Seasonal velocities of eight major marine-terminating outlet glaciers of the Greenland ice sheet from continuous in situ GPS instruments

A. P. Ahlstrøm; S. B. Andersen; M. L. Andersen; H. Machguth; F. M. Nick; I. Joughin; C. H. Reijmer; R. S. W. Van De Wal; J. P. Merryman Boncori; J. E. Box; M. Citterio; D. Van As; R. S. Fausto; A. Hubbard

doi:10.5194/essdd-6-27-2013

Seasonal velocities of eight major marine-terminating outlet glaciers of the Greenland ice sheet from continuous in situ GPS instruments

A. P. Ahlstrøm, S. B. Andersen, M. L. Andersen, H. Machguth, F. M. Nick, I. Joughin, C. H. Reijmer, R. S. W. Van De Wal, J. P. Merryman Boncori, J. E. Box, M. Citterio, D. Van As, R. S. Fausto, A. Hubbard

Adran Daearyddiaeth a Gwyddorau Daear

Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

36 Dyfyniadau (Scopus)

Crynodeb

We present 17 velocity records derived from in situ stand-alone single-frequency Global Positioning System (GPS) receivers placed on eight marine-terminating ice sheet outlet glaciers in South, West and North Greenland, covering varying parts of the period summer 2009 to summer 2012. Common to all the observed glacier velocity records is a pronounced seasonal variation, with an early melt season maximum. The GPS-derived velocities are compared to velocities derived from radar satellite imagery over six of the glaciers to illustrate the potential of the GPS data for validation purposes. Three different velocity map products are evaluated, based on ALOS/PALSAR data, TerraSAR-X/Tandem-X data and an aggregate winter TerraSAR-X data set. The velocity maps derived from TerraSAR-X/Tandem-X data have a mean difference of 1.5% compared to the mean GPS velocity over the corresponding period, while velocity maps derived from ALOS/PALSAR data have a mean difference of 8.3%. The velocity maps derived from the aggregate winter TerraSAR-X data set have a mean difference of 9.5% to the corresponding GPS velocities. The data are available from the GEUS repository at doi:10.5280/GEUS000001.

Iaith wreiddiol	Saesneg
Tudalennau (o-i)	27-57
Cyfnodolyn	Earth System Science Data Discussions
Cyfrol	6
Rhif cyhoeddi	1
Dynodwyr Gwrthrych Digidol (DOIs)	https://doi.org/10.5194/essdd-6-27-2013
Statws	Cyhoeddwyd - 23 Ion 2013

NDC y CU

Mae’r allbwn hwn yn cyfrannu at y Nod(au) Datblygu Cynaliadwy canlynol

Mynediad at Ddogfen

10.5194/essdd-6-27-2013

http://www.earth-syst-sci-data-discuss.net/6/27/2013/

Cysylltiad parhaol

Dolen barhaus

Ffeiliau eraill a chysylltiadau

http://hdl.handle.net/2160/36246

3 Wedi Gorffen

Investigating Meltwater Flow Beneath the Greenland Ice Sheet using a Multi-tracer Approach
Hubbard, A. (Prif Ymchwilydd)
Natural Environment Research Council
01 Mai 2011 → 30 Ebr 2015
Prosiect: Ymchwil a ariannwyd yn allanol
A Holistic Model of Outlet Calving, Dynamic Acceloration and Drawdown for the Greenland Ice Sheet
Hubbard, A. (Prif Ymchwilydd)
Natural Environment Research Council
01 Meh 2009 → 31 Mai 2011
Prosiect: Ymchwil a ariannwyd yn allanol
Dynamic Response of the Greenland Ice Sheet to Climate Forcing using a geophysical, Remote sensing and Numerical Modelling Framework
Hubbard, A. (Prif Ymchwilydd)
Natural Environment Research Council
01 Maw 2009 → 31 Ion 2013
Prosiect: Ymchwil a ariannwyd yn allanol

Dyfynnu hyn

Ahlstrøm, A. P., Andersen, S. B., Andersen, M. L., Machguth, H., Nick, F. M., Joughin, I., Reijmer, C. H., Van De Wal, R. S. W., Merryman Boncori, J. P., Box, J. E., Citterio, M., Van As, D., Fausto, R. S., & Hubbard, A. (2013). Seasonal velocities of eight major marine-terminating outlet glaciers of the Greenland ice sheet from continuous in situ GPS instruments. Earth System Science Data Discussions, 6(1), 27-57. https://doi.org/10.5194/essdd-6-27-2013

@article{b25f816913b54345a586f9b28dd3331b,

title = "Seasonal velocities of eight major marine-terminating outlet glaciers of the Greenland ice sheet from continuous in situ GPS instruments",

abstract = "We present 17 velocity records derived from in situ stand-alone single-frequency Global Positioning System (GPS) receivers placed on eight marine-terminating ice sheet outlet glaciers in South, West and North Greenland, covering varying parts of the period summer 2009 to summer 2012. Common to all the observed glacier velocity records is a pronounced seasonal variation, with an early melt season maximum. The GPS-derived velocities are compared to velocities derived from radar satellite imagery over six of the glaciers to illustrate the potential of the GPS data for validation purposes. Three different velocity map products are evaluated, based on ALOS/PALSAR data, TerraSAR-X/Tandem-X data and an aggregate winter TerraSAR-X data set. The velocity maps derived from TerraSAR-X/Tandem-X data have a mean difference of 1.5% compared to the mean GPS velocity over the corresponding period, while velocity maps derived from ALOS/PALSAR data have a mean difference of 8.3%. The velocity maps derived from the aggregate winter TerraSAR-X data set have a mean difference of 9.5% to the corresponding GPS velocities. The data are available from the GEUS repository at doi:10.5280/GEUS000001.",

