EGU Blogs

5516 search results for "6"

Geology for Global Development

Guest Blog: Anthropogenic climate change – what does this mean for groundwater resources in Africa?

November 28, 2017
Guest Blog: Anthropogenic climate change – what does this mean for groundwater resources in Africa?

On the 25th October, Laura Hunt (Cardiff University) attended the joint meeting of the International Association of Hydrogeologists (IAH) and the Hydrogeological Group of the Geological Society, which included the Ineson Lecture at the Geological Society of London.  It is a common misconception that Africa is an entirely dry, arid continent, parched for water. A resource that we in the UK take alm ...[Read More]

GeoLog

Imaggeo on Mondays: Angular unconformity

November 27, 2017
Imaggeo on Mondays: Angular unconformity

It is not unusual to observe abrupt contacts between two, seemingly, contiguous rock layers, such as the one featured in today’s featured image. This type of contact is called an unconformity and marks two very distinct times periods, where the rocks formed under very different conditions. Telheiro Beach is located at the western tip of the Algarve; Portugal’s southernmost mainland region and the ...[Read More]

CL
Climate: Past, Present & Future

Forams, the sea thermometers of the past!

November 24, 2017
Forams, the sea thermometers of the past!

Name of proxy Mg/Ca-SST on planktonic foraminifera shell Type of record Sea Surface Temperature (SST) Paleoenvironment Marine environments Period of time investigated 55 Million years ago to recent times How does it work ? Foraminifera (or Forams) are single-celled organisms varying from less than 1 mm to several cm in size. They are very abundant in the ocean floor (benthic species) or floating a ...[Read More]

CR
Cryospheric Sciences

Image of the Week – Does size really matter? A story of ice floes and power laws

November 24, 2017
Image of the Week – Does size really matter? A story of ice floes and power laws

The retreating Arctic sea ice is one of the most well-known facets of Climate Change. Images of polar bears desperately swimming through polar seas searching for somewhere to rest and feed resonate strongly with the public. Beyond these headlines however, the Arctic Ocean is displaying a rapid transition from having mostly permanent ice cover to a more seasonal cover. The Marginal Ice Zone As both ...[Read More]

GD
Geodynamics

Alaska: a gold rush of along strike variations

November 22, 2017
Alaska: a gold rush of along strike variations

Every 8 weeks we turn our attention to a Remarkable Region that deserves a spot in the scientific limelight. After exploring the Mediterranean and the ancient Tethys realm, we now move further north and across the Pacific to the Aleutian-Alaska subduction zone. This post was contributed by Kirstie Haynie who is a PhD candidate at the department of geology at the University at Buffalo, State Univer ...[Read More]

GeoLog

Imaggeo on Mondays: A spectacular view of moss-covered rocks

November 20, 2017
Imaggeo on Mondays: A spectacular view of moss-covered rocks

Geology has shaped the rugged landscape of the Isle of Skye – the largest island of Scotland’s Inner Hebrides archipelago. From the very old Precambrian rocks (approximately 2.8 billion years old) in the south of the island, through to the mighty glaciers which covered much of Scotland as recently as 14,700 years ago, the modestly-sized island provides a snap-shot through Earth’s dynamic his ...[Read More]

SM
Seismology

Crowdsourcing in Europe: how to share macroseismic data of felt earthquakes ?

November 20, 2017
Crowdsourcing in Europe: how to share macroseismic data of felt earthquakes ?

“Did you feel the earthquake ?”     “Avez-vous ressenti un tremblement de Terre?”      “Erdbeben gespürt?”          ” Følte du siste jordskjelv?”            “Sentiu um Sismo?” “Ha sentido algún terremoto?”      “Pocítili ste zemetrasenie?”      “Hai Sentito il Terremoto?” “почувствахте ли земетрес ...[Read More]

GeoLog

GeoPolicy: COP23 – key updates and outcomes

November 17, 2017
GeoPolicy: COP23 – key updates and outcomes

What is COP23? Anthropogenic climate change is threatening life on this planet as we know it. It’s a global issue… and not one that is easily solved. The Conference of the Parties (COP) provides world leaders, policy workers, scientists and industry leaders with the space to share ideas and decide on how to tackle climate change and generate global transformative change. COP23 will predominantly f ...[Read More]

WaterUnderground

Bedrock: A hydrogeologist’s devotional

17th November 2017
Bedrock: A hydrogeologist’s devotional

Post by Kevin Befus, Assistant Professor at the College of Engineering and Applied Science at the University of Wyoming, in the United States. _______________________________________________ I want to share a book with you that has encouraged me through initial academic mires (I was only in graduate school for 7 years…) and inspired me to expand my perception and appreciation of the natural world. ...[Read More]