Water Sources and Hydrodynamics of Closed-Basin Depressions, Cook Inlet Region, Alaska
Among the most prevalent wetland and deep-water habitats in Alaska are ponds, many of which are subarctic ponds occurring as moraine, ice-scour, or dead-ice depressions. Many are closed-basin depressions, where surface-water inflows and outflows are negligible. The objective of this study was to qua...
Published in: | Wetlands |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Digital Commons @ University of South Florida
2011
|
Subjects: | |
Online Access: | https://digitalcommons.usf.edu/geo_facpub/178 https://doi.org/10.1007/s13157-011-0147-x |
id |
ftunisfloridatam:oai:digitalcommons.usf.edu:geo_facpub-1177 |
---|---|
record_format |
openpolar |
spelling |
ftunisfloridatam:oai:digitalcommons.usf.edu:geo_facpub-1177 2024-09-15T18:37:53+00:00 Water Sources and Hydrodynamics of Closed-Basin Depressions, Cook Inlet Region, Alaska Rains, Mark c. 2011-04-01T07:00:00Z https://digitalcommons.usf.edu/geo_facpub/178 https://doi.org/10.1007/s13157-011-0147-x unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/geo_facpub/178 doi:10.1007/s13157-011-0147-x https://doi.org/10.1007/s13157-011-0147-x default School of Geosciences Faculty and Staff Publications Glacial environments Groundwater recharge Subarctic ponds Wetland and deep-water habitats Wetland hydrology article 2011 ftunisfloridatam https://doi.org/10.1007/s13157-011-0147-x 2024-08-23T08:09:15Z Among the most prevalent wetland and deep-water habitats in Alaska are ponds, many of which are subarctic ponds occurring as moraine, ice-scour, or dead-ice depressions. Many are closed-basin depressions, where surface-water inflows and outflows are negligible. The objective of this study was to quantify the water sources and hydrodynamics of these subarctic ponds, particularly with respect to the role they play in groundwater recharge. There are two types of ponds on the study site. Perched-precipitation ponds have inflows by melt water and direct precipitation, outflows by evapotranspiration and groundwater recharge, and are seasonally inundated because surface water is perched above the water table and infiltration through the low-permeability surficial deposits to the water table is slow. Flow-through ponds have inflows by melt water, direct precipitation, and groundwater discharge, outflows by evapotranspiration and groundwater recharge, and are perennially inundated because of groundwater throughflow. Both are groundwater recharge focal points. This is particularly true for perched-precipitation ponds, where net groundwater recharge rates were 215% larger than in flow-through ponds, and 332% larger than in the broader landscape. Most of the additional groundwater recharge occurs immediately following breakup, as aeolian-transported snow trapped in the depressions melts which results in enhanced groundwater recharge rates. Article in Journal/Newspaper Subarctic Alaska Digital Commons University of South Florida (USF) Wetlands 31 2 377 387 |
institution |
Open Polar |
collection |
Digital Commons University of South Florida (USF) |
op_collection_id |
ftunisfloridatam |
language |
unknown |
topic |
Glacial environments Groundwater recharge Subarctic ponds Wetland and deep-water habitats Wetland hydrology |
spellingShingle |
Glacial environments Groundwater recharge Subarctic ponds Wetland and deep-water habitats Wetland hydrology Rains, Mark c. Water Sources and Hydrodynamics of Closed-Basin Depressions, Cook Inlet Region, Alaska |
topic_facet |
Glacial environments Groundwater recharge Subarctic ponds Wetland and deep-water habitats Wetland hydrology |
description |
Among the most prevalent wetland and deep-water habitats in Alaska are ponds, many of which are subarctic ponds occurring as moraine, ice-scour, or dead-ice depressions. Many are closed-basin depressions, where surface-water inflows and outflows are negligible. The objective of this study was to quantify the water sources and hydrodynamics of these subarctic ponds, particularly with respect to the role they play in groundwater recharge. There are two types of ponds on the study site. Perched-precipitation ponds have inflows by melt water and direct precipitation, outflows by evapotranspiration and groundwater recharge, and are seasonally inundated because surface water is perched above the water table and infiltration through the low-permeability surficial deposits to the water table is slow. Flow-through ponds have inflows by melt water, direct precipitation, and groundwater discharge, outflows by evapotranspiration and groundwater recharge, and are perennially inundated because of groundwater throughflow. Both are groundwater recharge focal points. This is particularly true for perched-precipitation ponds, where net groundwater recharge rates were 215% larger than in flow-through ponds, and 332% larger than in the broader landscape. Most of the additional groundwater recharge occurs immediately following breakup, as aeolian-transported snow trapped in the depressions melts which results in enhanced groundwater recharge rates. |
format |
Article in Journal/Newspaper |
author |
Rains, Mark c. |
author_facet |
Rains, Mark c. |
author_sort |
Rains, Mark c. |
title |
Water Sources and Hydrodynamics of Closed-Basin Depressions, Cook Inlet Region, Alaska |
title_short |
Water Sources and Hydrodynamics of Closed-Basin Depressions, Cook Inlet Region, Alaska |
title_full |
Water Sources and Hydrodynamics of Closed-Basin Depressions, Cook Inlet Region, Alaska |
title_fullStr |
Water Sources and Hydrodynamics of Closed-Basin Depressions, Cook Inlet Region, Alaska |
title_full_unstemmed |
Water Sources and Hydrodynamics of Closed-Basin Depressions, Cook Inlet Region, Alaska |
title_sort |
water sources and hydrodynamics of closed-basin depressions, cook inlet region, alaska |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2011 |
url |
https://digitalcommons.usf.edu/geo_facpub/178 https://doi.org/10.1007/s13157-011-0147-x |
genre |
Subarctic Alaska |
genre_facet |
Subarctic Alaska |
op_source |
School of Geosciences Faculty and Staff Publications |
op_relation |
https://digitalcommons.usf.edu/geo_facpub/178 doi:10.1007/s13157-011-0147-x https://doi.org/10.1007/s13157-011-0147-x |
op_rights |
default |
op_doi |
https://doi.org/10.1007/s13157-011-0147-x |
container_title |
Wetlands |
container_volume |
31 |
container_issue |
2 |
container_start_page |
377 |
op_container_end_page |
387 |
_version_ |
1810482233086050304 |