Investigating the transport dynamics and the properties of bedload material with a hydro‐acoustic measuring system
Identifieur interne : 001975 ( Istex/Corpus ); précédent : 001974; suivant : 001976Investigating the transport dynamics and the properties of bedload material with a hydro‐acoustic measuring system
Auteurs : Andreas Krein ; Holger Klinck ; Michael Eiden ; Wolfhard Symader ; Reinhard Bierl ; Lucien Hoffmann ; Laurent PfisterSource :
- Earth Surface Processes and Landforms [ 0197-9337 ] ; 2008-01.
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- KwdEn :
Abstract
This article deals with the following two questions. Are acoustic measurements in running waters appropriate for a highly resolved investigation of the bedload transport? Which characterizations of the bedload regarding mass and shape are possible via the acoustic signals? The signals were recorded by means of data recorders (Tascam Inc. DAP1 Portable Data Recorder) and hydrophones (International Transducer Corp. ITC‐4001 A). The ITC‐4001 is a shallow water omnidirectional transducer containing a flexural disc transducer utilizing Channelite‐5400 ceramics mounted in a rugged corrosion‐resistant housing. These hydrophones were screwed onto the bottom side of stainless steel plates, serving as a contact surface for the bedload in motion above them. After more than 100 series of tests in the laboratory, which indicated the basic relations between the dimension, shape and weight of the bedload and the resulting signal, field tests of the measuring system were conducted. By artificially produced flood waves in the small brooks Riverisbach, Olewiger Bach and by a winter flood wave in the River Moselle, it is possible to elaborate similar structures of the signal course of the bedload movement. The highest transport rates can be observed at the beginning of the increasing limbs and behind the peaks of the waves. At the beginning of the waves, the increasing transport power of the water and the loose material can be considered as the cause for this result. The high stream velocity behind the wave peaks explains the increase in the bedload transport so that material from the channel beds is unfastened and will be mobilized. The characterization of the bedload regarding the shape and mass is still limited regarding the field measurements and could be solved only for homogeneous grain sizes and single stones under laboratory conditions. Copyright © 2007 John Wiley & Sons, Ltd.
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DOI: 10.1002/esp.1576
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ISTEX:CA80C8ED308E3B0EB9EC0968342837B85CA6475BLe document en format XML
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sort="Bierl, Reinhard" uniqKey="Bierl R" first="Reinhard" last="Bierl">Reinhard Bierl</name><affiliation><mods:affiliation>Department of Hydrology, University of Trier, D‐54286 Trier, Germany</mods:affiliation></affiliation></author><author><name sortKey="Hoffmann, Lucien" sort="Hoffmann, Lucien" uniqKey="Hoffmann L" first="Lucien" last="Hoffmann">Lucien Hoffmann</name><affiliation><mods:affiliation>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg</mods:affiliation></affiliation></author><author><name sortKey="Pfister, Laurent" sort="Pfister, Laurent" uniqKey="Pfister L" first="Laurent" last="Pfister">Laurent Pfister</name><affiliation><mods:affiliation>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of 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Landforms</title><idno type="ISSN">0197-9337</idno><idno type="eISSN">1096-9837</idno><imprint><publisher>John Wiley & Sons, Ltd.</publisher><pubPlace>Chichester, UK</pubPlace><date type="published" when="2008-01">2008-01</date><biblScope unit="volume">33</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="152">152</biblScope><biblScope unit="page" to="163">163</biblScope></imprint><idno type="ISSN">0197-9337</idno></series><idno type="istex">CA80C8ED308E3B0EB9EC0968342837B85CA6475B</idno><idno type="DOI">10.1002/esp.1576</idno><idno type="ArticleID">ESP1576</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0197-9337</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>bedload</term><term>flood events</term><term>hydrophones</term><term>hydro‐acoustics</term><term>sediment transport</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This article deals with the following two questions. Are acoustic measurements in running waters appropriate for a highly resolved investigation of the bedload transport? Which characterizations of the bedload regarding mass and shape are possible via the acoustic signals? The signals were recorded by means of data recorders (Tascam Inc. DAP1 Portable Data Recorder) and hydrophones (International Transducer Corp. ITC‐4001 A). The ITC‐4001 is a shallow water omnidirectional transducer containing a flexural disc transducer utilizing Channelite‐5400 ceramics mounted in a rugged corrosion‐resistant housing. These hydrophones were screwed onto the bottom side of stainless steel plates, serving as a contact surface for the bedload in motion