Topographic controls on ice flow and recession for Juneau Icefield (Alaska/British Columbia). / Davies, Bethan; Bendle , James; Carrivick, Jonathan L.; McNabb, Robert; McNeil, Christopher; Pelto, Mauri; Campbell, Seth; Holt, Tom O.; Ely, Jeremy; Markle, Bradley.

In: Earth Surface Processes and Landforms, 07.04.2022.

Research output: Contribution to journalArticlepeer-review

Forthcoming

Standard

Topographic controls on ice flow and recession for Juneau Icefield (Alaska/British Columbia). / Davies, Bethan; Bendle , James; Carrivick, Jonathan L.; McNabb, Robert; McNeil, Christopher; Pelto, Mauri; Campbell, Seth; Holt, Tom O.; Ely, Jeremy; Markle, Bradley.

In: Earth Surface Processes and Landforms, 07.04.2022.

Research output: Contribution to journalArticlepeer-review

Harvard

Davies, B, Bendle , J, Carrivick, JL, McNabb, R, McNeil, C, Pelto, M, Campbell, S, Holt, TO, Ely, J & Markle, B 2022, 'Topographic controls on ice flow and recession for Juneau Icefield (Alaska/British Columbia)', Earth Surface Processes and Landforms. https://doi.org/10.1002/esp.5383

APA

Davies, B., Bendle , J., Carrivick, J. L., McNabb, R., McNeil, C., Pelto, M., Campbell, S., Holt, T. O., Ely, J., & Markle, B. (Accepted/In press). Topographic controls on ice flow and recession for Juneau Icefield (Alaska/British Columbia). Earth Surface Processes and Landforms. https://doi.org/10.1002/esp.5383

Vancouver

Davies B, Bendle J, Carrivick JL, McNabb R, McNeil C, Pelto M et al. Topographic controls on ice flow and recession for Juneau Icefield (Alaska/British Columbia). Earth Surface Processes and Landforms. 2022 Apr 7. https://doi.org/10.1002/esp.5383

Author

Davies, Bethan ; Bendle , James ; Carrivick, Jonathan L. ; McNabb, Robert ; McNeil, Christopher ; Pelto, Mauri ; Campbell, Seth ; Holt, Tom O. ; Ely, Jeremy ; Markle, Bradley. / Topographic controls on ice flow and recession for Juneau Icefield (Alaska/British Columbia). In: Earth Surface Processes and Landforms. 2022.

BibTeX

@article{e8c9139e6f2143d8a5db908e99d24231,
title = "Topographic controls on ice flow and recession for Juneau Icefield (Alaska/British Columbia)",
abstract = "Globally, mountain glaciers and ice caps are losing dramatic volumes of ice. The resultant sea-level rise is dominated by contributions from Alaska. Plateau icefields may be especially sensitive to climate change due to the non-linear controls their topography imparts on their response to climate change. However, Alaskan plateau icefields have been subject to little structural glaciological or regional geomorphological assessment, which makes the controls on their present and former mass balance difficult to ascertain. We inventoried 1050 glaciers and 401 lakes of the Juneau Icefield region for the year 2019. We found that 63 glaciers had disappeared since the 2005 inventory, with a reduction of glacier area of 422 km2 (10.0%). We also present the first structural glaciological and geomorphological map for an entire icefield in Alaska. Glaciological mapping of >20,000 features included crevasses, debris cover, foliation, ogives, medial moraines and, importantly, areas of glacier fragmentation, where glaciers either separated from tributaries via lateral recession (n=59), or disconnected within areas of former icefalls (n=281). Geomorphological mapping of >10,400 landforms included glacial moraines, glacial lakes, trimlines, flutes and cirques. These landforms were generated by a temperate icefield during the “Little Ice Age” neoglaciation. These data demonstrate that the present-day outlet glaciers, which have a similar thermal and ice-flow regime, have undergone largely continuous recession since the “Little Ice Age”. Importantly, disconnections occurring within glaciers can separate accumulation and ablation zones, increasing rates of glacier mass loss. We show that glacier disconnections are widespread across the icefield and should be critically taken into consideration when icefield vulnerability to climate change is considered.",
author = "Bethan Davies and James Bendle and Carrivick, {Jonathan L.} and Robert McNabb and Christopher McNeil and Mauri Pelto and Seth Campbell and Holt, {Tom O.} and Jeremy Ely and Bradley Markle",
year = "2022",
month = apr,
day = "7",
doi = "10.1002/esp.5383",
language = "English",
journal = "Earth Surface Processes and Landforms",
issn = "0197-9337",
publisher = "John Wiley and Sons Ltd",

