Flow of Rutford Ice Stream and Comparison with Carlson Inlet, Antarctica
Results from movement surveys on Rutford Ice Stream are presented with complementary surface-elevation and ice-thickness measurements. Surface velocities of 300 m a−1 occur at least 130 km up-stream of the grounding line and contrast strongly with the neighbouring Carlson Inlet, where a velocity of...
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| Veröffentlicht in: | Annals of glaciology 1989, Vol.12, p.51-56 |
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| container_title | Annals of glaciology |
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| creator | Frolich, R.M. Vaughan, D.G. Doake, C.S.M. |
| description | Results from movement surveys on Rutford Ice Stream are presented with complementary surface-elevation and ice-thickness measurements. Surface velocities of 300 m a−1 occur at least 130 km up-stream of the grounding line and contrast strongly with the neighbouring Carlson Inlet, where a velocity of 7 m a−1 has been measured. This contrast in velocity is not topographically controlled but appears to be due instead to differences in basal conditions, with Carlson Inlet probably being frozen to its bed. Concentration of lateral shear close to the margins and surface expression of subglacial topography both support a view of significant basal shear stresses in the central part of Rutford Ice Stream. The pattern of principal strain-rate trajectories shows a small number of characteristic features which can be compared with results from future modelling of the glacier's flow. |
| doi_str_mv | 10.3189/S0260305500006959 |
| format | Article |
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Surface velocities of 300 m a−1 occur at least 130 km up-stream of the grounding line and contrast strongly with the neighbouring Carlson Inlet, where a velocity of 7 m a−1 has been measured. This contrast in velocity is not topographically controlled but appears to be due instead to differences in basal conditions, with Carlson Inlet probably being frozen to its bed. Concentration of lateral shear close to the margins and surface expression of subglacial topography both support a view of significant basal shear stresses in the central part of Rutford Ice Stream. The pattern of principal strain-rate trajectories shows a small number of characteristic features which can be compared with results from future modelling of the glacier's flow.</description><identifier>ISSN: 0260-3055</identifier><identifier>EISSN: 1727-5644</identifier><identifier>DOI: 10.3189/S0260305500006959</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Marine and continental quaternary ; Surficial geology</subject><ispartof>Annals of glaciology, 1989, Vol.12, p.51-56</ispartof><rights>Copyright © International Glaciological Society 1989</rights><rights>1990 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2069-a2097c7a1aa006efed59342e3fb6d38f98e0ccc38ff040dfa3bced0c3f5d97603</citedby><cites>FETCH-LOGICAL-c2069-a2097c7a1aa006efed59342e3fb6d38f98e0ccc38ff040dfa3bced0c3f5d97603</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,776,780,785,786,4010,4036,4037,23909,23910,25118,27900,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=6936040$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Frolich, R.M.</creatorcontrib><creatorcontrib>Vaughan, D.G.</creatorcontrib><creatorcontrib>Doake, C.S.M.</creatorcontrib><title>Flow of Rutford Ice Stream and Comparison with Carlson Inlet, Antarctica</title><title>Annals of glaciology</title><addtitle>Ann. Glaciol</addtitle><description>Results from movement surveys on Rutford Ice Stream are presented with complementary surface-elevation and ice-thickness measurements. Surface velocities of 300 m a−1 occur at least 130 km up-stream of the grounding line and contrast strongly with the neighbouring Carlson Inlet, where a velocity of 7 m a−1 has been measured. This contrast in velocity is not topographically controlled but appears to be due instead to differences in basal conditions, with Carlson Inlet probably being frozen to its bed. Concentration of lateral shear close to the margins and surface expression of subglacial topography both support a view of significant basal shear stresses in the central part of Rutford Ice Stream. The pattern of principal strain-rate trajectories shows a small number of characteristic features which can be compared with results from future modelling of the glacier's flow.</description><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Marine and continental quaternary</subject><subject>Surficial geology</subject><issn>0260-3055</issn><issn>1727-5644</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><recordid>eNp9UEtPwzAMjhBIlMEP4JYDRwpp01eOU8W2SpOQGJwr10mgU9tUSaeJf0-qTVyQ8MW2_D1sE3IfsSceFeJ5x-KMcZamzEcmUnFBgiiP8zDNkuSSBPM4nOfX5Ma5PfNYjwvIZtWZIzWavh0mbaykFSq6m6yCnsIgaWn6EWzrzECP7fRFS7Dd3FRDp6ZHuhwmsDi1CLfkSkPn1N05L8jH6uW93ITb13VVLrchxn6vEGImcswhAvD-SiuZCp7Eiusmk7zQolAMEX2lWcKkBt6gkgy5TqXI_YkLEp100RrnrNL1aNse7HcdsXp-Rf3nFZ7zcOKM4BA6bWHA1v0SM8Ezb-Zh_CwNfWNb-anqvTnYwZ_zj_gPopts9Q</recordid><startdate>1989</startdate><enddate>1989</enddate><creator>Frolich, R.M.</creator><creator>Vaughan, D.G.</creator><creator>Doake, C.S.M.</creator><general>Cambridge University Press</general><general>International Glaciological Society</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>1989</creationdate><title>Flow of Rutford Ice Stream and Comparison with Carlson Inlet, Antarctica</title><author>Frolich, R.M. ; Vaughan, D.G. ; Doake, C.S.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2069-a2097c7a1aa006efed59342e3fb6d38f98e0ccc38ff040dfa3bced0c3f5d97603</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1989</creationdate><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Marine and continental quaternary</topic><topic>Surficial geology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Frolich, R.M.</creatorcontrib><creatorcontrib>Vaughan, D.G.</creatorcontrib><creatorcontrib>Doake, C.S.M.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Annals of glaciology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Frolich, R.M.</au><au>Vaughan, D.G.</au><au>Doake, C.S.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Flow of Rutford Ice Stream and Comparison with Carlson Inlet, Antarctica</atitle><jtitle>Annals of glaciology</jtitle><addtitle>Ann. Glaciol</addtitle><date>1989</date><risdate>1989</risdate><volume>12</volume><spage>51</spage><epage>56</epage><pages>51-56</pages><issn>0260-3055</issn><eissn>1727-5644</eissn><abstract>Results from movement surveys on Rutford Ice Stream are presented with complementary surface-elevation and ice-thickness measurements. Surface velocities of 300 m a−1 occur at least 130 km up-stream of the grounding line and contrast strongly with the neighbouring Carlson Inlet, where a velocity of 7 m a−1 has been measured. This contrast in velocity is not topographically controlled but appears to be due instead to differences in basal conditions, with Carlson Inlet probably being frozen to its bed. Concentration of lateral shear close to the margins and surface expression of subglacial topography both support a view of significant basal shear stresses in the central part of Rutford Ice Stream. The pattern of principal strain-rate trajectories shows a small number of characteristic features which can be compared with results from future modelling of the glacier's flow.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.3189/S0260305500006959</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Annals of glaciology, 1989, Vol.12, p.51-56 |
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| language | eng |
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| source | EZB-FREE-00999 freely available EZB journals |
| subjects | Earth sciences Earth, ocean, space Exact sciences and technology Marine and continental quaternary Surficial geology |
| title | Flow of Rutford Ice Stream and Comparison with Carlson Inlet, Antarctica |
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