Items where NERC Author is "Nicholls, Keith"

Publication - Article

Arthun, Marius; Nicholls, Keith W.; Boehme, Lars. 2013 Wintertime water mass modification near an Antarctic ice front. Journal of Physical Oceanography, 43 (2). 359-365. 10.1175/JPO-D-12-0186.1

Makinson, Keith; King, Matt A.; Nicholls, Keith W.; Gudmundsson, G. Hilmar. 2012 Diurnal and semidiurnal tide-induced lateral movement of Ronne Ice Shelf, Antarctica. Geophysical Research Letters, 39, L10501. 5, pp. 10.1029/2012GL051636

Fer, Ilker; Makinson, Keith; Nicholls, Keith W.. 2012 Observations of Thermohaline Convection adjacent to Brunt Ice Shelf. Journal of Physical Oceanography, 42 (3). 502-508. 10.1175/JPO-D-11-0211.1

Nicholls, Keith W.; Makinson, Keith; Venables, Emily. 2012 Ocean circulation beneath Larsen C Ice Shelf, Antarctica from in situ observations. Geophysical Research Letters, 39, L19608. 6, pp. 10.1029/2012GL053187

Nicholls, K.W.; Corr, H.F.J.; Makinson, K.; Pudsey, C.J.. 2012 Rock debris in an Antarctic ice shelf. Annals of Glaciology, 53 (60). 235-240. 10.3189/2012AoG60A014

Årthun, Marius; Nicholls, Keith W.; Makinson, Keith; Fedak, Michael A.; Boehme, Lars. 2012 Seasonal inflow of warm water onto the southern Weddell Sea continental shelf, Antarctica. Geophysical Research Letters, 39 (L17601). 6, pp. 10.1029/2012GL052856

Makinson, Keith; Holland, Paul R.; Jenkins, Adrian; Nicholls, Keith W.; Holland, David M.. 2011 Influence of tides on melting and freezing beneath Filchner-Ronne Ice Shelf, Antarctica. Geophysical Research Letters, 38 (6), L06601. 6, pp. 10.1029/2010GL046462

King, Matt A.; Padman, Laurie; Nicholls, Keith; Clarke, Peter J.; Gudmundsson, G. Hilmar; Kulessa, Bernd; Shepherd, Andrew. 2011 Ocean tides in the Weddell Sea: New observations on the Filchner-Ronne and Larsen C ice shelves and model validation. Journal of Geophysical Research, 116 (C6), C06006. 18, pp. 10.1029/2011JC006949

Meredith, Michael P.; Nicholls, Keith W.; Renfrew, Ian A.; Boehme, Lars; Biuw, Martin; Fedak, Mike. 2011 Seasonal evolution of the upper-ocean adjacent to the South Orkney Islands, Southern Ocean: results from a "lazy biological mooring". Deep Sea Research II, 58 (13-16). 1569-1579. 10.1016/j.dsr2.2009.07.008

Jenkins, Adrian; Nicholls, Keith W.; Corr, Hugh F.J.. 2010 Observation and parameterization of ablation at the base of Ronne Ice Shelf, Antarctica. Journal of Physical Oceanography, 40 (10). 2298-2312. 10.1175/2010JPO4317.1

Walkden, Graham J.; Heywood, Karen J.; Nicholls, Keith W.; Abrahamsen, Povl. 2009 Freshwater transport at Fimbulisen, Antarctica. Journal of Geophysical Research, 114 (C08), C08014. 16, pp. 10.1029/2008JC005028

Nicholls, Keith W.; Østerhus, Svein; Makinson, Keith; Gammelsrød, Tor; Fahrbach, Eberhard. 2009 Ice-ocean processes over the continental shelf of the southern Weddell Sea, Antarctica: a review. Reviews of Geophysics, 47 (3), RG3003. 23, pp. 10.1029/2007RG000250

Barrett, B.E.; Nicholls, K.W.; Murray, T.; Smith, A.M.; Vaughan, D.G.. 2009 Rapid recent warming on Rutford Ice Stream, West Antarctica, from borehole thermometry. Geophysical Research Letters, 36, L02708. 5, pp. 10.1029/2008GL036369

