Morphometric Analysis of Groundwater Icings: Intercomparison of Estimation Techniques
Groundwater icings, typical features of permafrost hydrology, are indicative of hydrothermal interactions between surface and ground waters, and permafrost. Their main morphological parameters, i.e., icing area and volume, are generally estimated with low accuracy. Only scarce field observational da...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , , , , , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2020
|
Subjects: | |
Online Access: | https://doi.org/10.3390/rs12040692 |
id |
ftmdpi:oai:mdpi.com:/2072-4292/12/4/692/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2072-4292/12/4/692/ 2023-08-20T04:07:08+02:00 Morphometric Analysis of Groundwater Icings: Intercomparison of Estimation Techniques Leonid Gagarin Qingbai Wu Andrey Melnikov Nataliya Volgusheva Nikita Tananaev Huijun Jin Ze Zhang Vladimir Zhizhin agris 2020-02-20 application/pdf https://doi.org/10.3390/rs12040692 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/rs12040692 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 12; Issue 4; Pages: 692 groundwater icing sub-permafrost groundwater supra-permafrost groundwater remote sensing UAV-based photogrammetry Sokolov equations of icing morphometry Southern Yakutia Text 2020 ftmdpi https://doi.org/10.3390/rs12040692 2023-07-31T23:08:31Z Groundwater icings, typical features of permafrost hydrology, are indicative of hydrothermal interactions between surface and ground waters, and permafrost. Their main morphological parameters, i.e., icing area and volume, are generally estimated with low accuracy. Only scarce field observational data on icing volume and seasonal development exist to date. Our study evaluates and compares performance of several widely used techniques of icing morphometric estimation, based on field data, collected on a giant Icing #2 in the Samokit River basin, southern Yakutia. Groundwater icing area was estimated by: (a) staking, (b) unmanned aerial vehicle (UAV) surveys, and (c) satellite imagery analysis. Icing #2 area in late February was between 1.38·106 m2 and 1.68·106 m2, icing volume, between 1.73·106 m3 and 4.20·106 m3, depending on the technique used. Staking is the least accurate, but also the only direct technique, which is hence used as a baseline tool in our study. Staking-based assessment of icing morphometry is the most conservative, while UAV-based estimates of icing area are higher by 14% to 17%, and of icing volume, by 74% to 142%, compared to staking. The latter appears, in our case, to be the least accurate method, although a direct one. It requires a sufficient number of staking points and transects, which should be set up to represent all icing zones, i.e., channel branches and alluvial islands. Photogrammetry based on UAV surveys has numerous advantages, i.e., higher precision of a per pixel icing volume calculation, based on an ice-free valley bottom digital surface model (DSM), and potential reusability of a resulting DSM. However, positioning precision suffers from the overlay of multiple flyovers required because of battery replacements, and, in our case, an insufficient number of ground control points. Satellite imagery along with B.L. Sokolov’s empirical approach were used to estimate the annual maximum icing area and volume, and the empirical estimates tend to converge to satellite-based values. ... Text Ice permafrost Yakutia MDPI Open Access Publishing Remote Sensing 12 4 692 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
groundwater icing sub-permafrost groundwater supra-permafrost groundwater remote sensing UAV-based photogrammetry Sokolov equations of icing morphometry Southern Yakutia |
spellingShingle |
groundwater icing sub-permafrost groundwater supra-permafrost groundwater remote sensing UAV-based photogrammetry Sokolov equations of icing morphometry Southern Yakutia Leonid Gagarin Qingbai Wu Andrey Melnikov Nataliya Volgusheva Nikita Tananaev Huijun Jin Ze Zhang Vladimir Zhizhin Morphometric Analysis of Groundwater Icings: Intercomparison of Estimation Techniques |
topic_facet |
groundwater icing sub-permafrost groundwater supra-permafrost groundwater remote sensing UAV-based photogrammetry Sokolov equations of icing morphometry Southern Yakutia |
description |
Groundwater icings, typical features of permafrost hydrology, are indicative of hydrothermal interactions between surface and ground waters, and permafrost. Their main morphological parameters, i.e., icing area and volume, are generally estimated with low accuracy. Only scarce field observational data on icing volume and seasonal development exist to date. Our study evaluates and compares performance of several widely used techniques of icing morphometric estimation, based on field data, collected on a giant Icing #2 in the Samokit River basin, southern Yakutia. Groundwater icing area was estimated by: (a) staking, (b) unmanned aerial vehicle (UAV) surveys, and (c) satellite imagery analysis. Icing #2 area in late February was between 1.38·106 m2 and 1.68·106 m2, icing volume, between 1.73·106 m3 and 4.20·106 m3, depending on the technique used. Staking is the least accurate, but also the only direct technique, which is hence used as a baseline tool in our study. Staking-based assessment of icing morphometry is the most conservative, while UAV-based estimates of icing area are higher by 14% to 17%, and of icing volume, by 74% to 142%, compared to staking. The latter appears, in our case, to be the least accurate method, although a direct one. It requires a sufficient number of staking points and transects, which should be set up to represent all icing zones, i.e., channel branches and alluvial islands. Photogrammetry based on UAV surveys has numerous advantages, i.e., higher precision of a per pixel icing volume calculation, based on an ice-free valley bottom digital surface model (DSM), and potential reusability of a resulting DSM. However, positioning precision suffers from the overlay of multiple flyovers required because of battery replacements, and, in our case, an insufficient number of ground control points. Satellite imagery along with B.L. Sokolov’s empirical approach were used to estimate the annual maximum icing area and volume, and the empirical estimates tend to converge to satellite-based values. ... |
format |
Text |
author |
Leonid Gagarin Qingbai Wu Andrey Melnikov Nataliya Volgusheva Nikita Tananaev Huijun Jin Ze Zhang Vladimir Zhizhin |
author_facet |
Leonid Gagarin Qingbai Wu Andrey Melnikov Nataliya Volgusheva Nikita Tananaev Huijun Jin Ze Zhang Vladimir Zhizhin |
author_sort |
Leonid Gagarin |
title |
Morphometric Analysis of Groundwater Icings: Intercomparison of Estimation Techniques |
title_short |
Morphometric Analysis of Groundwater Icings: Intercomparison of Estimation Techniques |
title_full |
Morphometric Analysis of Groundwater Icings: Intercomparison of Estimation Techniques |
title_fullStr |
Morphometric Analysis of Groundwater Icings: Intercomparison of Estimation Techniques |
title_full_unstemmed |
Morphometric Analysis of Groundwater Icings: Intercomparison of Estimation Techniques |
title_sort |
morphometric analysis of groundwater icings: intercomparison of estimation techniques |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/rs12040692 |
op_coverage |
agris |
genre |
Ice permafrost Yakutia |
genre_facet |
Ice permafrost Yakutia |
op_source |
Remote Sensing; Volume 12; Issue 4; Pages: 692 |
op_relation |
https://dx.doi.org/10.3390/rs12040692 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs12040692 |
container_title |
Remote Sensing |
container_volume |
12 |
container_issue |
4 |
container_start_page |
692 |
_version_ |
1774718584508907520 |