Advertisement

You are browsing the archive for Landsat climate change glaciers Archives - AGU Blogosphere.

7 April 2022

Novosilski Glacier, South Georgia Retreat Causes Separation

Novosilski Glacier in Landsat images from 2020 and 2022. Note the retreat near Point A in particular. The terminus that extended from Point B-C developed an embayment reaching Point A. Novosilski Glacier is a large tidewater outlet glacier on the west (cloudier) coast of South Georgia terminating in Novosilski Bay It shares a divide with the rapidly retreating Ross and Hindle Glacier on the east coast.  Gordon et al. (2008) observed that larger …

Read More >>


13 May 2021

Herz Glacier, South Georgia Loses 25% of its Length 1989-2021

Landsat images from 1989-2021 of Herz Glacier.  Red arrow is 1989 terminus location, yellow arrows the 2021 terminus location. I=Iris Bay. Herz Glacier is on the southeast coast of South Georgia Island, and is adjacent to the Twitcher Glacier. The terminus change of this tidewater glacier ending in Iris Bay was completed by the British Antarctic Survey for the 1960-2011 period, see map below (Gordon et al, 2008). This map …

Read More >>


30 April 2021

Shafat Glacier Separation and Stagnation, India

Shafat Glacier in 1997 and 2020 Landsat images.  1-6 are different tributaries with the main glacier being #1. A marks the junction of #1 and #6. Shafat Glacier occupies the northeast flank of Nun Kun Peak in Ladakh India and drains into the Suru valley. The main valley glacier (1) has been fed by a decreasing number of tributaries. Shukla et al (2020) identified an increase in annual temperature has …

Read More >>


6 January 2021

Is Harlequin Lake, Alaska the fastest Growing Glacier Lake in North America this Century?

Yakutat Glacier, Alaska in 1999 and 2020 Landsat image illustrating expansion of Harlequin Lake by 40.5 km². Yellow line is the 1999 margin, orange line is the 2020 margin, and yellow dots indicate the margin of the lake shoreline. Point A indicates the 1987 terminus location, Point X and Y the 1999 terminus location. Main terminus now extends south near Point C. Northern terminus extends west from Point B. Yakutat …

Read More >>


16 November 2020

Gangotri Glacier, India Smallest Observed Accumulation Zone in 2020

Gangotri Glacier snowline averaging 5600 m on Oct. 16, 2020 in Landsat image, magenta dots indicate the snowline.  Yellow line is the Randolph Glacier Inventory margin. Tributaries: K=Kirti; G=Ghanohim, Su=Sumeru, M=Maiandi, S=Swachhand. Gangotri Glacier, India is in the Bhagirathi River watershed and is the largest glacier in the Garhwal Range of the Himalaya.  Gangotri Glacier supports hydropower as its meltwater runoff passes through three hydropower plants generating 1430 Megawatts including …

Read More >>


16 October 2020

Whiting River Headwater Glacier, British Columbia Separates into Four

Whiting River headwaters glaciers in 1984 and 2020 Landsat images.  The red arrows indicate 1984 terminus positions, yellow arrow the 2020 terminus locations, pink arrows locations of glacier detachment and purple dots the snowline. In Northwest British Columbia on the northeast side of the Stikine Icefield the Whiting Rver drains a series of glaciers, many unnamed.  Here we are focusing on a pair of glaciers just west of Whiting Lake …

Read More >>


14 September 2020

Leningradskiy Ice Cap Snowcover Vanishes in 2020 More Thinning, Svernaya Zemlya

Leningradskiy Ice Cap  north to south strip in 2000 and 2020 Landsat images illustrating thinning leading to separation of parts of the ice cap at Point 1 and 4 and expansion of bedrock leading to merging bedrock regions at Point 1 and 2. R=snow/firnpack saturated with meltwater and consequent potential refreezing. S=superimposed ice development from surface refreezing. Leningradskiy Ice Cap is oriented east to west across Bolshevik Island in the …

Read More >>


5 May 2020

Huron Glacier Retreat, Livingston Island, Antarctica 2001-2020

Huron Glacier (H) and Kaliakra Glacier (K) in 2001 and 2020 Landsat images.  Extensive retreat at bedrock locations Point A and B with limited retreat at C and D. Livingston Island, Antarctica is part of the South Shetland Island chain and is primarily covered by glaciers.  At the eastern end is Huron Glacier. Huron Glacier and the adjacent Kaliakra Glacier are tidewater outlet glaciers terminating in Moon Bay on the …

Read More >>


31 October 2019

Ongoing Evolution of Fleming Glacier, Antarctica

Fleming Glacier in 2000 and 2019 Landsat images. The 2000 glacier front is marked by red arrows on the north and south margin and red dots along the front. The 2019 glacier front is marked by yellow arrows and yellow dots. During the 1980’s the glaciologic community was focused on increasing our baseline information and monitoring of Antarctic ice shelves. An understanding that  ice shelves had  a critical role along …

Read More >>


1 October 2019

Ofhidro Glacier, Chile Retreat 1986-2019

Ofhidro Glacier glacier terminus change an accumulation zone changes from 1986-2019 in Landsat images.  Red arrow=1986 terminus, yellow arrow=2019 terminus change, orange arrows expanding bedrock areas and purple dots snowline.  Ofhidro Glacier is an outlet glacier on the northwest corner of the Southern Patagonia Icefield (SPI), that has a northern and southern arm terminating in a proglacial lake. Sakakibara and Sugiyama (2014)a examine the terminus change and velocity of SPI …

Read More >>


17 July 2019

Mendenhall Glacier, Alaska Accumulation Zone Shrinks

Mendenhall Glacier in Landsat images from 1984 and 2018.  Yellow arrows indicates 1984 terminus location, read arrow the Suicide Basin tributary and the purple dots the snowline. Mendenhall Glacier is the most visited and photographed terminus in the Juneau Icefield region. The glacier can be seen from the suburbs of Juneau.  Its ongoing retreat from the Visitor Center and the expansion of the lake it fills is well chronicled.  Here …

Read More >>


28 May 2019

Sulmeneva Bay Glacier Retreat 1990-2018, Novaya Zemlya

Sulmeneva Bay Glacier in Landsat images from 1990 and 2018.  Red arrow is the 1990 terminus location, yellow arrow the 2018 terminus location and pink dots the snowline. Here we examine an unnamed glaciers, referred to here as Sulmeneva Bay Glacier, that terminated in a piedmont lobe near the northern shore of Sulmeneva Bay and just east of Lednikovoye Lake in central Novaya Zemlya. Sulmeneva Bay is on the west …

Read More >>


12 January 2017

Recent Climate Change Impacts on Mountain Glaciers – Volume

Landsat Image of glaciers examined in the Himalaya Range: Chapter 10 that straddles a portion of Sikkim, Nepal and Tibet, China. Notice the number that end in expanding proglacial lakes.  This January a book I authored has been published by Wiley. The goal of this volume is to tell the story, glacier by glacier, of response to climate change from 1984-2015. Of the 165 glaciers examined in 10 different alpine …

Read More >>