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June 14, 2018

Coutts Ice Cap, Baffin Island Fragmentation

Coutts Ice Cap in  Landsat images from 1986 and 2017.  The terminus location of the main glacier terminating in the large lake is indicated by dots.  Tributary Glaciers 1-6 represent locations where glaciers have separated or a glacier has retreated from a lake.  Coutts Ice Cap is on between Coutts Inlet to the west and Buchan Gulf to the east on the north shore of Baffin Island near its northeastern …

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June 11, 2018

Kokthang Glacier Retreat, Sikkim Himalaya, India Doubles Lake Size

Kokthang Glacier in 1988 and Feb. 2018 Landsat imagery. The red arrow indicates the 1988 terminus and the yellow arrow the upstream end of the lake beyond which the glacier has retreated in 2018.  The purple dots indicate the snowline.  Kokthang Glacier drains south from the Kokthang Peak a satellite peak on the south side of the Kanchenjunga Massif, Sikkim in India, the next valley south of East Rathong Glacier. …

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June 5, 2018

Warm Creek Glaciers, British Columbia Retreat Driven Separation

Warm Creek, (W) Norht Warm Creek (NW) and Bighorn (H) Glaciers in Northwest British Columbia in 1984 and 2017.  Red arrows are the 1984 terminus location, yellow arrows the 2017 terminus locations and purple arrows where glaciers have separated.  In Northwestern British Columbia a group of unnamed glaciers drain into Tagish Lake via Warm Creek and Bighorn Creek.  Here we examine the profound changes in three glaciers from 1984 to …

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June 1, 2018

Schlegies Glacier, Austria Response to Climate Change: Segmentation

Schlegies (S), Furtschagl (F), Hornkees (H) and Waxeggkees (W) in 1990 and 2017 Landsat images.  Red arrows indicate the 1990 terminus location and pink arrows indicate locations where the Schlegies (S) and Furtschagl (F) separated. Schlegies Reservoir (SC) near top.  In August, 1990 you could have skied 5.5 km across the width of the Schlegies (S) and Furtschagl (F) Glaciers in the Zillertal Alps, Austria without taking your skis off. …

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May 29, 2018

Sherman Glacier, Alaska Diminishing Protective Blanket=Mass Loss

Sherman Glacier, Alaska in Landsat images from 1987 and 2017.  Black arrows indicate tributaries on north side. Purple dots indicate the snowline. Point A indicates a depression formed from lateral recession. Also notice how the debris cover has with glacier flow been shifted downglacier.  Sherman Glacier is in the Chugach Mountains of southern Alaska and is famous for the large landslide triggered by the magnitude 9.0 Good Friday earthquake in …

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May 24, 2018

Suhai Hu Ice Cap, China Outlet Glacier Retreat

Suhai Hu, Quilian Mountains Ice Cap in 1999 and 2016 Landsat image indicating five different outlet glacier termini that all ended in proglacial lakes in 1999 and all retreated significantly by 2016.  Here we examine an unnamed icecap that I refer to as the “Suhai Hu” Ice Cap and five of its largest outlet glaciers in the Qilian Mountains in northwest China, with Landsat imagery from 1999-2016.  The northern outlet …

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May 17, 2018

Winter Season Ablation in 2018 Mount Everest Region, Himalaya

Landsat images from Nov. 17 2017 and Feb. 10 2018 indicate a rise in the snowline, purple dots, on glaciers east of Mount Everest, indicating ablation even in winter from the terminus to the snowline. Rongbuk Glacier=R, East Rongbuk Glacier=ER Far East Rongbuk Glacier=F, Kada Glacier=K,  Barun Glacier=B,  Imja Glacier=I and Kangshung Glacier=KX. The Mount Everest region glaciers are summer accumulation type glaciers with 70% of the annual precipitation occurring …

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May 15, 2018

Popof Glacier Retreat, Alaska Features Tributary Separation

Popof Glacier comparison in 1986 and 2016 Landsat images. Red arrow is the 1986 terminus location, yellow arrows the 2016 terminus location, pink arrows indicate two key tributaries and purple dots indicate the snowline. Popof Glacier is at the southern end of the Stiking Icefield in southeast Alaska.  In 1948 the glacier had two terminus sections  that separated around Mount Basargin and then rejoined.  By 1979 the glacier termini were …

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May 10, 2018

Ablation Variation with time Across Variable Glacier Surface

This post was prompted by comments from Ruth Mottram about funding for ablation process studies and the work by Fausto et al (2016) that noted non-radiative forces dominated the energy fluxes for ablation on the Greenland Ice Sheet during a period of  high ablation in July 2012.  This reminded me of a study we conducted some 25 years ago on the variation of ablation through time across a variable glacier …

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May 4, 2018

Tulsequah Glacier, British Columbia 2900 m retreat 1984-2017

Tulsequah Glacier in 1984 and 2017 Landsat images.  The 1984 terminus location is noted with red arrows for the main and northern distributary tongue, southern distributary red arrow indicates lake margin.  The yellow arrows indicate the 2017 glacier terminus locations. The retreat of 2900 m since 1984 led to a lake of the same size forming. Purple dots indicate the snowline. Tulsequah Glacier, British Columbia is a remote glacier draining …

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