In recent years,Turkey has turned from merging with the West to"returning to the Middle East"and become an ambitious but indispensible force in regional affairs.On the one hand,the extent of Turkey’s involv...In recent years,Turkey has turned from merging with the West to"returning to the Middle East"and become an ambitious but indispensible force in regional affairs.On the one hand,the extent of Turkey’s involvement in the regional affairs in the Middle East has never been seen before:supporting Islamic forces such as the"Muslim Brotherhood",which has made Turkey fall in enmity with the Sisi展开更多
The post-collisional Cenozoic basic volcanic rocks in NE Turkey show temporal variations in whole-rock lithophile element and highly siderophile element(HSE)systematics that are mainly associated with the nature of su...The post-collisional Cenozoic basic volcanic rocks in NE Turkey show temporal variations in whole-rock lithophile element and highly siderophile element(HSE)systematics that are mainly associated with the nature of sub-continental lithospheric mantle(SCLM)sources and parental melt generation.So far,the traditional whole-rock lithophile geochemical data of these basic volcanic rocks have provided important constraints on the nature of SCLM sources.Integrated lithophile element and HSE geochemical data of these basic volcanic rocks also reveal the heterogeneity of the SCLM source,which is principally related to variable metasomatism resulting from previous subduction(s)and post-collisional mantle-crust interactions in an extensional setting.Lithophile element geochemical features suggest that the parental magmas have derived from metasomatized spinel-to garnet-bearing SCLM sources for Eocene and Miocene basic volcanic rocks with subduction signatures whereas originated from spinel-to garnet-bearing SCLM sources for Mio-Pliocene and Plio-Quaternary basaltic volcanic rocks without the subduction signature.Lithophile element and HSE geo-chemistry also reveal that Eocene and Miocene basic vol-canic rocks were affected by more pronounced crustal contamination than the basaltic volcanic rocks of Mio-Pliocene and Quaternary.Furthermore,the integrated lithophile element and HSE compositions of these basic volcanic rocks,together with the regional asymmetric lithospheric delamination model,reveal that the compositional variation(especially due to metasomatism)was significant temporally in the heterogeneity of the SCLM sources from which parental magmas formed during the Cenozoic era.展开更多
On February 6,2023,two earthquakes with magnitudes of M_(W) 7.8 and M_(W) 7.5 struck southeastern Turkey,causing significant casualties and economic losses.These seismic events occurred along the East Anatolian Fault ...On February 6,2023,two earthquakes with magnitudes of M_(W) 7.8 and M_(W) 7.5 struck southeastern Turkey,causing significant casualties and economic losses.These seismic events occurred along the East Anatolian Fault Zone,a convergent boundary between the Arabian Plate and the Anatolian Subplate.In this study,we analyze the M_(W) 7.8 and M_(W) 7.5 earthquakes by comparing their aftershock relocations,tomographic images,and stress field inversions.The earthquakes were localized in the upper crust and exhibited steep dip angles.Furthermore,the aftershocks occurred either close to the boundaries of low and high P-wave velocity anomaly zones or within the low P-wave velocity anomaly zones.The East Anatolia Fault,associated with the M_(W) 7.8 earthquake,and the SürgüFault,related to the M_(W) 7.5 earthquake,predominantly experienced shear stress.However,their western sections experienced a combination of strike-slip and tensile stresses in addition to shear stress.The ruptures of the M_(W) 7.8 and M_(W) 7.5 earthquakes appear to have bridged a seismic gap that had seen sparse seismicity over the past 200 years prior to the 2023 Turkey earthquake sequence.展开更多
On February 6, 2023, the doublet earthquake including two main shocks with magnitudes M_(W)7.8 and M_(W)7.5, occurred near the western side of the East Anatolian Fault at the southeast boundary of the Anatolian Platea...On February 6, 2023, the doublet earthquake including two main shocks with magnitudes M_(W)7.8 and M_(W)7.5, occurred near the western side of the East Anatolian Fault at the southeast boundary of the Anatolian Plateau in Turkey. Based on the WGM2012 Bouguer gravity anomaly data and the Etopo1topography data, this study first introduced a joint inversion of admittance and coherence functions and used the Bayesian optimal parameter estimation method to obtain the effective elastic thickness Teand loading ratio F of the lithosphere for various tectonic units in the Anatolian Plateau. Secondly, we discussed the characteristics and influencing factors of the lithospheric mechanical strength and analyzed its relationship with seismic activity. The lithospheric mechanical strength of the Anatolian Plateau showed clear lateral heterogeneity and a "weak-strong-weak" spatial pattern from east to west,reflecting various tectonic processes. At last, the strong seismic activity was found where the lithospheric strength was low in the Anatolian Plate. We also incorporated GPS strain rate and other results to investigate the tectonic background and primary causes of the M_(W)7.8 and M_(W)7.5 doublet earthquakes in Turkey. The results have a good insight into urban safety design in the Turkish region, including postdisaster rehabilitation, earthquake hazard assessment, and loss reduction.展开更多
