Proglacial river stage derived from georectified time-lapse camera images, Inglefield Land, Northwest Greenland
The Greenland Ice Sheet is a leading source of global sea level rise, due to surface meltwater runoff and glacier calving. However, given a scarcity of proglacial river gauge measurements, ice sheet runoff remains poorly quantified. This lack of in situ observations is particularly acute in Northwes...
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Online Access: | http://dx.doi.org/10.3389/feart.2023.960363 https://www.frontiersin.org/articles/10.3389/feart.2023.960363/full |
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crfrontiers:10.3389/feart.2023.960363 2024-02-11T10:04:01+01:00 Proglacial river stage derived from georectified time-lapse camera images, Inglefield Land, Northwest Greenland Goldstein, Seth N. Ryan, Jonathan C. How, Penelope R. Esenther, Sarah E. Pitcher, Lincoln H. LeWinter, Adam L. Overstreet, Brandon T. Kyzivat, Ethan D. Fayne, Jessica V. Smith, Laurence C. Institute at Brown for Environment and Society, Brown University 2023 http://dx.doi.org/10.3389/feart.2023.960363 https://www.frontiersin.org/articles/10.3389/feart.2023.960363/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Earth Science volume 11 ISSN 2296-6463 General Earth and Planetary Sciences journal-article 2023 crfrontiers https://doi.org/10.3389/feart.2023.960363 2024-01-26T09:57:59Z The Greenland Ice Sheet is a leading source of global sea level rise, due to surface meltwater runoff and glacier calving. However, given a scarcity of proglacial river gauge measurements, ice sheet runoff remains poorly quantified. This lack of in situ observations is particularly acute in Northwest Greenland, a remote area releasing significant runoff and where traditional river gauging is exceptionally challenging. Here, we demonstrate that georectified time-lapse camera images accurately retrieve stage fluctuations of the proglacial Minturn River, Inglefield Land, over a 3 year study period. Camera images discern the river’s wetted shoreline position, and a terrestrial LiDAR scanner (TLS) scan of riverbank microtopography enables georectification of these positions to vertical estimates of river stage. This non-contact approach captures seasonal, diurnal, and episodic runoff draining a large (∼2,800 km 2 ) lobe of grounded ice at Inglefield Land with good accuracy relative to traditional in situ bubble-gauge measurements ( r 2 = 0.81, Root Mean Square Error (RMSE) ±0.185 m for image collection at 3-h frequency; r 2 = 0.92, RMSE ±0.109 m for resampled average daily frequency). Furthermore, camera images effectively supplement other instrument data gaps during icy and/or low flow conditions, which challenge bubble-gauges and other contact-based instruments. This benefit alone extends the effective seasonal hydrological monitoring period by ∼2–4 weeks each year for the Minturn River. We conclude that low-cost, non-contact time-lapse camera methods offer good promise for monitoring proglacial meltwater runoff from the Greenland Ice Sheet and other harsh polar environments. Article in Journal/Newspaper glacier Greenland Ice Sheet Inglefield land Frontiers (Publisher) Greenland Inglefield Land ENVELOPE(-69.987,-69.987,78.637,78.637) Frontiers in Earth Science 11 |
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Open Polar |
collection |
Frontiers (Publisher) |
op_collection_id |
crfrontiers |
language |
unknown |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Goldstein, Seth N. Ryan, Jonathan C. How, Penelope R. Esenther, Sarah E. Pitcher, Lincoln H. LeWinter, Adam L. Overstreet, Brandon T. Kyzivat, Ethan D. Fayne, Jessica V. Smith, Laurence C. Proglacial river stage derived from georectified time-lapse camera images, Inglefield Land, Northwest Greenland |
topic_facet |
General Earth and Planetary Sciences |
description |
The Greenland Ice Sheet is a leading source of global sea level rise, due to surface meltwater runoff and glacier calving. However, given a scarcity of proglacial river gauge measurements, ice sheet runoff remains poorly quantified. This lack of in situ observations is particularly acute in Northwest Greenland, a remote area releasing significant runoff and where traditional river gauging is exceptionally challenging. Here, we demonstrate that georectified time-lapse camera images accurately retrieve stage fluctuations of the proglacial Minturn River, Inglefield Land, over a 3 year study period. Camera images discern the river’s wetted shoreline position, and a terrestrial LiDAR scanner (TLS) scan of riverbank microtopography enables georectification of these positions to vertical estimates of river stage. This non-contact approach captures seasonal, diurnal, and episodic runoff draining a large (∼2,800 km 2 ) lobe of grounded ice at Inglefield Land with good accuracy relative to traditional in situ bubble-gauge measurements ( r 2 = 0.81, Root Mean Square Error (RMSE) ±0.185 m for image collection at 3-h frequency; r 2 = 0.92, RMSE ±0.109 m for resampled average daily frequency). Furthermore, camera images effectively supplement other instrument data gaps during icy and/or low flow conditions, which challenge bubble-gauges and other contact-based instruments. This benefit alone extends the effective seasonal hydrological monitoring period by ∼2–4 weeks each year for the Minturn River. We conclude that low-cost, non-contact time-lapse camera methods offer good promise for monitoring proglacial meltwater runoff from the Greenland Ice Sheet and other harsh polar environments. |
author2 |
Institute at Brown for Environment and Society, Brown University |
format |
Article in Journal/Newspaper |
author |
Goldstein, Seth N. Ryan, Jonathan C. How, Penelope R. Esenther, Sarah E. Pitcher, Lincoln H. LeWinter, Adam L. Overstreet, Brandon T. Kyzivat, Ethan D. Fayne, Jessica V. Smith, Laurence C. |
author_facet |
Goldstein, Seth N. Ryan, Jonathan C. How, Penelope R. Esenther, Sarah E. Pitcher, Lincoln H. LeWinter, Adam L. Overstreet, Brandon T. Kyzivat, Ethan D. Fayne, Jessica V. Smith, Laurence C. |
author_sort |
Goldstein, Seth N. |
title |
Proglacial river stage derived from georectified time-lapse camera images, Inglefield Land, Northwest Greenland |
title_short |
Proglacial river stage derived from georectified time-lapse camera images, Inglefield Land, Northwest Greenland |
title_full |
Proglacial river stage derived from georectified time-lapse camera images, Inglefield Land, Northwest Greenland |
title_fullStr |
Proglacial river stage derived from georectified time-lapse camera images, Inglefield Land, Northwest Greenland |
title_full_unstemmed |
Proglacial river stage derived from georectified time-lapse camera images, Inglefield Land, Northwest Greenland |
title_sort |
proglacial river stage derived from georectified time-lapse camera images, inglefield land, northwest greenland |
publisher |
Frontiers Media SA |
publishDate |
2023 |
url |
http://dx.doi.org/10.3389/feart.2023.960363 https://www.frontiersin.org/articles/10.3389/feart.2023.960363/full |
long_lat |
ENVELOPE(-69.987,-69.987,78.637,78.637) |
geographic |
Greenland Inglefield Land |
geographic_facet |
Greenland Inglefield Land |
genre |
glacier Greenland Ice Sheet Inglefield land |
genre_facet |
glacier Greenland Ice Sheet Inglefield land |
op_source |
Frontiers in Earth Science volume 11 ISSN 2296-6463 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2023.960363 |
container_title |
Frontiers in Earth Science |
container_volume |
11 |
_version_ |
1790600436264206336 |