Wilhelm B., Vogel H., Crouzet C., Etienne D., Anselmetti F. S. (2016), Frequency and intensity of palaeofloods at the interface of Atlantic and Mediterranean climate domains, in Climate of the Past
, 12(2), 299-316.
Glur L., Stalder N. F., Wirth S. B., Gilli A., Anselmetti F. S. (2014), Alpine lacustrine varved record reveals summer temperature as main control of glacier fluctuations over the past 2250 years, in The Holocene
, 25(2), 280-287.
Wirth Stefanie B., Gilli Adrian, Simonneau Anaëlle, Ariztegui Daniel, Vannière Boris, Glur Lukas, Chapron Emmanuel, Magny Michel, Anselmetti Flavio S. (2013), A 2000 year long seasonal record of floods in the southern European AlpsFLOOD SEASONALITY IN THE SOUTHERN ALPS, in Geophysical Research Letters
, 40(15), 4025-4029.
Joannin S., Vannière B., Galop D., Peyron O., Haas J. N., Gilli A., Chapron E., Wirth S. B., Anselmetti F., Desmet M., Magny M. (2013), Climate and vegetation changes during the Lateglacial and early–middle Holocene at Lake Ledro (southern Alps, Italy), in Climate of the Past
, 9(2), 913-933.
Wirth Stefanie B., Gilli Adrian, Niemann Helge, Dahl Tais W., Ravasi Damiana, Sax Nadja, Hamann Yvonne, Peduzzi Raffaele, Peduzzi Sandro, Tonolla Mauro, Lehmann Moritz F., Anselmetti Flavio S. (2013), Combining sedimentological, trace metal (Mn, Mo) and molecular evidence for reconstructing past water-column redox conditions: The example of meromictic Lake Cadagno (Swiss Alps), in Geochimica et Cosmochimica Acta
, 120, 220-238.
Glur Lukas, Wirth Stefanie B., Büntgen Ulf, Gilli Adrian, Haug Gerald H., Schär Christoph, Beer Jürg, Anselmetti Flavio S. (2013), Frequent floods in the European Alps coincide with cooler periods of the past 2500 years, in Scientific Reports
, 3, 1-5.
Wirth Stefanie B., Glur Lukas, Gilli Adrian, Anselmetti Flavio S. (2013), Holocene flood frequency across the Central Alps – solar forcing and evidence for variations in North Atlantic atmospheric circulation, in Quaternary Science Reviews
, 80, 112-128.
Gilli A. Anselmetti F.S. Glur L. Wirth S. (2013), Lake sediments as archives of recur- rence rates and intensities of past flood events, in Springer Series Advances in Global Change Research
Simonneau A., Chapron E., Vannière B., Wirth S. B., Gilli A., Di Giovanni C., Anselmetti F. S., Desmet M., Magny M. (2013), Mass-movement and flood-induced deposits in Lake Ledro, southern Alps, Italy: implications for Holocene palaeohydrology and natural hazards, in Climate of the Past
, 9(2), 825-840.
Vannière B., Magny M., Joannin S., Simonneau A., Wirth S. B., Hamann Y., Chapron E., Gilli A., Desmet M., Anselmetti F. S. (2013), Orbital changes, variation in solar activity and increased anthropogenic activities: controls on the Holocene flood frequency in the Lake Ledro area, Northern Italy, in Climate of the Past
, 9(3), 1193-1209.
Niemann H. Stadnitskaia A. Wirth S.B. Gilli A. Anselmetti F.S. Sinninghe Damsté J.S. Schouten (2012), Bacterial GDGTs in Holocene sediments and catchment soils of a high Alpine lake: application of the MBT/CBT- paleothermometer, in Climate of the Past
, 8, 889-906.
Ravasi D.F. Peduzzi S. Guidi V. Peduzzi R. Wirth S.B. Gilli A. & Tonolla M. (2012), Development of a real-time PCR method for the detection of fossil 16S rDNA fragments of phototrophic sulfur bacteria in the sediments of Lake Cadagno, in Geobiology
, 10, 196-204.
Simonneau A. Chapron E. Vannière B. Wirth S.B. Gilli A. Di Giovanni C. Anselmetti F.S. Desmet (2012), Multidisciplinary distinction of mass-movement and flood-induced deposits in lacustrine environments: implications for Holocene palaeohydrology and natural hazards (Lake Ledro, Southern Alps, Italy), in Climate of the Past Discussions
Summary of the research planFloods caused by extreme precipitation events represent one of the major natural hazards in the Alpine realm with several billions Swiss Francs of damage only in the last decade. New climate models point to the possibility that flood frequency and intensities increase as a result of the upcoming climate changes. To scale these predicted changes of extremes, knowledge of the natural variety is required, which is, however, currently limited to only the historic period. This relatively short time interval may not represent the full range of values. No systematic record of Holocene Alpine flood activities exists to date. The FloodAlp project aims to reconstruct the frequency and intensities of Holocene flood events in the Alps by using lake sediments as natural geologic archives acting as prehistoric recorders of extreme events. On the basis of the results acquired in over two years of the three-year SNF project, this proposal seeks funds for an additional fourth year to complete and expand the promising scientific achievements within the dissertations of PhD students Lukas Glur and Stefanie Wirth.The FloodAlp project started on 1.12.2008 with the employment of PhD student Stefanie Wirth (working place Geological Inst., ETHZ). The second PhD position was filled on 1.2.2009 with the hiring of Lukas Glur (working place Eawag, Dübendorf). Both PhD students focused in the first two years on their respective field areas N and S of the Alps. In this period, we investigated ~15 lakes in a north-south transect across the Alps, that cover also a range in altitude. These lake basins record extreme precipitation events with characteristic sediment layers, which contrast sharply to the regular background sediments. The large numbers of lakes is required to provide a meaningful statistical base of flood events, so that regional patterns can be recognized and local outlayers can be avoided. Applying sophisticated depth-to-age model for each lake, events will be dated and grouped in temporal intervals such as 100-year bins, so that all records can be compared on the same temporal scale. The north-south transect provides information on the regional pattern reflecting synchronous or asynchronous behavior north and south of the Alps. Such differences would represent contrasting circulation patterns that control distribution of moisture and precipitation. Differing patterns between high and low-altitude lakes may provide information on seasonal flood distribution, because high-altitude lakes are frozen half of the year and can record flood events only during summer.The requested fourth year of SNF support will allow the expansion of the already acquired lake records with five more lakes to provide a statistically more sound base of a central Alpine flood-event catalogue. The final flood chronologies will be evaluated in the context of climate significance, but they also will be compared to vegetation change and human impact caused by various forms of land use (in cooperation with Univ. Bern, Univ. Basel and Univ. Besancon). The observed climate pattern will be discussed with climate scientists from the Institute of Climate and Atmospheric Science at ETHZ. A special emphasis will be given on the periods during the Holocene that were characterized by warmer climate than today. These periods may act as analogs to compare the reconstructed natural extremes with the modeled future scenarios characterized by increased temperatures and an accelerated hydrologic cycle. The fourth year is furthermore needed to have sufficient time to prepare a series of publications as outcome of the two FloodAlp PhD theses.