This article’s primary objective is to answer the question of what is the semantic language of identity and interests of Turkey and Georgia?In addition,it analyzes the connotative quotes that exchanged between the tw...This article’s primary objective is to answer the question of what is the semantic language of identity and interests of Turkey and Georgia?In addition,it analyzes the connotative quotes that exchanged between the two countries during diplomatic visits.Because the article concentrated on the remarks that were stressed during visits and meetings that took place between the years 2002 and 2022,it was necessary to search through 150 news on civil.ge site and filter down to 35 news before applying the content analysis.The AntConc corpus analysis was used in order to comprehend the nature of the political conversation between both countries.According to the findings,the constructivism of core theme that claim states view each other via the identity through interaction was verified.The purpose of the research is to provide a contribution to the study of the identities and interests of Georgia and Turkey who are good neighbors.展开更多
Recently,China and Turkey have been actively promoting the synergy between the Belt and Road Initiative and Turkey’s“Middle Corridor”Initiative.The“Guangxi’s Connecting with Five Continents(Asia-Europe)”China(Gu...Recently,China and Turkey have been actively promoting the synergy between the Belt and Road Initiative and Turkey’s“Middle Corridor”Initiative.The“Guangxi’s Connecting with Five Continents(Asia-Europe)”China(Guangxi)-Turkey Economic and Trade Cooperation Promotion Conference jointly hosted by CCPIT’s Guangxi Branch and the Turkish Consulate General in Guangzhou was held in Nanning,with the aim to further expand exchanges and cooperation between Turkey and Guangxi in the economic and trade fields.展开更多
Shape irregularity,a sub-factor of parcel fragmentation is a problem that hinders sustainable agriculture and is solved using land consolidation projects.Determination of the parcel shape degree contributes significan...Shape irregularity,a sub-factor of parcel fragmentation is a problem that hinders sustainable agriculture and is solved using land consolidation projects.Determination of the parcel shape degree contributes significantly to spatial prioritization where there is also a high probability of achieving positive effects of consolidation projects.This study aims to determine the shape degree of the agricultural parcels both at singular and rural county scales in Tekirdag Province,Turkey in 2020 by combining the parcel shape index(PSI) with the minimum bounding geometry index(MBG) to improve parcel scores.Hot-spot zones of the highly irregular and near optimum parcels were also determined using Getis-Ord G_(i)^(*) statistic.The parcel degrees were classified into four categories,namely highly irregular,irregular,regular and near optimum.The obtained unweighted scores of the parameters exhibit deviations from the expected values.After weighting by pairwise comparison,the values approached ideal scores.Among 346 740 parcels,53% were highly irregular and irregular and 47% were regular and near optimum shapes after weighting whereas these were 70% and 30%,respectively before weighting.The average parcel degree of 63 rural counties was regular while the average parcel degree of the remaining 264 rural counties was irregular.The combined use of PSI and MBG index improved the correctness of the parcel shape score.It could be suggested to use as a tool in land consolidation prioritization.展开更多
On February 6,2023,an M_(w)7.8 earthquake hit the south of Kahramanmaras prefecture,Turkey,followed by another M_(w)7.5 earthquake after nine hours in the middle region of the Kahramanmaras prefecture.More than 84,000...On February 6,2023,an M_(w)7.8 earthquake hit the south of Kahramanmaras prefecture,Turkey,followed by another M_(w)7.5 earthquake after nine hours in the middle region of the Kahramanmaras prefecture.More than 84,000 buildings collapsed or were severely damaged,and more than 50,000 lives were lost in Turkey and Syria.Some of the authors,as members of Chinese rescue team,entered Antakya,Hatay prefecture,and investigated the damaged buildings.This paper first summarizes the damage patterns of buildings and provides three reasons for the massive number of collapsed buildings;i.e.,the lack of seismic measures for better ductility,site effects such as liquefaction and surface rupture,and pronounced low-frequency components of the ground motions.Next,the seismic responses of two typical buildings are calculated based on the geometric data estimated by visual inspection.The results imply that the resonance of the whole structure and the poorer ductility of key members resulted in the collapse of buildings.Finally,some conclusions are drawn.Note that although a large number of buildings were seriously damaged to collapse,the majority of buildings in the areas of extreme shaking were lightly or moderately damaged,which implies that well designed and constructed buildings were able to survive and protect human lives even in over-design earthquakes.展开更多
