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In many countries, access to clean and safe to drink water is often taken for granted: the simple act of turning a tap gives us access to a precious resource. In today’s post,Bárbara Zambelli Azevedo, discusses how over population of coastal areas and a changing climate is putting ready access to freshwater supplies under threat. Water is always moving downwards, finding its way until it ge ...[Read More]
The Tasman Glacier Terminal Lake, seen in this photograph, lies in the Aoraki Mount Cook National Park in New Zealand’s south island. The photographer, Martina Ulvrova, stated she “finally got to see the largest glacier in New Zealand after several days of heavy rain, during which the landscape was bathing in mist”. The Tasman Glacier is 23 km long and is surrounded by a terminal proglacial lake w ...[Read More]
The Greenland ice sheet is undergoing rapid change, and nowhere more so than at its margins, where large outlet glaciers reach sea level. Because these glaciers are fed by very large reservoirs of ice, they don’t just flow to the coast, but can extend many kilometres out into the ocean. Here, the ice – being lighter than water – will float, but remain connected to the ice on the mainland. This phe ...[Read More]
The Gap, the Bridge, and the Game-changer are three series of satellites. They carry instruments that measure the microwave radiation emitted by the Earth (called passive microwave instruments), while flying 800 km above our heads at 7,5 km/s. Since the late 1970s, most sea ice properties (concentration, extent, area, velocity, age and more!) have been measured with such passive microwave instrume ...[Read More]
Scientific research is no doubt enriched by interdisciplinarity and collaborations which cross borders. This, combined with the scarcity of academic positions and the need to further ones horizons by experiencing varied research environments, leads many scientists to relocate (if only on a short term basis) to a country which is not their own. In today’s post, freelance science writer Rober ...[Read More]
Lava domes form when lava is extruded from a volcanic vent, but is too viscous to flow far away. Think of thick treacle that does not flow as easily as runny honey, and so when it is extruded, it forms a “lava pile” around the vent. Lava domes commonly form within the crater of a larger volcano (e.g. Mt. St. Helens), but can also stand alone or form part of a “dome complex”. A lava dome can take o ...[Read More]
As NhET, we have the pleasure to have Mauro Agate as our guest and interviewee today. We discuss about submarine canyons and related geo-hazards. Further details will be available at: http://www.sciencedirect.com/science/article/pii/S0967064513002488 for a scientific-oriented audience; or https://www.youtube.com/channel/UCwWErQNoZYpJhhkxPa82x5g for a broader audience. Dr. Mauro Agate is a ...[Read More]
Snow, sub-zero temperatures for several days, and then back to long grey days of near-constant rain. A normal winter week in Gothenburg, south-west Sweden. Yet as I walk home in the evening, I can’t help but notice that piles of ice have survived. Using the equations that I normally need to investigate the demise of Greenland glaciers, I want to know: how hard can it be to melt this pile of ice by ...[Read More]
Kerry Leith from the Engineering Geology Department at the ETH Zürich set up a post on their latest publication and the backstory behind it. As they announced on their own website (www.stressdriven.com) review comments ranged from “mediocre or poor” to “[…] provocative, potentially revolutionary (if correct) analysis”. It surely contains interesting thoughts. – ...[Read More]
Attending a conference is not cheap, even if you’ve been lucky enough to secure some funds to help with travel, accommodation and/or registration costs. However, with a little insider knowledge from those who’ve attended the General Assembly many times before, it is possible to have a (scientifically) rewarding week in Vienna, without breaking the bank. Before you get there A sure way to save a fe ...[Read More]
