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Polar Ice
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291	Further data analysis will be a cooperative project involving both institutions. Jerry Bradley (USGS, Denver), Tom Grover (USGS, Denver), Bruce Vaughn (USGS, Tacoma), and Kurt Hayden (Ohio State University) participated Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 16:45:24 Whillans Ice Stream Antarctica Antarctic ice sheet Kamb Ice Stream Glacier Polar ice packs Ice Shabtaie Ice Ridge Van der Veen Ice Stream Physical geography Geography of Antarctica Glaciology
292	generally lower than arctic ice of comparable thickness. The the highest values. We suggest, however, that the fast freezing of the frazil accumulation is responsible here for the high salinity observed at the surface. Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 18:58:21 Aquatic ecology Sea ice Physical oceanography Chemical oceanography Extreme points of Earth Polar ice packs Seawater Isotopic signature Arctic Ocean Physical geography Water Earth
293	The biomass of these sediments calculated from the extractable phospholipid and polar lipid ester-linked alkyl FAME showed levels equal to those in a highly productive Florida estuary. The antarctic sediments contained a Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 03:58:19 Petrology Sedimentology Sedimentary rocks Fisheries Oceanography Biogenic silica McMurdo Sound Continental shelf Ice shelf Geology Physical geography Water
294	Evidence for sinking along this path is given by intrusions of cold water and freshwater observed at 500-rn (section II) and 1,400-rn (section III) depths (figures 2 and 3). The temperature and salinity maximum over the Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 18:58:12 Glaciology Sea ice Aquatic ecology Water masses Water ice Weddell Sea Bottom Water Weddell Sea Antarctic Bottom Water Polar ice packs Physical geography Water Earth
295	tion there. Our results indicate that nitrifier activity may also be an important pathway of carbon dioxide fixation in the water under annual sea ice at certain times of the year. Carbon dioxide fixed by nitrifiers in t Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 18:03:35 Sea ice Arctic Ocean Extreme points of Earth Climatology McMurdo Sound Polar ice packs Ross Ice Shelf Antarctica Polynya Physical geography Earth Glaciology
296	of the antarctic sea-ice zone on antarctic marine systems, and in the control of global biogeochemical and energy exchanges." It is anticipated that the results of the studies described here will contribute to that goal. Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 19:39:24 Antarctic region Sea ice Argentine Antarctica British Antarctic Territory Antarctica Polar ice packs Southern Ocean Weddell Sea Ice shelf Physical geography Earth Glaciology
297	preindustrial atmospheric CO 2 concentration. This value is low but within the limits estimated by other methods. Additional measurements on south polar ice cores should help to confirm this value and show if there were Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 05:01:12 Ice core Incremental dating Water ice Climate history Dye 3 Antarctica Ice age Amundsen–Scott South Pole Station Stratigraphy Physical geography Geochronology Poles
298	is supported by a Howard Hughes Medical Institute predoctora! fellowship. We thank Captain Karl Sanden and the officers and crew of the Polar Duke for their assistance and hospitality while we were aboard, and C. Mather Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 20:34:33 Weddell seal McMurdo Sound Pinniped McMurdo Station Antarctica Weddell Siniff Bay Erebus Ice Tongue Physical geography True seals Megafauna
299	shoals and surrounded by close or fast ice, forming ice peninsulas or islands. In combination with frequent light easterly and northerly winds, these aggregations must contribute to a slow ocean circulation on the shelf Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 17:20:06 Earth Iceberg Polar ice packs Southern Ocean Amundsen Sea Ice shelf Ice sheet Bellingshausen Sea Antarctic Peninsula Physical geography Glaciology Water ice
300	with summer-surface values. In fact, the pockets probably represented summer surface material that was somehow incorporated into the sequence in bulk before any significant mixing occurred. Given the considerable surface Add to Reading List Source URL: s3.amazonaws.com Language: English - Date: 2011-05-06 15:42:55 Extreme points of Earth Ice core Incremental dating Water ice Byrd Polar Research Center Antarctica Core sample Ross Ice Shelf Pole of inaccessibility Physical geography Poles Geochronology

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