Stalagmite SV1 from Grotta Savi, located at the SE margin of the European Alps (Italy), is the first Alpine speleothem that continuously spans the past c. 17 kyr. Extension rate and δ<sup>18</sup> O<sub>c</sub> record for the Lateglacial probably reflect a combination of temperature and rainfall, with rainfall exerting the dominant effect. Low speleothem calcite δ<sup>18</sup>O<sub>c</sub> values were recorded from c. 14.5 and 12.35 kyr, during GI-1 (Bølling-Allerød) interstadial, which, in our interpretation, was warm and wet. The GS-1 (Younger Dryas) was characterized by a shift to heavier δ<sup>18</sup>O<sub>c</sub>, coinciding with δ<sup>13</sup>C<sub>c</sub> enrichment and extremely low extension rate (&lt;8 μm/year). These characteristics indicate that GS-1 climate was cool and dry in the SE Alps. Calibration using historical data revealed that there is a positive δ<sup>18</sup>O<sub>c</sub>/dT relationship. A 1°C rise in mean annual temperature should correspond to c. 2.85‰ increase of SV-1 δ<sup>18</sup>O<sub>c</sub>. We reconstructed a slow and steady temperature rise of c. 0.5°C since 10 kyr BP, in broad agreement with reconstructions from pollen data for SE Europe. Stalagmite SV1 indicates that climate variability in the SE Alps has been influenced by the Mediterranean Sea for the past c. 17 kyr. © 2005 Taylor &amp; Francis.

Frisia, S., Borsato, A., Spötl, C., Villa, I., & Cucchi, F. (2005). Climate variability in the SE Alps of Italy over the past 17 000 years reconstructed from a stalagmite record. BOREAS, 34, 445-455 [10.1080/03009480500231336].

Climate variability in the SE Alps of Italy over the past 17 000 years reconstructed from a stalagmite record

VILLA, IGOR MARIA;
2005

Abstract

Stalagmite SV1 from Grotta Savi, located at the SE margin of the European Alps (Italy), is the first Alpine speleothem that continuously spans the past c. 17 kyr. Extension rate and δ18 Oc record for the Lateglacial probably reflect a combination of temperature and rainfall, with rainfall exerting the dominant effect. Low speleothem calcite δ18Oc values were recorded from c. 14.5 and 12.35 kyr, during GI-1 (Bølling-Allerød) interstadial, which, in our interpretation, was warm and wet. The GS-1 (Younger Dryas) was characterized by a shift to heavier δ18Oc, coinciding with δ13Cc enrichment and extremely low extension rate (<8 μm/year). These characteristics indicate that GS-1 climate was cool and dry in the SE Alps. Calibration using historical data revealed that there is a positive δ18Oc/dT relationship. A 1°C rise in mean annual temperature should correspond to c. 2.85‰ increase of SV-1 δ18Oc. We reconstructed a slow and steady temperature rise of c. 0.5°C since 10 kyr BP, in broad agreement with reconstructions from pollen data for SE Europe. Stalagmite SV1 indicates that climate variability in the SE Alps has been influenced by the Mediterranean Sea for the past c. 17 kyr. © 2005 Taylor & Francis.
Articolo in rivista - Articolo scientifico
Scientifica
Speleothem dating, paleoclimatology
English
445
455
Frisia, S., Borsato, A., Spötl, C., Villa, I., & Cucchi, F. (2005). Climate variability in the SE Alps of Italy over the past 17 000 years reconstructed from a stalagmite record. BOREAS, 34, 445-455 [10.1080/03009480500231336].
Frisia, S; Borsato, A; Spötl, C; Villa, I; Cucchi, F
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/3661
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