above them. After more than 100 series of tests in the laboratory, which indicated the basic relations between the dimension, shape and weight of the bedload and the resulting signal, field tests of the measuring system were conducted. By artificially produced flood waves in the small brooks Riverisbach, Olewiger Bach and by a winter flood wave in the River Moselle, it is possible to elaborate similar structures of the signal course of the bedload movement. The highest transport rates can be observed at the beginning of the increasing limbs and behind the peaks of the waves. At the beginning of the waves, the increasing transport power of the water and the loose material can be considered as the cause for this result. The high stream velocity behind the wave peaks explains the increase in the bedload transport so that material from the channel beds is unfastened and will be mobilized. The characterization of the bedload regarding the shape and mass is still limited regarding the field measurements and could be solved only for homogeneous grain sizes and single stones under laboratory conditions. Copyright © 2007 John Wiley & Sons, Ltd.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Andreas Krein</name><affiliations><json:string>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg</json:string><json:string>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg.</json:string></affiliations></json:item><json:item><name>Holger Klinck</name><affiliations><json:string>Alfred Wegener Institute – Foundation for Polar and Marine Research, Postfach 120161, D‐27515 Bremerhaven, Germany, e‐mail: holger.klinck@awi.de</json:string></affiliations></json:item><json:item><name>Michael Eiden</name><affiliations><json:string>Department of Hydrology, University of Trier, D‐54286 Trier, Germany</json:string></affiliations></json:item><json:item><name>Wolfhard Symader</name><affiliations><json:string>Department of Hydrology, University of Trier, D‐54286 Trier, Germany</json:string></affiliations></json:item><json:item><name>Reinhard Bierl</name><affiliations><json:string>Department of Hydrology, University of Trier, D‐54286 Trier, Germany</json:string></affiliations></json:item><json:item><name>Lucien Hoffmann</name><affiliations><json:string>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg</json:string></affiliations></json:item><json:item><name>Laurent Pfister</name><affiliations><json:string>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>hydrophones</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>hydro‐acoustics</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>sediment transport</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>bedload</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>flood events</value></json:item></subject><articleId><json:string>ESP1576</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>miscellaneous</json:string></originalGenre><abstract>This article deals with the following two questions. Are acoustic measurements in running waters appropriate for a highly resolved investigation of the bedload transport? Which characterizations of the bedload regarding mass and shape are possible via the acoustic signals? The signals were recorded by means of data recorders (Tascam Inc. DAP1 Portable Data Recorder) and hydrophones (International Transducer Corp. ITC‐4001 A). The ITC‐4001 is a shallow water omnidirectional transducer containing a flexural disc transducer utilizing Channelite‐5400 ceramics mounted in a rugged corrosion‐resistant housing. These hydrophones were screwed onto the bottom side of stainless steel plates, serving as a contact surface for the bedload in motion above them. After more than 100 series of tests in the laboratory, which indicated the basic relations between the dimension, shape and weight of the bedload and the resulting signal, field tests of the measuring system were conducted. By artificially produced flood waves in the small brooks Riverisbach, Olewiger Bach and by a winter flood wave in the River Moselle, it is possible to elaborate similar structures of the signal course of the bedload movement. The highest transport rates can be observed at the beginning of the increasing limbs and behind the peaks of the waves. At the beginning of the waves, the increasing transport power of the water and the loose material can be considered as the cause for this result. The high stream velocity behind the wave peaks explains the increase in the bedload transport so that material from the channel beds is unfastened and will be mobilized. The characterization of the bedload regarding the shape and mass is still limited regarding the field measurements and could be solved only for homogeneous grain sizes and single stones under laboratory conditions. Copyright © 2007 John Wiley & Sons, Ltd.