Investigating Subsurface Flow Delivery to a Small High Arctic River
Preferential flow pathways and hydraulic gradients along the hillslope-floodplain-channel continuum are dominant controls on the delivery of baseflow, stormflow and solutes to channels in temperate systems. Arctic systems are increasingly being shown to possess similar delivery mechanisms, however t...
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ftqueensuniv:oai:https://qspace.library.queensu.ca:1974/25945 2024-06-02T08:01:11+00:00 Investigating Subsurface Flow Delivery to a Small High Arctic River Gillman, Matthew Geography and Planning 2019-01-28T16:55:38Z application/pdf http://hdl.handle.net/1974/25945 eng eng Canadian theses http://hdl.handle.net/1974/25945 Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada ProQuest PhD and Master's Theses International Dissemination Agreement Intellectual Property Guidelines at Queen's University Copying and Preserving Your Thesis This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner. Subsurface Flow Permafrost Hydrology Preferential Flow Pathways thesis 2019 ftqueensuniv 2024-05-06T10:47:32Z Preferential flow pathways and hydraulic gradients along the hillslope-floodplain-channel continuum are dominant controls on the delivery of baseflow, stormflow and solutes to channels in temperate systems. Arctic systems are increasingly being shown to possess similar delivery mechanisms, however the topic is understudied, acutely so in the High Arctic. This work assesses the nature of delivery mechanisms in the High Arctic over the thaw season and in response to rainfall at the Cape Bounty Arctic Watershed Observatory (CBAWO). Two locations of persistent preferential subsurface inputs were observed over a 200 m section the study reach, one at the outlet of a previously active channel through the floodplain, and another at the outlet of a channelized sub-catchment. During baseflow, these inputs provided solute-rich, relatively cold water to streamflow. During stormflow, subsurface inputs remain active and in the case of the sub-catchment, there was evidence for increased flux of pre-event soil water. Over the 320 m study reach, heterogeneity in the nature of hydraulic gradients, in how gradients developed over the season, and in how gradients responded to rainfall was observed. Two monitored hydraulic gradients exhibited reversal of inferred flow direction; one due to rainfall and the other as the thaw season progressed. Economic feasibility of hydrological investigations concerning total dissolved solids and electrical conductivity (EC) becomes an issue when spatial and temporal scales increase, especially when the objective is to capture the variability inherent within aquatic systems. Chapin et al. (2014) presented a modified version of the Onset HOBO Pendant waterproof temperature and light logger with the ability to assess relative EC, however it was not dimensional EC (i.e. µS/cm). This work demonstrates these economical loggers can be calibrated and applied to quantify EC in the field with accuracies comparable to commercial loggers. M.Sc. Thesis Arctic permafrost Queen's University, Ontario: QSpace Arctic Cape Bounty ENVELOPE(-109.542,-109.542,74.863,74.863) |
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Open Polar |
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Queen's University, Ontario: QSpace |
op_collection_id |
ftqueensuniv |
language |
English |
topic |
Subsurface Flow Permafrost Hydrology Preferential Flow Pathways |
spellingShingle |
Subsurface Flow Permafrost Hydrology Preferential Flow Pathways Gillman, Matthew Investigating Subsurface Flow Delivery to a Small High Arctic River |
topic_facet |
Subsurface Flow Permafrost Hydrology Preferential Flow Pathways |
description |
Preferential flow pathways and hydraulic gradients along the hillslope-floodplain-channel continuum are dominant controls on the delivery of baseflow, stormflow and solutes to channels in temperate systems. Arctic systems are increasingly being shown to possess similar delivery mechanisms, however the topic is understudied, acutely so in the High Arctic. This work assesses the nature of delivery mechanisms in the High Arctic over the thaw season and in response to rainfall at the Cape Bounty Arctic Watershed Observatory (CBAWO). Two locations of persistent preferential subsurface inputs were observed over a 200 m section the study reach, one at the outlet of a previously active channel through the floodplain, and another at the outlet of a channelized sub-catchment. During baseflow, these inputs provided solute-rich, relatively cold water to streamflow. During stormflow, subsurface inputs remain active and in the case of the sub-catchment, there was evidence for increased flux of pre-event soil water. Over the 320 m study reach, heterogeneity in the nature of hydraulic gradients, in how gradients developed over the season, and in how gradients responded to rainfall was observed. Two monitored hydraulic gradients exhibited reversal of inferred flow direction; one due to rainfall and the other as the thaw season progressed. Economic feasibility of hydrological investigations concerning total dissolved solids and electrical conductivity (EC) becomes an issue when spatial and temporal scales increase, especially when the objective is to capture the variability inherent within aquatic systems. Chapin et al. (2014) presented a modified version of the Onset HOBO Pendant waterproof temperature and light logger with the ability to assess relative EC, however it was not dimensional EC (i.e. µS/cm). This work demonstrates these economical loggers can be calibrated and applied to quantify EC in the field with accuracies comparable to commercial loggers. M.Sc. |
author2 |
Geography and Planning |
format |
Thesis |
author |
Gillman, Matthew |
author_facet |
Gillman, Matthew |
author_sort |
Gillman, Matthew |
title |
Investigating Subsurface Flow Delivery to a Small High Arctic River |
title_short |
Investigating Subsurface Flow Delivery to a Small High Arctic River |
title_full |
Investigating Subsurface Flow Delivery to a Small High Arctic River |
title_fullStr |
Investigating Subsurface Flow Delivery to a Small High Arctic River |
title_full_unstemmed |
Investigating Subsurface Flow Delivery to a Small High Arctic River |
title_sort |
investigating subsurface flow delivery to a small high arctic river |
publishDate |
2019 |
url |
http://hdl.handle.net/1974/25945 |
long_lat |
ENVELOPE(-109.542,-109.542,74.863,74.863) |
geographic |
Arctic Cape Bounty |
geographic_facet |
Arctic Cape Bounty |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_relation |
Canadian theses http://hdl.handle.net/1974/25945 |
op_rights |
Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada ProQuest PhD and Master's Theses International Dissemination Agreement Intellectual Property Guidelines at Queen's University Copying and Preserving Your Thesis This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner. |
_version_ |
1800745488921657344 |