Location
MC 5479
Candidate
Leonard Korreshi | Applied Mathematics, University of Waterloo
Title
Decoding Lake Superior Winter Dynamics through High-Frequency Decadal Data
Abstract
Winter dynamics in very large lakes such as Lake Superior have long been neglected due to challenges in data acquisition, lack of interest, and perceived ecological unimportance. 15 years of hourly-recorded moored thermistor chain and ADCP data collected by the Large Lakes Observatory at University of Minnesota-Duluth provide a wealth of data on the stages of the lake winter: fall and spring overturns, the development, steady, and weakening of inverse stratification. EOFs are used to characterize thermal profiles in winter as it develops within a year and variation between years, while wavelet coherence is used to analyze which atmospheric and solar effects dominate the temperature profile over the progression of the season. Future work entails a focus detecting internal wave phenomena and how they develop and interact with inverse stratification.