Hyppää sisältöön
    • Suomeksi
    • In English
  • Suomeksi
  • In English
  • Kirjaudu
Näytä aineisto 
  •   Etusivu
  • 3. UTUCris-artikkelit
  • Rinnakkaistallenteet
  • Näytä aineisto
  •   Etusivu
  • 3. UTUCris-artikkelit
  • Rinnakkaistallenteet
  • Näytä aineisto
JavaScript is disabled for your browser. Some features of this site may not work without it.

Flow Patterns and Morphological Changes in a Sandy Meander Bend during a FloodSpatially and Temporally Intensive ADCP Measurement Approach

Petteri Alho; Elina Kasvi; Eliisa Lotsari; Leena Laamanen

Flow Patterns and Morphological Changes in a Sandy Meander Bend during a FloodSpatially and Temporally Intensive ADCP Measurement Approach

Petteri Alho
Elina Kasvi
Eliisa Lotsari
Leena Laamanen
Katso/Avaa
Publisher's version (9.752Mb)
Lataukset: 

MDPI AG
doi:10.3390/w9020106
Näytä kaikki kuvailutiedot
Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2021042716756
Tiivistelmä

The fluvio-geomorphological processes in meander bends are spatially uneven in

distribution. Typically, higher velocities and erosion take place near the outer bank beyond the

bend apex, while the inner bend point bar grows laterally towards the outer bank, increasing the bend

amplitude. These dynamics maintain the meander evolution. Even though this development is found

in meandering rivers independent of soil or environmental characteristics, each river still seems to

behave unpredictably. The special mechanisms that determine the rate and occasion of morphological

changes remain unclear. The aim of this study is to offer new insights regarding flow-induced

morphological changes in meander using a novel study approach. We focused on short-term and

small-spatial-scale changes by conducting a spatially and temporally (daily) intensive survey during

a flood (a period of nine days) with an ADCP attached to a remotely controlled mini-boat. Based on

our analysis, the flood duration and the rate of discharge increase and decrease seems to play key

roles in determining channel changes by controlling the flow velocities and depth and the backwater

effect may have notable influence on the morphological processes. We discuss themes such as the

interaction of inner and outer bend processes and the longer-term development of meander bends.

Kokoelmat
  • Rinnakkaistallenteet [19168]

Turun yliopiston kirjasto | Turun yliopisto
julkaisut@utu.fi | Tietosuoja | Saavutettavuusseloste
 

 

Tämä kokoelma

JulkaisuajatTekijätNimekkeetAsiasanatTiedekuntaLaitosOppiaineYhteisöt ja kokoelmat

Omat tiedot

Kirjaudu sisäänRekisteröidy

Turun yliopiston kirjasto | Turun yliopisto
julkaisut@utu.fi | Tietosuoja | Saavutettavuusseloste