I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want y...I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.展开更多
To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Su...To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.展开更多
To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Su...To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.Once I was accepted into the International Ophthalmology Fellowship Foundation,I became overwhelmed with excitement.My country was in an economic crisis due to Covid-19 pandemic and I was very worried that I would miss this chance if I can not get a sponsorship.I was extremely happy when dear Cordula informed me about my Educational Grant.展开更多
To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosehahya Bran Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Su...To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosehahya Bran Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.Once was accepted into the Intetrnational Ophthalmology Fellowship Foundation,I became overwhelmed with excitement.My country was in an economie crisis due to Covid-19 pandemic and I was ver worried that I would miss this chance if I can not get a sponsorship.I was extremely happy when dear Cordula informed me about my Educational Grant.展开更多
ToDearProf.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subs...ToDearProf.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.Once I was accepted into the International Ophthalmology Fellowship Foundation,I became overwhelmed with excitement.My country was in an economic crisis due to Covid-19 pandemic and I was very worried that I would miss this chance if I can not get a sponsorship.I was extremely happy when dear Cordula informed me about my Educational Grant.展开更多
Turkey’s Eastern Anatolia Region is the oldest known mineral mining area of Maden and Alacakaya.Chromite production in the Alacakaya field constitutes 50% of the country’s exports,and copper mines in the Maden regio...Turkey’s Eastern Anatolia Region is the oldest known mineral mining area of Maden and Alacakaya.Chromite production in the Alacakaya field constitutes 50% of the country’s exports,and copper mines in the Maden region account for approximately 12% of the country’s copper production.There is a risk of water pollution due to significant mine waste which affects the Inci and Maden rivers.The water needs of many settlements are met from these streams,which run through these two mine sites.This study investigated the water pollution in the rivers.25 water samples were collected during the dry and rainy periods,and the Al,Cr,Cu,Fe,Li,Mn,Ni,Pb,Sr and Zn contents of these samples were examined in terms of health.Evaluation of element concentrations and creation of spatial distribution maps were performed using ArcGIS software.Spatial distribution maps,correlation and cluster analysis indicate that the source of heavy metals observed in waters is mine fields.The heavy metal content of the samples is higher in the dry period,the high concentration values are obtained from the mine sites,the decrease in the concentrations throughout the flow during the rainy period,are indicators of the effect of the mines on the water pollution.As a result of the comparison from the analysis results of water samples with World Health Organization(WHO),Environmental Protection Agency(EPA)and European Commission(EC)standards,the element values of Al,Cr,Fe,Mn,Ni and Pb exceeded the permissible values for health.The concentrations of these elements for dry period samples are:0-6.411 mg L^(-1),0.006-0.235 mg L^(-1),0-13.433 mg L^(-1),0-0.316 mg L^(-1),0-0.495 mg L^(-1),0-0.065mg L^(-1),and for rainy period samples are 0-1.698mg/L,0-0.2 mg L^(-1),0-9.033 mg L^(-1),0-0.173 mg L^(-1),0-0.373 mg L^(-1),0-0.034 mg L^(-1),respectively.Although the waters in the region are polluted by heavy metals,it has been determined that there is no noncarcinogenic hazard as a result of the calculation of the hazard index(HI<1)by ingestion and dermal contact within the scope of human health risk assessment.This study will be beneficial as it draws attention to the prevention of the negative effects of water pollution,which may cause serious health problems in the future as a result of mining activities in the region.展开更多
This study investigates the asymmetric relationship between global and national fac-tors and domestic food prices in Turkey,considering the recent rapid and continuous increase in domestic food prices.In this context,...This study investigates the asymmetric relationship between global and national fac-tors and domestic food prices in Turkey,considering the recent rapid and continuous increase in domestic food prices.In this context,six global and three national explana-tory variables were included,and monthly data for the period from January 2004 to June 2021 were used.In addition,novel nonlinear time-series econometric approaches,such as wavelet coherence,Granger causality in quantiles,and quantile-on-quantile regression,were applied for examination at different times,frequencies,and quan-tiles.Moreover,the Toda-Yamamoto(TY)causality test and quantile regression(QR)approach were used for robustness checks.The empirical