Spatial extent and temporal variability of Greenland firn aquifers detected by ground and airborne radars Article Swipe
C. Miège
,
R. R. Forster
,
Ludovic Brucker
,
L. Koenig
,
D. Kip Solomon
,
John Paden
,
Jason E. Box
,
E. W. Burgess
,
Julie Z. Miller
,
Laura McNerney
,
N. Brautigam
,
Robert S. Fausto
,
S. Gogineni
·
YOU?
·
· 2016
· Open Access
·
· DOI: https://doi.org/10.1002/2016jf003869
YOU?
·
· 2016
· Open Access
·
· DOI: https://doi.org/10.1002/2016jf003869
We document the existence of widespread firn aquifers in an elevation range of ~1200–2000 m, in the high snow‐accumulation regions of the Greenland ice sheet. We use NASA Operation IceBridge accumulation radar data from five campaigns (2010–2014) to estimate a firn‐aquifer total extent of 21,900 km 2 . We investigate two locations in Southeast Greenland, where repeated radar profiles allow mapping of aquifer‐extent and water table variations. In the upper part of Helheim Glacier the water table rises in spring following above‐average summer melt, showing the direct firn‐aquifer response to surface meltwater production changes. After spring 2012, a drainage of the firn‐aquifer lower margin (5 km) is inferred from both 750 MHz accumulation radar and 195 MHz multicoherent radar depth sounder data. For 2011–2014, we use a ground‐penetrating radar profile located at our Ridgeline field site and find a spatially stable aquifer with a water table fluctuating less than 2.5 m vertically. When combining radar data with surface topography, we find that the upper elevation edge of firn aquifers is located directly downstream of locally high surface slopes. Using a steady state 2‐D groundwater flow model, water is simulated to flow laterally in an unconfined aquifer, topographically driven by ice sheet surface undulations until the water encounters crevasses. Simulations suggest that local flow cells form within the Helheim aquifer, allowing water to discharge in the firn at the steep‐to‐flat transitions of surface topography. Supported by visible imagery, we infer that water drains into crevasses, but its volume and rate remain unconstrained.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/2016jf003869
- https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/2016JF003869
- OA Status
- bronze
- Cited By
- 118
- References
- 46
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W2556993668
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W2556993668Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1002/2016jf003869Digital Object Identifier
- Title
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Spatial extent and temporal variability of Greenland firn aquifers detected by ground and airborne radarsWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2016Year of publication
- Publication date
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2016-11-16Full publication date if available
- Authors
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C. Miège, R. R. Forster, Ludovic Brucker, L. Koenig, D. Kip Solomon, John Paden, Jason E. Box, E. W. Burgess, Julie Z. Miller, Laura McNerney, N. Brautigam, Robert S. Fausto, S. GogineniList of authors in order
- Landing page
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https://doi.org/10.1002/2016jf003869Publisher landing page
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/2016JF003869Direct link to full text PDF
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YesWhether a free full text is available
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bronzeOpen access status per OpenAlex
- OA URL
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/2016JF003869Direct OA link when available
- Concepts
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Firn, Aquifer, Geology, Meltwater, Glacier, Snow, Water table, Geomorphology, Greenland ice sheet, Radar, Groundwater, Hydrology (agriculture), Geotechnical engineering, Telecommunications, Computer scienceTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
118Total citation count in OpenAlex
- Citations by year (recent)
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2025: 5, 2024: 17, 2023: 12, 2022: 18, 2021: 26Per-year citation counts (last 5 years)
- References (count)
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46Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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| cited_by_percentile_year.max | 100 |
| cited_by_percentile_year.min | 90 |
| corresponding_author_ids | https://openalex.org/A5009819749 |
| countries_distinct_count | 2 |
| institutions_distinct_count | 13 |
| corresponding_institution_ids | https://openalex.org/I223532165 |
| sustainable_development_goals[0].id | https://metadata.un.org/sdg/14 |
| sustainable_development_goals[0].score | 0.41999998688697815 |
| sustainable_development_goals[0].display_name | Life below water |
| citation_normalized_percentile.value | 0.96518682 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | True |