Perry Spector
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Antarctic Ice Sheet paleo-constraint database Open
We present a database of observational constraints on past Antarctic Ice Sheet changes during the last glacial cycle intended to consolidate the observations that represent our understanding of past Antarctic changes and for state-space es…
Cosmogenic-nuclide data from Antarctic nunataks can constrain past ice sheet instabilities Open
We apply geologic evidence from ice-free areas in Antarctica to evaluate model simulations of ice sheet response to warm climates. This is important because such simulations are used to predict ice sheet behaviour in future warm climates, …
Antarctic ice sheet paleo-constraint database Open
We present a database of observational constraints on past Antarctic ice sheet changes during the last glacial cycle intended to consolidate the observations that represent our understanding of past Antarctic changes, for state-space estim…
Cosmogenic-nuclide data from Antarctic nunataks can constrain past ice sheet sensitivity to marine ice margin instabilities Open
We apply geologic evidence from ice-free areas in Antarctica to evaluate model simulations of ice sheet response to warm climates. This is important because such simulations are used to predict ice sheet behaviour in future warm climates, …
View article: Mid-Holocene thinning of David Glacier, Antarctica: chronology and controls
Mid-Holocene thinning of David Glacier, Antarctica: chronology and controls Open
Quantitative satellite observations only provide an assessment of ice sheet mass loss over the last four decades. To assess long-term drivers of ice sheet change, geological records are needed. Here we present the first millennial-scale re…
View article: Mid-Holocene thinning of David Glacier, Antarctica: Chronologyand Controls
Mid-Holocene thinning of David Glacier, Antarctica: Chronologyand Controls Open
Quantitative satellite observations provide a comprehensive assessment of ice sheet mass loss over the last four decades, but limited insights into long-term drivers of ice sheet change. Geological records can extend the observational reco…
Exposure-age data from across Antarctica reveal mid-Miocene establishment of polar desert climate Open
High-elevation rock surfaces in Antarctica have some of the oldest cosmogenic-nuclide exposure ages on Earth, dating back to the Miocene. A compilation of all available 3He, 10Be, and 21Ne exposure-age data from the Antarctic continent sho…
Supplemental Material: Exposure-age data from across Antarctica reveal mid-Miocene establishment of polar desert climate Open
Table S1 (sample and exposure-age information for all samples in the ICE-D:ANTARCTICA database that have Miocene apparent exposure ages).
Supplemental Material: Exposure-age data from across Antarctica reveal mid-Miocene establishment of polar desert climate Open
Table S1 (sample and exposure-age information for all samples in the ICE-D:ANTARCTICA database that have Miocene apparent exposure ages).
Thickness of the divide and flank of the West Antarctic Ice Sheet through the last deglaciation Open
We report cosmogenic-nuclide measurements from two isolated groups of nunataks in West Antarctica: the Pirrit Hills, located midway between the grounding line and the divide in the Weddell Sea sector, and the Whitmore Mountains, located al…
Thickness of the divide and flank of the West Antarctic Ice Sheet through the last deglaciation Open
We report cosmogenic-nuclide measurements from two isolated groups of nunataks in West Antarctica: the Pirrit Hills, located midway between the grounding line and the divide in the Weddell Sea sector, and the Whitmore Mountains, located al…
Antarctic glacial history inferred from cosmogenic-nuclide measurements in rocks Open
This dissertation describes three research projects on the glacial history of Antarctica using measurements of cosmogenic-nuclides in glacial deposits and bedrock surfaces. \n \nThe first chapter investigates the deglaciation chronology of…
West Antarctic sites for subglacial drilling to test for past ice-sheet collapse Open
Mass loss from the West Antarctic Ice Sheet (WAIS) is increasing, and there is concern that an incipient large-scale deglaciation of the marine basins may already be underway. Measurements of cosmogenic nuclides in subglacial bedrock surfa…
West Antarctic sites for subglacial drilling to test for past ice-sheetcollapse Open
Mass loss from the West Antarctic Ice Sheet (WAIS) is increasing, and there is concern that an incipient large-scale deglaciation of the marine basins may already be underway. Measurements of cosmogenic nuclides in subglacial bedrock surfa…