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Geomorphology and sediment dynamics of a humid tropical montane river, Rio Pacuare, Costa Rica.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Geomorphology and sediment dynamics of a humid tropical montane river, Rio Pacuare, Costa Rica./
Author:	Lind, Pollyanna.
Description:	1 online resource (228 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 78-07(E), Section: B.
Subject:	Geomorphology. -
Online resource:	click for full text (PQDT)
ISBN:	9781369610260

Geomorphology and sediment dynamics of a humid tropical montane river, Rio Pacuare, Costa Rica.
Lind, Pollyanna.

Geomorphology and sediment dynamics of a humid tropical montane river, Rio Pacuare, Costa Rica. - 1 online resource (228 pages)

Source: Dissertation Abstracts International, Volume: 78-07(E), Section: B.

Thesis (Ph.D.)--University of Oregon, 2016.

Includes bibliographical references

Only a small body of work currently exists regarding the geomorphology of humid tropical montane rivers. The research that does exist reports rapid geomorphic processes and high sediment loads compared to other montane rivers. This research applies traditional field survey methods combined with new applications of remote sensing techniques to examine the geomorphology and sediment dynamics of the montane portions of the Rio Pacuare in Costa Rica. A suite of geomorphic components (channel slope and width, lateral contributions and planform) are examined and a model presented that illustrates the complexity of the Rio Pacuare's geomorphology and how the distribution of alluvial sediment varies in relation to geology (tectonics and lithology) and flow hydraulics (stream power). Next, average annual bedload sediment transport capacity is estimated using fifty-one years of daily discharge data at six different locations within the study area, including the temporal (monthly) variability of sediment flux due to dry versus wet season discharge regimes. Then, a time-step hydraulic model is created that simulates observed (modern) and potential future discharge scenarios based on regional climate change model results. The simulated discharge data for two locations within the study area is then integrated into the sediment transport model to examine how sediment flux, and thus channel geomorphology, is likely to change in response to changes in the river's discharge regime.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369610260Subjects--Topical Terms:

566098
Geomorphology.
Index Terms--Genre/Form:

554714
Electronic books.

Geomorphology and sediment dynamics of a humid tropical montane river, Rio Pacuare, Costa Rica.
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020 $a 9781369610260
035 $a (MiAaPQ)AAI10194976
035 $a (MiAaPQ)oregon:11737
035 $a AAI10194976
040 $a MiAaPQ $b eng $c MiAaPQ
100 1 $a Lind, Pollyanna. $3 1185589
245 1 0 $a Geomorphology and sediment dynamics of a humid tropical montane river, Rio Pacuare, Costa Rica.
264 0 $c 2016
300 $a 1 online resource (228 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertation Abstracts International, Volume: 78-07(E), Section: B.
500 $a Adviser: Patricia McDowell.
502 $a Thesis (Ph.D.)--University of Oregon, 2016.
504 $a Includes bibliographical references
520 $a Only a small body of work currently exists regarding the geomorphology of humid tropical montane rivers. The research that does exist reports rapid geomorphic processes and high sediment loads compared to other montane rivers. This research applies traditional field survey methods combined with new applications of remote sensing techniques to examine the geomorphology and sediment dynamics of the montane portions of the Rio Pacuare in Costa Rica. A suite of geomorphic components (channel slope and width, lateral contributions and planform) are examined and a model presented that illustrates the complexity of the Rio Pacuare's geomorphology and how the distribution of alluvial sediment varies in relation to geology (tectonics and lithology) and flow hydraulics (stream power). Next, average annual bedload sediment transport capacity is estimated using fifty-one years of daily discharge data at six different locations within the study area, including the temporal (monthly) variability of sediment flux due to dry versus wet season discharge regimes. Then, a time-step hydraulic model is created that simulates observed (modern) and potential future discharge scenarios based on regional climate change model results. The simulated discharge data for two locations within the study area is then integrated into the sediment transport model to examine how sediment flux, and thus channel geomorphology, is likely to change in response to changes in the river's discharge regime.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Geomorphology. $3 566098
655 7 $a Electronic books. $2 local $3 554714
690 $a 0484
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of Oregon. $b Department of Geography. $3 1185590
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10194976 $z click for full text (PQDT)