Intermittent thinning of Jakobshavn Isbræ, West Greenland, since the Little Ice Age

  title={Intermittent thinning of Jakobshavn Isbr{\ae}, West Greenland, since the Little Ice Age},
  author={Be{\'a}ta M. Csath{\'o} and Toni Schenk and C. J. van der Veen and William B. Krabill},
  journal={Journal of Glaciology},
  pages={131 - 144}
Abstract Rapid thinning and velocity increase on major Greenland outlet glaciers during the last two decades may indicate that these glaciers became unstable as a consequence of the Jakobshavn effect (Hughes, 1986), with terminus retreat leading to increased discharge from the interior and consequent further thinning and retreat. To assess whether recent trends deviate from longer-term behavior, we measured glacier surface elevations and terminus positions for Jakobshavn Isbræ, West Greenland… 

Interruption of two decades of Jakobshavn Isbrae acceleration and thinning as regional ocean cools

Jakobshavn Isbrae has been the single largest source of mass loss from the Greenland Ice Sheet over the last 20 years. During that time, it has been retreating, accelerating and thinning. Here we use

Simulated retreat of Jakobshavn Isbræ since the Little Ice Age controlled by geometry

Abstract. Rapid retreat of Greenland's marine-terminating glaciers coincides with regional warming trends, which have broadly been used to explain these rapid changes. However, outlet glaciers within

A century of geometry and velocity evolution at Eqip Sermia, West Greenland

Rapid dynamic changes of ocean-terminating outlet glaciers of the Greenland ice sheet are related to atmospheric and oceanic warming but the detailed link to external forcing is not well understood.

Volume change of Jakobshavn Isbræ, West Greenland: 1985–1997–2007

Abstract Following three decades of relative stability, Jakobshavn Isbræ, West Greenland, underwent dramatic thinning, retreat and speed-up starting in 1998. To assess the amount of ice loss, we

Iceberg calving dynamics of Jakobshavn Isbrae, Greenland

Jakobshavn Isbræ, a fast-flowing outlet glacier in West Greenland, began a rapid retreat in the late 1990’s. The glacier has since retreated over 15 km, thinned by tens of meters, and doubled its

Simulated retreat of Jakobshavn Isbræ during the 21 st 1 century 2

12 The early in the 21st century retreat of Jakobshavn Isbræ, one of Greenland’s largest outlet glaciers, 13 into its over-deepened bedrock trough was accompanied by acceleration to unprecedented

Non-linear retreat of Jakobshavn Isbræ since the Little Ice Age controlled by geometry

Rapid acceleration and retreat of Greenland’s marine-terminating glaciers during the last two decades have initiated questions on the trigger and processes governing observed changes. Destabilization

Multi-decadal retreat of Greenland’s marine-terminating glaciers

Abstract Many marine-terminating glaciers draining the Greenland ice sheet have retreated over the past decade, yet the extent and magnitude of retreat relative to past variability is unknown. We

Glacier dynamics at Helheim and Kangerdlugssuaq glaciers, southeast Greenland, since the Little Ice Age

Abstract. Observations over the past decade show significant ice loss associated with the speed-up of glaciers in southeast Greenland from 2003, followed by a deceleration from 2006. These



Investigation of surface melting and dynamic thinning on Jakobshavn Isbrae, Greenland

Jakobshavn Isbrae is the most active glacier in Greenland, with an annual discharge of about 30 km 3 of ice, and it is one of the few recently surveyed glaciers to thicken between 1993 and 1998,

Jakobshavn Glacier, west Greenland: 30 years of spaceborne observations

Early 1960's reconnaissance satellite images are compared to more recent image and map data in an interannual and seasonal study of West Central Greenland margin fluctuations. From 1962 to 1992, ice

Large fluctuations in speed on Greenland's Jakobshavn Isbræ glacier

Remote sensing data is used to measure the velocity of Jakobshavn Isbræ to indicate that fast-flowing glaciers can significantly alter ice discharge at sub-decadal timescales, with at least a potential to respond rapidly to a changing climate.

Jakobshavns Isbræ, West Greenland: seasonal variations in velocity -- or lack thereof

Abstract The lower 80 km of the fast-moving Jakobshavns Isbræ, West Greenland, is subject to significant melting during the summer season. The melt water drains into large supraglacial rivers which

Surficial glaciology of Jakobshavns Isbræ, West Greenland: Part I. Surface morphology

Abstract Jakobshavns Isbræ is a large, fast-moving ice stream/outlet glacier in West Greenland which ends at a floating, calving front. It drains about 6.5% of the area of the Greenland ice sheet.

Thickening of Jakobshavns Isbræ, West Greenland, measured by airborne laser altimetry

NASA flights over southern Greenland in 1991, 1992 and 1993, using a scanning laser altimeter with Global Positioning System (GPS) navigation, have demonstrated a capability to measure ice-surface

Large Fluctuations in Speed on Jakobshavn Isbrae, Greenland

We have assembled an 18-year velocity record for Jakobshavn Isbrae, Greenland. From a 1985 speed of approx. 7000 m/yr, the glacier had slowed by approx. 1000 m/ yr in 1992, which coincided with

The Jakobshanvs effect

The Jakobshavns Effect may have been a significant factor in hastening the collapse of palaeo ice sheets with the advent of climatic warming after 18,000 years ago and may precipitate partial

Survey of Greenland instrumental temperature records: 1873–2001

  • J. Box
  • Environmental Science
  • 2002
Temporal and spatial variability are analysed in Greenland instrumental temperature records from 24 coastal and three ice sheet locations. Trends over the longest period available, 1873–2001, at