Lake Nar
Lake Nar
Lake Nar (Turkish: Nar Gölü) is a brackish lake in the Cappadocia region of central Turkey (38°20'24.43"N, 34°27'23.69"E, 1363 m.a.s.l). It is currently around 21 metres deep and 0.7 square kilometres in area[1]. The lake basin is thought to have been formed over one million years ago as a result of volcanic activity; specifically it is classed as a maar lake[2]. There is still geothermal activity in the area, which has given rise to hot springs around the lake. In recent years, the geothermal waters have been pumped up to nearby hotels for use in their hot baths.
Lake Nar is particularly known for the scientific work that has been carried out on its sediments and waters by a team of British, Turkish and French researchers. Since 1997, water samples have been taken from the lake to monitor how the lake level and chemistry has changed with climate. Over this period, central Turkey experience a shift to drier conditions (especially hotter summers with more evaporation), which was seen in Lake Nar as a lake level fall and a change in the chemistry of the lake[3]. In 2010, cores were taken from the lake sediments, extending from the present lake bed at around 21 metres water depth to over 21 metres below the lake bed. This sediment record extends from the present day back to around 14,000 years ago, and by analysing the changes in the chemistry of the sediments it has been possible to reconstruct how the lake level, and hence how the climate of central Turkey, has changed over time[4].
References
- ^ Dean, Jonathan R.; Eastwood, Warren J.; Roberts, Neil; Jones, Matthew D.; Yiğitbaşıoğlu, Hakan; Allcock, Samantha L.; Woodbridge, Jessie; Metcalfe, Sarah E.; Leng, Melanie J. (November 2014). "Tracking the hydro-climatic signal from lake to sediment: A field study from central Turkey". Journal of Hydrology. doi:10.1016/j.jhydrol.2014.11.004.
- ^ Gevrek, Ali İhsan; Kazanci, Nizamettin (January 2000). "A Pleistocene, pyroclastic-poor maar from central Anatolia, Turkey: influence of a local fault on a phreatomagmatic eruption". Journal of Volcanology and Geothermal Research. 95 (1–4): 309-317. doi:10.1016/S0377-0273(99)00121-3.
{{cite journal}}: More than one of|pages=and|page=specified (help) - ^ Dean, Jonathan R.; Eastwood, Warren J.; Roberts, Neil; Jones, Matthew D.; Yiğitbaşıoğlu, Hakan; Allcock, Samantha L.; Woodbridge, Jessie; Metcalfe, Sarah E.; Leng, Melanie J. (November 2014). "Tracking the hydro-climatic signal from lake to sediment: A field study from central Turkey". Journal of Hydrology. doi:10.1016/j.jhydrol.2014.11.004.
- ^ Dean, Jonathan R.; Jones, Matthew D.; Leng, Melanie J.; Noble, Stephen R.; Metcalfe, Sarah E.; Sloane, Hilary J.; Sahy, Diana; Eastwood, Warren J.; Roberts, C. Neil (September 2015). "Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy". Quaternary Science Reviews. 124: 162–174. doi:10.1016/j.quascirev.2015.07.023.
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