Prepared in cooperation with the British Antarctic Survey, Scott Polar Research Institute, and Bundesamt für Kartographie und Geodäsie Coastal-Change and Glaciological Map of the Trinity Peninsula Area and South Shetland Islands, Antarctica: 1843–2001 By Jane G. Ferrigno, Alison J. Cook, Kevin M. Foley, Richard S. Williams, Jr., Charles Swithinbank, Adrian J. Fox, Janet W. Thomson, and Jörn Sievers Pamphlet to accompany Geologic Investigations Series Map I–2600–A 2006 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior Dirk Kempthorne, Secretary U.S. Geological Survey P. Patrick Leahy, Acting Director U.S. Geological Survey, Reston, Virginia: 2006 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., Foley, K.M., Williams, R.S., Jr., Swithinbank, Charles, Fox, A.J., Thomson, J.W., and Sievers, Jörn, 2006, Coastal-change and glaciological map of the Trinity Peninsula area and South Shetland Islands, Antarc- tica—1843–2001: U.S. Geological Survey Geologic Investigations Series Map I–2600–A, 1 map sheet, 32-p. text. ISBN 0–607–96442–1 Printed on recycled paper iii Contents Introduction.....................................................................................................................................................1 Background ...........................................................................................................................................1 Objectives...............................................................................................................................................1 Sources...................................................................................................................................................2 Analytical and Other Methodologies Used for Each Data Source ...............................................2 IfAG Mosaic ..................................................................................................................................3 Landsat Images and Overlays ...................................................................................................3 Landsat 7 ETM+ Images .............................................................................................................3 Vertical Aerial Photographs .......................................................................................................3 Oblique Aerial Photographs .......................................................................................................3 Maps, Manuscripts, and Publications .....................................................................................3 Corona Satellite Photograph ......................................................................................................4 European Remote-Sensing (ERS) SAR Images .......................................................................4 Kosmos KATE-200 Photographic Mosaic .................................................................................4 RADARSAT Images ......................................................................................................................4 Coastline Accuracies ...........................................................................................................................4 Glaciological Features ..................................................................................................................................4 Glacier Inventory............................................................................................................................................5 Analysis ...........................................................................................................................................................5 Overview.................................................................................................................................................5 Methodologies Used in Coastal-Change Analysis .........................................................................6 Coastal Change .....................................................................................................................................7 James Ross Island .......................................................................................................................8 King George Island ......................................................................................................................8 Duse Bay and Eyrie Bay ...........................................................................................................11 Outlet-Glacier, Ice-Stream, and Ice-Shelf Velocities ...................................................................15 Map Revisions and Comparisons .....................................................................................................15 Summary........................................................................................................................................................16 Acknowledgments .......................................................................................................................................16 References Cited..........................................................................................................................................16 Appendix—Tables 1A, 1B, 2, 3, 4A, 4B, and 9 ..........................................................................................21 Figures 1. Index map of the planned 23 coastal-change and glaciological maps of Antarctica ......2 2. Sample lines drawn for analysis of ice-front change in the Prince Gustav Channel region of the Trinity Peninsula ....................................................................................................6 3. Enlargement of the northern Admiralty Bay area, King George Island .............................12 4. Enlargement of the Duse Bay and Eyrie Bay area, Trinity Peninsula ................................13 iv Tables 1A. Aerial photographs used in analysis of ice-front change for the coastal-change and glaciological map of the Trinity Peninsula area and South Shetland Islands. .........22 1B. Landsat images used in analysis of ice-front change for the coastal-change and glaciological map of the Trinity Peninsula area and South Shetland Islands. .................22 2. Maps used as source materials for the coastal-change and glaciological map of the Trinity Peninsula area and South Shetland Islands. ......................................................23 3. Manuscripts in the British Antarctic Survey (BAS) Archives used as source materials for the coastal-change and glaciological map of the Trinity Peninsula area and South Shetland Islands. ............................................................................................27 4A. Inventory of named glaciers and glaciological features on the coastal-change and glaciological map of the Trinity Peninsula area and South Shetland Islands. .................27 4B. Inventory of unnamed glaciers and ice fronts for which measurements of advance and retreat were made on the coastal-change and glaciological map of the Trinity Peninsula area and South Shetland Islands. .........................................................................30 5. Source materials for coastal-change measurements of James Ross Island. ...................9 6. Average annual change of ice fronts on James Ross Island calculated for the time intervals between years when measurements were made. .................................................9 7A. Average annual change of ice fronts on King George Island calculated for the time intervals between years when measurements were made. ...............................................10 7B. Source materials for coastal-change measurements of King George Island ..................11 8A. Average annual change of ice fronts in the Duse Bay and Eyrie Bay area, Trinity Peninsula, calculated for the time intervals between years when measurements were made. ..................................................................................................................................14 8B. Source materials for coastal-change measurements in the Duse Bay and Eyrie Bay area, Trinity Peninsula........................................................................................................15 9. Coastal-change and glaciological maps of Antarctica at 1:1,000,000 scale, published to date. .......................................................................................................................32 Conversion Factors Multiply By To obtain Length meter (m) 3.281 foot (ft) kilometer (km) 0.6214 mile (mi) Area square kilometer (km2) 0.3861 square mile (mi2) Coastal-Change and Glaciological Map of the Trinity Peninsula Area and South Shetland Islands, Antarctica: 1843–2001 By Jane G. Ferrigno,1 Alison J. Cook,2 Kevin M. Foley,1 Richard S. Williams, Jr.,3