Tom Marchitto


Paleoceanographers deploy a multicorer aboard the R/V Knorr in the Florida Straits. This coring device is designed to capture multiple undisturbed samples of the sediment-water interface. Photo credit: Tom Marchitto.

Selected current projects:

Timing and Paleoceanographic Impacts of the Onset of Arctic-Baffin Bay Throughflow
PI: Anne Jennings; co-PIs: John Andrews, Alex Jahn, Tom Marchitto, Julio Sepulveda; Postdocs: Lineke Woelders, Hannah Zanowski
We are using numerical modeling and multi-proxy analyses of sediment cores from northern Baffin Bay to discover the timing and consequences of the Holocene (post-glacial) opening of the western gateway for Arctic freshwater to the Labrador Sea. We hypothesize that the establishment of this connection through the Canadian archipelago was important for the Atlantic meridional overturning circulation (AMOC) and the development of the North Water Polynya. Supported by NSF OPP Arctic Natural Sciences (2018-2021).

FORABOT: An Autonomous and Accessible System for Sorting Foraminifera
Collaborative PIs: Edgar Lobaton, Tom Marchitto
We are developing an autonomous sorting system for foraminifera, which will be accessible (in terms of usability and cost) to the scientific community. The automated identification of forams to the species level is accomplished using machine learning, developed under our prior NSF grant "A Visual System for Autonomous Foraminifera Identification." The current system makes use of micromanipulation and microfluidics to facilitate the transport of forams from a hopper to their sorted receptacles. Supported by NSF OCE Ocean Technology and Interdisciplinary Coordination (2016-2018 & 2019-2021).

Development of Individual Foraminiferal Mg/Ca to Reconstruct Past ENSO Variability
PI: Tom Marchitto; PhD student: Brigitta Rongstad
Supported by NSF OCE Paleo Perspectives on Climate Change (2016-2018).

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