results revealed that(i)there is a significant relationship between domestic food prices and explanatory variables at different times and frequencies;(ii)a causal relationship exists in most quantiles,excluding the lowest quantile,some middle quantiles,and the highest quantile for some variables;(iii)the power of the effect of the explanatory variables on domestic food prices varies according to the quantiles;and(iv)the results were validated by the TY causality test and QR,which show that the results were robust.Overall,the empiri-cal results reveal that global and national factors have an asymmetric relationship with domestic food prices,highlighting the effects of fluctuations in global and national variables on domestic food prices.Thus,the results imply that Turkish policymakers should consider the asymmetric effects of global and national factors on domestic food prices at different times,frequencies,and quantiles.展开更多
The most parts of the Earth experience precipitation variability as a part of their normal climates over both short- and long-time periods. These variations of precipitation will have unpredictable and perhaps unexpec...The most parts of the Earth experience precipitation variability as a part of their normal climates over both short- and long-time periods. These variations of precipitation will have unpredictable and perhaps unexpectedly extreme consequences(such as drought and flood) with respect to frequency and intensity for many regions of the Earth. Because of high precipitation fluctuations, the Mediterranean region is also the areas of the world sensitive to precipitation changes which often involve frequent drought conditions in Turkey. In this study, drought conditions at annual, seasonal and monthly time scales over the period of 1975–2010 were examined for Antakya-Kahramanmara? Graben which is located in the eastern part of the Mediterranean region of Turkey. Application of appropriate measures to analyze and monitor droughts is recognized as a major challenge to scientists involved in atmospheric studies. Standardized Precipitation Index(SPI) and cumulative deviation curve techniques were used to determine drought conditions. Results indicated that the study area presented a cyclic pattern of variations with alternating drier and wetter years. From analyses of annual, seasonal and monthly drought series it can be seen that precipitation characteristic of the area is changing. By the results, apparent wet and dry periods can be distinguished. This study also indicated that precipitation totals of winter, spring and summer seasons were slightly decreased during the study period. Drought frequency was increased especially for the northern part of the area in the last ten years. Drought periods were divided into 1982–1985, 1999–2002 and 2004–2008, respectively. According to our analyses, the time scale of 1999–2002 was the driest period in the most of the graben area. The study area, which covers agriculturally important fertile alluvial plains, will experience increasing pressure on its water resources because of its growing population and industry, ever-larger demands for intensive agricultural activities, and frequent drought events.展开更多
文摘In recent years,Turkey has turned from merging with the West to"returning to the Middle East"and become an ambitious but indispensible force in regional affairs.On the one hand,the extent of Turkey’s involvement in the regional affairs in the Middle East has never been seen before:supporting Islamic forces such as the"Muslim Brotherhood",which has made Turkey fall in enmity with the Sisi
文摘The post-collisional Cenozoic basic volcanic rocks in NE Turkey show temporal variations in whole-rock lithophile element and highly siderophile element(HSE)systematics that are mainly associated with the nature of sub-continental lithospheric mantle(SCLM)sources and parental melt generation.So far,the traditional whole-rock lithophile geochemical data of these basic volcanic rocks have provided important constraints on the nature of SCLM sources.Integrated lithophile element and HSE geochemical data of these basic volcanic rocks also reveal the heterogeneity of the SCLM source,which is principally related to variable metasomatism resulting from previous subduction(s)and post-collisional mantle-crust interactions in an extensional setting.Lithophile element geochemical features suggest that the parental magmas have derived from metasomatized spinel-to garnet-bearing SCLM sources for Eocene and Miocene basic volcanic rocks with subduction signatures whereas originated from spinel-to garnet-bearing SCLM sources for Mio-Pliocene and Plio-Quaternary basaltic volcanic rocks without the subduction signature.Lithophile element and HSE geo-chemistry also reveal that Eocene and Miocene basic vol-canic rocks were affected by more pronounced crustal contamination than the basaltic volcanic rocks of Mio-Pliocene and Quaternary.Furthermore,the integrated lithophile element and HSE compositions of these basic volcanic rocks,together with the regional asymmetric lithospheric delamination model,reveal that the compositional variation(especially due to metasomatism)was significant temporally in the heterogeneity of the SCLM sources from which parental magmas formed during the Cenozoic era.
