Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation
Identifieur interne : 000962 ( Istex/Corpus ); précédent : 000961; suivant : 000963Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation
Auteurs : Stephen T. LancasterSource :
- Journal of Geophysical Research: Earth Surface [ 0148-0227 ] ; 2008-12.
Abstract
Steepland valleys subject to debris flows incise bedrock even as episodic deposition typically covers valley bottoms. This paper's hypothesis is that, while continual fluvial processes evacuate deposits, storage of episodic deposition drives valley widening and, thereby, creation of accommodation space for sediment storage on the valley floor. Data from three headwater valleys in the Oregon Coast Range show that valley‐to‐channel width ratios and valley bottom deposit depths are variable, have little systematic variation with respect to contributing area, and are similar on average among sites. A model of valley cross‐section evolution couples soil production, nonlinear diffusion, contrasting rates of channel incision into deposits and bedrock, and stochastic valley bottom deposition. The model reproduces observed flat, deposit‐covered valley bottoms and abrupt transitions to valley sides with oversteepened toe slopes. Simulations address sensitivity of valley morphologies and incision rates to dimensionless numbers, the ratio of instantaneous bedrock and deposit erosion rates (incision number), and the ratio of deposition and evacuation rates (deposition number). For steady state simulations, increasing deposition number by <101 leads to deposit depth and valley bottom width increasing by 101 and 101.5, respectively, and valley bottom incision relative to the instantaneous rate decreasing by 10−3. For incision number increasing by 103, valley capacity (width times toe slope height) relative to mean deposit volume increases by 101.5. Simulations, consistent with field data, imply that steady state valley widths are adjusted to episodic deposition rates and respond more quickly to changes than profile gradients because of contrasting limitations by instantaneous versus long‐term lowering rates.
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DOI: 10.1029/2007JF000938
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation</title><author><name sortKey="Lancaster, Stephen T" sort="Lancaster, Stephen T" uniqKey="Lancaster S" first="Stephen T." last="Lancaster">Stephen T. Lancaster</name><affiliation><mods:affiliation>Department of Geosciences, Oregon State University, Oregon, Corvallis, USA</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: lancasts@geo.oregonstate.edu</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:A28AF1A1644A0DE214ADB2FCB9AF16248A8967E6</idno><date when="2008" year="2008">2008</date><idno type="doi">10.1029/2007JF000938</idno><idno type="url">https://api.istex.fr/document/A28AF1A1644A0DE214ADB2FCB9AF16248A8967E6/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000962</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation</title><author><name sortKey="Lancaster, Stephen T" sort="Lancaster, Stephen T" uniqKey="Lancaster S" first="Stephen T." last="Lancaster">Stephen T. Lancaster</name><affiliation><mods:affiliation>Department of Geosciences, Oregon State University, Oregon, Corvallis, USA</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: lancasts@geo.oregonstate.edu</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Geophysical Research: Earth Surface</title><title level="j" type="abbrev">J. Geophys. Res.</title><idno type="ISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2008-12">2008-12</date><biblScope unit="volume">113</biblScope><biblScope unit="issue">F4</biblScope><biblScope unit="page" from="n/a">n/a</biblScope><biblScope unit="page" to="n/a">n/a</biblScope></imprint><idno type="ISSN">0148-0227</idno></series><idno type="istex">A28AF1A1644A0DE214ADB2FCB9AF16248A8967E6</idno><idno type="DOI">10.1029/2007JF000938</idno><idno type="ArticleID">2007JF000938</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0148-0227</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Steepland valleys subject to debris flows incise bedrock even as episodic deposition typically covers valley bottoms. This paper's hypothesis is that, while continual fluvial processes evacuate deposits, storage of episodic deposition drives valley widening and, thereby, creation of accommodation space for sediment storage on the valley floor. Data from three headwater valleys in the Oregon Coast Range show that valley‐to‐channel width ratios and valley bottom deposit depths are variable, have little systematic variation with respect to contributing area, and are similar on average among sites. A model of valley cross‐section evolution couples soil production, nonlinear diffusion, contrasting rates of channel incision into deposits and bedrock, and stochastic valley bottom deposition. The model reproduces observed flat, deposit‐covered valley bottoms and abrupt transitions to valley sides with