Aggregated conceptual model of sediment transport for mountain basins in Antioquia- Colombia
An aggregated model to estimate mean denudation rates of tropical mountain basins with limited data is presented, which is calibrated for Antioquia (Colombia); based on the transport equation of Engelund-Hansen. Two complementary approaches are purposed: (1) alluvial river reach model, dependent on...
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| Veröffentlicht in: | Boletiín de ciencias de la tierra 2016-01 (39), p.38 |
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| creator | Cataño-Álvarez, Santiago Jaime Ignacio Vélez Upegui |
| description | An aggregated model to estimate mean denudation rates of tropical mountain basins with limited data is presented, which is calibrated for Antioquia (Colombia); based on the transport equation of Engelund-Hansen. Two complementary approaches are purposed: (1) alluvial river reach model, dependent on discharge, slope and hydraulic geometry and (2) hillslope model dependent on discharge minus base flow, slope, drainage density and flow convergence degree. Both models are closed with a regression for the Shields parameter, depending on sediment yield (t/km2/yr) and an erodibility factor, which is considered robust due to the diversity of scale, morphology and weather of the 23 basins analyzed. Both model approaches predicts inside a +/- 50% margin of error the sediment yields of 70% of the basins, those with less peculiarities; correcting it with a bed load portion, additional to the suspended transport measured, analytically estimated and proved with field data. |
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Two complementary approaches are purposed: (1) alluvial river reach model, dependent on discharge, slope and hydraulic geometry and (2) hillslope model dependent on discharge minus base flow, slope, drainage density and flow convergence degree. Both models are closed with a regression for the Shields parameter, depending on sediment yield (t/km2/yr) and an erodibility factor, which is considered robust due to the diversity of scale, morphology and weather of the 23 basins analyzed. Both model approaches predicts inside a +/- 50% margin of error the sediment yields of 70% of the basins, those with less peculiarities; correcting it with a bed load portion, additional to the suspended transport measured, analytically estimated and proved with field data.</description><identifier>ISSN: 0120-3630</identifier><identifier>EISSN: 2357-3740</identifier><language>spa</language><publisher>Bogota: Universidad Nacional de Colombia</publisher><subject>Alluvial rivers ; Base flow ; Bed load ; Denudation ; Drainage density ; Hydraulic geometry ; Mountains ; Sediment transport ; Sediment yield ; Sediments ; Slope stability ; Soil erosion ; Suspended load</subject><ispartof>Boletiín de ciencias de la tierra, 2016-01 (39), p.38</ispartof><rights>Copyright Universidad Nacional de Colombia 2016</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780</link.rule.ids></links><search><creatorcontrib>Cataño-Álvarez, Santiago</creatorcontrib><creatorcontrib>Jaime Ignacio Vélez Upegui</creatorcontrib><title>Aggregated conceptual model of sediment transport for mountain basins in Antioquia- Colombia</title><title>Boletiín de ciencias de la tierra</title><description>An aggregated model to estimate mean denudation rates of tropical mountain basins with limited data is presented, which is calibrated for Antioquia (Colombia); based on the transport equation of Engelund-Hansen. 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Both model approaches predicts inside a +/- 50% margin of error the sediment yields of 70% of the basins, those with less peculiarities; correcting it with a bed load portion, additional to the suspended transport measured, analytically estimated and proved with field data.</description><subject>Alluvial rivers</subject><subject>Base flow</subject><subject>Bed load</subject><subject>Denudation</subject><subject>Drainage density</subject><subject>Hydraulic geometry</subject><subject>Mountains</subject><subject>Sediment transport</subject><subject>Sediment yield</subject><subject>Sediments</subject><subject>Slope stability</subject><subject>Soil erosion</subject><subject>Suspended load</subject><issn>0120-3630</issn><issn>2357-3740</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqNiksKwjAUAIMoWD93eOA6kCa1WZeieACXQoltWlLSvJrP_c3CA7iagZkNKbi4SipkxbakYCVnVNSC7ckhhJmxWjLJC_JqpsnrSUU9QI-u12tMysKCg7aAIwQ9mEW7CNErF1b0EUb0uScXlXHwVsG4ANkaFw1-klEUWrS4vI06kd2obNDnH4_kcr892wddfT51iN2MybuculLKUoq6qrj47_oCGBFFFQ</recordid><startdate>20160101</startdate><enddate>20160101</enddate><creator>Cataño-Álvarez, Santiago</creator><creator>Jaime Ignacio Vélez Upegui</creator><general>Universidad Nacional de Colombia</general><scope>3V.</scope><scope>7XB</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>CLZPN</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>M2O</scope><scope>MBDVC</scope><scope>PADUT</scope><scope>PCBAR</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope></search><sort><creationdate>20160101</creationdate><title>Aggregated conceptual model of sediment transport for mountain basins in Antioquia- Colombia</title><author>Cataño-Álvarez, Santiago ; 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| ispartof | Boletiín de ciencias de la tierra, 2016-01 (39), p.38 |
| issn | 0120-3630 2357-3740 |
| language | spa |
| recordid | cdi_proquest_journals_1771736442 |
| source | DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | Alluvial rivers Base flow Bed load Denudation Drainage density Hydraulic geometry Mountains Sediment transport Sediment yield Sediments Slope stability Soil erosion Suspended load |
| title | Aggregated conceptual model of sediment transport for mountain basins in Antioquia- Colombia |
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