A comprehensive view of sedimentation and erosion processes in small reservoirs: a case study of the Pocheň reservoir, Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73621696" target="_blank" >RIV/61989592:15310/23:73621696 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.tandfonline.com/doi/epdf/10.1080/02626667.2023.2187298" target="_blank" >https://www.tandfonline.com/doi/epdf/10.1080/02626667.2023.2187298</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/02626667.2023.2187298" target="_blank" >10.1080/02626667.2023.2187298</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A comprehensive view of sedimentation and erosion processes in small reservoirs: a case study of the Pocheň reservoir, Czech Republic

Popis výsledku v původním jazyce

This article focuses on the need to improve current knowledge of sedimentation and erosion processes in small reservoirs using the example of the Pocheň reservoir (Czech Republic). We combined data from sediment cores with unmanned aerial vehicle imaging and ground-penetrating radar survey data. The results show a distinct sediment distribution, grain-size gradient, petrophysical properties, and geochemistry. Sediment thickness increases in the proximal-to-distal direction (from the inflow to the dam) with frequent erosion near the inflow, especially during floods. This contributed to the sediment relocation towards distal sites with a tendency towards downstream accretion. After reservoir flushing, sedimentation processes were replaced by drawdown-enhanced erosion. Considerable erosion occurred along a temporary drawdown channel, resulting in headward erosion and channel incision. Lateral erosion resulted in drawdown-channel widening. The most extensive lateral erosion took place in the middle part of the reservoir, where the channel created a complex multichannel-branched system.

Název v anglickém jazyce

A comprehensive view of sedimentation and erosion processes in small reservoirs: a case study of the Pocheň reservoir, Czech Republic

Popis výsledku anglicky

This article focuses on the need to improve current knowledge of sedimentation and erosion processes in small reservoirs using the example of the Pocheň reservoir (Czech Republic). We combined data from sediment cores with unmanned aerial vehicle imaging and ground-penetrating radar survey data. The results show a distinct sediment distribution, grain-size gradient, petrophysical properties, and geochemistry. Sediment thickness increases in the proximal-to-distal direction (from the inflow to the dam) with frequent erosion near the inflow, especially during floods. This contributed to the sediment relocation towards distal sites with a tendency towards downstream accretion. After reservoir flushing, sedimentation processes were replaced by drawdown-enhanced erosion. Considerable erosion occurred along a temporary drawdown channel, resulting in headward erosion and channel incision. Lateral erosion resulted in drawdown-channel widening. The most extensive lateral erosion took place in the middle part of the reservoir, where the channel created a complex multichannel-branched system.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES

ISSN

0262-6667

e-ISSN

2150-3435

Svazek periodika

68

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

685-699

Kód UT WoS článku

000959158900001

EID výsledku v databázi Scopus

2-s2.0-85152028613