Supplementary Material for
A 2000-year long seasonal record of floods in the
southern European Alps
Stefanie B. Wirth1*, Adrian Gilli1, Anaëlle Simonneau2,3, Daniel Ariztegui4, Boris
Vannière5, Lukas Glur6, Emmanuel Chapron2, Michel Magny5, and Flavio S.
Anselmetti6,7
1
2
Geological Institute, ETH Zurich, Zurich, Switzerland
ISTO, UMR 7327 CNRS, University of Orléans, BRGM, Orléans, France
3
GEODE, UMR 5602 CNRS/Univ Toulouse 2, Toulouse, France
4
Earth & Environmental Sciences, University of Geneva, Geneva, Switzerland
5
Chrono-Environment Lab., UMR 6249 CNRS, University of Franche-Comté,
Besançon, France
6
Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf,
Switzerland
7
present address: Institute of Geological Sciences and Oeschger Centre for Climate
Change Research, University of Bern, Bern, Switzerland
Geophysical Research Letters
Introduction
This supplementary material contains additional information on climatic conditions at
the study site, seismic stratigraphy of the lake basin, sedimentology of the
investigated record, and human activities affecting the formation of the annual
lamination during the past 110 years. Furthermore, details on the building of the agedepth model and on time series analysis are given. Finally, an extended version of
Figure 3 in the main text, which also includes records of spring and winter events, is
provided.
Files
text01
Word file containing written information and explanations. For making
reading easier, supplementary figures, tables and captions are included in
this file.
In addition, supplementary figure and table files are provided separately:
fs01
Maps of seasonal precipitation distribution at the study site
fs02
Bathymetric map and reflection seismic profile through sediment core
location
fs03
Basal erosion below the thickest flood deposits in the investigated record
fs04
Age-depth model
fs05
Time series analysis
fs06
Flood-frequency and -intensity reconstruction for all seasons compared to
climate proxies
ts01
Age horizons used for establishing the age-depth model