Adem Akpinar

Adem Akpinar
Uludag University · Department of Civil Engineering

PhD

About

104
Publications
40,573
Reads
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1,292
Citations
Additional affiliations
July 2014 - January 2020
Uludag University
Position
  • Professor (Associate)
October 2013 - July 2014
Uludag University
Position
  • Professor (Assistant)
February 2013 - October 2013
Ardahan Üniversitesi
Position
  • Professor (Assistant)
Education
February 2007 - February 2012
Karadeniz Technical University
Field of study
  • Hydraulic and Water Resources (Ocean Engineering)
September 2004 - February 2007
Karadeniz Technical University
Field of study
  • Hydraulic and Water Resources (Hydropower energy)

Publications

Publications (104)
Article
The quality of the third generation wave model WAVEWATCH III, referred WW3, using the different source term packages is investigated in the context of wave growth and dissipation in a semi-closed sea, Black Sea. Accuracy in wave height hindcast is tested for five different source term parameterizations ST1, ST2, ST3, ST4, and ST6 in WW3 against the...
Article
This study evaluates the performance of a dynamic ensemble of wave climate simulations for the Black Sea. The ensemble members (and ensemble means) are evaluated for the historical period (1979‐2005). The spectral wave model SWAN was forced with eight Coupled Model Intercomparison Project Phase 5 (CMIP5) based Regional Climate Models (RCMs) wind fi...
Article
Full-text available
This study presents a detailed analysis of changes in wind and wave climate in the Western Mediterranean Sea (WMed), based on 41 years of accurate wind and wave hindcasts. The purpose of this research is to assess the magnitude of recent changes in wave climate and to locate the coastal areas most affected by these changes. Starting from the Theil-...
Article
This study investigates the spatio-temporal changes in the downstream river bed during a dam construction on the Büyükkumla river channel in Bursa’s Gemlik district in Turkey. To achieve this goal, an evaluation of the seasonal and annual effectiveness of dam construction activities in the study area, identifying geomorphological effects during dam...
Research Proposal
Full-text available
https://www.mdpi.com/journal/sustainability/special_issues/Wave_Energy_Resources
Article
The rising intensity and recurrence of wave storm events can seriously impact navigation and coastal and offshore structures in the Western Mediterranean Sea. Therefore, the present study is focused on wave storm events in the Western Mediterranean Sea, over the last four decades. The spatial decadal variations of wave storm events are shown, consi...
Article
This study presents the first spatial calibration of SWAN model physical parameters based on satellite observations for the Black and Azov Seas. Currently, the wind-wave model performance is unknown in several coastal and offshore areas due to the gap in wave buoy measurements. The development and increase of altimetry satellites allow collecting a...
Article
This study aims to describe how the construction process of a reservoir dam affects and changes in river morphology such as cross-section changes and total sediment movement in different annual and seasonal scales. Cross-sectional and profile changes, and spatial distribution of differences (degradation and aggradation areas) between topographic me...
Research Proposal
Our main goal is to bring together original research papers, perspectives, and reviews and create a multidisciplinary forum of discussions on the most recent advances / identification in offshore wind and wave energy, energy generation by wave energy converters (WECs), optimization of the WECs, geo-spatial multi criteria evaluation for installation...
Preprint
Full-text available
This study presents a detailed analysis of changes in wind and wave climate in the Western Mediterranean Sea (WMed), based on 41 years of accurate wind and wave hindcasts. The purpose of this research is to assess the magnitude of recent changes in wave climate and to locate the coastal areas most affected by these changes. Starting from the Theil-...
Article
As wave energy converters (WECs) are typically designed and optimized for ocean wave conditions, they struggle to perform in low-energy seas or bays, where wave conditions are very different. This work investigates the hypothesis that downscaled versions of WECs may well be more suited for such conditions. More specifically, fifteen downscaled WECs...
