TY  - JOUR
A1  - Fohlmeister, Jens
A1  - Schröder-Ritzrau, Andrea
A1  - Scholz, Denis
A1  - Spötl, Christoph
A1  - Riechelmann, Dana F. C.
A1  - Mudelsee, Manfred
A1  - Wackerbarth, Anne Katrin
A1  - Gerdes, Axel
A1  - Riechelmann, Sylvia
A1  - Immenhauser, Adrian
A1  - Richter, Detlev K.
A1  - Mangini, Augusto
T1  - Bunker Cave stalagmites: an archive for central European Holocene climate variability
T2  - Climate of the past discussions
N2  - Holocene climate was characterised by variability on multi-centennial to multi-decadal time scales. In central Europe, these fluctuations were most pronounced during winter. Here we present a new record of past winter climate variability for the last 10.8 ka based on four speleothems from Bunker Cave, Western Germany. Due to its central European location, the cave site is particularly well suited to record changes in precipitation and temperature in response to changes in the North Atlantic realm. We present high resolution records of δ18O, δ13C values and Mg/Ca ratios. We attribute changes in the Mg/Ca ratio to variations in the meteoric precipitation. The stable C isotope composition of the speleothems most likely reflects changes in vegetation and precipitation and variations in the δ18O signal are interpreted as variations in meteoric precipitation and temperature. We found cold and dry periods between 9 and 7 ka, 6.5 and 5.5 ka, 4 and 3 ka as well as between 0.7 to 0.2 ka. The proxy signals in our stalagmites compare well with other isotope records and, thus, seem representative for central European Holocene climate variability. The prominent 8.2 ka event and the Little Ice Age cold events are both recorded in the Bunker cave record. However, these events show a contrasting relationship between climate and δ18O, which is explained by different causes underlying the two climate anomalies. Whereas the Little Ice Age is attributed to a pronounced negative phase of the North Atlantic Oscillation, the 8.2 ka event was triggered by cooler conditions in the North Atlantic due to a slowdown of the Thermohaline Circulation.
Y1  - 2012
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/27887
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-278876
SN  - 1814-9340
N1  - © Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License.
VL  - 8
SP  - 1687
EP  - 1720
PB  - Copernicus-Ges.
CY  - Katlenburg-Lindau
ER  -