基金supported by grants from the National Natural Science Foundation of China(Grant Nos.42130312 and 4198810101)the Second Tibetan Plateau Scientific Expedition and Research Program(Grant No.2019QZKK07)
文摘On February 6,2023,two earthquakes with magnitudes of M_(W) 7.8 and M_(W) 7.5 struck southeastern Turkey,causing significant casualties and economic losses.These seismic events occurred along the East Anatolian Fault Zone,a convergent boundary between the Arabian Plate and the Anatolian Subplate.In this study,we analyze the M_(W) 7.8 and M_(W) 7.5 earthquakes by comparing their aftershock relocations,tomographic images,and stress field inversions.The earthquakes were localized in the upper crust and exhibited steep dip angles.Furthermore,the aftershocks occurred either close to the boundaries of low and high P-wave velocity anomaly zones or within the low P-wave velocity anomaly zones.The East Anatolia Fault,associated with the M_(W) 7.8 earthquake,and the SürgüFault,related to the M_(W) 7.5 earthquake,predominantly experienced shear stress.However,their western sections experienced a combination of strike-slip and tensile stresses in addition to shear stress.The ruptures of the M_(W) 7.8 and M_(W) 7.5 earthquakes appear to have bridged a seismic gap that had seen sparse seismicity over the past 200 years prior to the 2023 Turkey earthquake sequence.
基金funded by the National Natural Science Foundation of China (Grant Nos.U1939205,41974095)the Basic Research Fund of the Institute of Geophysics,China Earthquake Administration (Grant Nos.DQJB21R30)。
文摘On February 6, 2023, the doublet earthquake including two main shocks with magnitudes M_(W)7.8 and M_(W)7.5, occurred near the western side of the East Anatolian Fault at the southeast boundary of the Anatolian Plateau in Turkey. Based on the WGM2012 Bouguer gravity anomaly data and the Etopo1topography data, this study first introduced a joint inversion of admittance and coherence functions and used the Bayesian optimal parameter estimation method to obtain the effective elastic thickness Teand loading ratio F of the lithosphere for various tectonic units in the Anatolian Plateau. Secondly, we discussed the characteristics and influencing factors of the lithospheric mechanical strength and analyzed its relationship with seismic activity. The lithospheric mechanical strength of the Anatolian Plateau showed clear lateral heterogeneity and a "weak-strong-weak" spatial pattern from east to west,reflecting various tectonic processes. At last, the strong seismic activity was found where the lithospheric strength was low in the Anatolian Plate. We also incorporated GPS strain rate and other results to investigate the tectonic background and primary causes of the M_(W)7.8 and M_(W)7.5 doublet earthquakes in Turkey. The results have a good insight into urban safety design in the Turkish region, including postdisaster rehabilitation, earthquake hazard assessment, and loss reduction.
文摘This article’s primary objective is to answer the question of what is the semantic language of identity and interests of Turkey and Georgia?In addition,it analyzes the connotative quotes that exchanged between the two countries during diplomatic visits.Because the article concentrated on the remarks that were stressed during visits and meetings that took place between the years 2002 and 2022,it was necessary to search through 150 news on civil.ge site and filter down to 35 news before applying the content analysis.The AntConc corpus analysis was used in order to comprehend the nature of the political conversation between both countries.According to the findings,the constructivism of core theme that claim states view each other via the identity through interaction was verified.The purpose of the research is to provide a contribution to the study of the identities and interests of Georgia and Turkey who are good neighbors.
文摘Recently,China and Turkey have been actively promoting the synergy between the Belt and Road Initiative and Turkey’s“Middle Corridor”Initiative.The“Guangxi’s Connecting with Five Continents(Asia-Europe)”China(Guangxi)-Turkey Economic and Trade Cooperation Promotion Conference jointly hosted by CCPIT’s Guangxi Branch and the Turkish Consulate General in Guangzhou was held in Nanning,with the aim to further expand exchanges and cooperation between Turkey and Guangxi in the economic and trade fields.
