Precipitation and Streamflow Reconstructions from Tree Rings for the Lower Kızılırmak River Basin, Turkey

The Kızılırmak River is the longest inland river, has the second-largest basin, and is one of the most important water sources of Turkey. On the other hand, flow data in the basin are too short-term and discordant, with too many gaps to provide reliable information regarding variations in river runo...

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Main Authors: Sena Genç, Hüseyin Tuncay Güner
Format: Article
Language:English
Published: MDPI AG 2022-03-01
Series:Forests
Subjects:
Online Access:https://www.mdpi.com/1999-4907/13/4/501
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author Sena Genç
Hüseyin Tuncay Güner
author_facet Sena Genç
Hüseyin Tuncay Güner
author_sort Sena Genç
collection DOAJ
description The Kızılırmak River is the longest inland river, has the second-largest basin, and is one of the most important water sources of Turkey. On the other hand, flow data in the basin are too short-term and discordant, with too many gaps to provide reliable information regarding variations in river runoff. In this research, we reconstructed the April–July total precipitation and mean April–August streamflow of Gökırmak River at one gauge in the lower Kızılırmak River Basin using seven regional tree-ring chronologies. Tree-ring chronologies were highly correlated with the precipitation from April to July and with the streamflow from April to August. Both reconstructions successfully explained total variance in instrumental records with 0.36 (precipitation) and 0.35 (streamflow) R<sup>2</sup> values. We provided 210 years (1794–2003) of precipitation and streamflow reconstructions, which largely overlapped. Five extreme dry (1840, 1842, 1873, 1887, and 1947) and four extreme wet years (1829, 1837, 1814 and 1881) were determined. The longest consecutive drought and wet events were three years long, for the periods of 1926–1928 and 1835–1837, respectively. The 13-year low-pass filter values highlighted a 30-year-long (from 1843 to 1872) stationary period of April–August mean streamflow.
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spelling doaj.art-f8e6c6f63bc8411fb4a1b4d868d7fb192023-11-30T21:07:57ZengMDPI AGForests1999-49072022-03-0113450110.3390/f13040501Precipitation and Streamflow Reconstructions from Tree Rings for the Lower Kızılırmak River Basin, TurkeySena Genç0Hüseyin Tuncay Güner1Forest Botany Department, Faculty of Forestry, Istanbul University-Cerrahpaşa, Bahçeköy, Istanbul 34473, TurkeyForest Botany Department, Faculty of Forestry, Istanbul University-Cerrahpaşa, Bahçeköy, Istanbul 34473, TurkeyThe Kızılırmak River is the longest inland river, has the second-largest basin, and is one of the most important water sources of Turkey. On the other hand, flow data in the basin are too short-term and discordant, with too many gaps to provide reliable information regarding variations in river runoff. In this research, we reconstructed the April–July total precipitation and mean April–August streamflow of Gökırmak River at one gauge in the lower Kızılırmak River Basin using seven regional tree-ring chronologies. Tree-ring chronologies were highly correlated with the precipitation from April to July and with the streamflow from April to August. Both reconstructions successfully explained total variance in instrumental records with 0.36 (precipitation) and 0.35 (streamflow) R<sup>2</sup> values. We provided 210 years (1794–2003) of precipitation and streamflow reconstructions, which largely overlapped. Five extreme dry (1840, 1842, 1873, 1887, and 1947) and four extreme wet years (1829, 1837, 1814 and 1881) were determined. The longest consecutive drought and wet events were three years long, for the periods of 1926–1928 and 1835–1837, respectively. The 13-year low-pass filter values highlighted a 30-year-long (from 1843 to 1872) stationary period of April–August mean streamflow.https://www.mdpi.com/1999-4907/13/4/501dendrohydrology<i>Pinus nigra</i>droughtfloodAnatolia
spellingShingle Sena Genç
Hüseyin Tuncay Güner
Precipitation and Streamflow Reconstructions from Tree Rings for the Lower Kızılırmak River Basin, Turkey
Forests
dendrohydrology
<i>Pinus nigra</i>
drought
flood
Anatolia
title Precipitation and Streamflow Reconstructions from Tree Rings for the Lower Kızılırmak River Basin, Turkey
title_full Precipitation and Streamflow Reconstructions from Tree Rings for the Lower Kızılırmak River Basin, Turkey
title_fullStr Precipitation and Streamflow Reconstructions from Tree Rings for the Lower Kızılırmak River Basin, Turkey
title_full_unstemmed Precipitation and Streamflow Reconstructions from Tree Rings for the Lower Kızılırmak River Basin, Turkey
title_short Precipitation and Streamflow Reconstructions from Tree Rings for the Lower Kızılırmak River Basin, Turkey
title_sort precipitation and streamflow reconstructions from tree rings for the lower kizilirmak river basin turkey
topic dendrohydrology
<i>Pinus nigra</i>
drought
flood
Anatolia
url https://www.mdpi.com/1999-4907/13/4/501
work_keys_str_mv AT senagenc precipitationandstreamflowreconstructionsfromtreeringsforthelowerkızılırmakriverbasinturkey
AT huseyintuncayguner precipitationandstreamflowreconstructionsfromtreeringsforthelowerkızılırmakriverbasinturkey