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You are browsing the archive for Canada glacier retreat Archives - Page 2 of 3 - AGU Blogosphere.

17 March 2017

Bridge Glacier Terminus Collapse, BC, 4 km retreat 1985-2016

Bridge Glacier comparison in 1985 and 2016 Landsat Images.  Red arrow is the 1985 terminus, yellow arrow the 2016 terminus and purple arrows indicate locations where tributaries have separated between the two dates.  Bridge Glacier is an 17 km long outlet glacier of the Lillooet Icefield in British Columbia. The glacier ends in a rapidly expanding glacial lake and had an observed retreat rate of 30 m per year from …

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15 March 2017

Klippi Glacier Retreat Causes Separation, British Columbia

Klippi Glacier in Landsat images of 1987 to 2016. Red arrows indicate 1987 terminus, yellow arrows 2016 terminus and purple dots the transient snowline.  The glacier beings at 2600 m sharing a divide with Klinaklini Glacier, flowing northwest from Silverthrone Mountain and terminating at  1040 m in 1987. Klippi Glacier drains into the Machmell River, Owikeno Lake and then River Inlet on the British Columbia Coast. The Machmell River is …

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1 March 2017

Trinity-Wykeham Glacier Retreat, Causing Separation, Ellesmere Is. Canada

Trinity (T) and Wykeham (W) Glacier in 1999 and 2016 Landsat images.  Red arrow indicates 1999 margin, yellow arrow 2016 margin, yellow dots the actual ice front.  Trinity (T) and Wykeham (W) Glacier flow east from Ellesmere Island into a fjord off of Nares Strait.  Until recently the two have been joined just before the terminus. Millan et al (2017) observed glaciers in the region.  They noted a change  in ice …

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25 January 2017

Columbia Glacier, Alberta 3 km Retreat 1986-2015

Comparison of Columbia Glacier, which is the glacier flowing into the lake at top in 1986 and 2015 Landsat images. The red arrow is the 1986 terminus, yellow arrow the 2015 terminus position and purple arrow the tributary. The Columbia Glacier drains the northwest side of Columbia Icefield into the Athabasca River in Alberta. The glacier in 1964 was 8.5 km long, by 1980 9.5 km long and in 2015 6.2 …

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20 January 2017

Penny Ice Cap Northern Outlet Retreat, Baffin Island

Penny Ice Cap Northern Outlet Glacier #43 in 1989 and 2016 Landsat images. Red arrow indicates 1989 terminus, yellow arrow 2016 terminus.  Two peripheral ice masses are at Point A and B.  The primary northern outlet from the Penny ice Cap is an unnamed glacier, noted as #43 in the recent study by Van Wychen et al (2015). it is one of two large tidewater outlet glaciers on Baffin Island. Here …

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9 January 2017

Coronation Glacier, Baffin Island Retreat Leads to Building a New Island

A Landsat image from 1989 and a Sentinel 2 image from2016 illustrate the retreat of Coronation Glacier.  Red arrows indicate the 1989 terminus and yellow arrows the 2016 terminus location.  Purple numbers 1-5 indicate locations of tributary retreat or thinning. Purple numbers 6-9 are icecaps that did not retain snowcover in 2016.  Coronation Glacier is the largest outlet glacier of the Penny Ice Cap on Baffin Island. The glacier has …

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28 December 2016

Canadian Columbia Basin Glacier Fall 2016 Field Season

Guest Post by Ben Pelto, PhD Candidate, UNBC Geography, [email protected] Figure 1. An illustration of the glacier mass balance sum. Mass balance is equal to the amount of snow accumulation and the amount of ice melt over time. Traditionally, this is reported as annual mass balance (how much mass a glacier gained or lost in a particular year) and is reported in meters water equivalent (mwe). The Columbia Basin Glacier …

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18 November 2016

Barnes Ice Cap, Baffin Island Evident Response to Climate Change

Barnes Ice Cap transect and closeup of divide area in August 2016.  Black dots indicate summit divide of the ice cap. Notice the channels extending away from the divide.  These are not stream channels, as they are too wide, but they are meltwater formed valleys that are preferred pathways for the meltwater transport. Barnes Ice Cap located in the center of Baffin Island, Canada covers an area of ~5800 km2. …

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11 October 2016

Shatter & Shudder Glacier Retreat, British Columbia Lakes Form

Red arrow is the 1985 terminus location and yellow arrow the 2016 terminus location.  Note the formatiion of new lakes at end of both glaciers. Purple dots is the transient snowline in August of each year. Shatter and Shudder Glacier are at the eastern end of the Spearhead Range in Garibaldi Provincial Park, British Columbia. Osborn et al (2007) mapped the Little Ice Age extent of the glaciers compared to …

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22 September 2016

Porcupine Glacier, BC 1.2km2 Calving Event Marks Rapid Retreat

Landsat images from Sept. 2015 and Sept. 2016.  Red arrow is the 1988 terminus and the yellow arrow the 2016 terminus.  I marks an icefall location and point A marks the large iceberg.  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 had a 1.2 square kilometer iceberg …