Article
The paper focuses on the performance and determination of optimal installation depths of wave energy converter systems (WECs) in less intensified wave energy locations. Therefore, the study aims to investigate the changes in wave power production performance of different WECs along the coastline of the southwestern parts of the Black Sea, a semi-en...
Article
This study aims to investigate the quality of ERA5, a recent reanalysis wind product, and its contribution to wave modelling performance in a semi-closed sea, the Black Sea. This investigation includes a comparison of ERA5 surface wind fields with the ones from the CFSR to assess if this latest reanalysis improved the representation of the surface...
Article
This study aims to determine long-term spatial variability of wind and wave characteristics over the Sea of Marmara. For this purpose, we produced four different wind and wave datasets for a period of 40 years (1979-2018) using the calibrated and default-setting SWAN models forced with both CFSR and ERA-Interim winds and inter-compared. The perform...
Article
This study focuses on the inter- and intra-annual variation in theoretical wave power along the south-western coast of the Black Sea. Long-term (1979-2009) hindcast developed using the calibrated three-layer nested SWAN model was used for a detailed assessment of wave energy resource. Annual change, monthly and seasonal wave power variability indic...
Article
Full-text available
Annual trends in storm wave intensity over the past 41 years were evaluated during the present study. Storm wave intensity is evaluated in terms of total storm wave energy (TSWE) and storm power index (SPI) of Dolan and Davis (1992). Using an accurate long-term wave hindcast developed using a calibrated SWAN model, all storm wave events occurring o...
Article
The present study aims to determine priority areas for installation of wave energy converters (WECs) in a semi-enclosed sea using a multi-criteria, spatial, decision-making analysis based on geographical information systems (GIS). The study also suggests a new methodology for determination of suitable areas for WECs taking into consideration differ...
Conference Paper
Full-text available
The activities proposed in the present Short Term Scientific Mission (STSM) are focused on the Black Sea environment, being related to the WG1 (Wave Energy Resources). According to the recent studies, was highlighted the fact that the western part of this basin is defined by more consistent wave resources, that are expected to increase in the near...
Conference Paper
Full-text available
This study concentrates on the changes of theoretical wave power from offshore to coastal regions of southwestern Black Sea. The investigation also offers a long-term (31-year) wave power quantification analysis between 1979 and 2009 using the SWAN version 41.01AB numerical wave model. The wave resource assessment is performed in terms of its seaso...
Article
Knowledge of coastal storm regimes is essential to ensure an economic and sustainable development in the coastal area. In recent decades, wave storms have been responsible for several fatalities and economic losses along the Algiers coast. The aim of this paper is to present a detailed analysis on wave storm events during the past 40 years, includi...
Conference Paper
Full-text available
The main objective of this study is to identify and compare wave power sources in the high potential areas in nearshore and shallow water regions of the Black Sea. To achieve the goal, 23 locations were selected on two parallel lines around 5 m (10 sites) and around 25 m (13 sites) depth along the shoreline. The data needed to do the required analy...
Article
Full-text available
This study aims to investigate the amount of energy (economic wave energy potential) that can be obtained from the existing wave energy converters in the high wave energy potential region of the Black Sea in terms of wave energy potential and their performance at different depths in the region. The data needed for this purpose were obtained using t...
Article
This study investigated whether a new re-analysis of ECMWF contributes to wave hindcast performance in the Black Sea. For this purpose, ERA5 and ERA-Interim winds presented by ECMWF were downloaded in order to have an inter-comparison of ECMWF datasets. For performance evaluation of wave hindcasts, third generation wave hindcast model SWAN was run...
Conference Paper
This study aims to investigate the spatial variation of morphological changes along the stream bed due to activities curried out during Büyükkumla dam construction, located within the borders of Gemlik District of Bursa Province. The study area stretches over a distance of 2313 meters, from the spillway discharge channel of the dam, downstream to t...
Article
This study aims at the assessment of wave energy potential and its spatial and temporal variability along the south-west coasts in the hot-spot areas of Black Sea. For this purpose, third-generation numerical wave hindcast model Simulating WAve Nearshore (SWAN), which is based on a set of nested SWAN model with increasing spatial resolutions (a coa...
