Thursday, 31 March 2016

How We Tell if a Volcano Is Active, Dormant, or Extinct

The end of December, GNS Science in New Zealand declared that the volcanic unrest at Tongariro that started in 2012 is over.

They lowered the volcanic alert status to Level o (background) and declared that Tongariro was back asleep (even if some steam might persist from the Te Maari vent). So, we can probably consider Tongariro “dormant” again after 3+ years of being an “active” volcano.

It is probably because there are no hard-and-fast definitions for what a volcano is considered active, dormant or extinct.

So, how do we differentiate between active, dormant and extinct volcanoes ???



Geologist Erik Klemetti on this subject >>>>

Monday, 21 March 2016

States and Territories of the US (1789-200)

An incredible timelapse look at how states and territories of the United States of America have changed over the last 200 years


Monday, 14 March 2016

Great East Japan Tsunami 2011

Great East Japan Tsunami 2011 - photo video from ITIC on Vimeo.

African countries are building a “Great Green Wall "

Eleven African countries are moving ahead with an ambitious pan-African effort in the Sahel-Saharan region of the continent to protect arable land from the encroaching Sahara desert—by planting trees.
 
The countries—Djibouti, Eritrea, Ethiopia, Sudan, Chad, Niger, Nigeria, Mali, Burkina Faso, Mauritania, and Senegal—came together in 2007 to execute the $2 billion dollar project to arrest the creeping desertification in the region.
The 15 kilometers (9 miles) wide and 7,775 kilometers (4,831 miles) long tree wall will stretch all the way from Senegal in west Africa to Djibouti in the east.

Read the full article onQuartz Africa >>>

Saturday, 12 March 2016

Yellowstone volcano

Over the past few weeks, the media has made some outlandish claims
about the chances of a massive Yellowstone eruption.
 
 
 
Volcano scientist Erik Klemetti has its own view on the situation. 
 
 Read more >>>>

Why Should Every Squash Have Electricity?

Data visionary Hans Rosling uses seven squashes to show why access to electricity is crucial to end extreme poverty.

Thursday, 10 March 2016

Drought in the Colorado River Basin

Since 2000, the Colorado River Basin (Basin) has been experiencing a historic, extended drought that has impacted regional water supply and other resources, such as hydropower, recreation, and ecologic services. During this time, the Basin has experienced its lowest 16-year period of inflow in over 100 years of record keeping, and reservoir storage in the Colorado River system has declined from nearly full to about half of capacity.

Monday, 7 March 2016

Amsterdam Island

If a volcano erupts in the middle of the ocean, and there is no one within 2,000 miles to see or hear it, can you actually call that volcano active? 

It is hard to know for sure if Amsterdam Island is active or dormant—it has scarcely been studied—but one thing we can say is that it is remote.

 “What is the most remote active volcano on the planet, farthest from people or even farther from any other land mass that people might live?” volcanologist Erik Klemetti asked in a recent blog post. “That prize almost certainly goes to Amsterdam Island in the southern Indian Ocean. Amsterdam Island is staggeringly far from anything:”

Thursday, 3 March 2016

Spectacular Volcanoes

Volcanoes are as dangerous as they are majestic. Over 50 eruptions rock our planet every year. This video helps you understand what causes volcanoes to form and erupt—and shows where they are most likely to be found.

Tuesday, 1 March 2016

After the floods: York and Nijmegen

Rain storms battered northern England in December and it's now the turn of the south-west. But should we be better prepared for the floods that have followed this winter's heavy rain? And what can the UK learn from flood defences in the Netherlands?




Read more >>>