Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway
Identifieur interne : 001919 ( Istex/Corpus ); précédent : 001918; suivant : 001920Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway
Auteurs : Valentin Burki ; Louise Hansen ; Ola Fredin ; Thorbj Rn A. Andersen ; Achim A. Beylich ; Michel Jaboyedoff ; Eiliv Larsen ; Jan-Frederik T NnesenSource :
- Boreas [ 0300-9483 ] ; 2010-07.
Abstract
Burki, V., Hansen, L., Fredin, O., Andersen, T. A., Beylich, A. A., Jaboyedoff, M., Larsen, E. & Tønnesen, J.‐ F. 2009: Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway. Boreas, Vol. 39, pp. 551–566. 10.1111/j.1502‐3885.2009.00133.x. ISSN 0300‐9483 Bødalsbreen is an outlet glacier of the Jostedalsbreen Ice Field in western Norway. Nine moraine ridges formed during and after the maximum extent of the Little Ice Age (LIA). The stratigraphy of proglacial sediments in the Bødalen basin inside the LIA moraines is examined, and corresponding sediment volumes are calculated based on georadar surveys and seismic profiling. The total erosion rates (etot) by the glacier are determined for the periods AD 1650–1930 and AD 1930–2005 as 0.8 ± 0.4 mm/yr and 0.7 ± 0.3 mm/yr, respectively. These rates are based on the total amount of sediment delivered to the glacier margin. The values are almost one order of magnitude higher than total erosion rates previously calculated for Norwegian glaciers. This is explained by the large amount of pre‐existing sediment that was recycled by Bødalsbreen. Thus, the total erosion rate must be considered as a composite of eroded bedrock and of removed pre‐existing sediments. The total erosion rate is likely to vary with time owing to a decreasing volume of easily erodible, unconsolidated sediment and till under the glacier. A slight increase in the subglacial bedrock erosion is expected owing to the gradually increasing bedrock surface area exposed to subglacial erosion.
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DOI: 10.1111/j.1502-3885.2009.00133.x
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Andersen</name><affiliation><mods:affiliation>University of Copenhagen, Institute of Geography, Øster Voldgade 10, DK‐1350 Copenhagen, Denmark</mods:affiliation></affiliation></author><author><name sortKey="Beylich, Achim A" sort="Beylich, Achim A" uniqKey="Beylich A" first="Achim A." last="Beylich">Achim A. Beylich</name><affiliation><mods:affiliation>Geological Survey of Norway, N‐7491 Trondheim, Norway</mods:affiliation></affiliation></author><author><name sortKey="Jaboyedoff, Michel" sort="Jaboyedoff, Michel" uniqKey="Jaboyedoff M" first="Michel" last="Jaboyedoff">Michel Jaboyedoff</name><affiliation><mods:affiliation>University of Lausanne, Institut de Géomatique et d'Analyse du Risque – FSGE, CP1, CH‐1015 Lausanne, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Larsen, Eiliv" sort="Larsen, Eiliv" uniqKey="Larsen E" first="Eiliv" last="Larsen">Eiliv Larsen</name><affiliation><mods:affiliation>Geological Survey of Norway, N‐7491 Trondheim, Norway</mods:affiliation></affiliation></author><author><name sortKey="T Nnesen, Jan Rederik" sort="T Nnesen, Jan Rederik" uniqKey="T Nnesen J" first="Jan-Frederik" last="T Nnesen">Jan-Frederik T Nnesen</name><affiliation><mods:affiliation>Geological Survey of Norway, N‐7491 Trondheim, Norway</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Boreas</title><idno type="ISSN">0300-9483</idno><idno type="eISSN">1502-3885</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2010-07">2010-07</date><biblScope unit="volume">39</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="551">551</biblScope><biblScope unit="page" to="566">566</biblScope></imprint><idno type="ISSN">0300-9483</idno></series><idno type="istex">26B1952EB221792CF2D3DEDB0115703177CBAFB0</idno><idno type="DOI">10.1111/j.1502-3885.2009.00133.x</idno><idno type="ArticleID">BOR133</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0300-9483</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Burki, V., Hansen, L., Fredin, O., Andersen, T. A., Beylich, A. A., Jaboyedoff, M., Larsen, E. & Tønnesen, J.‐ F. 2009: Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway. Boreas, Vol. 39, pp. 551–566. 10.1111/j.1502‐3885.2009.00133.x. ISSN 0300‐9483 Bødalsbreen is an outlet glacier of the Jostedalsbreen Ice Field in western Norway. Nine moraine ridges formed during and after the maximum extent of the Little Ice Age (LIA). The stratigraphy of proglacial sediments in the Bødalen basin inside the LIA moraines is examined, and corresponding sediment volumes are calculated based on georadar surveys and seismic profiling. The total erosion rates (etot) by the glacier are determined for the periods AD 1650–1930 and AD 1930–2005 as 0.8 ± 0.4 mm/yr and 0.7 ± 0.3 mm/yr, respectively. These rates are based on the total amount of sediment delivered to the glacier margin. The values are almost one order of magnitude higher than total erosion rates previously calculated for Norwegian glaciers. This is explained by the large amount of pre‐existing sediment that was recycled by Bødalsbreen. Thus, the total erosion rate must be considered as a composite of eroded bedrock and of removed pre‐existing sediments. The total erosion rate is likely to vary with time owing to a decreasing volume of easily erodible, unconsolidated sediment and till under the glacier. A slight increase in the subglacial bedrock erosion is expected owing to the gradually increasing bedrock surface area exposed to subglacial erosion.