainland coast is entirely covered by Coastal Zone Management Plans (CZMP). Those plans show that there are great opportunities and strategic values at the Portuguese Coast from the socio-economic and environmental point of view. Therefore, the coast is also under a huge pressure, as result of a fast growing development intensified since the mid 50’s of the 20th century. This situation can be exemplified at the Central Portugal Coastal Zone, classified as a highly vulnerable area to coastal erosion, with a strong demographic pressure and human activities associated. This trend does not show any marks of slowing down, increasing the level of vulnerability for coastal population and settlements. As also the risk, reinforced by sea level rise due to climate change. The methodology used for the assessment of this development was based on a large set of thematic indicators: environment, socioeconomic and governance. The results identify problematic areas and the priority actions to be taken by the central administration towards the application of Sustainable Development principles. This paper also points out the importance of the establishment of a National Coastal Observatory, for assessing and monitoring the development of the Portuguese Coastal Zone at a regional level. In addition is also enhanced the importance of these regional structures to the national Decision Support System (DSS). ADDITIONAL INDEX WORDS: decision support system, regional observatory, SDA Model","PeriodicalId":51078,"journal":{"name":"Journal of Coastal Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sediment Storage in the Northern Adriatic Ebb-Tidal Deltas, Italy: Sand Use Potential and GIS Database","authors":"G. Fontolan, S. Pillon, F. D. Quadri, A. Bezzi","doi":"10.2112/jcr-si50-169.1","DOIUrl":"https://doi.org/10.2112/jcr-si50-169.1","url":null,"abstract":"","PeriodicalId":51078,"journal":{"name":"Journal of Coastal Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}