lakes

Shrinking glaciers in Bhutan

By Alex Hyde The sub-tropical glaciers of Bhutan Bhutan is a small mountainous nation located in the Eastern Himalaya, with a population of around 727 000 people (Figure 1). The country has a sub-tropical climate in its south, where it borders lowland plains, and a Himalayan subalpine climate to the north where it meets the … Read more

Increasing risk of Glacial Lake Outburst Floods (GLOFs)

By Caroline Taylor What is a glacial lake outburst flood? Glacial Lake Outburst Floods (GLOFs) refer to the sudden release of meltwater and sediment from a dammed lake1. Across the globe there are many types of glacial lake dams, including moraine-dams, ice-dams, bedrock-dams, and landslide-dams 2, all of which can produce GLOFs.   Why are … Read more

Glacial Varved Sediments

Varved sediments (varves) refers to the annually laminated sediment deposited at the base of some lakes, or marine settings[1]. These sediments are incredible resources for researchers who look into changes in climate and environmental systems in the past. This is because they can record changes to these systems at an annual, or even seasonal resolution. … Read more

Plateau Icefields: Glacial geomorphology of Juneau Icefield

This article is based on the followed accepted and published article on Juneau Icefield geomorphology and glaciology: Davies et al., 20221, which has been published in final form at: https://doi.org/10.1002/esp.5383  Article authors: Bethan Davies, Jacob Bendle, Jonathan Carrivick, Robert McNabb, Christopher McNeil, Mauri Pelto, Seth Campbell, Tom Holt, Jeremy Ely, Bradley Markle In this article, … Read more

Structural Glaciology of Juneau Icefield

This article is based on the followed accepted and published article about Juneau Icefield: Davies et al., 20221, which has been published in final form at: https://doi.org/10.1002/esp.5383. All data produced in this work, including shapefiles and an A0 poster of the icefield, are available as supplementary data with the final published version. This article is … Read more

Glaciofluvial landforms

Glaciofluvial landforms are landforms created by the action of glacier meltwater. They can be erosional, or depositional landforms, and can form underneath, on top of, in front of, and around the edges of former glaciers.

Antarctic supraglacial lakes and ice-shelf collapse

What are supraglacial lakes? Supraglacial lakes form on the surface of glaciers. Meltwater accumulates in depressions or hollows on the ice surface. We think of the East Antarctic Ice Sheet as being very cold and dry, with temperatures well below 0°C, but in some places, surface melting does occur in the summer melt season. In … Read more

Ice-dammed lake landsystems

Ice-dammed lakes are a common feature of glaciated mountain ranges. They form wherever glacial ice blocks the drainage of rivers or meltwater. This includes: where a glacier blocks a trunk or tributary valley; and where a glacier fills an overdeepened valley created by glacial erosion Today, ice-dammed lakes exist at the margins of many mountain … Read more

Calving of freshwater glaciers

This article, while drawing on a variety of literature, is largely based on an excellent review of calving processes by Prof. Doug Benn and colleagues in the journal Earth Science Reviews. If you want to know more about glacier calving, this review paper would make a great starting point. What is calving? Calving is the glaciological … Read more

Glaciolacustrine Landforms in Patagonia, Chile

This article summarises a recent publication by the AntarcticGlaciers.org author Bethan Davies and colleagues on glaciolacustrine sediment-landform assemblages in Chilean Patagonia: Davies, B. J., Thorndycraft, V. R., Fabel, D. & Martin, J. R. V. Asynchronous glacier dynamics during the Antarctic Cold Reversal in central Patagonia. Quaternary Science Reviews 200, 287-312, (2018). Ice-dammed lakes in Patagonia … Read more

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