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July 20, 2022

Glacier Landslides and Collapses Preconditioned by Warming

Lamplugh Glacier, Alaska in 2015 (before) and 2016 (after) landslide in Landsat images. The Landslide covered 17 km2 of the glacier, yellow dots. B=Brady, L=Lamplugh, R=Reid Glacier. Ice whether as permafrost, in a glacier, filling cracks or coating surfaces literally helps stabilize materials on mountain slopes. Climbers who ascend glaciated peaks have long practiced early starts to avoid the heat of the day. The goal to avoid falling, rock, ice …

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July 19, 2022

Swiss Alps Exceptionally High Glacier Snowlines Mid-July 2022

Rhone Glacier snowline at end of 2003 melt season, July 9, 2022 and July 17, 2022. Rhone Glacier Sentinel images indicating the snowline position mid July 2021 and 2022 and mid-June 2022. Rhone Glacier Sentinel images indicating the snowline position at the end of the melt season in 2018 and July 18, 2022.  Rhone Glacier is a temperate valley glacier and is the primary headwaters for the Rhone River. Easy …

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July 6, 2022

Alsek Glacier, Alaska Releases its own Fireworks-Iceberg Discharge July 2022

Alsek Glacier, Alaska in a Sentinel Image from July 1, 2022 indicating an area of rapid recent calving, red dots. The northern tongue has accelerated in the last six year (NASA ITS_Live). Alsek Glacier descends from the Fairweather Range terminating in Alsek Lake on the coastal plain. The glacier terminated at Gateway Knob (G) near the outlet of Alsek River from Alsek Lake in the early part of the 20th …

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June 30, 2022

Zarilang Glacier, China Retreat and Lake Expansion

Zarilang Glacier in 1998 and 2021 Landsat images illustrating glacier retreat and lake expansion. Point A marks the junction of two tributaries. Zarilang Glacier, China  flows north from the Bhutan border is in the Yarlung Zangbo River watershed draining the northwest flank of Kula Kangri. Yarlung Zangbo which becomes the Brahmaputra River supplies the Zangmu Dam (510 MW), online in 2015, that produces 2.5 billion kwh of electricity a year. …

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June 20, 2022

Heat Wave Leads to Rapid Glacier Snowcover Loss in Alps

Grande Murailles Glacier, Italy (GM) in June Sentinel images. The yellow line is the glacier margin, the expansion of bare glacier ice from 1-3% of the glacier on June 10 to 20% of the glacier by June 18 is evident. The snowline is ~3200 m. The heat wave during the last week that has impacted western Europe and the Alps has led to a predictable impact on glaciers (WMO, June …

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June 16, 2022

Todd Icefield, British Columbia Retreat and Separation

Todd Icefield in 1987 and 2020 Landsat images illustrating retreat and separation. Red arrows indicate 1987 terminus location, Point A indicates location where the glacier has separated. Point B and C are locations of expanding bedrock high on the icefield. Point D is further glacier separation. Todd Icefield is an icefield 30 km northeast of Stewart BC at the head of Portland Canal, with Todd Glacier being the main outlet …

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June 9, 2022

Hayesbreen, Svalbard Retreat Generating Separation

Hayesbreen (HB), Heuglinbreen (HE) and Konigsbergbreen (KB) terminating in Mohnbutka (M) in 2002 and 2021 Landsat imagery. Retreat to Point E, and reduction in connection at Point B is evident and distance from Point A to the terminus.  Hayesbreen, Heuglinbreen and Konigsbergbreen merge forming a single tidewater front in Mohnbutka on the east coast of Svalbard. Here we examine the retreat of this glacier system and ongoing separation of Hayesbreen …

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June 2, 2022

Grand Pacific Glacier Losing its Grand and Pacific Connection

Grand Pacific Glacier in 1984 and 1999 Landsat images. Red arrow indicates the front of the clean ice flow of the Grand Pacific that also marks its lateral boundary with Ferris Glacier.  B and C indicate locations where tributary tongues have been retreating from the main glacier. M is the Margerie Glacier. Grand Pacific Glacier in 2015 and 2021 Landsat images. Red arrow indicates the front of the clean ice …

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May 25, 2022

Lake Fork Knik River Headwater Glaciers, Alaska Retreat, Separation and Lake Expansion

Glaciers in the Lake Fork Knik River watershed  in 1986 and 2021 Landsat images. LG=Lake George Glacier and WO=Whiteout Glacier with the remainder unnamed, labelled here as W=West, NW=Northwest and SE=Southeast. Red arrows mark 1986 terminus locations and yellow dots the 2021 terminus locations. At the headwaters of the Lake Fork of the Knik River are a series of glaciers undergoing retreat and separation. The headwaters is dominated by the …

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May 15, 2022

Sollipulli Volcano Glacier Recession Snow Cover Deficit

Landsat images of Sollipulli from 1986 and 2022. Point A-D are locations where the glacier spilled out of the caldera in 1986, but no longer does so in 2022. Nevados de Sollipulli is a volcano, is in the central Andes of Chile near the border with Argentina in Parque Nacional Villarica, Chile. The 4 km wide summit caldera at ~2100 m is filled by a glacier. The volcano is dormant …

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