Pre-melt-season sediment plume variability at Jökulsárlón, Iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery
High-latitude atmospheric warming is impacting freshwater cycling, requiring techniques for monitoring the hydrology of sparsely-gauged regions. The submarine runoff of tidewater glaciers presents a particular challenge. We evaluate the utility of Moderate Resolution Imaging Spectroradiometer (MODIS...
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ftopenunivgb:oai:oro.open.ac.uk:46177 2023-06-11T04:03:55+02:00 Pre-melt-season sediment plume variability at Jökulsárlón, Iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery Hodgkins, Richard Bryant, Robert Darlington, Eleanor Brandon, Mark 2016-09 application/pdf https://oro.open.ac.uk/46177/ https://oro.open.ac.uk/46177/1/season%20sediment%20plume%20variability%20at%20J%C3%B6kuls%C3%A1rl%C3%B3n%20Ann%20Glac.pdf https://oro.open.ac.uk/46177/2/73A005R1%20Decision%20Letter.pdf https://oro.open.ac.uk/46177/14/pre-melt-season-sediment-plume-variability-at-jokulsarlon-iceland-a-preliminary-evaluation-using-in-situ-spectroradiometry-and-satellite-imagery.pdf https://oro.open.ac.uk/46177/20/pre-melt-season-sediment-plume-variability-at-jokulsarlon-iceland-a-preliminary-evaluation-using-in-situ-spectroradiometry-and-satellite-imagery.pdf https://doi.org/10.1017/aog.2016.20 unknown https://oro.open.ac.uk/46177/1/season%20sediment%20plume%20variability%20at%20J%C3%B6kuls%C3%A1rl%C3%B3n%20Ann%20Glac.pdf https://oro.open.ac.uk/46177/2/73A005R1%20Decision%20Letter.pdf https://oro.open.ac.uk/46177/14/pre-melt-season-sediment-plume-variability-at-jokulsarlon-iceland-a-preliminary-evaluation-using-in-situ-spectroradiometry-and-satellite-imagery.pdf https://oro.open.ac.uk/46177/20/pre-melt-season-sediment-plume-variability-at-jokulsarlon-iceland-a-preliminary-evaluation-using-in-situ-spectroradiometry-and-satellite-imagery.pdf Hodgkins, Richard; Bryant, Robert; Darlington, Eleanor and Brandon, Mark <http://oro.open.ac.uk/view/person/mab49.html> (2016). Pre-melt-season sediment plume variability at Jökulsárlón, Iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery. Annals of Glaciology, 57(73) pp. 39–46. Journal Item Public PeerReviewed 2016 ftopenunivgb https://doi.org/10.1017/aog.2016.20 2023-05-28T05:53:55Z High-latitude atmospheric warming is impacting freshwater cycling, requiring techniques for monitoring the hydrology of sparsely-gauged regions. The submarine runoff of tidewater glaciers presents a particular challenge. We evaluate the utility of Moderate Resolution Imaging Spectroradiometer (MODIS) imagery for monitoring turbid meltwater plume variability in the glacier lagoon Jökulsárlón, Iceland, for a short interval before the onset of the main melt season. Total Suspended Solids concentrations (TSS) of surface waters are related to remotely-sensed reflectance via empirical calibration between in-situ-sampled TSS and reflectance in a MODIS band 1-equivalent wavelength window. This study differs from previous ones in its application to an overturning tidewater glacier plume, rather than one derived from river runoff. The linear calibration improves on previous studies by facilitating a wider range of plume metrics than areal extent, notably pixel-by-pixel TSS values. Increasing values of minimum plume TSS over the study interval credibly represent rising overall turbidity in the lagoon as melting accumulates. Plume extent responds principally to consistently-strong offshore winds. Further work is required to determine the temporal persistence of the calibration, but remote plume observation holds promise for monitoring hydrological outputs from ungauged or ungaugeable systems. Article in Journal/Newspaper Annals of Glaciology glacier Iceland Tidewater The Open University: Open Research Online (ORO) Jökulsárlón ENVELOPE(-16.364,-16.364,64.051,64.051) Annals of Glaciology 57 73 39 46 |
institution |
Open Polar |
collection |
The Open University: Open Research Online (ORO) |
op_collection_id |
ftopenunivgb |
language |
unknown |
description |