author = "Ahlstr{\o}m, {A. P.} and Andersen, {S. B.} and Andersen, {M. L.} and H. Machguth and Nick, {F. M.} and I. Joughin and Reijmer, {C. H.} and {Van De Wal}, {R. S. W.} and {Merryman Boncori}, {J. P.} and Box, {J. E.} and M. Citterio and {Van As}, D. and Fausto, {R. S.} and A. Hubbard",

note = "Funder: NERC RONO: NE/G005796/1 ",

year = "2013",

month = jan,

day = "23",

doi = "10.5194/essdd-6-27-2013",

language = "English",

volume = "6",

pages = "27--57",

journal = "Earth System Science Data Discussions",

issn = "1866-3591",

publisher = "Copernicus Publications",

number = "1",

}

Ahlstrøm, AP, Andersen, SB, Andersen, ML, Machguth, H, Nick, FM, Joughin, I, Reijmer, CH, Van De Wal, RSW, Merryman Boncori, JP, Box, JE, Citterio, M, Van As, D, Fausto, RS & Hubbard, A 2013, 'Seasonal velocities of eight major marine-terminating outlet glaciers of the Greenland ice sheet from continuous in situ GPS instruments', Earth System Science Data Discussions, cyfrol. 6, rhif 1, tt. 27-57. https://doi.org/10.5194/essdd-6-27-2013

TY - JOUR

T1 - Seasonal velocities of eight major marine-terminating outlet glaciers of the Greenland ice sheet from continuous in situ GPS instruments

AU - Ahlstrøm, A. P.

AU - Andersen, S. B.

AU - Andersen, M. L.

AU - Machguth, H.

AU - Nick, F. M.

AU - Joughin, I.

AU - Reijmer, C. H.

AU - Van De Wal, R. S. W.

AU - Merryman Boncori, J. P.

AU - Box, J. E.

AU - Citterio, M.

AU - Van As, D.

AU - Fausto, R. S.

AU - Hubbard, A.

N1 - Funder: NERC RONO: NE/G005796/1

PY - 2013/1/23

Y1 - 2013/1/23

N2 - We present 17 velocity records derived from in situ stand-alone single-frequency Global Positioning System (GPS) receivers placed on eight marine-terminating ice sheet outlet glaciers in South, West and North Greenland, covering varying parts of the period summer 2009 to summer 2012. Common to all the observed glacier velocity records is a pronounced seasonal variation, with an early melt season maximum. The GPS-derived velocities are compared to velocities derived from radar satellite imagery over six of the glaciers to illustrate the potential of the GPS data for validation purposes. Three different velocity map products are evaluated, based on ALOS/PALSAR data, TerraSAR-X/Tandem-X data and an aggregate winter TerraSAR-X data set. The velocity maps derived from TerraSAR-X/Tandem-X data have a mean difference of 1.5% compared to the mean GPS velocity over the corresponding period, while velocity maps derived from ALOS/PALSAR data have a mean difference of 8.3%. The velocity maps derived from the aggregate winter TerraSAR-X data set have a mean difference of 9.5% to the corresponding GPS velocities. The data are available from the GEUS repository at doi:10.5280/GEUS000001.

AB - We present 17 velocity records derived from in situ stand-alone single-frequency Global Positioning System (GPS) receivers placed on eight marine-terminating ice sheet outlet glaciers in South, West and North Greenland, covering varying parts of the period summer 2009 to summer 2012. Common to all the observed glacier velocity records is a pronounced seasonal variation, with an early melt season maximum. The GPS-derived velocities are compared to velocities derived from radar satellite imagery over six of the glaciers to illustrate the potential of the GPS data for validation purposes. Three different velocity map products are evaluated, based on ALOS/PALSAR data, TerraSAR-X/Tandem-X data and an aggregate winter TerraSAR-X data set. The velocity maps derived from TerraSAR-X/Tandem-X data have a mean difference of 1.5% compared to the mean GPS velocity over the corresponding period, while velocity maps derived from ALOS/PALSAR data have a mean difference of 8.3%. The velocity maps derived from the aggregate winter TerraSAR-X data set have a mean difference of 9.5% to the corresponding GPS velocities. The data are available from the GEUS repository at doi:10.5280/GEUS000001.

UR - http://hdl.handle.net/2160/36246

U2 - 10.5194/essdd-6-27-2013

DO - 10.5194/essdd-6-27-2013

M3 - Article

SN - 1866-3591

VL - 6

SP - 27

EP - 57

JO - Earth System Science Data Discussions

JF - Earth System Science Data Discussions

IS - 1

ER -

Seasonal velocities of eight major marine-terminating outlet glaciers of the Greenland ice sheet from continuous in situ GPS instruments

Crynodeb

NDC y CU

Mynediad at Ddogfen

Cysylltiad parhaol

Ffeiliau eraill a chysylltiadau

Ôl bys

Prosiectau

Investigating Meltwater Flow Beneath the Greenland Ice Sheet using a Multi-tracer Approach

A Holistic Model of Outlet Calving, Dynamic Acceloration and Drawdown for the Greenland Ice Sheet

Dynamic Response of the Greenland Ice Sheet to Climate Forcing using a geophysical, Remote sensing and Numerical Modelling Framework

Dyfynnu hyn