Showing posts with label Iceland. Show all posts
Showing posts with label Iceland. Show all posts
Friday, January 5
Magma Tunnel to Unleash Unlimited Power
ICELAND is one of the most boring countries in the world. That is meant as a compliment, not an insult. The island nation is dotted with thousands of boreholes drilled deep into the rock to extract geothermal energy. They will soon be joined by another, which will be anything but boring. “We are going to drill into a magma chamber,” says Hjalti Páll Ingólfsson at the Geothermal Research Cluster (GEORG) in Reykjavík. “It’s the first journey to the centre of the Earth,” says his colleague Björn Þór Guðmundsson.
Well, not quite the centre. Some magma chambers – underground reservoirs of molten rock – lie just a few kilometres below Earth’s surface, putting them within reach of modern drills. They occasionally leak magma to the surface, where it spews out as lava. That is exactly what was starting to happen, to spectacular and devastating effect, around the town of Grindavík in southern Iceland, as this story went to press. The trouble is, we don’t normally know where magma chambers lie. “No geophysical technique has been shown to satisfactorily locate magma reservoirs,” says John Eichelberger at the University of Alaska Fairbanks. READ MORE...
Tuesday, November 2
Northern Lights
Iceland and Norway may dazzle with northern-lights displays, but you don’t have to go abroad to enjoy a night beneath auroras. These kaleidoscopic swirls dance above the U.S.’s northernmost states—and we’re not just talking about northern-lights hunting in Alaska.
If and when the conditions are right, you can catch auroras in most northern-border states such as Maine or Montana. And catching the lights here isn’t merely a pipe dream: In early October 2021, northern lights painted the skies from New Hampshire to Glacier National Park. One month before that, aurora hunters caught them in North Dakota. And they danced as low as Muskegon, Michigan, in the spring.
Aurora experts say there’s more where that came from. The sun sparks northern lights during solar storms, when it emits charged particles that collide with Earth’s atmosphere, creating the glowing green, purple, and even red displays that top travelers’ bucket lists. In December 2019, the sun entered a new cycle of solar activity—and this transition bodes well for those eager to spot auroras.
“The solar cycle is associated with an increase in solar activity,” says Mike Shaw, an astrophotographer and co-founder of the annual Aurora Summit. Each solar cycle is roughly 11 years long; the mid-point, roughly five years in, is the peak of northern-lights activity, known as solar maximum. “A new cycle correspondingly increases aurora activity, so the next several years will be much better than the last several years,” Shaw says.
How (and where) to find U.S. northern lights
Whether it’s Norway or North Dakota, the same aurora-hunting guidelines apply: Look for a place with dark, clear skies and minimal obstructions to the north, where auroras appear. And unlike high-latitude locales like Iceland, the lower 48 enjoys nighttime darkness all year—that means aurora sightings can happen year-round. READ MORE...
Tuesday, October 5
Undoing Carbon Emissions
Carbon emissions are causing climate change – so rather than sending carbon dioxide into the sky, in Iceland, some are turning it into stone.
The two red-and-white silos of the aluminium smelter at Straumsvík are conspicuous from afar to everyone travelling from Iceland’s international airport to the capital city, Reykjavík. These silos house a mineral called alumina, the raw material used to produce aluminium.
The alumina makes its way via an automated system to potrooms – three grey, long, low-lying buildings – where the manufacture of aluminium happens. These potrooms are perhaps less noticeable than the towers, yet they are playing a crucial role in reducing Iceland’s carbon emissions.
Heavy industry in Iceland contributes 48% of the country’s carbon dioxide (CO2) emissions, according to the Environment Agency of Iceland, excluding greenhouse gases from land use and forestry.
Heavy industry in Iceland contributes 48% of the country’s carbon dioxide (CO2) emissions, according to the Environment Agency of Iceland, excluding greenhouse gases from land use and forestry.
Even though these industrial facilities run on renewable energy from hydroelectricity and geothermal power, CO2 is released as part of the process of producing metals like aluminium.
The larger of the country’s industrial facilities produces silicon metals, which are used in steel manufacturing, as well as aluminium, much of which is exported and used in the automobile industry.
At present, three aluminium smelters, two manufacturing plants and the energy company Reykjavik Energy are investigating becoming carbon neutral by 2040. Together, the facilities release about 1.76 million tonnes of CO2 each year.
At present, three aluminium smelters, two manufacturing plants and the energy company Reykjavik Energy are investigating becoming carbon neutral by 2040. Together, the facilities release about 1.76 million tonnes of CO2 each year.
Getting from that figure to zero might seem like a tall order, especially when much of Iceland’s heavy industry already runs on renewables. TO READ MORE, CLICK HERE...