Article
This study investigates a long-term assessment of the wave energy resource propagated along the Algerian basin, based on a 39-year wave hindcast. The wave energy hindcast dataset was developed using the Simulating WAve Nearshore (SWAN) model, calibrated and validated [1] against wave measurements performed on the Algerian coast. A detailed spatial...
Article
Full-text available
The main objective of this study is to identify and compare wave power sources in the high potential areas in nearshore and shallow water regions of the Black Sea. To achieve the goal, 23 locations were selected on two parallel lines around 5 m (10 sites) and around 25 m (13 sites) depth along the shoreline. The data needed to do the required analy...
Cover Page
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% In the memory of Gerbrant Van Vledder (July 28, 1957 – November 22, 2019) It was ages ago. A wise hand reached out to me for assistance when I could not figure out a solution to a problem during my PhD years, and I had shared it on an academic platform - an encounter that would lead to years of joint studies bec...
Conference Paper
Full-text available
To meet the growing electricity demand in Turkey, the need for clean, indigenous, low-cost and renewable energy sources is increasing. Wave energy, which has been intensively studied on determination of its potential recently, is a new energy source with many advantages compared to fossil energy sources as in other renewable energy sources. There a...
Article
This study determines the qualities of atmospheric wind field data in comparison with wind measurements at five locations along the Black Sea coast. For this purpose, four different wind fields were obtained from three different weather centres (NCEP, NASA, and ECMWF). Three of these are reanalyses winds (Climate Forecast System Reanalysis CFSR, Mo...
Article
This paper aims to examine the temporal variation of wave energy flux in the hotspot areas of the Black Sea. For this purpose, a 31-year long-term wave dataset produced by using a three-layered nested modelling system was used. Temporal variations of wave energy were determined at hourly, monthly, seasonal, and yearly basis at seventeen stations. B...
Article
This study aims to present an evaluation and implementation of a high-resolution SWAN wind wave hindcast model forced by the CFSR wind fields in the west Mediterranean basin, taking into account the recent developments in wave modelling as the new source terms package ST6. For this purpose, the SWAN model was calibrated based on one-year wave obser...
Article
This study presents the south-west Black Sea wave climatology based on a downscaling approach of a long-term 31-year SWAN model wave hindcast using telescoping nested grids. At all domains the SWAN model is forced with the CFSR winds. Sensitivity tests are conducted on domain size, computational resolutions, the physical formulations and their adju...
Conference Paper
This study aims to discuss the performances of wind speed data of ERA-20C, ERA-20CM and CERA-20C climatic models produced by the ECMWF and the performances of the significant wave heights and average wave periods as a result of the wave prediction modeling by using these wind data on the Black Sea. For this purpose, the performances of the wave dat...
Conference Paper
In this study, the performance of the measurements collected by HF (High Frequency) sea radar, which was established by the Turkish State Meteorological Service at the Black Sea exit of the Bosphorus, and the results obtained with the SWAN numerical model were evaluated. Wave data accumulated by sea radar and SWAN model results developed by Akpınar...
Conference Paper
A long-term wave energy atlas is produced for the southwestern coast of the Black Sea by conducting a 31-year long-term wave prediction. This atlas is then made available to users on the web. The data needed is generated using a calibrated nested wave prediction model SWAN (Akpınar et al. 2016; Bingölbali et al. 2018), forced with CFSR winds for th...
Conference Paper
This study aims to analyze the spatial changes of maximum values of long term predicted significant wave heights on the Sea of Marmara. For this purpose, required data is obtained by using calibrated wave prediction model SWAN forced with CFSR winds for the years between 1979 and 2009 (Kutupoğlu et al., 2016; Kutupoğlu, 2017; Kutupoğlu et al., 2018...