oversteepened toe slopes. Simulations address sensitivity of valley morphologies and incision rates to dimensionless numbers, the ratio of instantaneous bedrock and deposit erosion rates (incision number), and the ratio of deposition and evacuation rates (deposition number). For steady state simulations, increasing deposition number by <101 leads to deposit depth and valley bottom width increasing by 101 and 101.5, respectively, and valley bottom incision relative to the instantaneous rate decreasing by 10−3. For incision number increasing by 103, valley capacity (width times toe slope height) relative to mean deposit volume increases by 101.5. Simulations, consistent with field data, imply that steady state valley widths are adjusted to episodic deposition rates and respond more quickly to changes than profile gradients because of contrasting limitations by instantaneous versus long‐term lowering rates.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Stephen T. Lancaster</name><affiliations><json:string>Department of Geosciences, Oregon State University, Oregon, Corvallis, USA</json:string><json:string>E-mail: lancasts@geo.oregonstate.edu</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>landscape evolution</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>sediment supply</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>valley width</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>debris flow</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>bedrock erosion</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>accommodation space</value></json:item></subject><articleId><json:string>2007JF000938</json:string></articleId><language><json:string>eng</json:string></language><abstract>Steepland valleys subject to debris flows incise bedrock even as episodic deposition typically covers valley bottoms. This paper's hypothesis is that, while continual fluvial processes evacuate deposits, storage of episodic deposition drives valley widening and, thereby, creation of accommodation space for sediment storage on the valley floor. Data from three headwater valleys in the Oregon Coast Range show that valley‐to‐channel width ratios and valley bottom deposit depths are variable, have little systematic variation with respect to contributing area, and are similar on average among sites. A model of valley cross‐section evolution couples soil production, nonlinear diffusion, contrasting rates of channel incision into deposits and bedrock, and stochastic valley bottom deposition. The model reproduces observed flat, deposit‐covered valley bottoms and abrupt transitions to valley sides with oversteepened toe slopes. Simulations address sensitivity of valley morphologies and incision rates to dimensionless numbers, the ratio of instantaneous bedrock and deposit erosion rates (incision number), and the ratio of deposition and evacuation rates (deposition number). For steady state simulations, increasing deposition number by >101 leads to deposit depth and valley bottom width increasing by 101 and 101.5, respectively, and valley bottom incision relative to the instantaneous rate decreasing by 10−3. For incision number increasing by 103, valley capacity (width times toe slope height) relative to mean deposit volume increases by 101.5. Simulations, consistent with field data, imply that steady state valley widths are adjusted to episodic deposition rates and respond more quickly to changes than profile gradients because of contrasting limitations by instantaneous versus long‐term lowering rates.</abstract><qualityIndicators><score>8.5</score><pdfVersion>1.4</pdfVersion><pdfPageSize>612 x 792 pts (letter)</pdfPageSize><refBibsNative>true</refBibsNative><keywordCount>6</keywordCount><abstractCharCount>1824</abstractCharCount><pdfWordCount>12802</pdfWordCount><pdfCharCount>78380</pdfCharCount><pdfPageCount>17</pdfPageCount><abstractWordCount>253</abstractWordCount></qualityIndicators><title>Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation</title><genre.original><json:string>article</json:string></genre.original><genre><json:string>article</json:string></genre><host><volume>113</volume><publisherId><json:string>JGRF</json:string></publisherId><pages><total>17</total><last>n/a</last><first>n/a</first></pages><issn><json:string>0148-0227</json:string></issn><issue>F4</issue><subject><json:item><value>Hydrology</value></json:item><json:item><value>Hydrology: Geomorphology: general</value></json:item><json:item><value>Global Change: Geomorphology and weathering</value></json:item><json:item><value>Hydrology: Debris flow and landslides</value></json:item><json:item><value>Hydrology: Erosion</value></json:item><json:item><value>Tectonophysics</value></json:item><json:item><value>Tectonophysics: Tectonics and landscape evolution</value></json:item></subject><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><eissn><json:string>2156-2202</json:string></eissn><title>Journal of Geophysical Research: Earth