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Record #96609:

Equilibrium state of Jakobshavns Isbrae, West Greenland / M.S. Pelto, Terence J. Hughes, H.H. Brecher.

Title: Equilibrium state of Jakobshavns Isbrae, West Greenland / M.S. Pelto, Terence J. Hughes, H.H. Brecher.
Author(s): Pelto, M. S.
Hughes, Terence J.
Brecher, H. H.
Date: 1989.
Publisher: Cambridge: International Glaciological Society
In: Annals of Glaciology. (1989.), Vol. 12 (1989)
Abstract: Fastest persistent velocity of any known glacier. Measurement of surface velocities at calving front in July 1964, 1976, 1978, 1985, and 1986 yielded mean velocity of 20 m d⁻¹, with year-to-year variation of <1 m d⁻¹. Velocity measurements 10 km behind calving front indicated mean annual velocities of 17.1 m d⁻¹ compared with mid-summer velocities of 17.6 m d⁻¹: maximum possible decline in winter is then 7%. Calculation of volume flux into fjord is 3.72x10¹⁰ m³ a⁻¹±10%. Surface balance is 3.37x10¹⁰ m³\a d⁻¹±12%. Agreement between these balance calculations, long-term stability in glacier velocity, and reasonably stable glacier front indicate that glacier is in state of near equilibrium, with possible small negative balance.
Notes:

Annals of Glaciology. Vol. 12 :127-131 (1989).

Keywords: 551.324.54 -- Land ice, flow of particular glaciers: Jakobshavns Isbrae.
551.32 -- Glaciology.
551.324 -- Land ice.
551.324.43 -- Land ice, regime and mass balance: Jakobshavns Isbrae.
E5 -- Glaciology: land ice.
(*38) -- Greenland.
(*384.42) -- Ilulissat/Jakobshavn.
SPRI record no.: 96609

MARCXML

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100 1# ‡aPelto, M. S.
245 10 ‡aEquilibrium state of Jakobshavns Isbrae, West Greenland /‡cM.S. Pelto, Terence J. Hughes, H.H. Brecher.
260 ## ‡aCambridge :‡bInternational Glaciological Society,‡c1989.
300 ## ‡ap. 127-131 :‡btables, maps.
500 ## ‡aAnnals of Glaciology. Vol. 12 :127-131 (1989).
520 3# ‡aFastest persistent velocity of any known glacier. Measurement of surface velocities at calving front in July 1964, 1976, 1978, 1985, and 1986 yielded mean velocity of 20 m d⁻¹, with year-to-year variation of <1 m d⁻¹. Velocity measurements 10 km behind calving front indicated mean annual velocities of 17.1 m d⁻¹ compared with mid-summer velocities of 17.6 m d⁻¹: maximum possible decline in winter is then 7%. Calculation of volume flux into fjord is 3.72x10¹⁰ m³ a⁻¹±10%. Surface balance is 3.37x10¹⁰ m³\a d⁻¹±12%. Agreement between these balance calculations, long-term stability in glacier velocity, and reasonably stable glacier front indicate that glacier is in state of near equilibrium, with possible small negative balance.
650 07 ‡a551.324.54 -- Land ice, flow of particular glaciers: Jakobshavns Isbrae.‡2udc
650 07 ‡a551.32 -- Glaciology.‡2udc
650 07 ‡a551.324 -- Land ice.‡2udc
650 07 ‡a551.324.43 -- Land ice, regime and mass balance: Jakobshavns Isbrae.‡2udc
650 07 ‡aE5 -- Glaciology: land ice.‡2local
651 #7 ‡a(*38) -- Greenland.‡2udc
651 #7 ‡a(*384.42) -- Ilulissat/Jakobshavn.‡2udc
700 1# ‡aHughes, Terence J.
700 1# ‡aBrecher, H. H.
773 0# ‡7nnas ‡tAnnals of Glaciology. ‡gVol. 12 (1989) ‡wSPRI-60773
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20220926