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December 13, 2018

AGU Poster Hall-Cryosphere Perspectives

The American Geophysical Union Fall meeting’s Cryosphere section continues to grow as seen in the Poster hall.  The poster hall is where most of the research is presented and is dominated by student work.  Here are some examples of this work. Erin McConnell, UMaine and others examined shallow ice cores from glaciers in the St. Elias Mountains of Canada’s Yukon as part of a project to reconstruct past climate variability …

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December 4, 2018

San Quintin Glacier High Calving Rate Observations in 2018

San Quintin Glacier in 4-16-2017 Sentinel image, red dots indicate terminus location then. Yellow dots the terminus location  on 11-10-2018. San Quintin Glacier in 3-20-2018 Sentinel image, pink dots indicate terminus position.  San Quintin Glacier in 11-10-2018 Sentinel image. Yellow dots the terminus location  on 11-10-2018, pink dots from 3-30-2018 and red dots from 4-16-2017.  San Quintin is the largest glacier of the NPI at 790 km2 in .  The glacier …

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November 27, 2018

Glacier O’Higgins Calving Front Changes 1986-2018

Glacier O’Higgins in 1986 and 2018 Landsat images. Red arrow and line is the 1986 terminus position, pink line the 2002 terminus, green line the 2013 terminus, yellow arrows the 2018 terminus location, purple dots the snowline. Point A, B and C are locations at the margin of the glacier. Glacier O’Higgins is a large outlet glacier of the Southern Patagonia Icefield (SPI) that terminates in Lago O’Higgins. Cassasa et …

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November 19, 2018

35th Annual Field Observations of North Cascade Glaciers

The 2018 field season observations, conditions and summary. Field team Mariama Dryak, Erin McConnell, Jill Pelto and Mauri Pelto. For the 35th consecutive year I headed to the North Cascade Range, Washington to monitor the response of glaciers to climate change.  Two of the glaciers the North Cascade Glacier Climate Project (NCGCP) monitors are now part of the 42 glaciers comprising the World Glacier Monitoring Service  (WGMS) reference glacier network, …

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November 15, 2018

Cerro Tronador Glacier, Argentina Retreat and Lake Formation

Cerro Tronador glaciers in Landsat images from 1985, 1998 and 2018.  A=Alerce, CO=Castana Overo, VN=Ventisquero Negro.  Red arrows mark the 1985 glacier terminus locations, yellow arrows the 2018 terminus location of VN, pink arrow the location of the 2009 dam breach outwash plain deposit, and purple arrow location of a bedrock outcrop.  Cerro Tronador with a summit elevation of 3428 m straddles the Chile/Argentina border east of Lago Todos los …

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November 8, 2018

Reru Glacier, Kashmir Retreat and Lake Expansion

Reru Glacier in 1998 and 2018 Landsat images.  The red arrow indicates the 1998 terminus location, the pink arrow a recent landslide, Point 1 and 2 are tributaries that are losing connection with the main glacier and purple dots are the snowline. Reru Glacier, Kashmir is at the headwaters of the Reru River, which drains into the Doda River and then the Zanskar River.  Murtaza et al (2017) noted a …

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November 2, 2018

Breney Glacier Switzerland Accelerating Retreat 1988-2018

Breney Galcier, Switzerland in Landsat images from 1988 and 2018.  Red arrow = 1988 terminus location, yellow terminus =2018 and purple dots the snowline.  B=Breney Glacier, G=Gietro Glacier, L=Lateral Moraine, M=Lac Mauvoisin and O=Otemma Glacier. Breney Glacier (B) is in the next valley to the north of Otemma Glacier (O) and south of Gietro Glacier (G), it  flows southwest into Lac de Mauvoisin (M). Breney Glacier is one of the …

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October 30, 2018

Wrangell Mountain Icefields, Alaska Lose their Snowcover 2016 and 2017

Mount Gordon Icefield (MG) Mesa Creek Icefield (MC) and Icefield Plateau (IP) in 2016 and 2017 Landsat imagery.  The purple dots indicate the areas with retained snowcover in both years. Nabesna Glacier (N) is the largest glacier in the Wrangell Mountains, just a corner seen here. Mount Gordon Icefield (MG) Mesa Creek Icefield (MC) and Icefield Plateau (IP) are three neighboring Icefields in the Wrangell-Saint Elias National Park and Preserve …

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October 26, 2018

Lapche Glacier, China Supraglacial Ponds Transitioning to Lake

Lapche Glacier (Tibet 1), China in 1992 and 2018 Landsat images.  The expansion of supraglacial ponds is evident between Point 2 and 3. A tributary that detaches between 1992 and 2018 is indicated by red arrow.  The end of the clean ice and start of debris cover ice is just below Point 1 in 1992 and well above this Point in 2018.  Lapche Glacier (Tibet 1), China flows east from …

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October 23, 2018

Sermip Nunataa, Greenland No Longer a Nunatak

Sermip Nunataa (S) and nearby nunataks in 1993, Q, R and B in 1993 and 2018 Landsat images.  Red dots indicate the 1993 margin.  Sermip Nunataa (Nunatak-Island within ice sheet glacier) was a nunatak of the southern Greenland Ice Sheet between Sermilik Brae and Sondre Qipisaqqu Brae.  Here we examine changes from 1993-2018 of the margin of the ice sheet in the area and the impact on this and neighboring …

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