United States Antarctic Resource Center United States Geological Survey 2007 SDE raster digital data The data obtained through The National Map Seamless Server is considered to be the "best available" data from USGS. Historical data and other data may be obtained by contacting Customer Services, Center for Earth Resources Observation & Science, at 1-800-252-4547. http://seamless.usgs.gov http://lima.usgs.gov Processed Landsat Scenes (16 bit - single band) are terrain corrected to Level 1T (NLAPS), processed with sun-angle correction, and available in a GeoTIFF format. The LIMA team processed each Landsat scene with elevation data and sun-angle correction to ensure surface features were accurately represented. The sun's angle in Antarctica gives the appearance of a setting sun. Because of the low sun angle, as Landsat passes over Antarctica, the outer edges of the continent appear brighter than areas closer to the South Pole, so scenes have bright and dark areas. The team corrected for these inconsistent sun angles and shadows. Without this process, mosaicking would produce a patchwork of scenes since each scene would have a brighter and a darker side. Landsat data have a wide range of uses such as earthquake hazard studies, hydrologic modeling, forestry, coastal engineering, roadway and pipeline engineering, flood plain mapping, wetland studies, geologic studies and a variety of analytical and cartographic projects. The link below contains a list of all Landsat scenes used in this project. http://lima.usgs.gov "Download Mosaics and Landsat Scenes" Scenes within this particular layer can be determined by going to the website. There are 17 lines of information for each of the 1073 images in this project. The 17 lines are: 1) sceneid 2) path row month day year hour minute second percent_cloud 3) latitude longitude sun_elevation sun_azimuth at scene center 4) latitude longitude sun_elevation sun_azimuth at scene UL corner 5) latitude longitude sun_elevation sun_azimuth at scene UR corner 6) latitude longitude sun_elevation sun_azimuth at scene LR corner 7) latitude longitude sun_elevation sun_azimuth at scene LL corner 8) gain and bias for band 1 9) gain and bias for band 2 10) gain and bias for band 3 11) gain and bias for band 4 12) gain and bias for band 5 13) gain and bias for band 7 14) gain and bias for band 8 15) earth-sun distance 16) normalization factors for bands 1 2 3 4 8 17) color balance adjustment for bands 1 2 3 4 - negative latitudes are South - negative longitudes are West - all information needed to reproduce the calculations can be found on the website. Example image: 1) LE7001108000035450 2) 1 108 12 19 2000 14 40 15 50 3) -68.2788 -90.5018 36.06 60.07 4) -67.1849 -87.5951 37.57 57.66 5) -69.3366 -87.3383 36.47 56.02 6) -69.3159 -93.7157 34.54 62.82 7) -67.1663 -93.3576 35.63 63.79 8) 0.7787400 -6.9787300 9) 0.7988190 -7.1988200 10) 0.6216530 -5.6216400 11) 0.6397640 -5.7397600 12) 0.1262200 -1.1262200 13) 0.0438976 -0.3938980 14) 0.9755910 -5.6756000 15) 0.983987 16) 1.581465 1.634131 1.575570 1.706150 1.495761 17) 1.000000 1.000000 1.000000 1.000000 1999 2002 ground condition Complete As needed 37.9053042230675 43.6306834989909 -74.5269044579849 -77.2851363871435 None digital spatial data U.S. Geological Survey USGS GIS Earth science imagery infrared wavelengths satellite radiance thematic mapper Landsat remote sensing infrared imagery emissivity CIR Polar Stereographic Landsat Image Mosaic of Antarctica LIMA processed 16 bit ISO 19115 Category imageryBaseMapsEarthCover 010 geoscientificInformation 008 location 013 American Society of Photogrammetry and Remote Sensing National Standards for Spatial Digital Accuracy (NSSDA) U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard 10-4,): Washington, D.C., National Institute of Standards and Technology Antarctica South Pole none Aitcho Island Alexander Island Amery Ice Shelf Amundsen-Scott South Pole Station Antarctic Peninsula Arctowski Artigas Jubany Belgrano II Brunt Ice Shelf Cape Renard Casey Cuverville Island Dallmann Bay Davis Deception Island Dome Argus Dome Circe Dome Fuji Drake Passage Dronning Maud Land Dumont d'Urville East Antarctica Ellsworth Mtns. Enderby Land Escudero Filchner Ice Shelf Fimbulisen Gerlache Strait George V Land Graham Land Half Moon Island Halley Kemp Land Larsen Ice Shelf Macrobertson Maitri Marambio Mawson McMurdo Mirny Molodezhnaya Mt. Bell Mt. Craddock Mt. Elizabeth Mt. Epperly Mt. Erebus Mt. Gardner Mt. Jackson Mt. Kirkpatrick Mt. Markham Mt. Shinn Mt. Sidley Mt. Tyree Mt. Vinson Neko Harbour Neumayer Novolazarevskaya Oates Land Orcadas Palmer Paradise Harbour Port Lockroy Princess Elizabeth Land Progress Prydz Bay Queen Alexandra Range Queen Elizabeth Range Queen Mary Land Queen Maude Mtns. Ronne-Filchner Ice Shelf Ross Ice Shelf Ross Sea Rothera San Martin SANAE (South African National Antarctic Expedition) Shackleton Ice Shelf South Pole South Shetland Islands Subglacial Lake Vostok Syowa Terre Adelie Transantarctic Mtns. Vernadsky Victoria Land Vinson Massif Vostok Weddel Sea West Antarctica Wilhelm II Land Wilkes Land Zhongshan Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the USGS Standard Disclaimer. Ensure all portions of metadata are read and clearly understood before using these data in order to protect both user and USGS interests. There is no guarantee of warranty concerning the accuracy of the data. Users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data is obligated to describe the types of modifications performed. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer. U.S. Geological Survey Customer Services Representative mailing and physical address

