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Analysing riverbed morphology as a response to changes of geological and neotectonic conditions: A case study of the oľšava river Cover

Analysing riverbed morphology as a response to changes of geological and neotectonic conditions: A case study of the oľšava river

Quaestiones Geographicae
Volume 38 (2019): Issue 3 (September 2019)
By: Dušan Barabas and  Matúš Tkáč  
Open Access
|Sep 2019
Figures & tables

Figures & Tables

Fig. 1

Geological and tectonic structure of the Oľšava river catchment (A), geomorphological units of the Oľšava catchment area (B), the location of the basin (C).

Fig. 2

The longitudinal profile of the Oľšava river valley showing the boundaries of the assessed segments. The top of the figure depicts transverse profiles of the Oľšava valley documenting the change in the width of the valley and its asymmetry.

Fig. 3

The average width of the riverbed (left axis) and the depth of the channel (right axis) in the measured Oľšava River longitudinal profile section.

Fig. 4

Bar areas on the left (Sľ), centre (Ss) and right side (Sp).

Fig. 5

Graph of individual parameters in the Oľšava flow measured section.Left axis: total area of bars ΔSl [m2], total area of the channel ΔSvp [m2], flow surface channel ΔS [m2]. Right axis: height/width valley Vf, width/depth water level, and flow surface/area of bars K.

Fig. 6

Graph of the different parameters in the Oľšava measured section.Left axis: section riffle type [m], channel gradient index SL. Right axis: average channel segment slope and degree of sinuosity.

Correlation matrix of the individual Oľšava flow parameters in the segments of the mapped sections_

type river reach [m]average width of river bed [m]area of the bars ΔSl [m2]total area of the channel ΔSvp [m2]water area ΔS [m2]water area/area bars [K]stream gradients [SL]slope segmentsheight/width valley [Vf]sinuosity index
type river reach [m]–
average width of river
bed [m]−0.9089–
area of the bars ΔSl0.00040.3437–
[m2]
total area of the chan-−0.67580.81960.5862–
nel ΔSvp [m2]
water area ΔS [m2]−0.74470.83590.45020.9873–
water area/area bars
[K]−0.81810.5971−0.40020.47330.6001–
stream gradients [SL]0.2060−0.04600.4379−0.0413−0.1313−0.5419–
slope segments0.9576−0.90160.0121−0.6263−0.6926−0.76540.2821–
height/width valley−0.81580.76030.16370.81120.86200.7471 −0.1214−0.7021–
[Vf]
sinuosity index−0.40780.2685−0.5840−0.2729−0.18630.4380 −0.1873−0.44960.0689–
Index width/depth water level0.6817−0.65680.0603−0.2456−0.2827−0.47140.33720. 7426−0.1801−0.5676

Basic parameters of evaluated segments of the longitudinal profile of the Oľšava River_

segmentsaltitude [m a.s.l.]lenghthight/width valley (Vf)stream lenght gradiet index (SL)average slope segments [%]width valley [m]average slope segments [°]sinuosity index
minmax
1174.5175.01675.95.1915.960.0298384.160.017071.030
2175.0200.09856.31.59121.020.2536241.020.145301.495
3200.0207.31490.96.17204.430.48961237.460.280521.042
4207.3222.09051.83.4359.910.16241318.800.093051.604
5222.0265.09686.55.33121.620.44391060.460.254301.569
6265.0305.05795.12.26135.670.6902550.250.395501.212
7305.0456.011692.20.26140.931.291553.000.739901.296
8456.0504.01596.70.08128.313.006210.001.721911.112
9504.0774.03469.70.15135.007.781720.004.449601.056
DOI: https://doi.org/10.2478/quageo-2019-0033 | Journal eISSN: 2081-6383 | Journal ISSN: 2082-2103
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Language: English
Page range: 109 - 122
Submitted on: May 10, 2019
Published on: Sep 10, 2019
Published by: Adam Mickiewicz University
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Oľšava catchment,
longitudinal profile,
deposit forms,
hydro-morphological parameters,
tectonics
Related subjects:
Geosciences,
Geography

© 2019 Dušan Barabas, Matúš Tkáč, published by Adam Mickiewicz University
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 38 (2019): Issue 3 (September 2019)
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