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Cave dripwater isotopic signals related to the altitudinal gradient of Mount-Lebanon: implication for speleothem studies. / Nehme, Carole; Verheyden, Sophie; Nader, Fadi; Adjizian-Gerard, Jocelyne; Genty, Dominque; De Bondt, Kevin; Minster, Benedicte; Salem, Ghada; Verstraeten, David; Claeys, Philippe.

In: International Journal of Speleology, Vol. 48, No. 1, 2019, p. 63-74.

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Nehme, C, Verheyden, S, Nader, F, Adjizian-Gerard, J, Genty, D, De Bondt, K, Minster, B, Salem, G, Verstraeten, D & Claeys, P 2019, 'Cave dripwater isotopic signals related to the altitudinal gradient of Mount-Lebanon: implication for speleothem studies' International Journal of Speleology, vol. 48, no. 1, pp. 63-74.

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Author

Nehme, Carole ; Verheyden, Sophie ; Nader, Fadi ; Adjizian-Gerard, Jocelyne ; Genty, Dominque ; De Bondt, Kevin ; Minster, Benedicte ; Salem, Ghada ; Verstraeten, David ; Claeys, Philippe. / Cave dripwater isotopic signals related to the altitudinal gradient of Mount-Lebanon: implication for speleothem studies. In: International Journal of Speleology. 2019 ; Vol. 48, No. 1. pp. 63-74.

BibTeX

@article{45a9c4e5df59493e8e1db87893d64e62,
title = "Cave dripwater isotopic signals related to the altitudinal gradient of Mount-Lebanon: implication for speleothem studies",
abstract = "An important step in paleoclimate reconstructions based on vadose cave carbonate deposits or speleothems is to evaluate the sensitivity of the cave environment and speleothems to regional climate. Accordingly, we studied four caves, located at different altitudes along the western flank of Mount-Lebanon (Eastern Mediterranean). The objectives of this study are to identify the present-day variability in temperature, pCO2, and water isotopic composition and to assess the possible influence of the altitudinal gradient on cave drip waters and cave streams. We present here an overview of the spatial variability of rainwater based on local and regional data, and we compare these data with our results, i.e., temperature, air pCO2, and the isotopic composition of cave water and modern cave calcite collected in 2011 and 2014. The results show that the rainwater isotopic signal is generally preserved in the cave dripwater isotopic composition with some exceptions in large caves with high ceilings where evaporation effects may influence its isotopic composition. The altitude effect observed in rainwater isotopic composition seems to be transferred to the cave dripwater. Different δ18O/100 m gradients between dripwater and rainwater (0.13‰ and 0.21‰, respectively) are noted. This is mainly attributed to the δ18O/100 m value of the dripwater which is site-specific and dependent on i) local processes within the epikarst/soil, ii) the relation to the precipitation altitude gradient and iii) the extension of the defined infiltration basin.",
author = "Carole Nehme and Sophie Verheyden and Fadi Nader and Jocelyne Adjizian-Gerard and Dominque Genty and {De Bondt}, Kevin and Benedicte Minster and Ghada Salem and David Verstraeten and Philippe Claeys",
year = "2019",
language = "English",
volume = "48",
pages = "63--74",
journal = "International Journal of Speleology",
issn = "0392-6672",
publisher = "Societa Speleologica Italiana",
number = "1",

}

RIS

TY - JOUR

T1 - Cave dripwater isotopic signals related to the altitudinal gradient of Mount-Lebanon: implication for speleothem studies

AU - Nehme, Carole

AU - Verheyden, Sophie

AU - Nader, Fadi

AU - Adjizian-Gerard, Jocelyne

AU - Genty, Dominque

AU - De Bondt, Kevin

AU - Minster, Benedicte

AU - Salem, Ghada

AU - Verstraeten, David

AU - Claeys, Philippe

PY - 2019

Y1 - 2019

N2 - An important step in paleoclimate reconstructions based on vadose cave carbonate deposits or speleothems is to evaluate the sensitivity of the cave environment and speleothems to regional climate. Accordingly, we studied four caves, located at different altitudes along the western flank of Mount-Lebanon (Eastern Mediterranean). The objectives of this study are to identify the present-day variability in temperature, pCO2, and water isotopic composition and to assess the possible influence of the altitudinal gradient on cave drip waters and cave streams. We present here an overview of the spatial variability of rainwater based on local and regional data, and we compare these data with our results, i.e., temperature, air pCO2, and the isotopic composition of cave water and modern cave calcite collected in 2011 and 2014. The results show that the rainwater isotopic signal is generally preserved in the cave dripwater isotopic composition with some exceptions in large caves with high ceilings where evaporation effects may influence its isotopic composition. The altitude effect observed in rainwater isotopic composition seems to be transferred to the cave dripwater. Different δ18O/100 m gradients between dripwater and rainwater (0.13‰ and 0.21‰, respectively) are noted. This is mainly attributed to the δ18O/100 m value of the dripwater which is site-specific and dependent on i) local processes within the epikarst/soil, ii) the relation to the precipitation altitude gradient and iii) the extension of the defined infiltration basin.

AB - An important step in paleoclimate reconstructions based on vadose cave carbonate deposits or speleothems is to evaluate the sensitivity of the cave environment and speleothems to regional climate. Accordingly, we studied four caves, located at different altitudes along the western flank of Mount-Lebanon (Eastern Mediterranean). The objectives of this study are to identify the present-day variability in temperature, pCO2, and water isotopic composition and to assess the possible influence of the altitudinal gradient on cave drip waters and cave streams. We present here an overview of the spatial variability of rainwater based on local and regional data, and we compare these data with our results, i.e., temperature, air pCO2, and the isotopic composition of cave water and modern cave calcite collected in 2011 and 2014. The results show that the rainwater isotopic signal is generally preserved in the cave dripwater isotopic composition with some exceptions in large caves with high ceilings where evaporation effects may influence its isotopic composition. The altitude effect observed in rainwater isotopic composition seems to be transferred to the cave dripwater. Different δ18O/100 m gradients between dripwater and rainwater (0.13‰ and 0.21‰, respectively) are noted. This is mainly attributed to the δ18O/100 m value of the dripwater which is site-specific and dependent on i) local processes within the epikarst/soil, ii) the relation to the precipitation altitude gradient and iii) the extension of the defined infiltration basin.

M3 - Article

VL - 48

SP - 63

EP - 74

JO - International Journal of Speleology

JF - International Journal of Speleology

SN - 0392-6672

IS - 1

ER -

ID: 46699854