R
Ross D. Powell
Researcher at Northern Illinois University
Publications - 115
Citations - 6139
Ross D. Powell is an academic researcher from Northern Illinois University. The author has contributed to research in topics: Glacier & Ice sheet. The author has an hindex of 40, co-authored 115 publications receiving 5614 citations.
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Journal ArticleDOI
Obliquity-paced Pliocene West Antarctic ice sheet oscillations
Tim R Naish,Tim R Naish,Ross D. Powell,Richard H. Levy,Richard H. Levy,Gary S. Wilson,Reed P. Scherer,Franco M Talarico,Lawrence A. Krissek,Frank Niessen,Massimo Pompilio,Terry J. Wilson,Lionel Carter,Robert M. DeConto,Peter Huybers,Robert M. McKay,David Pollard,James Ross,D. Winter,Peter Barrett,Greg H. Browne,Rosemary Cody,Rosemary Cody,Ellen A. Cowan,James S. Crampton,Gavin B. Dunbar,Nelia W. Dunbar,Fabio Florindo,Catalina Gebhardt,Ian J. Graham,M. J. Hannah,Dhiresh Hansaraj,Dhiresh Hansaraj,David M. Harwood,D. Helling,Stuart Henrys,Linda A. Hinnov,Gerhard Kuhn,Philip R. Kyle,Andreas Läufer,P. Maffioli,Diana Magens,Kevin W. Mandernack,William C. McIntosh,C. Millan,Roger H. Morin,Christian Ohneiser,Timothy Paulsen,Davide Persico,Ian Raine,J. Reed,J. Reed,Christina R. Riesselman,Leonardo Sagnotti,Douglas R. Schmitt,Charlotte Sjunneskog,P. Strong,Marco Taviani,S. W. Vogel,T. I. Wilch,Trevor Williams +60 more
TL;DR: A marine glacial record from the upper 600 m of the AND-1B sediment core recovered from beneath the northwest part of the Ross ice shelf is presented and well-dated, ∼40-kyr cyclic variations in ice-sheet extent linked to cycles in insolation influenced by changes in the Earth’s axial tilt (obliquity) during the Pliocene are demonstrated.
Journal ArticleDOI
Glacimarine processes at grounding-line fans and their growth to ice-contact deltas
TL;DR: A grounding line fans originate from subglacial and basal stream tunnels at grounding lines of glaciers terminating in a marine environment as discussed by the authors, and during melt seasons discharge forms a turbulent jet beyond the efflux.
Journal ArticleDOI
Orbitally induced oscillations in the East Antarctic ice sheet at the Oligocene/Miocene boundary
Tim R Naish,Ken J. Woolfe,Peter Barrett,Gary S. Wilson,C. Atkins,Steven M Bohaty,C. Bücker,M. Claps,Fred Davey,Gavin B. Dunbar,Gavin B. Dunbar,Alistair Dunn,Christopher R. Fielding,Fabio Florindo,Fabio Florindo,M. J. Hannah,David M. Harwood,Stuart Henrys,Lawrence A. Krissek,M. Lavelle,Jaap J.M. van der Meer,Jaap J.M. van der Meer,William C. McIntosh,Frank Niessen,Sandra Passchier,Ross D. Powell,Andrew P. Roberts,Leonardo Sagnotti,Reed P. Scherer,C Percy Strong,Franco M Talarico,Kenneth L. Verosub,Giuliana Villa,David K. Watkins,P.N. Webb,Thomas Wonik +35 more
TL;DR: Sediment data from shallow marine cores in the western Ross Sea are presented that exhibit well dated cyclic variations, and which link the extent of the East Antarctic ice sheet directly to orbital cycles during the Oligocene/Miocene transition, suggesting that orbital influences at the frequencies of obliquity and eccentricity controlled the oscillations of the ice margin at that time.
Journal ArticleDOI
Glacimarine processes and inductive lithofacies modelling of ice shelf and tidewater glacier sediments based on quaternary examples
TL;DR: In this article, the authors used information from Holocene sediment and Pleistocene glacimarine sequences with the eight inductive regimes to predict and modelled the lithofacies relationships.
Journal ArticleDOI
Glacimarine sedimentary processes, facies and morphology of the south-southeast Alaska shelf and fjords
Ross D. Powell,Bruce F. Molnia +1 more
TL;DR: In this paper, high basal debris loads up to 1.5 m thick of pure debris and rapid glacial flow, which can be more than 3000 m a−1, combine to produce large volumes of siliciclastic glacimarine sediment at some of the highest sediment accumulation rates on record.