Results 111 to 120 of about 3,652,727 (274)

Uneven onset and pace of ice‐dynamical imbalance in the Amundsen Sea Embayment, West Antarctica

, 2017
We combine measurements acquired by five satellite altimeter missions to obtain an uninterrupted record of ice sheet elevation change over the Amundsen Sea Embayment, West Antarctica, since 1992. Using these data, we examine the onset of surface lowering
H. Konrad, Lin Gilbert, S. Cornford, A. Payne, A. Hogg, A. Muir, A. Shepherd   +6 more
semanticscholar   +1 more source

Distribution and ecology of the four Macrourus species by‐caught in the longline fishery at South Georgia, Southern Ocean

Journal of Fish Biology, EarlyView.
Abstract Although Macrourus species are the main by‐catch across Southern Ocean longline fisheries, including around South Georgia, the lack of species‐specific data has hindered effective management and ecological understanding. Aggregation of macrourids at genus level masks critical interspecific differences in life‐history strategies and ...
José Abreu, Philip R. Hollyman, Jennifer J. Freer, M. L. Romero Martínez, José P. Queirós, Timothy Jones, Richard A. Phillips, José C. Xavier, Martin A. Collins   +8 more
wiley   +1 more source

Scientific evaluation of deterioration of historic huts of Ross Island, Antarctica [PDF]

, 2007
There are many challenges facing conservation of the historic huts in Antarctica including non-biological, biological and environmental impacts explains Professor Roberta L. Farrell, Department of Biological Sciences, the University of Waikato.
Farrell, Roberta L.
core  

Recent increase in surface melting of West Antarctic ice shelves linked to Interdecadal Pacific Oscillation

Communications Earth & Environment
Since the late 1990s, summer surface melt across ice shelves in the Ross-Amundsen Sea sector of West Antarctica increased significantly, as demonstrated by satellite measurements and MetUM simulations. This contrasts with the period from 1979 to the late
Pranab Deb, David Bromwich, Andrew Orr, Arnab Sen, Kyle R. Clem   +4 more
doaj   +1 more source

Bedmap3 updated ice bed, surface and thickness gridded datasets for Antarctica

Scientific Data
We present Bedmap3, the latest suite of gridded products describing surface elevation, ice-thickness and the seafloor and subglacial bed elevation of the Antarctic south of 60 °S.
H. Pritchard, P. Fretwell, A. Frémand, Julien A. Bodart, J. D. Kirkham, Alan Aitken, J. Bamber, Robin E. Bell, C. Bianchi, R. Bingham, D. Blankenship, G. Casassa, K. Christianson, Howard Conway, H. Corr, Xiangbin Cui, D. Damaske, V. Damm, B. Dorschel, R. Drews, G. Eagles, O. Eisen, H. Eisermann, F. Ferraccioli, Elena Field, R. Forsberg, S. Franke, Vikram Goel, S. Gogineni, J. Greenbaum, B. Hills, R. Hindmarsh, A. Hoffman, Nicholas Holschuh, J. W. Holt, Angelika Humbert, R. Jacobel, D. Jansen, A. Jenkins, W. Jokat, L. Jong, T. Jordan, E. King, J. Kohler, William Krabill, J. Maton, M. Gillespie, K. Langley, Joo-Hong Lee, German L. Leitchenkov, C. Leuschen, B. Luyendyk, J. A. MacGregor, E. Mackie, G. Moholdt, Kenichi Matsuoka, M. Morlighem, J. Mouginot, F. Nitsche, O. Nøst, J. Paden, F. Pattyn, S. Popov, E. Rignot, D. Rippin, A. Rivera, J. Roberts, N. Ross, A. Ruppel, D. Schroeder, M. Siegert, A. Smith, D. Steinhage, M. Studinger, Bo Sun, I. Tabacco, K. Tinto, S. Urbini, D. Vaughan, D. S. Wilson, D. Young, A. Zirizzotti   +81 more
semanticscholar   +1 more source

Geochemical fingerprints of glacially eroded bedrock from West Antarctica: Detrital thermochronology, radiogenic isotope systematics and trace element geochemistry in Late Holocene glacial-marine sediments

Earth-Science Reviews, 2018
Geochemical provenance studies of glacial-marine sediments provide a powerful approach to describe subglacial geology, sediment transport pathways, and past ice sheet dynamics.
Patric Simões Pereira, T. van de Flierdt, S. Hemming, S. Hammond, G. Kuhn, S. Brachfeld, Cathleen Doherty, C. Hillenbrand   +7 more
semanticscholar   +1 more source

Investigating the association between weather variables and Aedes albopictus abundance in Windsor, Ontario

Medical and Veterinary Entomology, EarlyView.
Trapping completed by Windsor‐Essex County Health Unit. Data analysis using trap and weather data. Canadian weather thresholds are associated with increased mosquito abundance. Abstract Aedes albopictus (Diptera: Culicidae) is notorious for transmitting several pathogens of public health importance.
Keana Shahin, Katie M. Clow, Olaf Berke, Ilaria Dorigatti, Victoria Ng   +4 more
wiley   +1 more source

Perennially ice‐covered lake facies as proxies for ice cover properties and climate: Insights from Lake Joyce, Antarctica

Sedimentology, EarlyView.
ABSTRACT Process‐based depositional models for perennially ice‐covered lakes (PICLs) are important for interpreting palaeolake deposits and their connection to past climate. PICLs are only stable under specific climate states, and unlike other ice‐free or seasonally ice‐covered lakes, PICL deposits generally have bimodal grain sizes: mud introduced by ...
Frances Rivera‐Hernández, Dawn Y. Sumner, Tyler J. Mackey   +2 more
wiley   +1 more source

Radar-derived bed roughness characterization of Institute and Möller ice streams, West Antarctica, and comparison with Siple Coast ice streams [PDF]

, 2007
Subglacial bed conditions exert a significant control on ice stream behavior and evolution, and can be characterized by determining bed roughness from FFT analysis of radar-imaged basal reflectors. Here we assess bed roughness across Institute and Moller
Siegert, Martin J., Bingham, Robert G.
core   +2 more sources

Airborne radar evidence for tributary flow switching in Institute Ice Stream, West Antarctica: implications for ice sheet configuration and dynamics [PDF]

, 2015
Despite the importance of ice streaming to the evaluation of West Antarctic Ice Sheet (WAIS) stability we know little about mid- to long-term dynamic changes within the Institute Ice Stream (IIS) catchment.
Martin J. Siegert, Hugh F. J. Corr, Corr, Hugh, Bingham, RG, Woodward, John, Ross, Neil, Ross, N, Dunning, SA, Corr, Hugh F.J., Winter, K, Siegert, MJ, Robert G. Bingham, Winter, Kate, Dunning, Stuart, John Woodward, Neil Ross, Siegert, Martin, Corr, HFJ, Kate Winter, Dunning, Stuart A., Siegert, Martin J., Stuart A. Dunning, Bingham, Robert G., Woodward, J   +23 more
core   +1 more source