Surface</title><doi><json:string>10.1002/(ISSN)2156-2202f</json:string></doi></host><publicationDate>2008</publicationDate><copyrightDate>2008</copyrightDate><doi><json:string>10.1029/2007JF000938</json:string></doi><id>A28AF1A1644A0DE214ADB2FCB9AF16248A8967E6</id><fulltext><json:item><original>true</original><mimetype>application/pdf</mimetype><extension>pdf</extension><uri>https://api.istex.fr/document/A28AF1A1644A0DE214ADB2FCB9AF16248A8967E6/fulltext/pdf</uri></json:item><json:item><original>false</original><mimetype>application/zip</mimetype><extension>zip</extension><uri>https://api.istex.fr/document/A28AF1A1644A0DE214ADB2FCB9AF16248A8967E6/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/A28AF1A1644A0DE214ADB2FCB9AF16248A8967E6/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Blackwell Publishing Ltd</publisher><availability><p>WILEY</p></availability><date>2008</date></publicationStmt><notesStmt><note>Tab‐delimited Table 1.Tab‐delimited Table 2.Tab‐delimited Table 3.Tab‐delimited Table 4.Tab‐delimited Table 5.</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation</title><author><persName><forename type="first">Stephen T.</forename><surname>Lancaster</surname></persName><email>lancasts@geo.oregonstate.edu</email><affiliation>Department of Geosciences, Oregon State University, Oregon, Corvallis, USA</affiliation></author></analytic><monogr><title level="j">Journal of Geophysical Research: Earth Surface</title><title level="j" type="abbrev">J. Geophys. Res.</title><idno type="pISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><idno type="DOI">10.1002/(ISSN)2156-2202f</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2008-12"></date><biblScope unit="volume">113</biblScope><biblScope unit="issue">F4</biblScope><biblScope unit="page" from="n/a">n/a</biblScope><biblScope unit="page" to="n/a">n/a</biblScope></imprint></monogr><idno type="istex">A28AF1A1644A0DE214ADB2FCB9AF16248A8967E6</idno><idno type="DOI">10.1029/2007JF000938</idno><idno type="ArticleID">2007JF000938</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2008</date></creation><langUsage><language ident="en">en</language></langUsage><abstract><p>Steepland valleys subject to debris flows incise bedrock even as episodic deposition typically covers valley bottoms. This paper's hypothesis is that, while continual fluvial processes evacuate deposits, storage of episodic deposition drives valley widening and, thereby, creation of accommodation space for sediment storage on the valley floor. Data from three headwater valleys in the Oregon Coast Range show that valley‐to‐channel width ratios and valley bottom deposit depths are variable, have little systematic variation with respect to contributing area, and are similar on average among sites. A model of valley cross‐section evolution couples soil production, nonlinear diffusion, contrasting rates of channel incision into deposits and bedrock, and stochastic valley bottom deposition. The model reproduces observed flat, deposit‐covered valley bottoms and abrupt transitions to valley sides with oversteepened toe slopes. Simulations address sensitivity of valley morphologies and incision rates to dimensionless numbers, the ratio of instantaneous bedrock and deposit erosion rates (incision number), and the ratio of deposition and evacuation rates (deposition number). For steady state simulations, increasing deposition number by <101 leads to deposit depth and valley bottom width increasing by 101 and 101.5, respectively, and valley bottom incision relative to the instantaneous rate decreasing by 10−3. For incision number increasing by 103, valley capacity (width times toe slope height) relative to mean deposit volume increases by 101.5. Simulations, consistent with field data, imply that steady state valley widths are adjusted to episodic deposition rates and respond more quickly to changes than profile gradients because of contrasting limitations by instantaneous versus long‐term lowering rates.</p></abstract><textClass><keywords scheme="keyword"><list><head>keywords</head><item><term>landscape evolution</term></item><item><term>sediment supply</term></item><item><term>valley width</term></item><item><term>debris flow</term></item><item><term>bedrock erosion</term></item><item><term>accommodation space</term></item></list></keywords></textClass><textClass><keywords scheme="Journal Subject"><list><head>index-terms</head><item><term>Hydrology</term></item><item><term>Hydrology: Geomorphology: general</term></item><item><term>Global Change: Geomorphology and weathering</term></item><item><term>Hydrology: Debris flow and landslides</term></item><item><term>Hydrology: Erosion</term></item><item><term>Tectonophysics</term></item><item><term>Tectonophysics: Tectonics and landscape evolution</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2007-11-05">Received</change><change when="2008-08-22">Registration</change><change when="2008-12">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/A28AF1A1644A0DE214ADB2FCB9AF16248A8967E6/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 type="serialArticle" version="2.0" xml:lang="en" xml:id="jgrf500"><header><publicationMeta level="product"><doi>10.1002/(ISSN)2156-2202f</doi><issn type="print">0148-0227</issn><issn type="electronic">2156-2202</issn><idGroup><id type="product" value="JGRF"></id><id type="coden" value="JGREA2"></id></idGroup><titleGroup><title type="main" xml:lang="en" sort="JOURNAL OF GEOPHYSICAL RESEARCH: EARTH SURFACE">Journal of Geophysical Research: Earth Surface</title><title type="short">J. 