GeoLog

Regular Features

The new EGU blog series on Education: GeoEd

Welcome to GeoEd, the new column on GeoLog dedicated to education in the geosciences! This is a series of posts written by the EGU Educational Fellow, Jane Robb that will cover the new and ongoing education initiatives across the EGU, as well as individual posts under the broad global pedagogical theme of education for sustainable development. GeoEd posts are aimed at formal and informal educators ...[Read More]

Geosciences Column: Climate-impact studies and their importance in a world of climatic uncertainty

A new hydrological climate-impact study by Nina Köplin and colleagues, in the European Geosciences Union journal Hydrology and Earth System Sciences, investigates the impacts of climate change on forest expansion and glacier retreat in Switzerland. This study raises important questions as to whether or not land cover changes should be considered as climate change impacts on hydrological systems, N ...[Read More]

Imaggeo on Mondays: Travertine takeover

This week’s Imaggeo on Mondays is brought to you by Olivier Galland, who took this photo during an incredible outreach adventure in the Andes…  The image displays the spectacular Puente del Inca (The Inca Bridge) hot springs, in the Argentinian Andes of the Mendoza province, along the Vacas River, close to the foot of Cerro Aconcagua. When the mineral-rich, sulphurous waters reach the surface, the ...[Read More]

Imaggeo on Mondays: Eddy covariance

This week’s Imaggeo on Mondays is brought to you by Jean-Daniel Paris, a meteorologist from the Climate and Environmental Sciences Laboratory (LSCE), France. He describes how new techniques like eddy covariance tell us about the flux of greenhouse gas emissions to the atmosphere…  This picture was taken during a visit to the Hyytiälä research station in Finland in June 2010. This station runs flux ...[Read More]

Imaggeo on Mondays: Great faults and faultless geotourism

Road cuttings provide a great window into the wonders of what’s beneath the Earth’s surface. In this week’s Imaggeo on Mondays Bahram Sadry takes us through a beautiful fault between Tabriz and Tehran, Iran… These incredible rock outcroppings along Zanjan-Tabriz highway (the northwest of Iran), are unlike any other outcrop in the world. They are a group of faults and fractures, brecciation and gra ...[Read More]

Imaggeo on Mondays: Surface spirals

This week’s Imaggeo on Mondays is no ordinary image; it’s a snapshot of surface ocean speeds and the extent of ice cover in the North Atlantic. It was produced using a high resolution model of ocean eddies – high resolution here means that details are simplified into grids 3 km across, or one 20th of a degree. Three kilometres may sound like a pretty large area, but in oceanographic modelling, thi ...[Read More]

Geosciences Column: Stitching the seafloor together

You’re standing on a mountain peak, with a fabulous field site before you. Wanting to capture the moment, you take out your iPhone, snap a dozen pictures and your mobile stitches them together beautifully – a nice record to show your colleagues back in the office. Unfortunately, not all field sites are so easy to capture – especially when you need to do a little science with the images. Seafloor p ...[Read More]

Imaggeo on Mondays: Capturing the aurora

The northern lights, or aurora borealis, are created as charged particles interact with the Earth’s atmosphere.  These electrons are part of the solar wind and as they pass through the Earth’s magnetic shield (the magnetosphere); the charged particles collide with those in our atmosphere, emitting light. In the southern hemisphere this phenomenon is known as the aurora australis, but both are caus ...[Read More]

Imaggeo on Mondays: Lime Pancakes

These are the Pancake Rocks of Punakaiki, on the west coast of New Zealand. They are made of limestone that was deposited as calcifying organisms fell to their fate on the sea floor about 30 million years ago. Since then, the limestone has been uplifted, exposed, and eroded by the wind and the sea. Each of the limestone layers are separated by a thin sheet of mudstone in an arrangement known as st ...[Read More]