Dowdeswell, J.A.; Evans, J.; Mugford, R.; Griffiths, G.; McPhail, S.; Millard, N.; Stevenson, P.; Brandon, M.A.; Banks, C.; Heywood, K.J.; Price, M.R.; Dodd, P.A.; Jenkins, A.; Nicholls, K.W.; Hayes, D.; Abrahamsen, E.P.; Tyler, P.; Bett, B.; Jones, D.; Wadhams, P.; Wilkinson, J.P.; Stansfield, K.; Ackley, S.. 2008 Autonomous underwater vehicles (AUVs) and investigations of the ice–ocean interface in Antarctic and Arctic waters. Journal of Glaciology, 54 (187). 661-672. 10.3189/002214308786570773

Nicholls, Keith W.; Abrahamsen, E. Povl; Heywood, Karen J.; Stansfield, Kate; Osterhus, Svein. 2008 High-latitude oceanography using the Autosub autonomous underwater vehicle. Limnology and Oceanography, 53 (5, Pt.). 2309-2320.

Price, M.R.; Heywood, K.J.; Nicholls, K.W.. 2008 Ice-shelf – ocean interactions at Fimbul Ice Shelf, Antarctica from oxygen isotope ratio measurements. Ocean Science, 4 (1). 89-98.

Adalgeirsdóttir, G.; Smith, Andy M.; Murray, T.; King, M.A.; Makinson, Keith; Nicholls, Keith W.; Behar, A.E.. 2008 Tidal influence on Rutford Ice Stream, West Antarctica: observations of surface flow and basal processes from closely-spaced GPS and passive seismic stations. Journal of Glaciology, 54 (187). 715-724. 10.3189/002214308786570872

Nicholls, Keith; Boehme, Lars; Biuw, Martin; Fedak, Mike A.. 2008 Wintertime ocean conditions over the southern Weddell Sea continental shelf, Antarctica. Geophysical Research Letters, 35, L21605. 5, pp. 10.1029/2008GL035742

Makinson, K.; Nicholls, K.W.; Abrahamsen, E.P.. 2007 Oceanographic processes near the Filchner Sill - plans for fieldwork in 2007. Forum for Research into Ice Shelf Processes (FRISP). Report, 17. 42-47.

Smith, A.M.; Murray, T.; Nicholls, K.W.; Makinson, K.; Adalgeirsdottir, G.; Behar, A.; Vaughan, D.G.. 2007 Rapid erosion, drumlin formation, and changing hydrology beneath an Antarctic ice stream. Geology, 35 (2). 127-130. doi: 10.1130/G23036A.1

Silva, T.A.M.; Bigg, G.R.; Nicholls, K.W.. 2006 Contribution of giant icebergs to the Southern Ocean freshwater flux. Journal of Geophysical Research, 111 (C3), C03004. 8, pp. 10.1029/2004JC002843

Corr, H.; Doake, C.S.M.; Jenkins, A.; Nicholls, K.W.. 2006 Direct measurements of ice-shelf bottom melting rates by phase sensitive radar. Forum for Research into Ice Shelf Processes (FRISP) Report, 14. 7-9.

Jenkins, Adrian; Corr, Hugh F.J.; Nicholls, Keith W.; Stewart, Craig L.; Doake, Christopher S.M.. 2006 Interactions between ice and ocean observed with phase-sensitive radar near an Antarctic ice-shelf grounding line. Journal of Glaciology, 52 (178). 325-346.

Nicholls, Keith; Østerhus, Svein. 2006 Interannual variability beneath Filchner-Ronne Ice Shelf, Antarctica. Forum for Research into Ice Shelf Processes (FRISP). Report (14). 102-107.

Doake, C.S.M.; Corr, H.F.J.; Jenkins, A.; Nicholls, K.W.; Stewart, C.. 2006 Interpretation of polarimetric ice penetrating radar data over Antarctic ice shelves. Forum for Research into Ice Shelf Processes (FRISP). Report, 14. 135-148.