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>VALENTIN BURKI</name><affiliations><json:string>Geological Survey of Norway, N‐7491 Trondheim, Norway</json:string></affiliations></json:item><json:item><name>LOUISE HANSEN</name><affiliations><json:string>Geological Survey of Norway, N‐7491 Trondheim, Norway</json:string></affiliations></json:item><json:item><name>OLA FREDIN</name><affiliations><json:string>Geological Survey of Norway, N‐7491 Trondheim, Norway</json:string></affiliations></json:item><json:item><name>THORBJØRN A. ANDERSEN</name><affiliations><json:string>University of Copenhagen, Institute of Geography, Øster Voldgade 10, DK‐1350 Copenhagen, Denmark</json:string></affiliations></json:item><json:item><name>ACHIM A. BEYLICH</name><affiliations><json:string>Geological Survey of Norway, N‐7491 Trondheim, Norway</json:string></affiliations></json:item><json:item><name>MICHEL JABOYEDOFF</name><affiliations><json:string>University of Lausanne, Institut de Géomatique et d'Analyse du Risque – FSGE, CP1, CH‐1015 Lausanne, Switzerland</json:string></affiliations></json:item><json:item><name>EILIV LARSEN</name><affiliations><json:string>Geological Survey of Norway, N‐7491 Trondheim, Norway</json:string></affiliations></json:item><json:item><name>JAN‐FREDERIK TØNNESEN</name><affiliations><json:string>Geological Survey of Norway, N‐7491 Trondheim, Norway</json:string></affiliations></json:item></author><articleId><json:string>BOR133</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Burki, V., Hansen, L., Fredin, O., Andersen, T. A., Beylich, A. A., Jaboyedoff, M., Larsen, E. & Tønnesen, J.‐ F. 2009: Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway. Boreas, Vol. 39, pp. 551–566. 10.1111/j.1502‐3885.2009.00133.x. ISSN 0300‐9483 Bødalsbreen is an outlet glacier of the Jostedalsbreen Ice Field in western Norway. Nine moraine ridges formed during and after the maximum extent of the Little Ice Age (LIA). The stratigraphy of proglacial sediments in the Bødalen basin inside the LIA moraines is examined, and corresponding sediment volumes are calculated based on georadar surveys and seismic profiling. The total erosion rates (etot) by the glacier are determined for the periods AD 1650–1930 and AD 1930–2005 as 0.8 ± 0.4 mm/yr and 0.7 ± 0.3 mm/yr, respectively. These rates are based on the total amount of sediment delivered to the glacier margin. The values are almost one order of magnitude higher than total erosion rates previously calculated for Norwegian glaciers. This is explained by the large amount of pre‐existing sediment that was recycled by Bødalsbreen. Thus, the total erosion rate must be considered as a composite of eroded bedrock and of removed pre‐existing sediments. The total erosion rate is likely to vary with time owing to a decreasing volume of easily erodible, unconsolidated sediment and till under the glacier. A slight increase in the subglacial bedrock erosion is expected owing to the gradually increasing bedrock surface area exposed to subglacial erosion.</abstract><qualityIndicators><score>7.904</score><pdfVersion>1.3</pdfVersion><pdfPageSize>595.276 x 782.362 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1555</abstractCharCount><pdfWordCount>8679</pdfWordCount><pdfCharCount>52128</pdfCharCount><pdfPageCount>16</pdfPageCount><abstractWordCount>242</abstractWordCount></qualityIndicators><title>Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway</title><refBibs><json:item><author><json:item><name>R. S. Anderson</name></json:item><json:item><name>P. Molnar</name></json:item><json:item><name>M. A. 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A., Beylich, A. A., Jaboyedoff, M., Larsen, E. & Tønnesen, J.‐ F. 2009: Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway. Boreas, Vol. 39, pp. 551–566. 