Last week, the EGU Cryosphere Blog (“Cryoblog” for the regulars) team was contacted by a reader who stumbled upon very curious ice formations while taking a morning walk in rural Berkshire, England. This was right after a few nights with below-freezing temperatures and snowfall. He asked us whether we could explain to him what these ice mushrooms were and how they formed. Very curious and always k ...[Read More]
Image of the Week – Why is ice colourful?
Figure 1: Thin sections (~9 cm in height) from Alpine glacier ice at 1 mm thickness before polishing photographed under crossed polarisers [Credit: Johanna Kerch]
When you think of glacier ice, what colour first springs to mind? Maybe white, blue or transparent? Well, glacier ice can, in fact, be mesmerising and multi-coloured! Our image of the week shows thin sections of glacier ice under polarised light. These sections were cut from block samples of two Alpine glaciers in Switzerland (Chli Titlis and Grenzgletscher). In these images the individual ice c ...[Read More]
Image of the Week – Broccoli on Kilimanjaro!
Figure 1: “Broccoli” bubbles in ice from Kilimanjaro seen in a close-up Photograph. The bubbles look like they are about to explode in the ice. In between the “Broccoli” bubbles are bubbles that look like little disks or bowls, all flattened along the same plane within an volume which is around one ice
grain. Ripples in the background originate from the band saw used to cut this ice. The ice slab is approx. 1 cm thick and microtome-polished on the surface [Credit: Johanna Kerch]
On the plateau of Kilimanjaro, Tanzania, the remnants of a glacier can be found and the ice from that glacier contains a rather interesting feature – Broccoli! Not the vegetable, but bubbles that look a lot like it. Our Image of the Week shows some of these strange “Broccoli Bubbles”. Read on to find out more about where these were found and how we can see them. There is not much ice left on the m ...[Read More]
Image of the Week – Ice Stupas: a solution for Himalayan water shortage?
Ice cones in the high altitude deserts of Ladakh, Himalayas. [Credit: Dadul Lobzang, Ice Stupa Project]
As the world searches for practical innovations that can mitigate the impact of climate change, traditional methods of environmental management can offer inspiration. In Hindu Kush and Karakoram region, local people have been growing, or grafting, glaciers for at least 100 years. Legend has it that artificial glaciers were grown in mountain passes as early as the twelfth century to block the advan ...[Read More]
Image of the Week – When the dirty cryosphere destabilizes!
Figure 1: Thermokarst development due to melt and drainage of below-ground massive ice, NE Greenland [Credit: Laura Helene Rasmussen]
Ice is usually something you see covering large ocean areas, mountain tops and passes or as huge sheets in polar regions. This type of ice is clearly visible from space or with the naked eye. There is, however, a large volume of ice that is less visible. This ice is distributed over the polar and high alpine permafrost regions; and is the ice hidden below ground. It might be hidden, but that doesn ...[Read More]
Image of the Week – Ice lollies falling from the sky
You have more than probably eaten many lollipops as a kid (and you might still enjoy them). The good thing is that you do not necessarily need to go to the candy shop to get them but you can simply wait for them to fall from the sky and eat them for free. Disclaimer: this kind of lollies might be slightly different from what you expect… Are lollies really falling from the sky? Eight years ag ...[Read More]
Image of the Week – Ice on Fire (Part 2)
A glacier cave on the flank of Mutnovsky volcano, Kamchatka Peninsula, Russia. Sunlight filters through the glacial ice and a stream runs through the cave - fed by volcanic hot springs [Credit: Sergey Krasnoshchokov, National Geographic].
This week’s image looks like something out of a science fiction movie, but sometimes what we find on Earth is even more strange than what we can imagine! Where the heat of volcanoes meets the icy cold of glaciers strange and wonderful landscapes are formed. The Kamchatka Peninsula, in the far East of Russia, has the highest concentration of active volcanoes on Earth. Its climate is cold due ...[Read More]
Image of the Week – Goodness gracious, great balls of ice!
Ice balls on Stroomi beach, Estonia. [Credit: Aleksandr Abrosimov, Wikimedia ].
At first glance our image of the week may look like an ordinary stoney beach…but if you look more closely you will see that this beach is not, in fact, covered in stones or pebbles but balls of ice! We have written posts about many different weird and wonderful ice formations and phenomena (e.g. hair ice or ice tsunamis) here at the EGU Cryosphere blog and here is another one to add to the l ...[Read More]