Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification
Figure 4. Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification. Letters denote differences among classes at a statistical significance at P ≤ 0.05. Abstract C...
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ftdatacite:10.6084/m9.figshare.1011733.v1 2023-05-15T16:37:20+02:00 Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification E F Belshe E A G Schuur G Grosse 2013 https://dx.doi.org/10.6084/m9.figshare.1011733.v1 https://iop.figshare.com/articles/figure/_Maximum_seasonal_thaw_depth_cm_of_land_cover_classes_with_solid_line_denoting_mean_and_box_denoted_/1011733/1 unknown IOP Publishing https://dx.doi.org/10.6084/m9.figshare.1011733 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Environmental Science Image Figure graphic ImageObject 2013 ftdatacite https://doi.org/10.6084/m9.figshare.1011733.v1 https://doi.org/10.6084/m9.figshare.1011733 2021-11-05T12:55:41Z Figure 4. Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification. Letters denote differences among classes at a statistical significance at P ≤ 0.05. Abstract Climate-induced changes to permafrost are altering high latitude landscapes in ways that could increase the vulnerability of the vast soil carbon pools of the region. Permafrost thaw is temporally dynamic and spatially heterogeneous because, in addition to the thickening of the active layer, localized thermokarst features form when ice-rich permafrost thaws and the ground subsides. Thermokarst produces a diversity of landforms and alters the physical environment in dynamic ways. To estimate potential changes to the carbon cycle it is imperative to quantify the size and distribution of thermokarst landforms. By performing a supervised classification on a high resolution IKONOS image, we detected and mapped small, irregular thermokarst features occurring within an upland watershed in discontinuous permafrost of Interior Alaska. We found that 12% of the Eight Mile Lake (EML) watershed has undergone thermokarst, predominantly in valleys where tussock tundra resides. About 35% of the 3.7 km 2 tussock tundra class has likely transitioned to thermokarst. These landscape level changes created by permafrost thaw at EML have important implications for ecosystem carbon cycling because thermokarst features are forming in carbon-rich areas and are altering the hydrology in ways that increase seasonal thawing of the soil. Still Image Ice permafrost Thermokarst Tundra Alaska DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science |
spellingShingle |
Environmental Science E F Belshe E A G Schuur G Grosse Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification |
topic_facet |
Environmental Science |
description |
Figure 4. Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification. Letters denote differences among classes at a statistical significance at P ≤ 0.05. Abstract Climate-induced changes to permafrost are altering high latitude landscapes in ways that could increase the vulnerability of the vast soil carbon pools of the region. Permafrost thaw is temporally dynamic and spatially heterogeneous because, in addition to the thickening of the active layer, localized thermokarst features form when ice-rich permafrost thaws and the ground subsides. Thermokarst produces a diversity of landforms and alters the physical environment in dynamic ways. To estimate potential changes to the carbon cycle it is imperative to quantify the size and distribution of thermokarst landforms. By performing a supervised classification on a high resolution IKONOS image, we detected and mapped small, irregular thermokarst features occurring within an upland watershed in discontinuous permafrost of Interior Alaska. We found that 12% of the Eight Mile Lake (EML) watershed has undergone thermokarst, predominantly in valleys where tussock tundra resides. About 35% of the 3.7 km 2 tussock tundra class has likely transitioned to thermokarst. These landscape level changes created by permafrost thaw at EML have important implications for ecosystem carbon cycling because thermokarst features are forming in carbon-rich areas and are altering the hydrology in ways that increase seasonal thawing of the soil. |
format |
Still Image |
author |
E F Belshe E A G Schuur G Grosse |
author_facet |
E F Belshe E A G Schuur G Grosse |
author_sort |
E F Belshe |
title |
Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification |
title_short |
Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification |
title_full |
Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification |
title_fullStr |
Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification |
title_full_unstemmed |
Maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification |
title_sort |
maximum seasonal thaw depth (cm) of land cover classes, with solid line denoting mean and box denoted the 25th and 75th quartile, and colors corresponding to the mapped supervised classification |
publisher |
IOP Publishing |
publishDate |
2013 |
url |
https://dx.doi.org/10.6084/m9.figshare.1011733.v1 https://iop.figshare.com/articles/figure/_Maximum_seasonal_thaw_depth_cm_of_land_cover_classes_with_solid_line_denoting_mean_and_box_denoted_/1011733/1 |
genre |
Ice permafrost Thermokarst Tundra Alaska |
genre_facet |
Ice permafrost Thermokarst Tundra Alaska |
op_relation |
https://dx.doi.org/10.6084/m9.figshare.1011733 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.1011733.v1 https://doi.org/10.6084/m9.figshare.1011733 |
_version_ |
1766027628359188480 |