Article
A high-resolution SWAN wind wave hindcast model was implemented for the Sea of Marmara. For this, we focused firstly on the quality of two data sources for the wind forcing, viz., the ERA-Interim winds from the ECMWF and CFSR winds from the NOAA/NCEP. These were compared against wind measurements for 2013 collected at the Silivri offshore buoy in t...
Conference Paper
In extreme weather conditions, for instance storms, wind waves at sea can have an impact on coastal structures. Whether this effect is destructive depends on the design of the structure. If conditions exceed the design criteria, the risk of damage to the structure increases. A number of fishing ports located on the shores of the Marmara Sea (Armutl...
Conference Paper
This study aims to analyze mean yearly variations of spatial distributions of significant wave height (Hm0) and wind speed (WS) over the Sea of Marmara. For this purpose, the data needed was produced from the calibrated SWAN model (Kutupoğlu et al. 2016; Kutupoğlu, 2017) forced with the CFSR winds during 1979 – 2009. Wind and wave information were...
Conference Paper
This study focusses on understanding contribution of swells to wave climate along with the south western coast of the Black Sea. For this, the simulated data from the nested SWAN model [1] at six locations off the south western coasts of the Black Sea for the period from 1979 to 2009 was used. To understand the dominant wave pattern in the study ar...
Conference Paper
Extreme wave conditions on the oceans and seas affect both transportation and offshore or coastal structures. Recently, several researches and national sources have shown that some sea storms with destructive effects have been observed in the Black Sea. These storms could have a negative impact on increasing coastal use in recent years and also cau...
Article
Full-text available
The swell climate of the Black Sea has been determined using a long-term 31-year wave hindcast with the third-generation spectral wave model SWAN in combination with spectral partitioning. This technique enables decomposing wave spectra into individual wave systems representing wind seas or swells and computing integral wave parameters of each part...
Conference Paper
Being one of the renewable energy resources, wave energy has high potential and low negative impact on the environment, especially in coastal regions. For the selection of an appropriate location for wave energy exploitation, wave energy potential is computed based on the wave characteristics. Due to lack of, or inadequate measurements of such data...
Conference Paper
This study aims to investigate the status of existing coastal structures along the coastline of about 115 km along the Bursa Coast of Marmara Sea. It plans to investigate if there exist any problems associated with the structures, presenting those problems, and possible solutions to solve them. Within this goal, existing coastal structures and usag...
Conference Paper
Being a country surrounded by seas, Turkey has long shorelines experiencing excessive coastal and marine activities. In the planning and design of coastal and offshore structures, as well as other marine activities, accurate information on wind and wave conditions is needed. Unfortunately for Turkey, there are no real-time wave monitoring stations...
Article
This study analyzes the wave energy potential in the Black Sea based on long-term model simulations. A dataset covering the period of 1979–2009 is produced using a calibrated numerical wave prediction model (SWAN). This dataset was analyzed in detail to determine the wave energy potential to enable a reliable and optimal design of wave energy conve...
Article
The objective of this study is to use numerical wave models to predict the extreme storm conditions in the Black Sea. In the past and recent years, two historical storms (February 1979 and February 6-8, 2012) that caused significant damages along the Bulgarian coast and a historical storm (February 2003) affecting the eastern part of the Black Sea...
Conference Paper
Full-text available
INTRODUCTION Wave energy is a resource which has the highest marine energy density available in coastal areas. Also, worldwide it is considered as an attractive alternative source of renewable energy, both from reducing CO2 emissions as well as from independence of external sources. Therefore, assessment of its potential in sea areas is considered...
Conference Paper
Full-text available
INTRODUCTION Characteristics of wind occupy an important place in offshore and coastal engineering activities because they primarily affect the accuracy of the wind wave modeling results. Land based coastal meteorological stations easily provide accurate wind measurements. In contrast, it is difficult and costly to obtain accurate offshore wind and...
Article
Information about wind characteristic together with the analysis of its potential are a key step when it comes to planning and performance estimation of wind energy projects. In the current study, hence, a statistical analysis on wind energy potential and wind characteristics over the coasts of the South Western Black sea is carried out. The aim is...
