GeoLog

Hydrological Sciences

Imaggeo on Mondays: The place where water runs through rocks

July 13, 2015
Imaggeo on Mondays: The place where water runs through rocks
Waved rocks of Antelope slot canyon. Credit: Frederik Tack (distributed via imaggeo.egu.eu)

Antelope Canyon, located in Arizona, USA, was formed by erosion of the Navajo Sandstone, primarily due to flash flooding and secondarily due to other sub-aerial processes (think of physical weathering processes such as freeze-thaw weathering exfoliation and salt crystallisation). Rainwater runs into the extensive basin above the slot canyon sections, picking up speed and sand as it rushes into the ...[Read More]

Imaggeo on Mondays: Seeing the world through a pothole

June 8, 2015
Imaggeo on Mondays: Seeing the world through a pothole
The world seen through a pothole. Credit: Mira Tammelin (distributed via imaggeo.egu.eu )

A beautiful image of a forest reflected in a pool of water within a pothole in southern Finland is this Monday’s Imaggeo image and it brought to you by Mira Tammelin, a Finish researcher. The photo illustrates a pothole in the Askola pothole area in southern Finland. The pothole area is situated on the steep slopes next to river Porvoonjoki, approximately 70 kilometers to the northeast from ...[Read More]

Geosciences Column: Recent and future changes in the Greenland Ice Sheet

June 5, 2015
Geosciences Column: Recent and future changes in the Greenland Ice Sheet
Greenland ice sheet. Credit: Andrew Sole (distributed via imaggeo.egu.eu )

Over the past few decades, the Arctic region has warmed more than any other on Earth. The Greenland Ice Sheet is losing mass faster than ever before, and is expected to keep melting with consequences for global sea-level rise and ocean circulation. At a media briefing, during the EGU’s General Assembly in April (stream it here), researchers presented new results on the factors that influence the G ...[Read More]

Imaggeo on Mondays: Foehn clouds

May 11, 2015

This week’s post is brought to you by Stefan Winkler, a Senior Lecturer in Quaternary Geology & Palaeoclimatology, who explains how the mountain tops of the Southern Alps become decorated by beautiful blanket-like cloud formations. The Sothern Alps of New Zealand are a geoscientifically dynamic environment in all aspects. They are arguably one of the youngest high mountain ranges in the ...[Read More]