Wave Climate Assessment in the South Aegean Shelf

1997 ◽  
Author(s):  
Spiros Christopoulos ◽  
Christos Solomonidis
Keyword(s):  
Wave Climate ◽  
The South ◽  
Climate Assessment

scholarly journals Numerical Investigation of Hydrodynamics and Cohesive Sediment Transport in Cua Lo and Cua Hoi Estuaries, Vietnam

2021 ◽  
Vol 9 (11) ◽  
pp. 1258
Author(s):  
Viet Thanh Nguyen ◽  
Minh Tuan Vu ◽  
Chi Zhang
Keyword(s):  
Sediment Transport ◽  
Great Influence ◽  
Wave Model ◽  
Sediment Concentration ◽  
Wave Climate ◽  
Cohesive Sediment ◽  
Wave Direction ◽  
The South ◽  
The North ◽  
Cohesive Sediment Transport

Two-dimensional models of large spatial domain including Cua Lo and Cua Hoi estuaries in Nghe An province, Vietnam, were established, calibrated, and verified with the observed data of tidal level, wave height, wave period, wave direction, and suspended sediment concentration. The model was then applied to investigate the hydrodynamics, cohesive sediment transport, and the morphodynamics feedbacks between two estuaries. Results reveal opposite patterns of nearshore currents affected by monsoons, which flow from the north to the south during the northeast (NE) monsoon and from the south to the north during the southeast (SE) monsoon. The spectral wave model results indicate that wave climate is the main control of the sediment transport in the study area. In the NE monsoon, sediment from Cua Lo port transported to the south generates the sand bar in the northern bank of the Cua Hoi estuary, while sediment from Cua Hoi cannot be carried to the Cua Lo estuary due to the presence of Hon Ngu Island and Lan Chau headland. As a result, the longshore sediment transport from the Cua Hoi estuary to the Cua Lo estuary is reduced and interrupted. The growth and degradation of the sand bars at the Cua Hoi estuary have a great influence on the stability of the navigation channel to Ben Thuy port as well as flood drainage of Lam River.

scholarly journals Trend analysis of wave storminess: wave direction and its impact on harbour agitation

2010 ◽  
Vol 10 (11) ◽  
pp. 2327-2340 ◽  
Author(s):  
M. Casas-Prat ◽  
J. P. Sierra
Keyword(s):  
Energy Content ◽  
Temporal Trends ◽  
Wave Climate ◽  
Maximum Energy ◽  
Wave Direction ◽  
The South ◽  
Wave Hindcast ◽  
Catalan Coast ◽  
Northwestern Mediterranean Sea

Abstract. In the context of wave climate variability, long-term alterations in the wave storminess pattern of the Catalan coast (northwestern Mediterranean Sea) are analysed in terms of wave energy content and wave direction, on the basis of wave hindcast data (from 44-year time series). In general, no significant temporal trends are found for annual mean and maximum energy. However, the same analysis carried out separately for different wave directions reveals a remarkable increase in the storm energy of events from the south, which is partly due to a rise in the annual percentage of such storms. A case study of Tarragona Port (on the southern Catalan coast) highlights the importance of including changes in wave direction in the study of potential impacts of climate change. In particular, an increase in the frequency of storms from the south leads to greater agitation inside the Port.

scholarly journals An assessment of wind and wave climate as potential sources of renewable energy in the nearshore Shenzhen coastal zone of the South China Sea

Energy ◽  
2017 ◽  
Vol 134 ◽  
pp. 789-801 ◽  
Author(s):  
Xinping Chen ◽  
Kaimin Wang ◽  
Zenghai Zhang ◽  
Yindong Zeng ◽  
Yao Zhang ◽  
...  
Keyword(s):  
Renewable Energy ◽  
South China Sea ◽  
Coastal Zone ◽  
South China ◽  
Wave Climate ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Potential Sources

The imprint of the ENSO activities on the South China Sea wave climate

2020 ◽  
Vol 70 (10) ◽  
pp. 1315-1323
Author(s):  
Xuechao Wang ◽  
Qin-Yan Liu ◽  
Dandan Sui ◽  
Dongxiao Wang
Keyword(s):  
South China Sea ◽  
South China ◽  
Wave Climate ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Sea Wave

Wave climate simulation for southern region of the South China Sea

2013 ◽  
Vol 63 (8) ◽  
pp. 961-977 ◽  
Author(s):  
Ali Mirzaei ◽  
Fredolin Tangang ◽  
Liew Juneng ◽  
Muzneena Ahmad Mustapha ◽  
Mohd Lokman Husain ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Wave Climate ◽  
The South China Sea ◽  
Southern Region ◽  
Climate Simulation ◽  
The South ◽  
China Sea

Evaluation of the Seasonal Pattern of Wind-Driven Waves on the South-Southeastern Brazilian Shelf