Nicholls, K.W.; Abrahamsen, E.P.; Buck, J.J.H.; and 19 others, .. 2006 Measurements beneath an Antarctic ice shelf using an autonomous underwater vehicle. Geophysical Research Letters, 33 (8), L08612. 4, pp. doi 10.1029/2006GL025998

Jenkins, Adrian; Corr, Hugh; Nicholls, Keith; Doake, Chris; Stewart, Craig. 2006 Measuring the basal melt rate of Antarctic ice shelves using GPS and phase-sensitive radar observations. Forum for Research into Ice Shelf Processes (FRISP). Report, 14. 149-156.

Jenkins, Adrian; Holland, David M.; Nicholls, Keith W.. 2006 Oceanographic conditions beneath Ronne Ice Shelf: a comparison between model and field data. Forum for Research into Ice Shelf Processes (FRISP). Report, 14. 28-33.

Fahrbach, E.; Harms, S.; Hellmer, H.; Jenkins, A.; Nicholls, K.W.; Østerhus, S.; Padman, L.; Rohardt, G.; Schröder, M.; Woodgate, R.A.. 2006 The fieldwork during the "Polarstern" cruise ANT XVI/2 as a contribution to the study of bottom water formation and sea ice transport in the Weddell Sea. Forum for Research into Ice Shelf Processes (FRISP). Report, 14. 18-27.

Nicholls, Keith W.; Makinson, Keith; Østerhus, Svein. 2004 Circulation and water masses beneath the northern Ronne Ice Shelf, Antarctica. Journal of Geophysical Research, 109 (C12), C12017. 11, pp. 10.1029/2003JC002149

Nicholls, K.W.; Østerhus, S.. 2004 Interannual variability and ventilation timescales in the ocean cavity beneath Filchner-Ronne Ice Shelf, Antarctica. Journal of Geophysical Research, 109 (C4), C04014. 9, pp. 10.1029/2003JC002149

Nicholls, Keith; Makinson, Keith; Østerhus, Svein. 2004 Ronne inflow experiment - fieldwork. Forum for Research into Ice Shelf Processes (FRISP) Report, 15. 37-42.

Jenkins, Adrian; Holland, David M.; Nicholls, Keith W.; Schröder, Michael; Østerhus, Svein. 2004 Seasonal ventilation of the cavity beneath Filchner-Ronne Ice Shelf simulated with an isopycnic coordinate ocean model. Journal of Geophysical Research, 109 (C1), C01024. 12, pp. 10.1029/2001JC001086

Nicholls, K.W.; Pudsey, C.J.; Morris, P.. 2004 Summertime water masses off the northern Larsen C Ice Shelf, Antarctica. Geophysical Research Letters, 31 (9), L09309. 4, pp. 10.1029/2004GL019924

Nicholls, K.W.; Padman, L.; Schröder, M.; Woodgate, R.A.; Jenkins, A.; Østerhus, S.. 2003 Water mass modification over the continental shelf north of Ronne Ice Shelf, Antarctica. Journal of Geophysical Research, 108 (C8), 3260. 15, pp. 10.1029/2002JC001713

Corr, Hugh F. J.; Jenkins, Adrian; Nicholls, Keith W.; Doake, C.S.M. 2002 Precise measurement of changes in ice-shelf thickness by phase-sensitive radar to determine basal melt rates. Geophysical Research Letters, 29 (8), 1232. 4, pp. 10.1029/2001GL014618

Doake, C.S.M.; Corr, H.F.J.; Nicholls, K.W.; Gaffikin, A.; Jenkins, A.; Bertiger, W.I.; King, M.A.. 2002 Tide-induced lateral movement of Brunt Ice Shelf, Antarctica. Geophysical Research Letters, 29 (8), 1226. 4, pp. 10.1029/2001GL014606

