{"title":"Applicability of real-time PPP technique in polar regions as an accurate and efficient real-time positioning system","authors":"R. M. Alkan, S. Erol, Bilal Mutlu","doi":"10.55730/1300-0985.1891","DOIUrl":"https://doi.org/10.55730/1300-0985.1891","url":null,"abstract":"","PeriodicalId":49411,"journal":{"name":"Turkish Journal of Earth Sciences","volume":"76 4","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139224649","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}
Müge Şenel, H. H. Yavaşoǧlu, Burcu Özsoy, Hi̇mmet Karaman, Mustafa Ümi̇t Gümüşay
{"title":"WebGIS-based data center design for polar science studies: simulation of Türkiye","authors":"Müge Şenel, H. H. Yavaşoǧlu, Burcu Özsoy, Hi̇mmet Karaman, Mustafa Ümi̇t Gümüşay","doi":"10.55730/1300-0985.1893","DOIUrl":"https://doi.org/10.55730/1300-0985.1893","url":null,"abstract":"","PeriodicalId":49411,"journal":{"name":"Turkish Journal of Earth Sciences","volume":"20 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139215347","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}
. Abstract: The Antarctic Peninsula has been rapidly warming, resulting in changes to the abundance and surface cover of terrestrial aquatic ecosystems, as well as their ecosystem structure and function. Therefore, comparative studies of aquatic ecosystems across large latitudinal gradients can be useful in better understanding these changes and making more reliable predictions regarding the consequences of climate change. During Turkish Antarctic Expeditions in 2018 and 2019, samples were collected from 10 lakes and 3 ponds across Maritime Antarctica (north-western coasts of the Antarctic Peninsula). These lakes and ponds were located on Ardley, Robert, Livingstone, Galindez, and Horseshoe islands, covering a latitudinal gradient of over 800 km. Snapshot samplings were conducted of the water chemistry, including nutrient, major ion, and trace metal concentrations, as well as pigment compositions representing the primary productivity and plankton community composition. These lakes and ponds had large variations in nutrient concentrations (0.8–771 µg/L PO 4 and 30–886 µg/L total dissolved inorganic N) and conductivity (30–735 µS), representing a trophic status ranging from ultra-oligotrophic to a few eutrophic sites (for example a pond near penguin colonies). The total productivity, measured as the chlorophyll-a (Chl-a) level, was generally low (0.02–3.2 µg/L) in the lakes, reflecting their oligotrophic characteristics. However, the composition of pigments in the water column showed significant variation across the lakes. Both the patterns in the total Chl-a concentrations and pigment compositions reflected the patterns in conductivity and nutrient gradients across the lakes. Overall, the observed patterns suggested a predominant role of nutrient transport from the sea in driving the chemical composition and primary productivity of Antarctic lakes, mediated by the distance to the sea, as well as the activities of seals and penguin colonies.
{"title":"Water chemistry and pigment composition of 13 lakes and ponds in Maritime Antarctica","authors":"Korhan Özkan","doi":"10.55730/1300-0985.1888","DOIUrl":"https://doi.org/10.55730/1300-0985.1888","url":null,"abstract":". Abstract: The Antarctic Peninsula has been rapidly warming, resulting in changes to the abundance and surface cover of terrestrial aquatic ecosystems, as well as their ecosystem structure and function. Therefore, comparative studies of aquatic ecosystems across large latitudinal gradients can be useful in better understanding these changes and making more reliable predictions regarding the consequences of climate change. During Turkish Antarctic Expeditions in 2018 and 2019, samples were collected from 10 lakes and 3 ponds across Maritime Antarctica (north-western coasts of the Antarctic Peninsula). These lakes and ponds were located on Ardley, Robert, Livingstone, Galindez, and Horseshoe islands, covering a latitudinal gradient of over 800 km. Snapshot samplings were conducted of the water chemistry, including nutrient, major ion, and trace metal concentrations, as well as pigment compositions representing the primary productivity and plankton community composition. These lakes and ponds had large variations in nutrient concentrations (0.8–771 µg/L PO 4 and 30–886 µg/L total dissolved inorganic N) and conductivity (30–735 µS), representing a trophic