reveals hydrological response of the cave to extreme rainfall events in the Midwest, USA. Cave-flooding events
are identified within the two samples by the presence of detrital layers composed of clay sized particles.
Comparison with instrumental records of precipitation demonstrates a strong correlation between these
cave-flood events and extreme rainfall observed in the Upper Mississippi Valley. A simple model is developed
to assess the nature of rainfall capable of flooding the cave. The model is first calibrated to the last 50-yr
(1950–1998 A.D.) instrumental record of daily precipitation data for the town of Spring Valley and verified
with the first 50 yr of record from 1900 to 1949 A.D. Frequency analysis shows that these extreme flood events
have increased from the last half of the nineteenth century. Comparison with other paleohydrological records
shows increased occurrence of extreme rain events during periods of higher moisture availability. Our study
implies that increased moisture availability in the Midwestern region, due to rise in temperature from global
warming could lead to an increase in the occurrence of extreme rainfall events.
Is this getting as boring for everyone else as it is for me ?