Advertisement

September 23, 2019

Orsabreen, Svalbard Retreat leads to Lake Tripling in Size

Response of Orasbreen (O), Glopeken (G) and Holmstrombreen (H) to climate change as indicated by 1995 and 2019 Landsat images.  Red arrow is 1995 terminus, yellow arrow 2019 terminus, pink arrows a deepening supraglacial stream channel and purple dots the snowline. Orsabreen terminates in an expansing prolgacial lake, Trebrevatnet, that is shared with a glacier it has separated from Holmstrombreen. The glacier shares an accumulation zone with Kronebreen, a glacier …

Read More >>



September 17, 2019

Gilkey Glacier Retreat Leads to Rapid Lake Expansion in 2019

Gilkey Glacier in 1984 and 2019 Landsat images indicating retreat of 4300m, tributary separation and 5 km2 lake expansion. A=Terminus tongue, B=Battle Glacier, G=Gilkey Glacier and T=Thiel Glacier. Gilkey Glacier draining the west side of the Juneau Icefield has experienced dramatic changes since I first worked on the glacier in 1981.   The Gilkey Glacier is fed by the famous Vaughan Lewis Icefall at the top of which Juneau Icefield …

Read More >>



September 12, 2019

Glacier Crevasses As A learning Tool

Guest Post by Clara Deck Instagram: @scienceisntsoscary   Crevasses on mountain glaciers are large cracks in the ice which often propagate from the surface downward. The initial break will happen when stress exceeds the inherent ice material strength. This article will focus on surface crevasses, though this basic physical understanding also applies to basal crevasses or large-scale rifts in ice sheet and shelf settings.   In mountain glacier systems, crevassing …

Read More >>



September 9, 2019

Retreat of West Barun Glacier and Barun Tsho expansion, Nepal 1994-2018

West Barun Glacier terminus retreat and lake expansion in 1994 and 2018 Landsat images. Red arrow is the 1994 terminus location, yellow arrow the 2018 terminus location, green arrow Seto Pohkari and purple dots the snowline. The West Barun Glacier flows southwest from Baruntse Peak at 7100 meters ending at  Lower Barun Tsho (Barun Tsho) at 4500 meters. Comparison of Landsat images from 1994, 2000, 2015 and 2019 indicate the …

Read More >>



September 3, 2019

Hutchinson Glacier, Greenland Releases New Island

Cape Deichmann becomes an island as it disconnects from Hutchinson Glacier. Landsat images from 2010 and 2019. The Hutchinson (H) and Polaric Glacier (P) region of East Greenland indicating three locations of island forming or about to form in 2010 and 2019 Landsat images.  Point #1 is Flado Island, Point #2 and Point #3 is Cape Deichmann Ziaja and Ostafin (2019)  noted the formation of a new island at Cape …

Read More >>



August 29, 2019

North Cascade Glacier Climate Project 2019, 36th Annual Assessment

 The summer of 2019 found the North Cascade Glacier Climate Project in the field for the 36th consecutive summer monitoring the response of North Cascade glaciers to climate change.  This long term monitoring program was initiated partly in response to a challenge in 1983 from Stephen Schneider to begin monitoring glacier systems before and as climate change became a dominant variable in their behavior. The field team was comprised …

Read More >>



August 22, 2019

The Disappearance of Multiple Baffin Island Glaciers 2002-2019

Glaciers at Point A and B have melted completely away. The commemoration of a single disappearing glacier in Iceland, Okjokull has brought attention to what is quite a common event this decade, glacier disappearance. Here we report on a number of glaciers in the southern part of the Cumberland Peninsula, Baffin Island  that have either disappeared or separated into several parts  from 2002-2019. Way (2015) noted that on the next peninsula …

Read More >>



August 17, 2019

Alpine Glaciers-BAMS State of Climate 2018

Figure 1. Global Alpine glacier annual mass balance record of reference glaciers submitted to the World Glacier Monitoring Service, with a minimum of 30 reporting glaciers. For the last decade I have written the section on Alpine Glaciers for the BAMS State of the Climate report, the 2018 report was published this week, below is the section on alpine glaciers.  The key data resources is  the World Glacier Monitoring Service …

Read More >>



July 29, 2019

36th Annual North Cascade Glacier Climate Project Field Season Begins

Fieldwork includes terminus surveys, glacier runoff measurement and mass balance measurements Field Season Begins August 1 Who we are? The North Cascade Glacier Climate Project (NCGCP) was founded in 1983 to identify the response of North Cascade glaciers to regional climate change, particularly changes in mass balance, glacier runoff and terminus behavior.   This was prompted by the  National Academy of Sciences listing this as a high priority and a personal …

Read More >>



July 25, 2019

Porcupine Glacier Major Iceberg Turns 3 Years Old, What Next?

Porcupine Glacier in Landsat images from 2016 and 2018 and 2019 Sentinel Image.  Iceberg A and Ice tongue B are indicated on each. The haziness in 2019 is forest fire smoke. The yellow arrows mark the 2019 terminus location. Porcupine Glacier is a 20 km long outlet glacier of an icefield in the Hoodoo Mountains of Northern British Columbia that terminates in an expanding proglacial lake. During 2016 the glacier …

Read More >>