Date/Time
Date(s) - Mon 15 April
13:00 - 14:00
Location
AM101, Alan MacDiarmid Building, VUW
Dr Francesco Muschitiello
Associate Professor in Physical Geography at the University of Cambridge, UK
Francesco’s expertise revolves around the use of climate proxy data based on stable and radiogenic isotopes to reconstruct past changes in ocean and atmospheric circulation. His current research focuses on the development of probabilistic techniques to improve the accuracy and precision of timescales associated with ice cores and deep-sea sediment records.
Abstract:
Improving absolute age scales and synchronizing climate records from different archives is of vital importance to constrain the timing and mechanisms of abrupt climate change. In this talk, I will present a new quantitative synchronization strategy for providing a coherent stratigraphic framework to paleoclimatic records, as well as for developing a common timescale for marine and ice core records. I will examine chronological findings from a number of case studies focused on polar ice cores and North Atlantic marine sediments, respectively, which provide the backbone of some of the most unique and detailed records of global and regional climate change. The results are based on a novel automated method to align proxy records and quantify dating inconsistencies between timescales. Finally I will present a new application of cosmogenic 10Be in marine sediments as a tool to construct precise chronologies for palaeoceanographic data that does not depend on climate tuning.
All welcome.