USGS Center for Earth Resources Observation & Science

47914 252nd Street

Sioux Falls SD 57198-0001 USA 605/594-6151 1-800-252-4547 605/594-6933 605/594-6589 custserv@usgs.gov 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT) Dept. of Civil and Environmental Engineering, Ohio State University, Byrd Polar Research Center, Ohio State University, U.S. Antarctic Resource Center, U.S. Geological Survey None Unclassified N/A Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 The Enhanced Thematic Mapper Plus (ETM+) was designed to provide a geometric accuracy of at least 250 meters (1 sigma) in low-relief areas at sea level. Terrain Correction (Level 1T) includes radiometric, geometric, and precision correction, as well as the use of a digital elevation model (DEM) to correct parallax error due to local topographic relief. 0.5 There are three on-board solar calibrators to provide an absolute accuracy of 5 percent. All seamlines and tile edges are visually inspected. This check ensures balanced radiometry, and no VOID areas or anomalies. The L7 Data Quality Team at EROS issues Calibration Parameter Files (CPFs) containing over 15,000 coefficients that describe the radiometric and geometric characteristics of Landsat 7 data. The LIMA team identified 1,073 scenes from more than 8,000 Antarctica scenes taken by the ETM+ sensor since Landsat 7 was launched in 1999. Each Landsat 7 scene is 184 km by 170 km (115 mi by 105 mi). The Landsat ETM+ sensor is a nadir-viewing, eight-band multispectral scanning radiometer that detects spectrally filtered radiation from several portions of the electromagnetic spectrum. The Landsat 7 Enhanced Thematic Mapper Plus (ETM+) sensor includes a 15-meter (m) panchromatic band (band 8), as well as improved resolution (60 m) for the thermal infrared band (band 6). All bands have two gain settings (high and low) for increased radiometric sensitivity and dynamic range, with band 6 acquired in both high and low gain for all scenes. 325 The horizontal distance between the perpendiculars through the LPS calculated "true" WRS Scene Center and the nominal (known) WRS scene center on the ground. Original Landsat Scenes: Original Landsat scenes are processed to Level 1Gt by the National Landsat Archive Processing System (NLAPS). Level 1Gt includes systematic radiometric and geometric correction combined with the use of a Digital Elevation Model (DEM). The LIMA team identified 1,073 scenes from more than 8,000 Antarctica scenes taken by the ETM+ sensor since Landsat 7 was launched in 1999. Each Landsat 7 scene is 184 km by 170 km (115 mi by 105 mi). The selection of scenes began with the identification of all of the available cloud-free Landsat 7 images of Antarctica. As much as possible, scientists chose adjacent scenes from a single Landsat pass over Antarctica because of the consistent sun angles and weather conditions. Finally, areas with overlapping scenes were studied to select the best quality data available. For areas without any clear images, scientists used the least cloudy image. Processed Landsat Scenes (16 bit - single band) are terrain corrected to Level 1T (NLAPS), processed with sun-angle correction, and available in a GeoTIFF format. The LIMA team processed each Landsat scene with elevation data and sun-angle correction to ensure surface features were accurately represented. The sun's angle in Antarctica gives the appearance of a setting sun. Because of the low sun angle, as Landsat passes over Antarctica, the outer edges of the continent appear brighter than areas closer to the South Pole, so scenes have bright and dark areas. The team corrected for these inconsistent sun angles and shadows. Without this process, mosaicking would produce a patchwork of scenes since each scene would have a brighter and a darker side. 2007 EROS processing steps: 1. We start with Landsat data in NLAPS Data Format (NDF) 2. We have been running the NDF scenes through a preprocessing algorithm to correct sun angles and illumination. This code was provided by NASA scientists. The output from this step are GeoTiff files. 2007 These FGDC metadata were created for display through The National Map Seamless Data Distribution System at <http://seamless.usgs.gov> The metadata are provided in XML format. 2007 U.S. Geological Survey Customer Service Representative mailing and physical address