Tuesday, September 28
World's Biggest Carbon Removal Plant
The world’s largest plant designed to suck carbon dioxide out of the air and turn it into rock has started running in Iceland, the companies behind the project – Switzerland’s Climeworks and Iceland’s Carbfix – said on Wednesday.
The plant, named Orca after the Icelandic word “orka” meaning “energy”, consists of four units, each made up of two metal boxes that look like shipping containers.
Constructed by Climeworks, when operating at capacity the plant will draw 4,000 tonnes of carbon dioxide out of the air every year, the companies say.
According to the US Environmental Protection Agency, that equates to the emissions from about 870 cars. The plant cost between US$10 and 15m to build, Bloomberg reported.
To collect the carbon dioxide, the plant uses fans to draw air into a collector, which has a filter material inside. Once the filter material is filled with CO2, the collector is closed and the temperature is raised to release the CO2 from the material, after which the highly concentrated gas can be collected.
Then, Carbfix’s process mixes the CO2 with water and injects it at a depth of 1,000 metres into the nearby basalt rock where it is mineralised. Carbfix says the CO2-water mixture turns to stone in about two years, and hydride of sulphur (HS2), within four months. READ MORE
The plant, named Orca after the Icelandic word “orka” meaning “energy”, consists of four units, each made up of two metal boxes that look like shipping containers.
Constructed by Climeworks, when operating at capacity the plant will draw 4,000 tonnes of carbon dioxide out of the air every year, the companies say.
According to the US Environmental Protection Agency, that equates to the emissions from about 870 cars. The plant cost between US$10 and 15m to build, Bloomberg reported.
To collect the carbon dioxide, the plant uses fans to draw air into a collector, which has a filter material inside. Once the filter material is filled with CO2, the collector is closed and the temperature is raised to release the CO2 from the material, after which the highly concentrated gas can be collected.
Then, Carbfix’s process mixes the CO2 with water and injects it at a depth of 1,000 metres into the nearby basalt rock where it is mineralised. Carbfix says the CO2-water mixture turns to stone in about two years, and hydride of sulphur (HS2), within four months. READ MORE
Monday, August 2
Surviving A Global Collapse of Society
New Zealand, Iceland, the UK, Tasmania and Ireland are the places best suited to survive a global collapse of society, according to a study.
The researchers said human civilisation was “in a perilous state” due to the highly interconnected and energy-intensive society that had developed and the environmental damage this had caused.
A collapse could arise from shocks, such as a severe financial crisis, the impacts of the climate crisis, destruction of nature, an even worse pandemic than Covid-19 or a combination of these, the scientists said.
To assess which nations would be most resilient to such a collapse, countries were ranked according to their ability to grow food for their population, protect their borders from unwanted mass migration, and maintain an electrical grid and some manufacturing ability. Islands in temperate regions and mostly with low population densities came out on top.
The researchers said their study highlighted the factors that nations must improve to increase resilience. They said that a globalised society that prized economic efficiency damaged resilience, and that spare capacity needed to exist in food and other vital sectors.
Billionaires have been reported to be buying land for bunkers in New Zealand in preparation for an apocalypse. “We weren’t surprised New Zealand was on our list,” said Prof Aled Jones, at the Global Sustainability Institute, at Anglia Ruskin University, in the UK.
Jones added: “We chose that you had to be able to protect borders and places had to be temperate. So with hindsight it’s quite obvious that large islands with complex societies on them already [make up the list]. READ MORE
The researchers said human civilisation was “in a perilous state” due to the highly interconnected and energy-intensive society that had developed and the environmental damage this had caused.
A collapse could arise from shocks, such as a severe financial crisis, the impacts of the climate crisis, destruction of nature, an even worse pandemic than Covid-19 or a combination of these, the scientists said.
To assess which nations would be most resilient to such a collapse, countries were ranked according to their ability to grow food for their population, protect their borders from unwanted mass migration, and maintain an electrical grid and some manufacturing ability. Islands in temperate regions and mostly with low population densities came out on top.
The researchers said their study highlighted the factors that nations must improve to increase resilience. They said that a globalised society that prized economic efficiency damaged resilience, and that spare capacity needed to exist in food and other vital sectors.
Billionaires have been reported to be buying land for bunkers in New Zealand in preparation for an apocalypse. “We weren’t surprised New Zealand was on our list,” said Prof Aled Jones, at the Global Sustainability Institute, at Anglia Ruskin University, in the UK.
Jones added: “We chose that you had to be able to protect borders and places had to be temperate. So with hindsight it’s quite obvious that large islands with complex societies on them already [make up the list]. READ MORE
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