status ranging from ultra-oligotrophic to a few eutrophic sites (for example a pond near penguin colonies). The total productivity, measured as the chlorophyll-a (Chl-a) level, was generally low (0.02–3.2 µg/L) in the lakes, reflecting their oligotrophic characteristics. However, the composition of pigments in the water column showed significant variation across the lakes. Both the patterns in the total Chl-a concentrations and pigment compositions reflected the patterns in conductivity and nutrient gradients across the lakes. Overall, the observed patterns suggested a predominant role of nutrient transport from the sea in driving the chemical composition and primary productivity of Antarctic lakes, mediated by the distance to the sea, as well as the activities of seals and penguin colonies.","PeriodicalId":49411,"journal":{"name":"Turkish Journal of Earth Sciences","volume":"29 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139219222","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":"Exploring crowdsourcing accountability for mapping Antarctica: a case study using 5 years of social media data","authors":"Ayşe Gi̇z Gülnerman Gengeç","doi":"10.55730/1300-0985.1892","DOIUrl":"https://doi.org/10.55730/1300-0985.1892","url":null,"abstract":"","PeriodicalId":49411,"journal":{"name":"Turkish Journal of Earth Sciences","volume":"13 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139224054","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}
F. Karaoglan, Burcu Karataş, Yavuz Özdemi̇r, Erhan Gülyüz, Oleg Vassilev, M. O. Selbesoğlu, Semih Gi̇ldi̇r
{"title":"The geo/thermochronology of Dismal Island (Marguerite Bay, Antarctic Peninsula)","authors":"F. Karaoglan, Burcu Karataş, Yavuz Özdemi̇r, Erhan Gülyüz, Oleg Vassilev, M. O. Selbesoğlu, Semih Gi̇ldi̇r","doi":"10.55730/1300-0985.1887","DOIUrl":"https://doi.org/10.55730/1300-0985.1887","url":null,"abstract":"","PeriodicalId":49411,"journal":{"name":"Turkish Journal of Earth Sciences","volume":"29 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139219398","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":"Middle Eocene Alveolina-dominated benthic foraminiferal assemblages of the western flank of the Isparta Angle (SW Türkiye): Taxonomy, biostratigraphy, microfacies analysis, and paleoenvironmental implications","authors":"Alper Bozkurt, M. Görmüş, Banu Türkmen Bozkurt","doi":"10.55730/1300-0985.1879","DOIUrl":"https://doi.org/10.55730/1300-0985.1879","url":null,"abstract":"","PeriodicalId":49411,"journal":{"name":"Turkish Journal of Earth Sciences","volume":"34 5","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139265305","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":"Mapping crustal structure and deformation using gravity data in the Bursa Basin and surroundings, Türkiye","authors":"Bülent Oruç, Emir Balkan","doi":"10.55730/1300-0985.1883","DOIUrl":"https://doi.org/10.55730/1300-0985.1883","url":null,"abstract":"","PeriodicalId":49411,"journal":{"name":"Turkish Journal of Earth Sciences","volume":"20 4","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139264865","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":"More evidence of tropical conditions in the Middle Eocene Climatic Optimum (MECO) with new fossil woods from North-Central Türkiye","authors":"Ü. Akkemik, Fikret Koçbulut, Özlem Toprak, Umut Tunç","doi":"10.55730/1300-0985.1880","DOIUrl":"https://doi.org/10.55730/1300-0985.1880","url":null,"abstract":"","PeriodicalId":49411,"journal":{"name":"Turkish Journal of Earth Sciences","volume":"95 3","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139263840","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}
F. Sipahi, M. B. Sadiklar, Mehmet Ali Gücer, Ali̇ Aydin, Rasim Taylan Kara
{"title":"A study on the magnetite skarn mineralization (Gümüşhane, Türkiye): a magnetic survey","authors":"F. Sipahi, M. B. Sadiklar, Mehmet Ali Gücer, Ali̇ Aydin, Rasim Taylan Kara","doi":"10.55730/1300-0985.1882","DOIUrl":"https://doi.org/10.55730/1300-0985.1882","url":null,"abstract":"","PeriodicalId":49411,"journal":{"name":"Turkish Journal of Earth Sciences","volume":"43 9","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139265008","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}
J. Safani, Khalil Ibrahim, WA Deni, Al Rubaiyn, Firdaus Firdaus, Harisma Harisma
