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Record #202085:

Force budget analysis of glacier flow: ice dynamical studies on Storglaciären, Sweden, and ice flow investigations of outlet glaciers in Dronning Maud Land, Antarctica / Jim Hedfors.

Title: Force budget analysis of glacier flow: ice dynamical studies on Storglaciären, Sweden, and ice flow investigations of outlet glaciers in Dronning Maud Land, Antarctica / Jim Hedfors.
Author(s): Hedfors, Jim.
Date: 2004.
Publisher: Uppsala: Acta Universitatis Upsaliensis
Abstract: Describes collection, processing, and analysis of geophysical and remotely-sensed data of glacier movement and geometry, and use of an improved modelling technique to establish spatial and temporal patterns of ice dynamics to estimate ice mass fluxes in polar regions. Geophysical data was collected from four glacial systems: Storglaciären in Sweden, and Bonnevie-Svendsenbreen, Kibergbreen and Plogbreen in Antarctica, using combinations of in situ DGPS and GPR techniques together with remotely-sensed data from mainly SPOT panchromatic and RADARSAT SAR imagery. A methodology of combining force balance calculations with calculations of thermodynamic properties of ice was incorporated in a model to calculate ice flow via inversion of flow law for ice. Method estimates outflux component through glacier cross-section, and evaluates variations in outflux with temporal changes and in relation to influx in terms of mass balance to provide signals for climate change. Requires ice surface velocities and ice geometry together with climate parameters such as temperature and snow accumulation rates. Methodology is tested on sub-Arctic control glacier prior to case studies in Antarctica.
Notes:

With: Investigating the ratio of basal drag and driving stress in relation to bedrock topography during a melt season on Storglaciáren, Sweden, using force budget analysis / Hedfors, J., V. Peyaud, V.A. Pohjola, P. Jansson and R. Petersson, 2003. Annals of Glaciology 37 :263-268 -- Studying the effects of strain heating on glacial flow within outlet glaciers from the Heimefrontfjella Range, D.M.L., Antarctica / Pohjola, V.A. and J. Hefors, 2003. Annals of Glaciology 37 :134-142 -- Investigating the potential to determine the upstream accumulation rate, using mass flux calculations along a cross-section on a small tributary glacier in Heimefrontfjella, D.M.L., Antarctica. Pohjola, V.A., J. Hedfors and P. Holmlund. Annals of Glaciology 39. In press -- Ice flux of Plogbreen, a small ice stream in Dronning Maud Land, Antarctica. Hedfors, J., V.A. Pohjola. Annals of Glaciology 39. In press.

Keywords: 551.32 -- Glaciology.
551.324 -- Land ice.
551.324.22 -- Glaciers: Storglaciären.
551.324.22 -- Glaciers: Bonnevie-Svendsenbreen.
551.324.22 -- Glaciers: Kibergbreen.
551.324.24 -- Ice sheets and caps: Plogbreen.
550.3 -- Geophysics.
551.324.4 -- Land ice, mass and energy balance.
551.324.5 -- Land ice, flow.
551.5 -- Meteorology.
53.087.23 -- Remote sensing.
043 -- Theses.
E5 -- Glaciology: land ice.
(*57) -- Sweden.
(*7) -- Antarctic regions.
(*73) -- Dronning Maud Land.
Location(s): SCO: SPRI-SHF: 551.324.5
ISBN: 9155459366
SPRI record no.: 202085

MARCXML

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035 ## ‡aSPRI-202085
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100 1# ‡aHedfors, Jim.
245 10 ‡aForce budget analysis of glacier flow :‡bice dynamical studies on Storglaciären, Sweden, and ice flow investigations of outlet glaciers in Dronning Maud Land, Antarctica /‡cJim Hedfors.
260 ## ‡aUppsala :‡bActa Universitatis Upsaliensis,‡c2004.
300 ## ‡ap. 1-70 :‡bill., diags., tables, maps ;‡c25 cm.
490 0# ‡aComprehensive summaries of Uppsala Dissertations from the Faculty of Science and Technology ;‡v963
500 ## ‡aWith: Investigating the ratio of basal drag and driving stress in relation to bedrock topography during a melt season on Storglaciáren, Sweden, using force budget analysis / Hedfors, J., V. Peyaud, V.A. Pohjola, P. Jansson and R. Petersson, 2003. Annals of Glaciology 37 :263-268 -- Studying the effects of strain heating on glacial flow within outlet glaciers from the Heimefrontfjella Range, D.M.L., Antarctica / Pohjola, V.A. and J. Hefors, 2003. Annals of Glaciology 37 :134-142 -- Investigating the potential to determine the upstream accumulation rate, using mass flux calculations along a cross-section on a small tributary glacier in Heimefrontfjella, D.M.L., Antarctica. Pohjola, V.A., J. Hedfors and P. Holmlund. Annals of Glaciology 39. In press -- Ice flux of Plogbreen, a small ice stream in Dronning Maud Land, Antarctica. Hedfors, J., V.A. Pohjola. Annals of Glaciology 39. In press.
520 3# ‡aDescribes collection, processing, and analysis of geophysical and remotely-sensed data of glacier movement and geometry, and use of an improved modelling technique to establish spatial and temporal patterns of ice dynamics to estimate ice mass fluxes in polar regions. Geophysical data was collected from four glacial systems: Storglaciären in Sweden, and Bonnevie-Svendsenbreen, Kibergbreen and Plogbreen in Antarctica, using combinations of in situ DGPS and GPR techniques together with remotely-sensed data from mainly SPOT panchromatic and RADARSAT SAR imagery. A methodology of combining force balance calculations with calculations of thermodynamic properties of ice was incorporated in a model to calculate ice flow via inversion of flow law for ice. Method estimates outflux component through glacier cross-section, and evaluates variations in outflux with temporal changes and in relation to influx in terms of mass balance to provide signals for climate change. Requires ice surface velocities and ice geometry together with climate parameters such as temperature and snow accumulation rates. Methodology is tested on sub-Arctic control glacier prior to case studies in Antarctica.
650 07 ‡a551.32 -- Glaciology.‡2udc
650 07 ‡a551.324 -- Land ice.‡2udc
650 07 ‡a551.324.22 -- Glaciers: Storglaciären.‡2udc
650 07 ‡a551.324.22 -- Glaciers: Bonnevie-Svendsenbreen.‡2udc
650 07 ‡a551.324.22 -- Glaciers: Kibergbreen.‡2udc
650 07 ‡a551.324.24 -- Ice sheets and caps: Plogbreen.‡2udc
650 07 ‡a550.3 -- Geophysics.‡2udc
650 07 ‡a551.324.4 -- Land ice, mass and energy balance.‡2udc
650 07 ‡a551.324.5 -- Land ice, flow.‡2udc
650 07 ‡a551.5 -- Meteorology.‡2udc
650 07 ‡a53.087.23 -- Remote sensing.‡2udc
650 07 ‡a043 -- Theses.‡2udc
650 07 ‡aE5 -- Glaciology: land ice.‡2local
651 #7 ‡a(*57) -- Sweden.‡2udc
651 #7 ‡a(*7) -- Antarctic regions.‡2udc
651 #7 ‡a(*73) -- Dronning Maud Land.‡2udc
852 7# ‡2camdept‡bSCO‡cSPRI-SHF‡h551.324.5‡9Create 1 item record‡0Migrate
916 ## ‡a147289 -- 2013/01/16 -- JR
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20221003 ‡bJR