}

RIS

TY - JOUR

T1 - Topographic controls on ice flow and recession for Juneau Icefield (Alaska/British Columbia)

AU - Davies, Bethan

AU - Bendle , James

AU - Carrivick, Jonathan L.

AU - McNabb, Robert

AU - McNeil, Christopher

AU - Pelto, Mauri

AU - Campbell, Seth

AU - Holt, Tom O.

AU - Ely, Jeremy

AU - Markle, Bradley

PY - 2022/4/7

Y1 - 2022/4/7

N2 - Globally, mountain glaciers and ice caps are losing dramatic volumes of ice. The resultant sea-level rise is dominated by contributions from Alaska. Plateau icefields may be especially sensitive to climate change due to the non-linear controls their topography imparts on their response to climate change. However, Alaskan plateau icefields have been subject to little structural glaciological or regional geomorphological assessment, which makes the controls on their present and former mass balance difficult to ascertain. We inventoried 1050 glaciers and 401 lakes of the Juneau Icefield region for the year 2019. We found that 63 glaciers had disappeared since the 2005 inventory, with a reduction of glacier area of 422 km2 (10.0%). We also present the first structural glaciological and geomorphological map for an entire icefield in Alaska. Glaciological mapping of >20,000 features included crevasses, debris cover, foliation, ogives, medial moraines and, importantly, areas of glacier fragmentation, where glaciers either separated from tributaries via lateral recession (n=59), or disconnected within areas of former icefalls (n=281). Geomorphological mapping of >10,400 landforms included glacial moraines, glacial lakes, trimlines, flutes and cirques. These landforms were generated by a temperate icefield during the “Little Ice Age” neoglaciation. These data demonstrate that the present-day outlet glaciers, which have a similar thermal and ice-flow regime, have undergone largely continuous recession since the “Little Ice Age”. Importantly, disconnections occurring within glaciers can separate accumulation and ablation zones, increasing rates of glacier mass loss. We show that glacier disconnections are widespread across the icefield and should be critically taken into consideration when icefield vulnerability to climate change is considered.

AB - Globally, mountain glaciers and ice caps are losing dramatic volumes of ice. The resultant sea-level rise is dominated by contributions from Alaska. Plateau icefields may be especially sensitive to climate change due to the non-linear controls their topography imparts on their response to climate change. However, Alaskan plateau icefields have been subject to little structural glaciological or regional geomorphological assessment, which makes the controls on their present and former mass balance difficult to ascertain. We inventoried 1050 glaciers and 401 lakes of the Juneau Icefield region for the year 2019. We found that 63 glaciers had disappeared since the 2005 inventory, with a reduction of glacier area of 422 km2 (10.0%). We also present the first structural glaciological and geomorphological map for an entire icefield in Alaska. Glaciological mapping of >20,000 features included crevasses, debris cover, foliation, ogives, medial moraines and, importantly, areas of glacier fragmentation, where glaciers either separated from tributaries via lateral recession (n=59), or disconnected within areas of former icefalls (n=281). Geomorphological mapping of >10,400 landforms included glacial moraines, glacial lakes, trimlines, flutes and cirques. These landforms were generated by a temperate icefield during the “Little Ice Age” neoglaciation. These data demonstrate that the present-day outlet glaciers, which have a similar thermal and ice-flow regime, have undergone largely continuous recession since the “Little Ice Age”. Importantly, disconnections occurring within glaciers can separate accumulation and ablation zones, increasing rates of glacier mass loss. We show that glacier disconnections are widespread across the icefield and should be critically taken into consideration when icefield vulnerability to climate change is considered.

U2 - 10.1002/esp.5383

DO - 10.1002/esp.5383

M3 - Article

JO - Earth Surface Processes and Landforms

JF - Earth Surface Processes and Landforms

SN - 0197-9337

ER -