10.1111/j.1502‐3885.2009.00133.x. ISSN 0300‐9483 Bødalsbreen is an outlet glacier of the Jostedalsbreen Ice Field in western Norway. Nine moraine ridges formed during and after the maximum extent of the Little Ice Age (LIA). The stratigraphy of proglacial sediments in the Bødalen basin inside the LIA moraines is examined, and corresponding sediment volumes are calculated based on georadar surveys and seismic profiling. The total erosion rates (etot) by the glacier are determined for the periods AD 1650–1930 and AD 1930–2005 as 0.8 ± 0.4 mm/yr and 0.7 ± 0.3 mm/yr, respectively. These rates are based on the total amount of sediment delivered to the glacier margin. The values are almost one order of magnitude higher than total erosion rates previously calculated for Norwegian glaciers. This is explained by the large amount of pre‐existing sediment that was recycled by Bødalsbreen. Thus, the total erosion rate must be considered as a composite of eroded bedrock and of removed pre‐existing sediments. The total erosion rate is likely to vary with time owing to a decreasing volume of easily erodible, unconsolidated sediment and till under the glacier. A slight increase in the subglacial bedrock erosion is expected owing to the gradually increasing bedrock surface area exposed to subglacial erosion.</p></abstract></profileDesc><revisionDesc><change when="2010-07">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/26B1952EB221792CF2D3DEDB0115703177CBAFB0/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1502-3885</doi><issn 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type="tableTotal" number="6"></count><count type="formulaTotal" number="3"></count><count type="referenceTotal" number="68"></count><count type="wordTotal" number="10969"></count><count type="linksCrossRef" number="160"></count></countGroup><titleGroup><title type="main">Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway</title><title type="shortAuthors">Valentin Burki et al.</title><title type="short">Sediment budgets for an outlet glacier, W Norway</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>VALENTIN</givenNames><familyName>BURKI</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1"><personName><givenNames>LOUISE</givenNames><familyName>HANSEN</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>OLA</givenNames><familyName>FREDIN</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a2"><personName><givenNames>THORBJØRN A.</givenNames><familyName>ANDERSEN</familyName></personName></creator><creator creatorRole="author" xml:id="cr5" affiliationRef="#a1"><personName><givenNames>ACHIM A.</givenNames><familyName>BEYLICH</familyName></personName></creator><creator creatorRole="author" xml:id="cr6" affiliationRef="#a3"><personName><givenNames>MICHEL</givenNames><familyName>JABOYEDOFF</familyName></personName></creator><creator creatorRole="author" xml:id="cr7" affiliationRef="#a1"><personName><givenNames>EILIV</givenNames><familyName>LARSEN</familyName></personName></creator><creator creatorRole="author" xml:id="cr8" affiliationRef="#a1"><personName><givenNames>JAN‐FREDERIK</givenNames><familyName>TØNNESEN</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="NO"><unparsedAffiliation>Geological Survey of Norway, N‐7491 Trondheim, Norway</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="DK"><unparsedAffiliation>University of Copenhagen, Institute of Geography, Øster Voldgade 10, DK‐1350 Copenhagen, Denmark</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="CH"><unparsedAffiliation>University of Lausanne, Institut de Géomatique et d'Analyse du Risque – FSGE, CP1, CH‐1015 Lausanne, Switzerland</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><p>Burki, V., Hansen, L., Fredin, O., Andersen, T. A., Beylich, A. A., Jaboyedoff, M., Larsen, E. & Tønnesen, J.‐ F. 2009: Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway. <i>Boreas</i>, Vol. 39, pp. 551–566. 10.1111/j.1502‐3885.2009.00133.x. ISSN 0300‐9483</p><p>Bødalsbreen is an outlet glacier of the Jostedalsbreen Ice Field in western Norway. Nine moraine ridges formed during and after the maximum extent of the Little Ice Age (LIA). The stratigraphy of proglacial sediments in the Bødalen basin inside the LIA moraines is examined, and corresponding sediment volumes are calculated based on georadar surveys and seismic profiling. The total erosion rates (<i>e</i><sub>tot</sub>) by the glacier are determined for the periods AD 1650–1930 and AD 1930–2005 as 0.8 ± 0.4 mm/yr and 0.7 ± 0.3 mm/yr, respectively. These rates are based on the total amount of sediment delivered to the glacier margin. The values are almost one order of magnitude higher than total erosion rates previously calculated for Norwegian glaciers. This is explained by the large amount of pre‐existing sediment that was recycled by Bødalsbreen. Thus, the total erosion rate must be considered as a composite of eroded bedrock and of removed pre‐existing sediments. The total erosion rate is likely to vary with time owing to a decreasing volume of easily erodible, unconsolidated sediment and till under the glacier. A slight increase in the subglacial bedrock erosion is expected owing to the gradually increasing bedrock surface area exposed to subglacial erosion.