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T.</givenNames></author> (<pubYear year="2008">2008</pubYear>), <articleTitle>Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation</articleTitle>, <journalTitle>J. Geophys. Res.</journalTitle>, <vol>113</vol>, F04002, doi:<accessionId ref="info:doi/10.1029/2007JF000938">10.1029/2007JF000938</accessionId>.</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:JGRF.JGRF500.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="figureTotal" number="9"></count><count type="tableTotal" number="5"></count></countGroup><titleGroup><title type="main">Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation</title><title type="short">BEDROCK‐INCISING VALLEYS</title><title type="shortAuthors">Lancaster</title></titleGroup><creators><creator creatorRole="author" xml:id="jgrf500-cr-0001" affiliationRef="#jgrf500-aff-0001"><personName><givenNames>Stephen T.</givenNames> <familyName>Lancaster</familyName></personName><contactDetails><email normalForm="lancasts@geo.oregonstate.edu">lancasts@geo.oregonstate.edu</email></contactDetails></creator></creators><affiliationGroup><affiliation countryCode="US" type="organization" xml:id="jgrf500-aff-0001"><orgDiv>Department of Geosciences</orgDiv><orgName>Oregon State University</orgName><address><city>Corvallis</city><countryPart>Oregon</countryPart><country>USA</country></address></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="jgrf500-kwd-0001">landscape evolution</keyword><keyword xml:id="jgrf500-kwd-0002">sediment supply</keyword><keyword xml:id="jgrf500-kwd-0003">valley width</keyword><keyword xml:id="jgrf500-kwd-0004">debris flow</keyword><keyword xml:id="jgrf500-kwd-0005">bedrock erosion</keyword><keyword xml:id="jgrf500-kwd-0006">accommodation space</keyword></keywordGroup><supportingInformation><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrf500:jgrf500-sup-0001-t01"></mediaResource><caption>Tab‐delimited Table 1.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrf500:jgrf500-sup-0002-t02"></mediaResource><caption>Tab‐delimited Table 2.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrf500:jgrf500-sup-0003-t03"></mediaResource><caption>Tab‐delimited Table 3.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrf500:jgrf500-sup-0004-t04"></mediaResource><caption>Tab‐delimited Table 4.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrf500:jgrf500-sup-0005-t05"></mediaResource><caption>Tab‐delimited Table 5.</caption></supportingInfoItem></supportingInformation><abstractGroup><abstract type="main"><p xml:id="jgrf500-para-0001" label="1">Steepland valleys subject to debris flows incise bedrock even as episodic deposition typically covers valley bottoms. This paper's hypothesis is that, while continual fluvial processes evacuate deposits, storage of episodic deposition drives valley widening and, thereby, creation of accommodation space for sediment storage on the valley floor. Data from three headwater valleys in the Oregon Coast Range show that valley‐to‐channel width ratios and valley bottom deposit depths are variable, have little systematic variation with respect to contributing area, and are similar on average among sites. A model of valley cross‐section evolution couples soil production, nonlinear diffusion, contrasting rates of channel incision into deposits and bedrock, and stochastic valley bottom deposition. The model reproduces observed flat, deposit‐covered valley bottoms and abrupt transitions to valley sides with oversteepened toe slopes. Simulations address sensitivity of valley morphologies and incision rates to dimensionless numbers, the ratio of instantaneous bedrock and deposit erosion rates (incision number), and the ratio of deposition and evacuation rates (deposition number). For steady state simulations, increasing deposition number by <10<sup>1</sup> leads to deposit depth and valley bottom width increasing by 10<sup>1</sup> and 10<sup>1.5</sup>, respectively, and valley bottom incision relative to the instantaneous rate decreasing by 10<sup>−3</sup>. For incision number increasing by 10<sup>3</sup>, valley capacity (width times toe slope height) relative to mean deposit volume increases by 10<sup>1.5</sup>. Simulations, consistent with field data, imply that steady state valley widths are adjusted to episodic deposition rates and respond more quickly to changes than profile gradients because of contrasting limitations by instantaneous versus long‐term lowering rates.