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23 June 2016

Canadian Columbia Basin Glacier Spring 2016 Field Season (winter 2015-2016 Assessment)

Guest Post by Ben Pelto, PhD Candidate, UNBC Geography, [email protected] During the spring season we visited our four study glaciers (Figure 1), which form a transect of the Columbia Mountains from the Kokanee Glacier in the Selkirk Range to the south, to the Conrad (Purcells) and Nordic (Selkirks) in the center, to the Zillmer of the Premier Range in the north. This post will explore the snowpack of winter 2016 across …

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20 May 2016

Clephane Bay Ice Cap, Baffin Island Being Erased from Map

Comparison of 1995 and 2014 Landsat images of ice caps A, B, C, D and E.  Pink arrows indicate where A, B and E separated. C and D have disappeared.  F is an outlet glacier with a retreating terminus. The southern part of the Cumberland Peninsula on Baffin Island features many small ice caps. Here we examine the disappearance of two and the separation of two others from 1995 to …

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24 April 2016

Pacific Northwest Glaciers: Widespread early Melt Season Arrival

  The 2016 melt season is off to an early start in Greenland, but this is not the only location.  This winter proved to be warm, but relatively wet across much of the Pacific Northwest.  A look at the average freezing level (determined by North American Freezing Level Tracker-Developed by John Abatzoglou and Kelly Redmond) from January 1 to April 20 indicates freezing levels well above average on Mount Baker …

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22 March 2016

Kiwa Glacier Retreat, British Columbia 1986-2015

Kiwa Glacier retreat from 1986 to 2015 in Landsat images.  Red arrow is 1986 terminus and yellow arrow 2015 terminus location. Purple arrow indicates upglacier thinning where more bedrock is exposed.  Purple dots indicate the transient snowline Kiwa Glacier is the longest glacier, at 9 km, in the Cariboo Mountains of  British Columbia.  The glacier drains northwest from Mount Sir Wilfred Laurier and is near the headwaters of the Fraser …

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19 November 2015

Dismal Glacier, British Columbia Prospects Match Name

Landsat image comparison from 1988 and 2015, red arrow indicates 1988 terminus and yellow arrows 2015 terminus. Purple arrows indicate thinning upglacier. Dismal Glacier flows north from Mount Durrand in the Selkirk Range of British Columbia.  It drains from 2500 m to 1950 m and its runoff flows into Downie Creek that is a tributary to the Columbia River and Revelstoke Lake.  This lake is impounded by the BCHydro Revelstoke …

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17 November 2015

Cummins Glacier Fragmentation, British Columbia

  Comparison of the Cummins Glacier from 1986 to 2015.  Purple arrows indicate upglacier thinning and disconnection. Red arrow indicates 1986 terminus position.  Note the lack of snowcover in 2015.  The Cummins Glacier is part of the Clemenceau Icefield Group in the Rocky Mountains of British Columbia. The Cummins Glacier via the Cummins River feeds the 430 square kilometer Kinbasket Lake, on the Columbia River.  The lake is impounded by the 5,946 MW Mica …

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8 October 2015

Yoho Glacier, British Columbia Accumulation Zone Woes

Yoho Glacier in 2005 no accumulation zone in sight. Yoho Glacier is the largest southern outflow draining the south from the Wapta Icefield in the Kootenay region of British Columbia. It flows 6.5 km from the 3125 m to a terminus at 2200 m. The glacier terminus reach is thin, gently sloping  and uncrevassed poised for continued retreat. An exploration of Mount Balfour in 1898 a party led by Professor …

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11 September 2015

Hess Mountain Glacier Retreat, Yukon

In the Selwyn Mountain Range, Yukon at the headwaters of the Hess River is the Hess Mountains and Keele Peake the highest peak in the region. A series of glacier radiate from this region. The Yukon Territory is host to numerous small alpine glaciers that have been rapidly losing area and volume.  From 1958-2007 glaciers lost 22% of their volume in the Yukon (Barrand and Sharp, 2010).  Due to the …

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8 September 2015

Rogue River Icefield Rapid Retreat, Selwyn Mountains, Yukon

The Selwyn Mountains, Yukon Territory are host to numerous small alpine glaciers that have been rapidly losing area and volume. David Atkinson, atmospheric scientist at University of Victoria has been examining the weather conditions leading to the extensive melting and higher snowlines. From 1958-2007 glaciers lost 22% of their volume in the Yukon (Barrand and Sharp, 2010).  Due to the high snowlines Atkinson notes the rate of retreat has increased since then. …

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1 September 2015

Mount Caubvick Glacier Retreat, Labrador

Mount Caubvick is in the Torngat Mountains of Labrador 35 km inland of the Atlantic Ocean and south of Nachvak Fjord. Way et al (2014) identified 105 active glaciers that had flow indicators in these mountains.  The mean elevation of these glaciers is quite low at 776 meters above sea level. The radiational shading and higher accumulation from protected cirque locations and proximity to the ocean are key to the low …

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