This directory includes data relative to floods number and layers tickness measures at the Ledro Lake, near Garda (riva di Garda, Rovereto). ------ At NOAA data are available here: hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:15090 # Study_Name: A 2000 year long seasonal record of floods in the southern European Alps, Lake Ledro, Northern Italy # Investigators: # Wirth,S.B.; Gilli,A.; Simonneau,A.; Ariztegui,D.; Vannière,B.; Glur,L.; Chapron,E.; Magny,M.; Anselmetti,F.S.; # Description_and_Notes Description: This dataset contains ages and thicknesses of individual flood # layers ('thickness' files) as well as 30-year moving sums of flood events # ('counts' files) for all seasons. The dating of the flood layers is based # on varve counting and the age-model error of ±2.5% is estimated based on # the comparison with five radiocarbon ages. #-------------------- # Publication # Authors: Wirth, S. B., A. Gilli, A. Simonneau, D. Ariztegui, # B. Vannière, L. Glur, E. Chapron, M. Magny, and F. S. Anselmetti # Published_Date_or_Year: 2013 # Published_Title: A 2000 year long seasonal record of floods in the # southern European Alps # Journal_Name: Geophysical Research Letters # Volume: 40 # Pages: 4025–4029 # DOI: 10.1002/grl.50741 # Abstract: Knowledge of past natural flood variability and controlling # climate factors is of high value since it can be useful to refine # projections of the future flood behavior under climate warming. In this # context, we present a seasonally resolved 2000 year long flood frequency # and intensity reconstruction from the southern Alpine slope (North Italy) # using annually laminated (varved) lake sediments. Floods occurred # predominantly during summer and autumn, whereas winter and spring events # were rare. The all-season flood frequency and, particularly, the # occurrence of summer events increased during solar minima, suggesting # solarinduced circulation changes resembling negative conditions of the # North Atlantic Oscillation as controlling atmospheric mechanism. # Furthermore, the most extreme autumn events occurred during a period of # warm Mediterranean sea surface temperature. Interpreting these results in # regard to present climate change, our data set proposes for a warming # scenario, a decrease in summer floods, but an increase in the intensity of # autumn floods at the South-Alpine slope. ------- fz 19.4.2015