High-latitude atmospheric warming is impacting freshwater cycling, requiring techniques for monitoring the hydrology of sparsely-gauged regions. The submarine runoff of tidewater glaciers presents a particular challenge. We evaluate the utility of Moderate Resolution Imaging Spectroradiometer (MODIS) imagery for monitoring turbid meltwater plume variability in the glacier lagoon Jökulsárlón, Iceland, for a short interval before the onset of the main melt season. Total Suspended Solids concentrations (TSS) of surface waters are related to remotely-sensed reflectance via empirical calibration between in-situ-sampled TSS and reflectance in a MODIS band 1-equivalent wavelength window. This study differs from previous ones in its application to an overturning tidewater glacier plume, rather than one derived from river runoff. The linear calibration improves on previous studies by facilitating a wider range of plume metrics than areal extent, notably pixel-by-pixel TSS values. Increasing values of minimum plume TSS over the study interval credibly represent rising overall turbidity in the lagoon as melting accumulates. Plume extent responds principally to consistently-strong offshore winds. Further work is required to determine the temporal persistence of the calibration, but remote plume observation holds promise for monitoring hydrological outputs from ungauged or ungaugeable systems. |
format |
Article in Journal/Newspaper |
author |
Hodgkins, Richard Bryant, Robert Darlington, Eleanor Brandon, Mark |
spellingShingle |
Hodgkins, Richard Bryant, Robert Darlington, Eleanor Brandon, Mark Pre-melt-season sediment plume variability at Jökulsárlón, Iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery |
author_facet |
Hodgkins, Richard Bryant, Robert Darlington, Eleanor Brandon, Mark |
author_sort |
Hodgkins, Richard |
title |
Pre-melt-season sediment plume variability at Jökulsárlón, Iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery |
title_short |
Pre-melt-season sediment plume variability at Jökulsárlón, Iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery |
title_full |
Pre-melt-season sediment plume variability at Jökulsárlón, Iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery |
title_fullStr |
Pre-melt-season sediment plume variability at Jökulsárlón, Iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery |
title_full_unstemmed |
Pre-melt-season sediment plume variability at Jökulsárlón, Iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery |
title_sort |
pre-melt-season sediment plume variability at jökulsárlón, iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery |
publishDate |
2016 |
url |
https://oro.open.ac.uk/46177/ https://oro.open.ac.uk/46177/1/season%20sediment%20plume%20variability%20at%20J%C3%B6kuls%C3%A1rl%C3%B3n%20Ann%20Glac.pdf https://oro.open.ac.uk/46177/2/73A005R1%20Decision%20Letter.pdf https://oro.open.ac.uk/46177/14/pre-melt-season-sediment-plume-variability-at-jokulsarlon-iceland-a-preliminary-evaluation-using-in-situ-spectroradiometry-and-satellite-imagery.pdf https://oro.open.ac.uk/46177/20/pre-melt-season-sediment-plume-variability-at-jokulsarlon-iceland-a-preliminary-evaluation-using-in-situ-spectroradiometry-and-satellite-imagery.pdf https://doi.org/10.1017/aog.2016.20 |
long_lat |
ENVELOPE(-16.364,-16.364,64.051,64.051) |
geographic |
Jökulsárlón |
geographic_facet |
Jökulsárlón |
genre |
Annals of Glaciology glacier Iceland Tidewater |
genre_facet |
Annals of Glaciology glacier Iceland Tidewater |
op_relation |
https://oro.open.ac.uk/46177/1/season%20sediment%20plume%20variability%20at%20J%C3%B6kuls%C3%A1rl%C3%B3n%20Ann%20Glac.pdf https://oro.open.ac.uk/46177/2/73A005R1%20Decision%20Letter.pdf https://oro.open.ac.uk/46177/14/pre-melt-season-sediment-plume-variability-at-jokulsarlon-iceland-a-preliminary-evaluation-using-in-situ-spectroradiometry-and-satellite-imagery.pdf https://oro.open.ac.uk/46177/20/pre-melt-season-sediment-plume-variability-at-jokulsarlon-iceland-a-preliminary-evaluation-using-in-situ-spectroradiometry-and-satellite-imagery.pdf Hodgkins, Richard; Bryant, Robert; Darlington, Eleanor and Brandon, Mark <http://oro.open.ac.uk/view/person/mab49.html> (2016). Pre-melt-season sediment plume variability at Jökulsárlón, Iceland, a preliminary evaluation using in-situ spectroradiometry and satellite imagery. Annals of Glaciology, 57(73) pp. 39–46. |
op_doi |
https://doi.org/10.1017/aog.2016.20 |
container_title |
Annals of Glaciology |
container_volume |
57 |
container_issue |
73 |
container_start_page |
39 |
op_container_end_page |
46 |
_version_ |
1768384459240898560 |