</p></abstract></abstractGroup></contentMeta><noteGroup><note xml:id="fn1" numbered="no"><p>Valentin Burki (e‐mail: <email normalForm="valentin.burki@geo.uzh.ch">valentin.burki@geo.uzh.ch</email>), Louise Hansen, Achim A. Beylich, Ola Fredin, Larsen Eiliv and Jan‐Frederik Tønnesen, Geological Survey of Norway, N‐7491 Trondheim, Norway; Thorbjørn A. Andersen, University of Copenhagen, Institute of Geography, Øster Voldgade 10, DK‐1350 Copenhagen, Denmark; Michel Jaboyedoff, University of Lausanne, Institut de Géomatique et d'Analyse du Risque – FSGE, CP1, CH‐1015 Lausanne, Switzerland</p></note></noteGroup></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Sediment budgets for an outlet glacier, W Norway</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway</title></titleInfo><name type="personal"><namePart type="given">VALENTIN</namePart><namePart type="family">BURKI</namePart><affiliation>Geological Survey of Norway, N‐7491 Trondheim, Norway</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">LOUISE</namePart><namePart type="family">HANSEN</namePart><affiliation>Geological Survey of Norway, N‐7491 Trondheim, Norway</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">OLA</namePart><namePart type="family">FREDIN</namePart><affiliation>Geological Survey of Norway, N‐7491 Trondheim, Norway</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">THORBJØRN A.</namePart><namePart type="family">ANDERSEN</namePart><affiliation>University of Copenhagen, Institute of Geography, Øster Voldgade 10, DK‐1350 Copenhagen, Denmark</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">ACHIM A.</namePart><namePart type="family">BEYLICH</namePart><affiliation>Geological Survey of Norway, N‐7491 Trondheim, Norway</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">MICHEL</namePart><namePart type="family">JABOYEDOFF</namePart><affiliation>University of Lausanne, Institut de Géomatique et d'Analyse du Risque – FSGE, CP1, CH‐1015 Lausanne, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">EILIV</namePart><namePart type="family">LARSEN</namePart><affiliation>Geological Survey of Norway, N‐7491 Trondheim, Norway</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">JAN‐FREDERIK</namePart><namePart type="family">TØNNESEN</namePart><affiliation>Geological Survey of Norway, N‐7491 Trondheim, Norway</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2010-07</dateIssued><edition>received 21st July 2008, accepted 30th October 2009.</edition><copyrightDate encoding="w3cdtf">2010</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">10</extent><extent unit="tables">6</extent><extent unit="formulas">3</extent><extent unit="references">68</extent><extent unit="words">10969</extent></physicalDescription><abstract lang="en">Burki, V., Hansen, L., Fredin, O., Andersen, T. A., Beylich, A. A., Jaboyedoff, M., Larsen, E. & Tønnesen, J.‐ F. 2009: Little Ice Age advance and retreat sediment budgets for an outlet glacier in western Norway. Boreas, Vol. 39, pp. 551–566. 10.1111/j.1502‐3885.2009.00133.x. ISSN 0300‐9483 Bødalsbreen is an outlet glacier of the Jostedalsbreen Ice Field in western Norway. Nine moraine ridges formed during and after the maximum extent of the Little Ice Age (LIA). The stratigraphy of proglacial sediments in the Bødalen basin inside the LIA moraines is examined, and corresponding sediment volumes are calculated based on georadar surveys and seismic profiling. The total erosion rates (etot) by the glacier are determined for the periods AD 1650–1930 and AD 1930–2005 as 0.8 ± 0.4 mm/yr and 0.7 ± 0.3 mm/yr, respectively. These rates are based on the total amount of sediment delivered to the glacier margin. The values are almost one order of magnitude higher than total erosion rates previously calculated for Norwegian glaciers. This is explained by the large amount of pre‐existing sediment that was recycled by Bødalsbreen. Thus, the total erosion rate must be considered as a composite of eroded bedrock and of removed pre‐existing sediments. The total erosion rate is likely to vary with time owing to a decreasing volume of easily erodible, unconsolidated sediment and till under the glacier. A slight increase in the subglacial bedrock erosion is expected owing to the gradually increasing bedrock surface area exposed to subglacial erosion.</abstract><relatedItem type="host"><titleInfo><title>Boreas</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0300-9483</identifier><identifier type="eISSN">1502-3885</identifier><identifier type="DOI">10.1111/(ISSN)1502-3885</identifier><identifier type="PublisherID">BOR</identifier><part><date>2010</date><detail type="volume"><caption>vol.</caption><number>39</number></detail><detail type="issue"><caption>no.</caption><number>3</number></detail><extent unit="pages"><start>551</start><end>566</end><total>16</total></extent></part></relatedItem><identifier type="istex">26B1952EB221792CF2D3DEDB0115703177CBAFB0</identifier><identifier type="DOI">10.1111/j.1502-3885.2009.00133.x</identifier><identifier type="ArticleID">BOR133</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2010 The Authors, Journal compilation © 2010 The Boreas Collegium</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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