Conference Paper
Full-text available
The aim of this study is to compare the performances of the calibrated SWAN models forcing with several re-analyses (ERA-Interim, MERRA, and CFSR) and one operational dataset (ECMWF). For this, the SWAN model is firstly calibrated for each wind independently. The calibration is based on white-capping progress and its tunable parameter (Cds). The mo...
Conference Paper
Full-text available
The aim of this study is to determine spatial distributions of annual, seasonal, and monthly mean wave energy flux over the Black Sea. For this, the wave characteristics are obtained in half-hour temporal resolution produced with a calibrated SWAN model [1, 2] during 31 years. Spatial distribution of wave energy flux is determined by using spatial...
Article
Full-text available
Spatial and temporal variations of significant wave height (H m0) and wind speed (WS) at selected locations over the Black Sea are studied based on 31-year long-term SWAN simulations forced with Climate Forecast System Reanalysis dataset. The objective was to investigate whether or not there is a possible increase in wind and wave conditions along...
Article
Wind and wave characteristics and their long-term variability in the Black Sea over a period of 31 years are investigated in this study. The state-of-the art spectral wave model SWAN is implemented to perform a 31- year wave hindcast in the area of interest. The simulation results are used to assess the inter-annual variability and long-term change...
Research
Full-text available
In the last decades, coastal protection became an issue of increasing importance in civil engineering. This is also because the climate changes induced very often new dynamics in the marine environment, strongly affecting the coastal areas. For this reason, developments in coastal and marine engineering have become also popular research topics. Kno...
Article
This paper evaluates the impact of using different wind field products on the performance of the third generation wave model SWAN in the Black Sea and its capability for predicting both normal and extreme wave conditions during 1996. Wind data were obtained from NCEP CFSR, NASA MERRA, JRA-25, ECMWF Operational, ECMWF ERA40, and ECMWF ERA-Interim. W...
Conference Paper
Full-text available
This study investigates long-term variability of wave characteristic trends in the Black Sea basin over a period of 31 years. The state-of-the art spectral wave model SWAN was applied to hindcast 31-year of wave conditions. The simulation results were used to assess the inter-annual variability and long-term changes in the wave climate of the Black...
Article
Full-text available
In the present study, the performances of four parametric models in the wave hindcast were evaluated by comparing with wave measurements at two locations on the Black Sea. Wilson, SPM, JONSWAP, and CEM methods were used to hindcast significant wave height (H-s) and mean wave period (T-g). Wind data required to perform wind-wave hindeasts is gathere...
Conference Paper
Full-text available
This poster describes the results of some studies performed on the development of an efficient and operational SWAN model for the Black Sea. This model will be used to study the wind-wave climate and wave energy potential in the region and will provide boundary conditions for coastal engineering and nautical activities. The present model developmen...
Article
Forecasting of sea-state characteristics has a great importance in coastal and ocean engineering studies. Therefore, the purpose of this study was to investigate performances of Adaptive-Network-Based Fuzzy Inference System (ANFIS) and several parametric methods in the Black Sea. For this purpose, different fuzzy models with different input combina...
Article
Southeastern Anatolia Project (GAP) region in Turkey is rich in water for irrigation and hydroelectric power. The Euphrates and Tigris Rivers represent over 28% of the nation's water supply by rivers, and the economically irrigable areas in the region make up 20% of those for the entry country. Turkey has a total gross hydropower potential of 433GW...
Article
This study summaries the implementation of the SWAN model forced by the ECMWF ERA Interim dataset reanalyzed 10 m winds over the Black Sea which will be used to study the wind-wave climate and wave energy potential in the region, and its verification. The SWAN model results were compared with directional buoy measurements at three locations along t...
Article
Full-text available
This study aims to forecast the world's, European Union's (EU), and Turkey's electricity energy generation until 2030. For this purpose, the electricity energy sector of the world, EU, and Turkey was overviewed from past to present. The total electricity energy generation for the world, EU, and Turkey were then modelled by using historical energy g...