Josh Pike

Josh Pike

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Josh Pike
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Start Year

2017 (Cohort 4)

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PhD Project
PhD Title
Extending the varve record for Central Patagonia: Assessing glacier dynamics and responses during the last deglaciation
Research Theme
Past Life and Environments
Primary Supervisor

Adrian Palmer

Primary Institution
Secondary Supervisor

Varyl Thorndycraft

Secondary Institution

During the last glaciation and subsequent deglaciation, Patagonia was covered by an ice sheet, which has been suggested to have been modified by climatic forcing. However, there have been few palaeoenvironmental studies that have the required resolution to adequately test models of regional environmental change and changes in the behaviour of the Patagonian Ice Sheet at millennial, centennial and decadal timescales. This study will target high-resolution archives to build upon the work of Bendle et al. (2017a) whom created a 1000-year varve chronology on the eastern shore of Lago Buenos Aires. This project aims to improve our knowledge and understandings of glacier dynamics during the last deglaciation of Central Patagonia through the analysis of annually-laminated varve sediments and geomorphology from previously unstudied sites between 46-47°S. This study will reconstruct regional palaeoclimate variability at millennial, centennial and decadal timescales using varves and tephrochronology, as well as examining the influence of interannual climatic variability on ice sheet dynamics during the last deglaciation. This along with the morphostratigraphic evidence will allow for the improvement of the deglaciation model for the Patagonian Ice Sheet within Central Patagonia.

Policy Impact
Background Reading


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