2017 Annual Report to the Vice President for Research I
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Coastal-Change and Glaciological Map of the Palmer Land Area, Antarctica: 1947–2009
Prepared in cooperation with the British Antarctic Survey, the Scott Polar Research Institute, and the Bundesamt für Kartographie und Geodäsie Coastal-Change and Glaciological Map of the Palmer Land Area, Antarctica: 1947–2009 By Jane G. Ferrigno, Alison J. Cook, Amy M. Mathie, Richard S. Williams, Jr., Charles Swithinbank, Kevin M. Foley, Adrian J. Fox, Janet W. Thomson, and Jörn Sievers Pamphlet to accompany Geologic Investigations Series Map I–2600–C 2009 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior KEN SALAZAR, Secretary U.S. Geological Survey Marcia K. McNutt, Director U.S. Geological Survey, Reston, Virginia: 2009 For product and ordering information: World Wide Web: http://www.usgs.gov/pubprod Telephone: 1-888-ASK-USGS For more information on the USGS--the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment: World Wide Web: http://www.usgs.gov Telephone: 1-888-ASK-USGS Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. Suggested citation: Ferrigno, J.G., Cook, A.J., Mathie, A.M., Williams, R.S., Jr., Swithinbank, Charles, Foley, K.M., Fox, A.J., Thomson, J.W., and Sievers, Jörn, 2009, Coastal-change and glaciological map of the Palmer Land area, Antarctica: 1947–2009: U.S. Geological Survey Geologic Investigations Series Map I–2600–C, 1 map sheet, 28-p. -
APC(18)1St Meeting ANTARCTIC PLACE-NAMES COMMITTEE
APC(18)1st Meeting ANTARCTIC PLACE-NAMES COMMITTEE MINUTES – MEETING Thursday 10th MAY 2018 AT 11:00 AM. DRAFT Present: Mrs Philippa Foster-Back Chair Dr Adrian Fox British Antarctic Survey (Secretary) Ms Elena Field Observer/Minutes Dr Mark Brandon Ad hoc Member Mrs Catherine Cheetham PCGN Dr Alistair Crame British Antarctic Survey Mr Stuart Doubleday Polar Regions Department, FCO Prof. Julian Dowdeswell Scott Polar Research Institute Dame, Prof. Jane Francis British Antarctic Survey Mr Robert Headland Royal Geographic Society Mrs Rachel Morgan Ad hoc Member Ms Camilla Nichol UK Antarctic Heritage Trust Ms Jane Rumble Polar Regions Department, FCO Dr Mike Thomson Expert Member 1. Apologies for absence: Apologies for absence were received from Suman Chowdhury, Andy Willett, and Paul Woodman. The absentees sent comments in advance. 2. Place name decisions [APC(17)24] and matters arising from ACP(17) 2nd meeting SGSSI place names from previous APC meetings. Jane Rumble suggested that the SGSSI government would benefit from a definitive list of place names which need confirmation to aid review of the names by Commissioner Nigel Phillips. Action Points • Secretary to gather information and pass on to Government of South Georgia. The Secretary had sent all this material previously, but since the meeting collated for the Government of South Georgia the papers and maps from the APC meetings going back to November 2016, together with the pro forma papers for Commissioner of SG signoff, and an Excel spreadsheet that summarises all this and relates the recommended name to the proposal number. Prior to November 2016 any SG names that have been through the APC process should be up-to- date in the gazetteer and web-map. -
Subglacial Topography and Ice Flux Along the English Coast Of
1 Subglacial topography and ice flux along the English Coast of 2 Palmer Land, Antarctic Peninsula 3 4 Kate Winter1, Emily A. Hill1, G. Hilmar Gudmundsson1, John Woodward1 5 1Department of Geography and Environmental Sciences, Faculty of Engineering and Environment, Northumbria 6 University, Newcastle upon Tyne, UK 7 Correspondence to: Kate Winter ([email protected]) 8 9 Abstract. Recent satellite data have revealed widespread grounding line retreat, glacier thinning, and associated 10 mass loss along the Bellingshausen Sea sector, leading to increased concern for the stability of this region of 11 Antarctica. While satellites have greatly improved our understanding of surface conditions, a lack of radio-echo 12 sounding (RES) data in this region has restricted our analysis of subglacial topography, ice thickness and ice flux. 13 In this paper we analyse 3,000 km of 150 MHz airborne RES data collected using the PASIN2 radar system (flown 14 at 3 – 5 km line spacing) to investigate the subglacial controls on ice flow near to the grounding lines of Ers, 15 Envisat, Cryosat, Grace, Sentinel, Lidke and Landsat ice streams as well as Hall and Nikitin glaciers. We find that 16 each outlet is topographically controlled, and when ice thickness is combined with surface velocity data from 17 MEaSUREs (Mouiginot et al., 2019), these outlets are found to discharge over 39.25 ± 0.79 Gt a-1 of ice to floating 18 ice shelves and the Southern Ocean. Our RES measurements reveal that outlet flows are grounded more than 300 19 m below sea level, and that there is limited topographic support for inland grounding line re-stabilisation in a 20 future retreating scenario, with several ice stream beds dipping inland at ~5 degrees per km.