USGS Center for Earth Resources Observation & Science

47914 252nd Street

Sioux Falls SD 57198-0001 USA 605-594-6151 1-800-252-4547 605-594-6933 605-594-6589 custserv@usgs.gov 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT) Raster Pixel 214758 188280 1 Polar Stereographic 0 -71 0 0 row and column 15.000000 15.000000 meters D_WGS_1984 WGS_1984 6378137.000000 298.257224 North American Vertical Datum of 1988 1.000000 meters Explicit elevation coordinate included with horizontal coordinates See Supplemental Information See Supplemental Information U.S. Geological Survey Customer Services Representative mailing and physical address

USGS Center for Earth Resources Observation & Science

47914 252nd Street

Sioux Falls SD 57198-0001 USA 605/594-6151 1-800-252-4547 605/594-6933 605/594-6589 custserv@usgs.gov 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT) The USGS "Distribution" point of contact is for questions relating only to the data display and download from this web site. For questions regarding data content and quality, please contact: U. S. Antarctic Resource Center MS 515 National Center 12201 Sunrise Valley Drive Reston, VA 20192 The Antarctic Resource Center is open to the public between the hours of 10:00 AM and 4:30 PM, Monday through Friday. For the best possible service, please contact the USARC for an appointment prior to your visit. Phone: (703) 648-6010 Fax: (703) 648-5080 E-mail: usarc@usgs.gov Downloadable Data Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made by the USGS regarding the use of the data on any other system, nor does the act of distribution constitute any such warranty. Data may have been compiled from various outside sources. Spatial information may not meet National Map Accuracy Standards. This information may be updated without notification. The USGS shall not be liable for any activity involving these data, installation, fitness of the data for a particular purpose, its use, or analyses results. Arc/Info Export Format and/or ArcView Shapefile ArcGIS 9.1 ASCII 0.001 http://seamless.usgs.gov The URL <http://seamless.usgs.gov> provides a map interface that allows for data downloads within a customer defined area of interest. Zoom tools are available that can be used to investigate areas of interest on the map interface. The download tool allows the customer to capture layers from the map, utilizing the Seamless Data Distribution System process for downloading. A request summary page is then generated with the download layers listed. By clicking the "download" button on the summary page, a zipped file will be generated that can be saved on the customer's computer. The file can then be unzipped and imported into various user software applications. Not available for dissemination None Variable ESRI ArcGIS Suite and/or Arc/Info or other compatible software, and supporting operating systems. 2007 unknown 20071121 U.S. Geological Survey Customer Services Representative mailing and physical address

USGS Center for Earth Resources Observation & Science

47914 252nd Street

Sioux Falls SD 57198-0001 USA 605/594-6151 1-800-252-4547 605/594-6933 605/594-6589 custserv@usgs.gov 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT) The above is the contact information for the USGS Center for Earth Resources Observation and Science in Sioux Falls, SD. This is the digital data storage and distribution center for the USGS. Metadata information can also be obtained through online services using The National Map Viewer, at http://nationalmap.usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time None None None Unclassified None http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile