GeoLog

Arctic

A 12-meter sediment core reveals secrets of the Arctic’s past climate

A 12-meter sediment core reveals secrets of the Arctic’s past climate

Extracted from a depth of 2,500 meters, a giant 12-meter long marine sediment core from the Fram Strait, between Svalbard and Greenland, preserves a climate record spanning up to 400,000 years. Its sediment layers offer crucial insights into the Arctic’s past, helping Dr Jochen Knies and his research team answer two important question: Was the Arctic ever ice-free during past warm periods? W ...[Read More]

Imaggeo On Monday: the EGU Photo Competition – beautiful thin-sections.

Imaggeo On Monday: the EGU Photo Competition – beautiful thin-sections.

In 2010 EGU held our first annual Photo Competition at the General Assembly in Vienna. Since then hundreds of photos have been shared on imaggeo by geoscientists and researchers just like you, with a lucky few being selected each year to be highlighted during the meeting and voted on by our members.   These images can be of anything to do with geology or geoscience – we get many beautif ...[Read More]

Imaggeo On Monday: the EGU Photo Competition – sharing your images around the world.

Imaggeo On Monday: the EGU Photo Competition – sharing your images around the world.

In 2010 EGU held our first annual Photo Competition at the General Assembly in Vienna. Since then hundreds of photos have been shared on imaggeo by geoscientists and researchers just like you, with a lucky few being selected each year to be highlighted during the meeting and voted on by our members.   These images can be of anything to do with geology or geoscience – we get many beautif ...[Read More]

Imaggeo On Monday: Revealing the secrets of the Arctic sky

Imaggeo On Monday: Revealing the secrets of the Arctic sky

When it is dark over Ny Ålesund, Svalbard, a bright green laser beam can be seen quite often, shooting from the AWIPEV Arctic Research Base observatory towards the sky. This beam belongs to “KARLi” the Koldewey Aerosol Raman Lidar, run by the Alfred Wegener Institute for more than 25 years, which contributes to long-term, atmospheric aerosol measurement records.   With this system ...[Read More]

Imaggeo On Monday: Konsfjorden and Kronebreen glacier

Imaggeo On Monday: Konsfjorden and Kronebreen glacier

Taken shortly after our departure from Ny-Ålesund after our first “Lost Meteorites” field trial in Greenland testing new equipment that can be used to discover ‘missing’ iron meteorites in Antarctica, the return flight gave incredible views of the surrounding landscape. This photo was taken looking down to the icy waters of Kongsfjorden on the west coast of Svalbard and the ...[Read More]

Imaggeo On Monday: Under the sea, in the deep, where fire meets water and life emerges III

Imaggeo On Monday: Under the sea, in the deep, where fire meets water and life emerges III

650 metres below the chilly waves of the North Atlantic Arctic Ocean, equidistant between Norway, Iceland and Greenland, are the Jan Mayen Vent Fields. Home to a series of hydrothermal vents strung along a set of normal faults and fissures that run parallel to the seafloor ridge, this is a strange and fascinating place. Hydrothermal vents are places where tectonic activity provides a way for the h ...[Read More]

Imaggeo on Mondays: A walk at the glacier

Imaggeo on Mondays: A walk at the glacier

In 2012 I had the opportunity to help lead a teaching excursion to the Norwegian archipelago Svalbard. On this trip, geography students from the Ruhr-University of Bochum in Germany had the chance to learn more about the nature of this fascinating island. In addition to Svalbard’s climatology and the wildlife, the region’s glaciology and geomorphology were the main topics we focused on. For exampl ...[Read More]

Imaggeo on Mondays: The surprising beauty of the Arctic tundra

Imaggeo on Mondays: The surprising beauty of the Arctic tundra

Close your eyes and try to imagine first thing which comes to your mind, when somebody says “Tundra”. What would you imagine? Being a master student, I imagined cold, flat and a dead field. In fact, Tundra turn out to be completely different, at least in September 2010, when I and my colleagues were lucky to visit it. As it is well known from textbooks no big trees grows in Tundra, how ...[Read More]

Imaggeo on Mondays: Robotics at the service of the polar science

Imaggeo on Mondays: Robotics at the service of the polar science

This picture was taken in the Arctic in May 2018. It shows the unmanned marine vehicle Proteus in front of the tidewater glacier Conwaybreen in the Kongsfjorden in Spitsbergen in the Svalbard Archipelago. The front of tidewater glaciers is an almost vertical wall of ice standing over the sea where direct measurements are very critical due to the possibility of sudden fall of enormous blocks of ice ...[Read More]

Imaggeo on Mondays: Up close and personal with Svalbard glaciers

Imaggeo on Mondays: Up close and personal with Svalbard glaciers

A University Centre in Svalbard (UNIS) Glaciology student examines the calving front of the Paulabreen glacier [in Spitsbergen, Svalbard], taking advantage of sea ice in the Rindersbukta fjord to safely approach the front. Paulabreen is a surge-type glacier, which means that it periodically switches between long periods of slow, stable flow to short-lived periods of very fast flow during which it ...[Read More]