Periglacial gully erosion on the east European plain and its recent analog at the Yamal peninsula
The net of dry valleys, gullies and shallow hollows is typical for the East European Plain. Dense vegetation usually covers their bottoms and slopes, so the modern erosion there is negligible in the pristine conditions. This erosion landscape formed in periglacial conditions during the terminations...
Published in: | GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Lomonosov Moscow State University
2020
|
Subjects: | |
Online Access: | https://doi.org/10.24057/2071-9388-2019-01 https://doaj.org/article/5ebfdba492ae46368d0188d7338d9715 |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:5ebfdba492ae46368d0188d7338d9715 |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:5ebfdba492ae46368d0188d7338d9715 2023-05-15T15:03:51+02:00 Periglacial gully erosion on the east European plain and its recent analog at the Yamal peninsula Alexey Yu. Sidorchuk Tatiana A. Matveeva 2020-04-01 https://doi.org/10.24057/2071-9388-2019-01 https://doaj.org/article/5ebfdba492ae46368d0188d7338d9715 en eng Lomonosov Moscow State University 2071-9388 2542-1565 doi:10.24057/2071-9388-2019-01 https://doaj.org/article/5ebfdba492ae46368d0188d7338d9715 undefined Geography, Environment, Sustainability, Vol 13, Iss 1, Pp 183-194 (2020) the yamal peninsula active gullies east european plain periglacial erosion gully erosion and thermoerosion modelling estimates of past surface runof geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.24057/2071-9388-2019-01 2023-01-22T19:07:10Z The net of dry valleys, gullies and shallow hollows is typical for the East European Plain. Dense vegetation usually covers their bottoms and slopes, so the modern erosion there is negligible in the pristine conditions. This erosion landscape formed in periglacial conditions during the terminations of the last two glaciations. The same kind of the erosion landscape is typical for the Arctic regions, especially for the Yamal, Gydan, and Tazovsky peninsulas. The size and the density of such valleys and gullies are quite similar to those existing on the East European Plain, but these erosion features are active there, especially in the conditions of natural or anthropogenic deterioration of the vegetation cover. As the density of dry valley network is an indicator of hydrological conditions in the river basin, the landscapes of the Arctic regions can be used as the modern analogs of the territories with the past periglacial erosion.The recent hydrological characteristics of the west-central Yamal Peninsula were used to estimate the parameters of erosion network at the Khoper River basin, formed in periglacial conditions. For these purposes gully erosion and thermoerosion model GULTEM was verified and calibrated based on the observation of the modern processes on the Yamal Peninsula. The meteorological characteristics were taken from ERA-Interim Reanalysis grid. To calculate the flow characteristics a synthetic hydrological model was used. These verified and calibrated models were used to find the most suitable characteristics of climate and vegetation cover, which can explain the structure and density of the Perepolye dry valley in the Khoper River basin. This dry valley with the main trunk length of 6400 m was formed at the end of the Late Valdai Glaciation (MIS 2). The conditions required for the formation of a periglacial gully of such length were estimated with the GULTEM model. The critical velocity of erosion initiation was within the range 0.8-0.9 m/s, and the surface runoff depth was close to the recent one ... Article in Journal/Newspaper Arctic Yamal Peninsula Unknown Arctic Tazovsky ENVELOPE(78.716,78.716,67.472,67.472) Yamal Peninsula ENVELOPE(69.873,69.873,70.816,70.816) GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 13 1 183 194 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
the yamal peninsula active gullies east european plain periglacial erosion gully erosion and thermoerosion modelling estimates of past surface runof geo envir |
spellingShingle |
the yamal peninsula active gullies east european plain periglacial erosion gully erosion and thermoerosion modelling estimates of past surface runof geo envir Alexey Yu. Sidorchuk Tatiana A. Matveeva Periglacial gully erosion on the east European plain and its recent analog at the Yamal peninsula |
topic_facet |
the yamal peninsula active gullies east european plain periglacial erosion gully erosion and thermoerosion modelling estimates of past surface runof geo envir |
description |
The net of dry valleys, gullies and shallow hollows is typical for the East European Plain. Dense vegetation usually covers their bottoms and slopes, so the modern erosion there is negligible in the pristine conditions. This erosion landscape formed in periglacial conditions during the terminations of the last two glaciations. The same kind of the erosion landscape is typical for the Arctic regions, especially for the Yamal, Gydan, and Tazovsky peninsulas. The size and the density of such valleys and gullies are quite similar to those existing on the East European Plain, but these erosion features are active there, especially in the conditions of natural or anthropogenic deterioration of the vegetation cover. As the density of dry valley network is an indicator of hydrological conditions in the river basin, the landscapes of the Arctic regions can be used as the modern analogs of the territories with the past periglacial erosion.The recent hydrological characteristics of the west-central Yamal Peninsula were used to estimate the parameters of erosion network at the Khoper River basin, formed in periglacial conditions. For these purposes gully erosion and thermoerosion model GULTEM was verified and calibrated based on the observation of the modern processes on the Yamal Peninsula. The meteorological characteristics were taken from ERA-Interim Reanalysis grid. To calculate the flow characteristics a synthetic hydrological model was used. These verified and calibrated models were used to find the most suitable characteristics of climate and vegetation cover, which can explain the structure and density of the Perepolye dry valley in the Khoper River basin. This dry valley with the main trunk length of 6400 m was formed at the end of the Late Valdai Glaciation (MIS 2). The conditions required for the formation of a periglacial gully of such length were estimated with the GULTEM model. The critical velocity of erosion initiation was within the range 0.8-0.9 m/s, and the surface runoff depth was close to the recent one ... |
format |
Article in Journal/Newspaper |
author |
Alexey Yu. Sidorchuk Tatiana A. Matveeva |
author_facet |
Alexey Yu. Sidorchuk Tatiana A. Matveeva |
author_sort |
Alexey Yu. Sidorchuk |
title |
Periglacial gully erosion on the east European plain and its recent analog at the Yamal peninsula |
title_short |
Periglacial gully erosion on the east European plain and its recent analog at the Yamal peninsula |
title_full |
Periglacial gully erosion on the east European plain and its recent analog at the Yamal peninsula |
title_fullStr |
Periglacial gully erosion on the east European plain and its recent analog at the Yamal peninsula |
title_full_unstemmed |
Periglacial gully erosion on the east European plain and its recent analog at the Yamal peninsula |
title_sort |
periglacial gully erosion on the east european plain and its recent analog at the yamal peninsula |
publisher |
Lomonosov Moscow State University |
publishDate |
2020 |
url |
https://doi.org/10.24057/2071-9388-2019-01 https://doaj.org/article/5ebfdba492ae46368d0188d7338d9715 |
long_lat |
ENVELOPE(78.716,78.716,67.472,67.472) ENVELOPE(69.873,69.873,70.816,70.816) |
geographic |
Arctic Tazovsky Yamal Peninsula |
geographic_facet |
Arctic Tazovsky Yamal Peninsula |
genre |
Arctic Yamal Peninsula |
genre_facet |
Arctic Yamal Peninsula |
op_source |
Geography, Environment, Sustainability, Vol 13, Iss 1, Pp 183-194 (2020) |
op_relation |
2071-9388 2542-1565 doi:10.24057/2071-9388-2019-01 https://doaj.org/article/5ebfdba492ae46368d0188d7338d9715 |
op_rights |
undefined |
op_doi |
https://doi.org/10.24057/2071-9388-2019-01 |
container_title |
GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY |
container_volume |
13 |
container_issue |
1 |
container_start_page |
183 |
op_container_end_page |
194 |
_version_ |
1766335698409881600 |