tailieunhanh - High-resolution temperature and precipitation variability of southwest Anatolia since 1730 CE from Lake Gölcük sedimentary records

Wet periods are evidenced by dark olive green mixed lithology (sandy, clay, and silts) and high values in MS and log(Sr/Ca). On the other hand, dry periods are associated with light olive green clayey mud lithology and high values in log(Ca/K). We relate the wet periods to negative North Atlantic Oscillation (NAO–) and the dry periods to NAO+. Additionally, all wet periods are related with time of low solar activity and dry periods, except Dalton Minimum, are related with periods of high solar activity. Consequently, we suggest that hydroclimatic changes observed in the Lake Gölcük sedimentary records were caused by the influence of largescale atmospheric circulation and solar activity. | Turkish Journal of Earth Sciences Turkish J Earth Sci 2021 30 601-610 http earth TÜBİTAK Research Article doi yer-2008-14 High-resolution temperature and precipitation variability of southwest Anatolia since 1730 CE from Lake Gölcük sedimentary records Iliya Bauchi DANLADI1 Sena AKÇER-ÖN1 Z. Bora ÖN1 Sabine SCHMIDT2 1 Department of Geological Engineering Faculty of Engineering Muğla Sıtkı Koçman University Muğla Turkey 2 CNRS University Bordeaux EPOC EPHE UMR 5805 Pessac France Received Accepted Published Online Final Version Abstract We report high-resolution multiproxy analyses lithology μXRF and magnetic susceptibility MS of two short gravity sediment cores from the crater Lake Gölcük southwest Turkey. Our results provide a detailed hydroclimatic record for the last 290 years. Aided with factor analysis of μXRF data and 210Pb and 137Cs dating our multiproxy data show that the Lake Gölcük records documented a series of wet and dry periods between 1730 71 and 2018 3 CE. Wet periods are evidenced by dark olive green mixed lithology sandy clay and silts and high values in MS and log Sr Ca . On the other hand dry periods are associated with light olive green clayey mud lithology and high values in log Ca K . We relate the wet periods to negative North Atlantic Oscillation NAO and the dry periods to NAO . Additionally all wet periods are related with time of low solar activity and dry periods except Dalton Minimum are related with periods of high solar activity. Consequently we suggest that hydroclimatic changes observed in the Lake Gölcük sedimentary records were caused by the influence of large- scale atmospheric circulation and solar activity. Key words Hydroclimate paleoclimate solar activity North Atlantic Oscillation 1. Introduction In addition the possible NCP influence has also been The Mediterranean region has been reported as one of the previously reported in some of the paleoclimate records .

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• Solar activity
• North Atlantic Oscillation
• High resolution temperature
• Micro X ray fluorescence (μXRF) analysis
• Magnetic susceptibility analysis
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• The natural tap and thermal waters
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