Nicholls, K.W.; Østerhus, S.; Makinson, K.; Johnson, M.R.. 2001 Oceanographic conditions south of Berkner Island, beneath Filchner-Ronne Ice Shelf, Antarctica. Journal of Geophysical Research, 106 (C6). 11,481-11,492. 10.1029/2000JC000350

Publication - Book Section

Boehme, Lars; Kovacs, K.; Lydersen, C.; Nøst, O.A.; Biuw, Martin; Charrassin, J.-B.; Roquet, F.; Guinet, C.; Meredith, Michael; Nicholls, Keith; Thorpe, Sally; Costa, D.P.; Block, B.; Hammill, M.; Stenson, G.; Muelbert, M.; Bester, M.N.; Plötz, J.; Bornemann, H.; Hindell, M.; Rintoul, S.; Lovell, P.; Fedak, M.A.. 2010 Biologging in the global ocean observing system. In: Hall, J.; Harrison, D.E.; Stammer, D., (eds.) Proceedings of Ocean Obs 09: Sustained ocean observations and information for society. Venice, Italy, European Space Agency, 9pp. (ESA Publication, WPP-306, Vol. 2).

Charrassin, J.-B.; Roquet, F.; Park, Y.-H.; Bailleul, F.; Guinet, C.; Meredith, Michael M.; Nicholls, Keith; Thorpe, Sally; McDonald, B.; Costa, D.P.; Tremblay, I.; Goebel, M.; Muelbert, M.; Bester, M.N.; Plötz, J.; Bornemann, H.; Timmermann, R.; Hindell, M.; Meijers, A.; Coleman, R.C.; Field, I.C.; McMahon, C.M.; Rintoul, S.R.; Sokolov, S.; Boehme, Lars; Lovell, P.; Fedak, M.A.; Biuw, Martin; Nøst, O.A.; Lydersen, C.; Kovacs, K.M.. 2010 New insights into Southern Ocean physical and biological processes revealed by instrumented elephant seals. In: Hall, J.; Harrison, D.E.; Stammer, D., (eds.) Proceedings of OceanObs '09:Sustained ocean observations and information for society. Venice, Italy, European Space Agency, 9pp. (ESA Publication, WPP-306, Vol. 2).

Boehme, Lars; Biuw, Martin; Fedak, Mike; Nicholls, Keith; Thorpe, Sally; Meredith, Mike. 2008 Animals as exploratory underwater vehicles. In: Collins, K.; Griffiths, G., (eds.) Workshop on AUV science in extreme environments: collaborative Autosub science in extreme environments. Proceedings of the International Science Workshop, Cambridge, 11-13 April 2007. London, Society for Underwater Technology, 55-62.

Doake, C.S.M.; Corr, H.F.J.; Jenkins, A.; Nicholls, K.W.; Stewart, C.. 2003 Interpretation of polarisation behaviour of radar waves transmitted though Antarctic ice shelves. In: Lacoste, H., (ed.) Proceedings of the Workshop on POLinSAR - Applications of SAR Polarimetry and Polarimetric Interferometry Proceedings of the Workshop on POLinSAR - Applications of SAR Polarimetry and Polarimetric Interferometry. 14-16 January 2003, Frascati, Italy. European Space Agency, 8pp. (ESA-SP, 259).

Doake, C.S.M.; Corr, H.F.J.; Jenkins, A.; Makinson, K.; Nicholls, K.W.; Nath, C.; Smith, A.M.; Vaughan, D.G.. 2001 Rutford Ice Stream, Antarctica. In: Alley, R.B.; Bindschadler, R.A., (eds.) The West Antarctic ice sheet: behavior and environment. Washington, D.C., American Geophysical Union, 221-235. (Antarctic Research Series, 77).

Key Findings

Arthun, Marius; Nicholls, Keith. Seal-derived, wintertime CTD data reveal strong seasonality in shelf conditions north of Filchner Ice Shelf. [Key Findings]

Nicholls, Keith; Venables, Emily; Makinson, Keith. The thinning of Larsen C Ice Shelf results from enhanced atmospheric-driven melting, not from enhanced ocean-driven melting. [Key Findings]