Advertisement

You are browsing the archive for Canada glacier retreat Archives - From a Glacier's Perspective.

June 5, 2017

Llewellyn Glacier, BC Proglacial Lake Merging From Retreat

Llewellyn Glacier comparison in 1984 Landsat and 2016 Sentinel images.  Red arrows the 1984 terminus locations for proglacial lakes A-D, yellow arrows the 2016 terminus locations for A and B. Point E was the peninsula separating proglacial lakes A and B, which are now joined due to glacier retreat.  The second largest glacier of the Juneau Icefield is the Llewellyn Glacier which is in British Columbia. The Juneau Icefield Research …



Read More >>


May 11, 2017

Borden Peninsula Ice Caps, Baffin Island Snowcover Where Art Thou

Borden Peninsula Ice Cap in 1997 and 2016 Landsat images.  Purple dots indicate the transient snowline.  Orange arrows indicate specific location of glacier thinning, retreat or area loss.  The Borden Peninsula is in the northeastern most section of Baffin Island.  Here we examine an ice cap that is on the edge of Lancaster Sound in Sirmilik National Park.  We use Landsat imagery from 1997 through 2016 to identify change.  This …



Read More >>


April 14, 2017

Swiftcurrent Glacier, British Columbia, Swiftly Retreating 1986-2015

Swifttcurrent Glacier Comparison from 1986 and 2015 Landsat images.  Red arrow is the 1986 terminus, yellow arrow 2015 terminus, purple arrow significant tributaries in 1986, and purple dots the snowline. Swiftcurrent Glacier drains the southeast side of Mount Longstaff 15 km NW of Mount Robson.  The glacier is near the headwaters of the Fraser River, and its retreat since 1986 has led to the formation of a new alpine lake. Here …



Read More >>


April 12, 2017

Beautiful British Columbia Land of Many Mountains & Dwindling Glaciers

  British Columbia is host to many mountain ranges; Purcell, Monashee, Bugaboo, Selkirk, Cariboo, Coat Range, Kootenay, Kwadacha are just some of the diverse mountain ranges  that host glaciers and span climate zone. A shared characteristic today regardless of climate zone or mountain range is dwindling glacier size and volume.  Bolch et al (2010) found that from 1985-2005 Alberta glaciers lost 25% of their area and BC glaciers 11% of …



Read More >>


March 17, 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 …



Read More >>


March 15, 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 …



Read More >>


March 1, 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 …



Read More >>


January 25, 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 …



Read More >>


January 20, 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 …



Read More >>


January 9, 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 …



Read More >>