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation</title></titleInfo><titleInfo type="abbreviated"><title>BEDROCK‐INCISING VALLEYS</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation</title></titleInfo><name type="personal"><namePart type="given">Stephen T.</namePart><namePart type="family">Lancaster</namePart><affiliation>Department of Geosciences, Oregon State University, Oregon, Corvallis, USA</affiliation><affiliation>E-mail: lancasts@geo.oregonstate.edu</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2008-12</dateIssued><dateCaptured encoding="w3cdtf">2007-11-05</dateCaptured><dateValid encoding="w3cdtf">2008-08-22</dateValid><edition>Lancaster, S. T. (2008), Evolution of sediment accommodation space in steady state bedrock‐incising valleys subject to episodic aggradation, J. Geophys. Res., 113, F04002, doi:10.1029/2007JF000938.</edition><copyrightDate encoding="w3cdtf">2008</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">9</extent><extent unit="tables">5</extent></physicalDescription><abstract>Steepland valleys subject to debris flows incise bedrock even as episodic deposition typically covers valley bottoms. This paper's hypothesis is that, while continual fluvial processes evacuate deposits, storage of episodic deposition drives valley widening and, thereby, creation of accommodation space for sediment storage on the valley floor. Data from three headwater valleys in the Oregon Coast Range show that valley‐to‐channel width ratios and valley bottom deposit depths are variable, have little systematic variation with respect to contributing area, and are similar on average among sites. A model of valley cross‐section evolution couples soil production, nonlinear diffusion, contrasting rates of channel incision into deposits and bedrock, and stochastic valley bottom deposition. The model reproduces observed flat, deposit‐covered valley bottoms and abrupt transitions to valley sides with oversteepened toe slopes. Simulations address sensitivity of valley morphologies and incision rates to dimensionless numbers, the ratio of instantaneous bedrock and deposit erosion rates (incision number), and the ratio of deposition and evacuation rates (deposition number). For steady state simulations, increasing deposition number by <101 leads to deposit depth and valley bottom width increasing by 101 and 101.5, respectively, and valley bottom incision relative to the instantaneous rate decreasing by 10−3. For incision number increasing by 103, valley capacity (width times toe slope height) relative to mean deposit volume increases by 101.5. Simulations, consistent with field data, imply that steady state valley widths are adjusted to episodic deposition rates and respond more quickly to changes than profile gradients because of contrasting limitations by instantaneous versus long‐term lowering rates.</abstract><note type="additional physical form">Tab‐delimited Table 1.Tab‐delimited Table 2.Tab‐delimited Table 3.Tab‐delimited Table 4.Tab‐delimited Table 5.</note><subject><genre>keywords</genre><topic>landscape evolution</topic><topic>sediment supply</topic><topic>valley width</topic><topic>debris flow</topic><topic>bedrock erosion</topic><topic>accommodation space</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Geophysical Research: Earth Surface</title></titleInfo><titleInfo type="abbreviated"><title>J. Geophys. Res.</title></titleInfo><genre type="journal">journal</genre><subject><genre>index-terms</genre><topic authorityURI="http://psi.agu.org/taxonomy5/1800">Hydrology</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1824">Hydrology: Geomorphology: general</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1625">Global Change: Geomorphology and weathering</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1810">Hydrology: Debris flow and landslides</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1815">Hydrology: Erosion</topic><topic authorityURI="http://psi.agu.org/taxonomy5/8100">Tectonophysics</topic><topic authorityURI="http://psi.agu.org/taxonomy5/8175">Tectonophysics: Tectonics and landscape evolution</topic></subject><identifier type="ISSN">0148-0227</identifier><identifier type="eISSN">2156-2202</identifier><identifier type="DOI">10.1002/(ISSN)2156-2202f</identifier><identifier type="CODEN">JGREA2</identifier><identifier type="PublisherID">JGRF</identifier><part><date>2008</date><detail type="volume"><caption>vol.</caption><number>113</number></detail><detail type="issue"><caption>no.</caption><number>F4</number></detail><extent unit="pages"><start>n/a</start><end>n/a</end><total>17</total></extent></part></relatedItem><identifier type="istex">A28AF1A1644A0DE214ADB2FCB9AF16248A8967E6</identifier><identifier type="DOI">10.1029/2007JF000938</identifier><identifier type="ArticleID">2007JF000938</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright 2008 by the American Geophysical Union.</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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