Data_Sheet_1_Identifying Spatial Variability in Greenland's Outlet Glacier Response to Ocean Heat.pdf
Although the Greenland ice sheet is losing mass as a whole, patterns of change on both local and regional scales are complex. Spatial statistics reveal large spatial variability of dynamic thinning rates of Greenland's marine-terminating glaciers between 2003 and 2009; only 18% of glacier thinn...
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ftfrontimediafig:oai:figshare.com:article/6814169 2023-05-15T15:13:04+02:00 Data_Sheet_1_Identifying Spatial Variability in Greenland's Outlet Glacier Response to Ocean Heat.pdf David F. Porter Kirsty J. Tinto Alexandra L. Boghosian Beata M. Csatho Robin E. Bell James R. Cochran 2018-07-13T04:13:44Z https://doi.org/10.3389/feart.2018.00090.s001 https://figshare.com/articles/Data_Sheet_1_Identifying_Spatial_Variability_in_Greenland_s_Outlet_Glacier_Response_to_Ocean_Heat_pdf/6814169 unknown doi:10.3389/feart.2018.00090.s001 https://figshare.com/articles/Data_Sheet_1_Identifying_Spatial_Variability_in_Greenland_s_Outlet_Glacier_Response_to_Ocean_Heat_pdf/6814169 CC BY 4.0 CC-BY Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change ice thickness measurements ice-ocean interactions ice-sheet mass balance glacier geophysics Arctic glaciology spatial statistics Dataset 2018 ftfrontimediafig https://doi.org/10.3389/feart.2018.00090.s001 2018-07-18T22:57:57Z Although the Greenland ice sheet is losing mass as a whole, patterns of change on both local and regional scales are complex. Spatial statistics reveal large spatial variability of dynamic thinning rates of Greenland's marine-terminating glaciers between 2003 and 2009; only 18% of glacier thinning rates co-vary with neighboring glaciers. Most spatially-correlated thinning rates are clusters of stable glaciers in the Thule, Scoresby Sund, and Southwest regions. Conversely, where spatial-autocorrelation is low, individual glaciers are more strongly controlled by local, glacier-scale features than by regional influences. We investigate possible sources of local control of oceanic forcing by combining grounding line depths and ocean model output to estimate mean ocean heat content adjacent to 74 glaciers. Linear regression models indicate stronger correlation of dynamic thinning rates with ocean heat content compared to those with grounding line depths alone. The correlation between ocean heat and dynamic thinning is robust for all of Greenland except glaciers in the West, and strongest in the Southeast (R 2 ~ 0.81 ± 0.15, p = 0.009), implying that glaciers with deeper grounded termini here are most sensitive to changes in ocean forcing. In the Northwest, accounting for shallow sills in the regressions improves the correlation of water depth with glacial thinning, highlighting the need for comprehensive knowledge of fjord geometry. Dataset Arctic Climate change glacier Greenland Ice Sheet Scoresby Sund Thule Frontiers: Figshare Arctic Greenland Scoresby ENVELOPE(162.750,162.750,-66.567,-66.567) Scoresby Sund ENVELOPE(-24.387,-24.387,70.476,70.476) Sund ENVELOPE(13.644,13.644,66.207,66.207) |
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Open Polar |
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Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change ice thickness measurements ice-ocean interactions ice-sheet mass balance glacier geophysics Arctic glaciology spatial statistics |
spellingShingle |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change ice thickness measurements ice-ocean interactions ice-sheet mass balance glacier geophysics Arctic glaciology spatial statistics David F. Porter Kirsty J. Tinto Alexandra L. Boghosian Beata M. Csatho Robin E. Bell James R. Cochran Data_Sheet_1_Identifying Spatial Variability in Greenland's Outlet Glacier Response to Ocean Heat.pdf |
topic_facet |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change ice thickness measurements ice-ocean interactions ice-sheet mass balance glacier geophysics Arctic glaciology spatial statistics |
description |
Although the Greenland ice sheet is losing mass as a whole, patterns of change on both local and regional scales are complex. Spatial statistics reveal large spatial variability of dynamic thinning rates of Greenland's marine-terminating glaciers between 2003 and 2009; only 18% of glacier thinning rates co-vary with neighboring glaciers. Most spatially-correlated thinning rates are clusters of stable glaciers in the Thule, Scoresby Sund, and Southwest regions. Conversely, where spatial-autocorrelation is low, individual glaciers are more strongly controlled by local, glacier-scale features than by regional influences. We investigate possible sources of local control of oceanic forcing by combining grounding line depths and ocean model output to estimate mean ocean heat content adjacent to 74 glaciers. Linear regression models indicate stronger correlation of dynamic thinning rates with ocean heat content compared to those with grounding line depths alone. The correlation between ocean heat and dynamic thinning is robust for all of Greenland except glaciers in the West, and strongest in the Southeast (R 2 ~ 0.81 ± 0.15, p = 0.009), implying that glaciers with deeper grounded termini here are most sensitive to changes in ocean forcing. In the Northwest, accounting for shallow sills in the regressions improves the correlation of water depth with glacial thinning, highlighting the need for comprehensive knowledge of fjord geometry. |
format |
Dataset |
author |
David F. Porter Kirsty J. Tinto Alexandra L. Boghosian Beata M. Csatho Robin E. Bell James R. Cochran |
author_facet |
David F. Porter Kirsty J. Tinto Alexandra L. Boghosian Beata M. Csatho Robin E. Bell James R. Cochran |
author_sort |
David F. Porter |
title |
Data_Sheet_1_Identifying Spatial Variability in Greenland's Outlet Glacier Response to Ocean Heat.pdf |
title_short |
Data_Sheet_1_Identifying Spatial Variability in Greenland's Outlet Glacier Response to Ocean Heat.pdf |
title_full |
Data_Sheet_1_Identifying Spatial Variability in Greenland's Outlet Glacier Response to Ocean Heat.pdf |
title_fullStr |
Data_Sheet_1_Identifying Spatial Variability in Greenland's Outlet Glacier Response to Ocean Heat.pdf |
title_full_unstemmed |
Data_Sheet_1_Identifying Spatial Variability in Greenland's Outlet Glacier Response to Ocean Heat.pdf |
title_sort |
data_sheet_1_identifying spatial variability in greenland's outlet glacier response to ocean heat.pdf |
publishDate |
2018 |
url |
https://doi.org/10.3389/feart.2018.00090.s001 https://figshare.com/articles/Data_Sheet_1_Identifying_Spatial_Variability_in_Greenland_s_Outlet_Glacier_Response_to_Ocean_Heat_pdf/6814169 |
long_lat |
ENVELOPE(162.750,162.750,-66.567,-66.567) ENVELOPE(-24.387,-24.387,70.476,70.476) ENVELOPE(13.644,13.644,66.207,66.207) |
geographic |
Arctic Greenland Scoresby Scoresby Sund Sund |
geographic_facet |
Arctic Greenland Scoresby Scoresby Sund Sund |
genre |
Arctic Climate change glacier Greenland Ice Sheet Scoresby Sund Thule |
genre_facet |
Arctic Climate change glacier Greenland Ice Sheet Scoresby Sund Thule |
op_relation |
doi:10.3389/feart.2018.00090.s001 https://figshare.com/articles/Data_Sheet_1_Identifying_Spatial_Variability_in_Greenland_s_Outlet_Glacier_Response_to_Ocean_Heat_pdf/6814169 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/feart.2018.00090.s001 |
_version_ |
1766343662578434048 |