: The East Walanae Fault Zone and the West Walanae Fault Zone are the two active fault segments in the south arm of Sulawesi. These fault segments are responsible for the formation of the Sengkang Basin. This geological complexity makes the Sengkang Basin a very interesting area to study. This research aims to (1) identify basin boundaries and lithological contacts; (2) estimate the positions of fault segments; and (3) model the basement beneath the Sengkang Basin. The free-air gravity anomaly from the GGMPlus dataset is employed and then corrected using Bouguer and terrain corrections to provide the complete Bouguer gravity anomaly (CBA). Polynomial surface fitting is used to separate the residual gravity data from the CBA. Nine edge detection filters are employed to identify structural configuration (i.e. basin boundaries, lithological contacts, and fault segments). The Euler deconvolution is utilized to describe the geological structure and estimate its depth. The radially average power spectrum and inversion of the residual gravity anomaly data are applied to analyze the basement of the study area. The results of the analysis show the superiority of the horizontal gradient of tilt angle (HGTA) technique in identifying basin boundaries and lithological contacts. Three new subbasins in the East Sengkang Basin are identified. Furthermore, the HGTA can also reveal lithological contacts very well. Tilt angle of the gradient amplitude (TAHG) technique provides an excellent description of the lineaments of both shallow and deeper buried geological structures. The TAHG approach and Euler deconvolution may define indications of depression zones and 24 new potential fault segments within the depression zones. A number of earthquakes that have happened near the fault segments support this fault assumption. The basement model derived from gravity data has extremely similar patterns and depth trends to that derived from seismic data
{"title":"Interpreting structural configuration of the Sengkang Basin of Indonesia using edge detection and 3-D Euler deconvolution to satellite gravity data","authors":"J. Safani, Khalil Ibrahim, WA Deni, Al Rubaiyn, Firdaus Firdaus, Harisma Harisma","doi":"10.55730/1300-0985.1881","DOIUrl":"https://doi.org/10.55730/1300-0985.1881","url":null,"abstract":": The East Walanae Fault Zone and the West Walanae Fault Zone are the two active fault segments in the south arm of Sulawesi. These fault segments are responsible for the formation of the Sengkang Basin. This geological complexity makes the Sengkang Basin a very interesting area to study. This research aims to (1) identify basin boundaries and lithological contacts; (2) estimate the positions of fault segments; and (3) model the basement beneath the Sengkang Basin. The free-air gravity anomaly from the GGMPlus dataset is employed and then corrected using Bouguer and terrain corrections to provide the complete Bouguer gravity anomaly (CBA). Polynomial surface fitting is used to separate the residual gravity data from the CBA. Nine edge detection filters are employed to identify structural configuration (i.e. basin boundaries, lithological contacts, and fault segments). The Euler deconvolution is utilized to describe the geological structure and estimate its depth. The radially average power spectrum and inversion of the residual gravity anomaly data are applied to analyze the basement of the study area. The results of the analysis show the superiority of the horizontal gradient of tilt angle (HGTA) technique in identifying basin boundaries and lithological contacts. Three new subbasins in the East Sengkang Basin are identified. Furthermore, the HGTA can also reveal lithological contacts very well. Tilt angle of the gradient amplitude (TAHG) technique provides an excellent description of the lineaments of both shallow and deeper buried geological structures. The TAHG approach and Euler deconvolution may define indications of depression zones and 24 new potential fault segments within the depression zones. A number of earthquakes that have happened near the fault segments support this fault assumption. The basement model derived from gravity data has extremely similar patterns and depth trends to that derived from seismic data","PeriodicalId":49411,"journal":{"name":"Turkish Journal of Earth Sciences","volume":"43 2 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139264356","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}
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