</abstract><qualityIndicators><score>8</score><pdfVersion>1.3</pdfVersion><pdfPageSize>567 x 737 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1898</abstractCharCount><pdfWordCount>7730</pdfWordCount><pdfCharCount>43472</pdfCharCount><pdfPageCount>12</pdfPageCount><abstractWordCount>295</abstractWordCount></qualityIndicators><title>Investigating the transport dynamics and the properties of bedload material with a hydro‐acoustic measuring system</title><refBibs><json:item><author><json:item><name>N Ajbulatov</name></json:item><json:item><name>V Boldyrev</name></json:item><json:item><name>H Griesseier</name></json:item></author><host><volume>4</volume><pages><last>263</last><first>254</first></pages><author></author><title>Petermanns Geographische Mitteilungen</title></host><title>Das Studium der Sedimentbewegung in Flüssen und Meeren mit Hilfe lumineszierender Farbstoffe und radioaktiver Isotope</title></json:item><json:item><author><json:item><name>R Bänziger</name></json:item><json:item><name>H Burch</name></json:item></author><host><pages><last>214</last><first>207</first></pages><author></author><title>Hydrology in Mountain Regions I. 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Simulation Neuronaler Netze. Addison Wesley: München.</title></host></json:item></refBibs><genre><json:string>other</json:string></genre><host><volume>33</volume><publisherId><json:string>ESP</json:string></publisherId><pages><total>12</total><last>163</last><first>152</first></pages><issn><json:string>0197-9337</json:string></issn><issue>1</issue><subject><json:item><value>Technical Communication</value></json:item></subject><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><eissn><json:string>1096-9837</json:string></eissn><title>Earth Surface Processes and Landforms</title><doi><json:string>10.1002/(ISSN)1096-9837</json:string></doi></host><categories><wos><json:string>science</json:string><json:string>geosciences, multidisciplinary</json:string><json:string>geography, physical</json:string></wos><scienceMetrix><json:string>economic & social sciences</json:string><json:string>social sciences</json:string><json:string>geography</json:string></scienceMetrix></categories><publicationDate>2008</publicationDate><copyrightDate>2008</copyrightDate><doi><json:string>10.1002/esp.1576</json:string></doi><id>CA80C8ED308E3B0EB9EC0968342837B85CA6475B</id><score>0.8487439</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/CA80C8ED308E3B0EB9EC0968342837B85CA6475B/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/CA80C8ED308E3B0EB9EC0968342837B85CA6475B/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/CA80C8ED308E3B0EB9EC0968342837B85CA6475B/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">Investigating the transport dynamics and the properties of bedload material with a hydro‐acoustic measuring system</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>John Wiley & Sons, Ltd.</publisher><pubPlace>Chichester, UK</pubPlace><availability><p>Copyright © 2007 John Wiley & Sons, Ltd.</p></availability><date>2008</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Investigating the transport dynamics and the properties of bedload material with a hydro‐acoustic measuring system</title><author xml:id="author-1"><persName><forename type="first">Andreas</forename><surname>Krein</surname></persName><affiliation>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg</affiliation><affiliation>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg.</affiliation></author><author xml:id="author-2"><persName><forename type="first">Holger</forename><surname>Klinck</surname></persName><affiliation>Alfred Wegener Institute – Foundation for Polar and Marine Research, Postfach 120161, D‐27515 Bremerhaven, Germany, e‐mail: holger.klinck@awi.de</affiliation></author><author xml:id="author-3"><persName><forename type="first">Michael</forename><surname>Eiden</surname></persName><affiliation>Department of Hydrology, University of Trier, D‐54286 Trier, Germany</affiliation></author><author xml:id="author-4"><persName><forename type="first">Wolfhard</forename><surname>Symader</surname></persName><affiliation>Department of Hydrology, University of Trier, D‐54286 Trier, Germany</affiliation></author><author xml:id="author-5"><persName><forename type="first">Reinhard</forename><surname>Bierl</surname></persName><affiliation>Department of Hydrology, University of Trier, D‐54286 Trier, Germany</affiliation></author><author xml:id="author-6"><persName><forename type="first">Lucien</forename><surname>Hoffmann</surname></persName><affiliation>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg</affiliation></author><author xml:id="author-7"><persName><forename type="first">Laurent</forename><surname>Pfister</surname></persName><affiliation>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg</affiliation></author></analytic><monogr><title level="j">Earth Surface Processes and Landforms</title><title level="j" type="sub">The Journal of the British Geomorphological Research Group</title><title level="j" type="abbrev">Earth Surf. Process. Landforms</title><idno type="pISSN">0197-9337</idno><idno type="eISSN">1096-9837</idno><idno type="DOI">10.1002/(ISSN)1096-9837</idno><imprint><publisher>John Wiley & Sons, Ltd.