文摘Shape irregularity,a sub-factor of parcel fragmentation is a problem that hinders sustainable agriculture and is solved using land consolidation projects.Determination of the parcel shape degree contributes significantly to spatial prioritization where there is also a high probability of achieving positive effects of consolidation projects.This study aims to determine the shape degree of the agricultural parcels both at singular and rural county scales in Tekirdag Province,Turkey in 2020 by combining the parcel shape index(PSI) with the minimum bounding geometry index(MBG) to improve parcel scores.Hot-spot zones of the highly irregular and near optimum parcels were also determined using Getis-Ord G_(i)^(*) statistic.The parcel degrees were classified into four categories,namely highly irregular,irregular,regular and near optimum.The obtained unweighted scores of the parameters exhibit deviations from the expected values.After weighting by pairwise comparison,the values approached ideal scores.Among 346 740 parcels,53% were highly irregular and irregular and 47% were regular and near optimum shapes after weighting whereas these were 70% and 30%,respectively before weighting.The average parcel degree of 63 rural counties was regular while the average parcel degree of the remaining 264 rural counties was irregular.The combined use of PSI and MBG index improved the correctness of the parcel shape score.It could be suggested to use as a tool in land consolidation prioritization.
基金National Natural Science Foundation of China for Distinguished Young Scholars under Grant No.52125806Heilongjiang Touyan Innovation Team Program under Grant No.3016。
文摘On February 6,2023,an M_(w)7.8 earthquake hit the south of Kahramanmaras prefecture,Turkey,followed by another M_(w)7.5 earthquake after nine hours in the middle region of the Kahramanmaras prefecture.More than 84,000 buildings collapsed or were severely damaged,and more than 50,000 lives were lost in Turkey and Syria.Some of the authors,as members of Chinese rescue team,entered Antakya,Hatay prefecture,and investigated the damaged buildings.This paper first summarizes the damage patterns of buildings and provides three reasons for the massive number of collapsed buildings;i.e.,the lack of seismic measures for better ductility,site effects such as liquefaction and surface rupture,and pronounced low-frequency components of the ground motions.Next,the seismic responses of two typical buildings are calculated based on the geometric data estimated by visual inspection.The results imply that the resonance of the whole structure and the poorer ductility of key members resulted in the collapse of buildings.Finally,some conclusions are drawn.Note that although a large number of buildings were seriously damaged to collapse,the majority of buildings in the areas of extreme shaking were lightly or moderately damaged,which implies that well designed and constructed buildings were able to survive and protect human lives even in over-design earthquakes.
文摘I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.
文摘To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.
文摘To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.Once I was accepted into the International Ophthalmology Fellowship Foundation,I became overwhelmed with excitement.My country was in an economic crisis due to Covid-19 pandemic and I was very worried that I would miss this chance if I can not get a sponsorship.I was extremely happy when dear Cordula informed me about my Educational Grant.
文摘To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosehahya Bran Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.Once was accepted into the Intetrnational Ophthalmology Fellowship Foundation,I became overwhelmed with excitement.My country was in an economie crisis due to Covid-19 pandemic and I was ver worried that I would miss this chance if I can not get a sponsorship.I was extremely happy when dear Cordula informed me about my Educational Grant.
文摘ToDearProf.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.Once I was accepted into the International Ophthalmology Fellowship Foundation,I became overwhelmed with excitement.My country was in an economic crisis due to Covid-19 pandemic and I was very worried that I would miss this chance if I can not get a sponsorship.I was extremely happy when dear Cordula informed me about my Educational Grant.
