Calibration of speleothem δ18O with instrumental climate records from Turkey

Catherine Jex; A Baker; Ian Fairchild; Warren Eastwood; MJ Leng; HJ Sloane; L Thomas; E Bekaroğlu

doi:10.1016/j.gloplacha.2009.08.004

Calibration of speleothem δ18O with instrumental climate records from Turkey

Catherine Jex, A Baker, Ian Fairchild, Warren Eastwood, MJ Leng, HJ Sloane, L Thomas, E Bekaroğlu

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Abstract

Stalagmite records of oxygen (delta O-18) isotopes, sampled at sub-annual resolution by micro-mill techniques are correlated with climate parameters over the instrumental period (1961 to 2005 AD). The strongest correlations were found between delta O-18 and total amount of late autumn-winter precipitation (October to January) smoothed by 6 yr, with marginally weaker correlations between the total amount of late autumn-spring precipitation (ONDJF and ONDJFMA) smoothed over the same time period. Two smoothing options were chosen to account for variability in mixing and residence times of stored water in the karst aquifer prior to entering the cave: (1) An average of the last 6 yr of precipitation which yielded a product correlation of -0.71 for the months ONDJ; and (2) a mixing model of 10% short term/event water (

Original language	English
Pages (from-to)	207-217
Number of pages	11
Journal	Global and Planetary Change
Volume	71
Issue number	3-4
DOIs	https://doi.org/10.1016/j.gloplacha.2009.08.004
Publication status	Published - 1 Apr 2010

Keywords

climate calibration
speleothem
Turkey
stable isotopes

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10.1016/j.gloplacha.2009.08.004

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title = "Calibration of speleothem δ18O with instrumental climate records from Turkey",

abstract = "Stalagmite records of oxygen (delta O-18) isotopes, sampled at sub-annual resolution by micro-mill techniques are correlated with climate parameters over the instrumental period (1961 to 2005 AD). The strongest correlations were found between delta O-18 and total amount of late autumn-winter precipitation (October to January) smoothed by 6 yr, with marginally weaker correlations between the total amount of late autumn-spring precipitation (ONDJF and ONDJFMA) smoothed over the same time period. Two smoothing options were chosen to account for variability in mixing and residence times of stored water in the karst aquifer prior to entering the cave: (1) An average of the last 6 yr of precipitation which yielded a product correlation of -0.71 for the months ONDJ; and (2) a mixing model of 10% short term/event water (",

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T1 - Calibration of speleothem δ18O with instrumental climate records from Turkey

AU - Jex, Catherine

AU - Baker, A

AU - Fairchild, Ian

AU - Eastwood, Warren

AU - Leng, MJ

AU - Sloane, HJ

AU - Thomas, L

AU - Bekaroğlu, E

PY - 2010/4/1

Y1 - 2010/4/1

N2 - Stalagmite records of oxygen (delta O-18) isotopes, sampled at sub-annual resolution by micro-mill techniques are correlated with climate parameters over the instrumental period (1961 to 2005 AD). The strongest correlations were found between delta O-18 and total amount of late autumn-winter precipitation (October to January) smoothed by 6 yr, with marginally weaker correlations between the total amount of late autumn-spring precipitation (ONDJF and ONDJFMA) smoothed over the same time period. Two smoothing options were chosen to account for variability in mixing and residence times of stored water in the karst aquifer prior to entering the cave: (1) An average of the last 6 yr of precipitation which yielded a product correlation of -0.71 for the months ONDJ; and (2) a mixing model of 10% short term/event water (

AB - Stalagmite records of oxygen (delta O-18) isotopes, sampled at sub-annual resolution by micro-mill techniques are correlated with climate parameters over the instrumental period (1961 to 2005 AD). The strongest correlations were found between delta O-18 and total amount of late autumn-winter precipitation (October to January) smoothed by 6 yr, with marginally weaker correlations between the total amount of late autumn-spring precipitation (ONDJF and ONDJFMA) smoothed over the same time period. Two smoothing options were chosen to account for variability in mixing and residence times of stored water in the karst aquifer prior to entering the cave: (1) An average of the last 6 yr of precipitation which yielded a product correlation of -0.71 for the months ONDJ; and (2) a mixing model of 10% short term/event water (

KW - climate calibration

KW - speleothem

KW - Turkey

KW - stable isotopes

U2 - 10.1016/j.gloplacha.2009.08.004

DO - 10.1016/j.gloplacha.2009.08.004

M3 - Article

VL - 71

SP - 207

EP - 217

JO - Global and Planetary Change

JF - Global and Planetary Change

IS - 3-4

ER -

Calibration of speleothem δ18O with instrumental climate records from Turkey

Abstract

Keywords

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