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    Home»Technology»Icelandic scientist plan to drill down to magma
    Technology

    Icelandic scientist plan to drill down to magma

    Team_AIBS NewsBy Team_AIBS NewsDecember 22, 2024No Comments6 Mins Read
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    Getty Images Lava spews from multiple craters of the Sundhnúkur volcano on June 3, 2024 on the Reykjanes peninsula near Grindavik, Iceland. Getty Photos

    Iceland is likely one of the world’s most volcanically lively locations

    I am in one of many world’s volcanic hotspots, northeast Iceland, close to the Krafla volcano.

    A brief distance away I can see the rim of the volcano’s crater lake, whereas to the south steam vents and dirt swimming pools bubble away.

    Krafla has erupted round 30 instances within the final 1,000 years, and most just lately within the mid-Nineteen Eighties.

    Bjorn Guðmundsson leads me to a grassy hillside. He’s operating a staff of worldwide scientists who plan to drill into Krafla’s magma.

    “We’re standing on the spot the place we’re going to drill,” he says.

    The Krafla Magma Testbed (KMT) intends to advance the understanding of how magma, or molten rock, behaves underground.

    That data may assist scientists forecast the chance of eruptions and push geothermal power to new frontiers, by tapping into an especially scorching and doubtlessly limitless supply of volcano energy.

    Bjorn Por Guðmundsson speaks to Adrienne Murray with the rim of the Krafla volcano in the distance

    Bjorn Por Guðmundsson leads a staff planning to drill right down to magma below this spot

    Beginning in 2027 the KMT staff will start drilling the primary of two boreholes to create a novel underground magma observatory, round 2.1km (1.3 miles) below the bottom.

    “It is like our moonshot. It should remodel quite a lot of issues,” says Yan Lavallée, a professor of magmatic petrology and volcanology on the Ludwigs-Maximillian College in Munich, and who heads KMT’s science committee.

    Volcanic exercise is often monitored by instruments like seismometers. However not like lava on the floor, we don’t know very a lot concerning the magma beneath floor, explains Prof Lavallée.

    “We would prefer to instrument the magma so we are able to actually take heed to the heart beat of the earth,” he provides.

    Stress and temperature sensors can be positioned into the molten rock. “These are the 2 key parameters we have to probe, to have the ability to inform forward of time what’s taking place to the magma,” he says.

    All over the world an estimated 800 million folks reside inside 100km of hazardous lively volcanoes. The researchers hope their work might help save lives and cash.

    Iceland has 33 lively volcano techniques, and sits on the rift the place the Eurasian and North American tectonic plates pull aside.

    Most just lately, a wave of eight eruptions in the Reykanes peninsula has broken infrastructure and upended lives locally of Grindavik.

    Mr Guðmundsson additionally factors to Eyjafjallajökull, which caused havoc in 2010 when an ash cloud brought about over 100,000 flight cancellations, costing £3bn ($3.95bn).

    “If we’d been higher in a position to predict that eruption, it may have saved some huge cash,” he says.

    Steam rises from pools with snow-capped volcanos in the distance, in northeast in Iceland

    Krafla is surrounded by steaming ponds and dirt swimming pools

    KMT’s second borehole will develop a test-bed for a brand new technology of geothermal energy stations, which exploit magma’s excessive temperature.

    “Magma are extraordinarily energetic. They’re the warmth supply that energy the hydrothermal techniques that results in geothermal power. Why not go to the supply?” asks Prof Lavallée.

    Some 25% of Iceland’s electrical energy and 85% of family heating, comes from geothermal sources, which faucet scorching fluids deep underground, making steam to drive generators and generate electrical energy.

    Within the valley beneath, the Krafla energy plant provides scorching water and electrical energy to about 30,000 houses.

    “The plan is to drill simply wanting the magma itself, presumably poke it somewhat bit,” says Bjarni Pálsson with a wry smile.

    “The geothermal useful resource is situated simply above the magma physique, and we imagine that’s round 500-600C,” says Mr Pálsson, the manager director of geothermal improvement at nationwide energy supplier, Landsvirkjun.

    Magma could be very laborious to find underground, however in 2009 Icelandic engineers made an opportunity discovery.

    That they had deliberate to make a 4.5km deep borehole and extract extraordinarily scorching fluids, however the drill abruptly stopped because it intercepted surprisingly shallow magma.

    “We have been completely not anticipating to hit magma at solely 2.1km depth,” says Mr Pálsson.

    Encountering magma is uncommon and has solely occurred right here, Kenya and Hawaii.

    Superheated steam measuring a recording-breaking 452°C shot up, whereas the chamber was an estimated 900°C.

    Dramatic video exhibits billowing smoke and steam. Acute warmth and corrosion finally destroyed the effectively.

    “This effectively produced about 10 instances extra [energy] than the typical effectively on this location,” says Mr Pálsson.

    Simply two of those may provide the identical power as the facility plant’s 22 wells, he notes. “There’s an apparent recreation changer.”

    Steel pipes zig-zag across the Icelandic landscape connecting red pods of a geothermal power station

    There’s a large demand for geothermal energy

    Greater than 600 geothermal energy vegetation are discovered worldwide, and tons of extra are deliberate, amid rising demand for round the clock low carbon power. These wells are sometimes round 2.5km deep, and deal with temperatures beneath 350°C.

    Non-public corporations and analysis groups in a number of nations are additionally working in direction of extra superior and ultra-deep geothermal, known as super-hot rock, the place temperatures exceed 400°C at depths of 5 to 15km.

    Reaching deeper and far hotter, warmth reserves is the “Holy Grail”, says Rosalind Archer, the dean of Griffith College, and former director of the Geothermal Institute in New Zealand.

    It’s the upper power density that’s so promising, she explains, as every borehole can produce 5 to 10 instances extra energy than customary geothermal wells.

    “You’ve got acquired New Zealand, Japan and Mexico all wanting, however KMT is the closest one to getting drill bit within the floor,” she says. “It is not simple and it isn’t essentially low-cost to get began.”

    Snow and ice covers the crater lake at Krafla volcano

    Engineers must develop new drilling tech to work round volcanos

    Drilling into this excessive surroundings can be technically difficult, and requires particular supplies.

    Prof Lavallée is assured it’s attainable. Excessive temperatures are additionally present in jet engines, metallurgy and the nuclear business, he says.

    “We’ve got to discover new supplies and extra corrosion resistant alloys,” says Sigrun Nanna Karlsdottir, a professor of business and mechanical engineering on the College of Iceland.

    Inside a lab, her staff of researchers are testing supplies to resist excessive warmth, stress and corrosive gases. Geothermal wells are often constructed with carbon metal, she explains, however that rapidly loses energy when temperatures exceed 200°C.

    “We’re specializing in excessive grade nickel alloys and likewise titanium alloys,” she says.

    Drilling into volcanic magma sounds doubtlessly dangerous, however Mr Guðmundsson thinks in any other case.

    “We don’t imagine that sticking a needle into an enormous magma chamber goes to create an explosive impact,” he asserts.

    “This occurred in 2009, they usually discovered that they’d in all probability executed this earlier than with out even figuring out it. We imagine it’s secure.”

    Different dangers additionally should be thought of when drilling into the earth like poisonous gases and inflicting earthquakes, says Prof Archer. “However the geological surroundings in Iceland makes that most unlikely.”

    The work will take years, however may convey superior forecasting and supercharged volcano energy.

    “I feel the entire geothermal world are watching the KMT challenge,” says Prof Archer. “It’s doubtlessly fairly transformative.”

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