2017 ◽  
Vol 370 ◽  
pp. 141-151 ◽  
Author(s):  
Phelype Haron Oleinik ◽  
Wiliam Correa Marques ◽  
Eduardo de Paula Kirinus
Keyword(s):  
Seasonal Pattern ◽  
Renewable Energy Sources ◽  
Wave Climate ◽  
Energy Sources ◽  
Wave Power ◽  
Energy Availability ◽  
The South ◽  
Sea State ◽  
The Cost ◽  
Autumn And Winter

The focus on renewable energy sources on the last few decades has pushed studies on wave energy availability. In this sense, this study aims to determine annual characteristics of the wave climate on the South-Southeastern Brazilian Shelf (SSBS) to improve the comprehension of the Brazilian wave climate, as well as, to give an insight on the more energetic coastal spots in this area. To accomplish that, the sea state model TOMAWAC was used to simulate 18 years of wave conditions on the SSBS which were later converted to a single year, representative of the Brazilian wave climate. The results showed a strong annual pattern of steadier sea state in summer and spring and a more agitated one in autumn and winter. The results also showed that in the Santa Marta cape, the seasonal wave power oscillates between 8 and 11 kW/m, and at Ilhabela, between 7 and 11 kW/m. At the Farol island, on the other hand, the seasonal wave power varies around 11 and 19 kW/m, yielding much more energy but, at the cost of an extremely higher variation throughout the year.

Estimate of the Wave Climate on the Most Energetic Locations of the South-Southeastern Brazilian Shelf

2017 ◽  
Vol 370 ◽  
pp. 130-140 ◽  
Author(s):  
Phelype Haron Oleinik ◽  
Wiliam Correa Marques ◽  
Eduardo de Paula Kirinus
Keyword(s):  
Wavelet Analysis ◽  
Wave Height ◽  
Wave Climate ◽  
The Other ◽  
The South ◽  
Sea State ◽  
Annual Behavior ◽  
Power Yield ◽  
The Mean ◽  
The One

The wave energy availability has become a field of intensive research around the world. In this sense, this study aims to estimate the wave climate at the most energetic spots on the South-Southeastern Brazilian Shelf (SSBS). To achieve this goal, the sea state model TOMAWAC was used to simulate 18 years of wave conditions on the SSBS. The results showed that the sites at Santa Marta cape and Ilhabela are quite similar, with mean wave height of 1.4 m and period of 8.5 s along the climatological year. Farol island, on the other hand, showed higher averages, of 1.7 m and 8.9 s for wave height and period, respectively. The annual behavior of the wave parameters showed greater stability at Santa Marta cape and Ilhabela, and less at Farol island. The mean wave power yield at the Santa Marta cape and Ilhabela is nearly 10 kW/m and at Farol island, 15 kW/m. A wavelet analysis pointed that the most energetic events are those with periods of occurrence from 6 to 12 days, with the apex at 7 days. The wavelet analysis also showed that the most energetic spectrum is the one at Farol island, with 2.5 times the energy of the other locations at the period band of 7 days.

A database of Black Sea beaches

2020 ◽  
Author(s):  
Tahsin Görmüş ◽  
Berna Ayat ◽  
Burak Aydoğan
Keyword(s):  
Black Sea ◽  
Satellite Images ◽  
Wave Climate ◽  
Marine Conservation ◽  
Coastal Hazards ◽  
The Black Sea ◽  
The South ◽  
Maximum Width ◽  
Average Width ◽  
The Mean

<p>Beaches are not only one of the most beautiful natural entities the world coasts, they are also habitat for various species of living creatures, barrier against coastal hazards. Their conservation is crucially important, yet the efforts seem deficient. Geographic information systems are great tools towards this aim by incorporating coastal data and visually representing them. In this study, a database for all the beaches along the Black Sea coastline is created to help the efforts on marine conservation and coastal management. 1553 beaches have been digitized as polygons using satellite images between 2013 and 2016 covering the entire Black Sea coast. Geometric properties such as area, perimeter, width, central coordinates, UTM zone, shoreline length, and bound orientation are obtained through different data collection techniques. Information related to natural properties such as estuaries, coastal structures, and settlement densities have been gathered. Results indicated that Black Sea beaches are relatively narrow. Most of them are either experienced erosion or have a vulnerability to erosion. Among all 1553 beaches, only 28 beaches have an average width wider than 100 m. In the basin, the average width of the beaches is 26.04 m, the average beach area is 70384.2 m<sup>2</sup> and the total beach shoreline length is 2116.12 km, which covers 43% of the Black Sea coastline. The mean slope values of the beaches with a maximum width of greater than 100 m are calculated using ASTER Digital Elevation Model v2. According to this analysis, the mean slope of these 164 beaches is 7.28 degrees. An additional analysis is performed by creating a different layer for the South-western part of the basin, from approximately 5 years older satellite images. This analysis showed that, even in the short-term, beaches can experience significant area loss reaching up to 50% in a relatively high wave climate such as exists in the South-western part.</p>

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