</publisher><pubPlace>Chichester, UK</pubPlace><date type="published" when="2008-01"></date><biblScope unit="volume">33</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="152">152</biblScope><biblScope unit="page" to="163">163</biblScope></imprint></monogr><idno type="istex">CA80C8ED308E3B0EB9EC0968342837B85CA6475B</idno><idno type="DOI">10.1002/esp.1576</idno><idno type="ArticleID">ESP1576</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2008</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>This article deals with the following two questions. Are acoustic measurements in running waters appropriate for a highly resolved investigation of the bedload transport? Which characterizations of the bedload regarding mass and shape are possible via the acoustic signals? The signals were recorded by means of data recorders (Tascam Inc. DAP1 Portable Data Recorder) and hydrophones (International Transducer Corp. ITC‐4001 A). The ITC‐4001 is a shallow water omnidirectional transducer containing a flexural disc transducer utilizing Channelite‐5400 ceramics mounted in a rugged corrosion‐resistant housing. These hydrophones were screwed onto the bottom side of stainless steel plates, serving as a contact surface for the bedload in motion above them. After more than 100 series of tests in the laboratory, which indicated the basic relations between the dimension, shape and weight of the bedload and the resulting signal, field tests of the measuring system were conducted. By artificially produced flood waves in the small brooks Riverisbach, Olewiger Bach and by a winter flood wave in the River Moselle, it is possible to elaborate similar structures of the signal course of the bedload movement. The highest transport rates can be observed at the beginning of the increasing limbs and behind the peaks of the waves. At the beginning of the waves, the increasing transport power of the water and the loose material can be considered as the cause for this result. The high stream velocity behind the wave peaks explains the increase in the bedload transport so that material from the channel beds is unfastened and will be mobilized. The characterization of the bedload regarding the shape and mass is still limited regarding the field measurements and could be solved only for homogeneous grain sizes and single stones under laboratory conditions. Copyright © 2007 John Wiley & Sons, Ltd.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>keywords</head><item><term>hydrophones</term></item><item><term>hydro‐acoustics</term></item><item><term>sediment transport</term></item><item><term>bedload</term></item><item><term>flood events</term></item></list></keywords></textClass><textClass><keywords scheme="Journal Subject"><list><head>article-category</head><item><term>Technical Communication</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2006-07-26">Received</change><change when="2007-06-11">Registration</change><change when="2008-01">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/CA80C8ED308E3B0EB9EC0968342837B85CA6475B/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>John Wiley & Sons, Ltd.</publisherName><publisherLoc>Chichester, UK</publisherLoc></publisherInfo><doi registered="yes">10.1002/(ISSN)1096-9837</doi><issn type="print">0197-9337</issn><issn type="electronic">1096-9837</issn><idGroup><id type="product" value="ESP"></id></idGroup><titleGroup><title type="main" xml:lang="en" sort="EARTH SURFACE PROCESSES AND LANDFORMS">Earth Surface Processes and Landforms</title><title type="subtitle">The Journal of the British Geomorphological Research Group</title><title type="short">Earth Surf. 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Are acoustic measurements in running waters appropriate for a highly resolved investigation of the bedload transport? Which characterizations of the bedload regarding mass and shape are possible via the acoustic signals? The signals were recorded by means of data recorders (Tascam Inc. DAP1 Portable Data Recorder) and hydrophones (International Transducer Corp. ITC‐4001 A). The ITC‐4001 is a shallow water omnidirectional transducer containing a flexural disc transducer utilizing Channelite‐5400 ceramics mounted in a rugged corrosion‐resistant housing. These hydrophones were screwed onto the bottom side of stainless steel plates, serving as a contact surface for the bedload in motion above them. After more than 100 series of tests in the laboratory, which indicated the basic relations between the dimension, shape and weight of the bedload and the resulting signal, field tests of the measuring system were conducted. By artificially produced flood waves in the small brooks Riverisbach, Olewiger Bach and by a winter flood wave in the River Moselle, it is possible to elaborate similar structures of the signal course of the bedload movement. The highest transport rates can be observed at the beginning of the increasing limbs and behind the peaks of the waves. At the beginning of the waves, the increasing transport power of the water and the loose material can be considered as the cause for this result. The high stream velocity behind the wave peaks explains the increase in the bedload transport so that material from the channel beds is unfastened and will be mobilized. The characterization of the bedload regarding the shape and mass is still limited regarding the field measurements and could be solved only for homogeneous grain sizes and single stones under laboratory conditions. Copyright © 2007 John Wiley & Sons, Ltd.