GeoLog

NASA’s Juno mission reveals Jupiter’s magnetic field greatly differs from Earth’s

Keri McNamara July 18, 2018

The Juno probe flew 2.8 billion kilometres between its launch from earth and insertion into orbit around Jupiter. Image: NASA/JPL-Caltech

NASA scientists have revealed surprising new information about Jupiter’s magnetic field from data gathered by their space probe, Juno. Unlike earth’s magnetic field, which is symmetrical in the North and South Poles, Jupiter’s magnetic field has startlingly different magnetic signatures at the two poles. The information has been collected as part of the Juno program, NASA’s latest mission to unrav ...[Read More]

Imaggeo on Mondays: Corno Grande, tallest peak of the Apennines

Olivia Trani July 16, 2018

Corno Grande (Big Horn) - Gran Sasso, Italy. Credit: Alessandro Righetti (distributed via imaggeo.egu.eu)

In the middle of the Apennines lays the Gran Sasso d’Italia mountain chain, a picturesque collection of mountains situated in the heart of Italy. Featured here is one of the chain’s peaks, called the Corno Grande, meaning ‘Big Horn,’ coloured with a faint reddish light of a late-winter sunset. Sitting at 2,912 metres, this summit is easily the highest mountain in the Apennines. The areas sur ...[Read More]

Geosciences Column: The best spots to hunt for ancient ice cores

Olivia Trani July 13, 2018

The shore of Livingston Island from the South Shetland Islands in Antarctica. Photo: Antarctic public transport. Credit: Carsten W. Mueller (distributed via imaggeo.egu.eu)

Where in the world can you find some of Earth’s oldest ice? That is the question a team of French and US scientists aimed to answer. They recently identified spots in East Antarctica that likely have the right conditions to harbor ice that formed 1.5 million years ago. Scientists hope that obtaining and analysing an undisturbed sample of ice this old will give them clues about Earth’s ancient clim ...[Read More]

Imaggeo on Mondays: Namibia’s mysterious fairy circles

Olivia Trani July 9, 2018

The mysterious fairy circles. Credit: Hezi Yizhaq (distributed via imaggeo.egu.eu)

The grassy Namibian desert is pock-marked with millions of circular patches of bare earth just like these shown in the picture between linear dunes. Viewed from a balloon, they make the ground look like a moonscape. Commonly known as fairy circles, the patches range from two to 12 metres across and appear in a 2000 kilometre strip that stretches from Angola to South Africa. For many decades, the f ...[Read More]