Regional differences in the sinuosity of rivers in Finland
The aim of this study is to deal with the terminology used in describing the sinuosity of rivers and to focus attention on the terms used. The term meandering only describes the quality of sinuosity, i.e. regular and smooth winding. It does not describe the degree of sinuosity. Mueller's (1968)...
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Geographical Society of Finland
1972
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ftdoajarticles:oai:doaj.org/article:055d972acc7d479f998e8939dc260a82 2023-05-15T15:09:22+02:00 Regional differences in the sinuosity of rivers in Finland Hannu Mansikkamäki 1972-01-01T00:00:00Z https://doaj.org/article/055d972acc7d479f998e8939dc260a82 EN eng Geographical Society of Finland https://fennia.journal.fi/article/view/9236 https://doaj.org/toc/1798-5617 1798-5617 https://doaj.org/article/055d972acc7d479f998e8939dc260a82 Fennia: International Journal of Geography, Vol 118, Iss 1 (1972) Geography (General) G1-922 article 1972 ftdoajarticles 2022-12-30T21:56:33Z The aim of this study is to deal with the terminology used in describing the sinuosity of rivers and to focus attention on the terms used. The term meandering only describes the quality of sinuosity, i.e. regular and smooth winding. It does not describe the degree of sinuosity. Mueller's (1968) sinuosity indices have certain drawbacks. Using a method to determine the degree and quality of sinuosity (Mansikkaniemi 1970 a) 81 of the most important rivers in Finland were analyzed. There are about 5 % very straight, about 20 % straight, about 40 % winding, about 20 % sinuous and about 10 % very sinuous of the rivers in Finland. There is great variety in how the degree of sinuosity varies in different parts of the rivers. The rivers may be classified according to the variations in the degree of sinuosity into homogeneous, >>normal>> and heterogeneous. The lower courses of the rivers are clearly straighter than the middle and the upper courses. Regional differences in mean river sinuosity are rather great in Finland. Mean sinuosity is greatest in the Kemijoki area, 35 %, and smallest in the rivers flowing to the Arctic Ocean, 22 %. The degree of sinuosity has very little dependence on the magnitude of the river gradient and on the width of river valley. In general it may be said that the topography of the hard crystalline bedrock is almost the only factor having the decisive effect on the degree of river sinuosity in Finland. This is illustrated by means of simple models. Article in Journal/Newspaper Arctic Arctic Ocean Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Kemijoki ENVELOPE(24.500,24.500,65.783,65.783) |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Hannu Mansikkamäki Regional differences in the sinuosity of rivers in Finland |
topic_facet |
Geography (General) G1-922 |
description |
The aim of this study is to deal with the terminology used in describing the sinuosity of rivers and to focus attention on the terms used. The term meandering only describes the quality of sinuosity, i.e. regular and smooth winding. It does not describe the degree of sinuosity. Mueller's (1968) sinuosity indices have certain drawbacks. Using a method to determine the degree and quality of sinuosity (Mansikkaniemi 1970 a) 81 of the most important rivers in Finland were analyzed. There are about 5 % very straight, about 20 % straight, about 40 % winding, about 20 % sinuous and about 10 % very sinuous of the rivers in Finland. There is great variety in how the degree of sinuosity varies in different parts of the rivers. The rivers may be classified according to the variations in the degree of sinuosity into homogeneous, >>normal>> and heterogeneous. The lower courses of the rivers are clearly straighter than the middle and the upper courses. Regional differences in mean river sinuosity are rather great in Finland. Mean sinuosity is greatest in the Kemijoki area, 35 %, and smallest in the rivers flowing to the Arctic Ocean, 22 %. The degree of sinuosity has very little dependence on the magnitude of the river gradient and on the width of river valley. In general it may be said that the topography of the hard crystalline bedrock is almost the only factor having the decisive effect on the degree of river sinuosity in Finland. This is illustrated by means of simple models. |
format |
Article in Journal/Newspaper |
author |
Hannu Mansikkamäki |
author_facet |
Hannu Mansikkamäki |
author_sort |
Hannu Mansikkamäki |
title |
Regional differences in the sinuosity of rivers in Finland |
title_short |
Regional differences in the sinuosity of rivers in Finland |
title_full |
Regional differences in the sinuosity of rivers in Finland |
title_fullStr |
Regional differences in the sinuosity of rivers in Finland |
title_full_unstemmed |
Regional differences in the sinuosity of rivers in Finland |
title_sort |
regional differences in the sinuosity of rivers in finland |
publisher |
Geographical Society of Finland |
publishDate |
1972 |
url |
https://doaj.org/article/055d972acc7d479f998e8939dc260a82 |
long_lat |
ENVELOPE(24.500,24.500,65.783,65.783) |
geographic |
Arctic Arctic Ocean Kemijoki |
geographic_facet |
Arctic Arctic Ocean Kemijoki |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Fennia: International Journal of Geography, Vol 118, Iss 1 (1972) |
op_relation |
https://fennia.journal.fi/article/view/9236 https://doaj.org/toc/1798-5617 1798-5617 https://doaj.org/article/055d972acc7d479f998e8939dc260a82 |
_version_ |
1766340578896773120 |