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Investigating the transport dynamics and the properties of bedload material with a hydro‐acoustic measuring system</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Hydro‐acoustic bedload observations</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Investigating the transport dynamics and the properties of bedload material with a hydro‐acoustic measuring system</title></titleInfo><name type="personal"><namePart type="given">Andreas</namePart><namePart type="family">Krein</namePart><affiliation>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg</affiliation><affiliation>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Holger</namePart><namePart type="family">Klinck</namePart><affiliation>Alfred Wegener Institute – Foundation for Polar and Marine Research, Postfach 120161, D‐27515 Bremerhaven, Germany, e‐mail: holger.klinck@awi.de</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Michael</namePart><namePart type="family">Eiden</namePart><affiliation>Department of Hydrology, University of Trier, D‐54286 Trier, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Wolfhard</namePart><namePart type="family">Symader</namePart><affiliation>Department of Hydrology, University of Trier, D‐54286 Trier, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Reinhard</namePart><namePart type="family">Bierl</namePart><affiliation>Department of Hydrology, University of Trier, D‐54286 Trier, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Lucien</namePart><namePart type="family">Hoffmann</namePart><affiliation>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Laurent</namePart><namePart type="family">Pfister</namePart><affiliation>Public Research Centre – Gabriel Lippmann, Department of Environment and Agro‐Biotechnologies, 41, rue du Brill, L‐4422 Belvaux, Grand Duchy of Luxembourg</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="other" displayLabel="miscellaneous"></genre><originInfo><publisher>John Wiley & Sons, Ltd.</publisher><place><placeTerm type="text">Chichester, UK</placeTerm></place><dateIssued encoding="w3cdtf">2008-01</dateIssued><dateCaptured encoding="w3cdtf">2006-07-26</dateCaptured><dateValid encoding="w3cdtf">2007-06-11</dateValid><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">7</extent><extent unit="references">20</extent></physicalDescription><abstract lang="en">This article deals with the following two questions. Are acoustic measurements in running waters appropriate for a highly resolved investigation of the bedload transport? Which characterizations of the bedload regarding mass and shape are possible via the acoustic signals? The signals were recorded by means of data recorders (Tascam Inc. DAP1 Portable Data Recorder) and hydrophones (International Transducer Corp. ITC‐4001 A). The ITC‐4001 is a shallow water omnidirectional transducer containing a flexural disc transducer utilizing Channelite‐5400 ceramics mounted in a rugged corrosion‐resistant housing. These hydrophones were screwed onto the bottom side of stainless steel plates, serving as a contact surface for the bedload in motion above them. After more than 100 series of tests in the laboratory, which indicated the basic relations between the dimension, shape and weight of the bedload and the resulting signal, field tests of the measuring system were conducted. By artificially produced flood waves in the small brooks Riverisbach, Olewiger Bach and by a winter flood wave in the River Moselle, it is possible to elaborate similar structures of the signal course of the bedload movement. The highest transport rates can be observed at the beginning of the increasing limbs and behind the peaks of the waves. At the beginning of the waves, the increasing transport power of the water and the loose material can be considered as the cause for this result. The high stream velocity behind the wave peaks explains the increase in the bedload transport so that material from the channel beds is unfastened and will be mobilized. The characterization of the bedload regarding the shape and mass is still limited regarding the field measurements and could be solved only for homogeneous grain sizes and single stones under laboratory conditions. Copyright © 2007 John Wiley & Sons, Ltd.</abstract><subject lang="en"><genre>keywords</genre><topic>hydrophones</topic><topic>hydro‐acoustics</topic><topic>sediment transport</topic><topic>bedload</topic><topic>flood events</topic></subject><relatedItem type="host"><titleInfo><title>Earth Surface Processes and Landforms</title><subTitle>The Journal of the British Geomorphological Research Group</subTitle></titleInfo><titleInfo type="abbreviated"><title>Earth Surf. Process. 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