文摘Turkey’s Eastern Anatolia Region is the oldest known mineral mining area of Maden and Alacakaya.Chromite production in the Alacakaya field constitutes 50% of the country’s exports,and copper mines in the Maden region account for approximately 12% of the country’s copper production.There is a risk of water pollution due to significant mine waste which affects the Inci and Maden rivers.The water needs of many settlements are met from these streams,which run through these two mine sites.This study investigated the water pollution in the rivers.25 water samples were collected during the dry and rainy periods,and the Al,Cr,Cu,Fe,Li,Mn,Ni,Pb,Sr and Zn contents of these samples were examined in terms of health.Evaluation of element concentrations and creation of spatial distribution maps were performed using ArcGIS software.Spatial distribution maps,correlation and cluster analysis indicate that the source of heavy metals observed in waters is mine fields.The heavy metal content of the samples is higher in the dry period,the high concentration values are obtained from the mine sites,the decrease in the concentrations throughout the flow during the rainy period,are indicators of the effect of the mines on the water pollution.As a result of the comparison from the analysis results of water samples with World Health Organization(WHO),Environmental Protection Agency(EPA)and European Commission(EC)standards,the element values of Al,Cr,Fe,Mn,Ni and Pb exceeded the permissible values for health.The concentrations of these elements for dry period samples are:0-6.411 mg L^(-1),0.006-0.235 mg L^(-1),0-13.433 mg L^(-1),0-0.316 mg L^(-1),0-0.495 mg L^(-1),0-0.065mg L^(-1),and for rainy period samples are 0-1.698mg/L,0-0.2 mg L^(-1),0-9.033 mg L^(-1),0-0.173 mg L^(-1),0-0.373 mg L^(-1),0-0.034 mg L^(-1),respectively.Although the waters in the region are polluted by heavy metals,it has been determined that there is no noncarcinogenic hazard as a result of the calculation of the hazard index(HI<1)by ingestion and dermal contact within the scope of human health risk assessment.This study will be beneficial as it draws attention to the prevention of the negative effects of water pollution,which may cause serious health problems in the future as a result of mining activities in the region.
基金from funding agencies in the public,commercial,or not-for-profit sectors.
文摘This study investigates the asymmetric relationship between global and national fac-tors and domestic food prices in Turkey,considering the recent rapid and continuous increase in domestic food prices.In this context,six global and three national explana-tory variables were included,and monthly data for the period from January 2004 to June 2021 were used.In addition,novel nonlinear time-series econometric approaches,such as wavelet coherence,Granger causality in quantiles,and quantile-on-quantile regression,were applied for examination at different times,frequencies,and quan-tiles.Moreover,the Toda-Yamamoto(TY)causality test and quantile regression(QR)approach were used for robustness checks.The empirical results revealed that(i)there is a significant relationship between domestic food prices and explanatory variables at different times and frequencies;(ii)a causal relationship exists in most quantiles,excluding the lowest quantile,some middle quantiles,and the highest quantile for some variables;(iii)the power of the effect of the explanatory variables on domestic food prices varies according to the quantiles;and(iv)the results were validated by the TY causality test and QR,which show that the results were robust.Overall,the empiri-cal results reveal that global and national factors have an asymmetric relationship with domestic food prices,highlighting the effects of fluctuations in global and national variables on domestic food prices.Thus,the results imply that Turkish policymakers should consider the asymmetric effects of global and national factors on domestic food prices at different times,frequencies,and quantiles.
文摘The most parts of the Earth experience precipitation variability as a part of their normal climates over both short- and long-time periods. These variations of precipitation will have unpredictable and perhaps unexpectedly extreme consequences(such as drought and flood) with respect to frequency and intensity for many regions of the Earth. Because of high precipitation fluctuations, the Mediterranean region is also the areas of the world sensitive to precipitation changes which often involve frequent drought conditions in Turkey. In this study, drought conditions at annual, seasonal and monthly time scales over the period of 1975–2010 were examined for Antakya-Kahramanmara? Graben which is located in the eastern part of the Mediterranean region of Turkey. Application of appropriate measures to analyze and monitor droughts is recognized as a major challenge to scientists involved in atmospheric studies. Standardized Precipitation Index(SPI) and cumulative deviation curve techniques were used to determine drought conditions. Results indicated that the study area presented a cyclic pattern of variations with alternating drier and wetter years. From analyses of annual, seasonal and monthly drought series it can be seen that precipitation characteristic of the area is changing. By the results, apparent wet and dry periods can be distinguished. This study also indicated that precipitation totals of winter, spring and summer seasons were slightly decreased during the study period. Drought frequency was increased especially for the northern part of the area in the last ten years. Drought periods were divided into 1982–1985, 1999–2002 and 2004–2008, respectively. According to our analyses, the time scale of 1999–2002 was the driest period in the most of the graben area. The study area, which covers agriculturally important fertile alluvial plains, will experience increasing pressure on its water resources because of its growing population and industry, ever-larger demands for intensive agricultural activities, and frequent drought events.