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Hot magma is melting Greenland ice – can windfarms save it?

Posted By Joanne Nova On April 7, 2016 @ 3:44 pm In Global Warming | Comments Disabled

Greenland, magma, hot rocks, melting ice, geothermal heat, 2016.

Here on the ball of magma called Earth, there’s a hot plume of rocks under Iceland that stretches right across under Greenland. Those hot rocks are melting the ice from below in a band 1,200 km long and 400 km wide.[1]

I don’t think solar panels are going to stop Greenland melting.

The main part of the plume has been progressing eastward over the last 120 million years, right under Greenland and now lies under Iceland.

Will the media take a million years to catch on?

Presumably, being world class journalists, from now on all ABC/BBC/CBC stories will not mention melting Greenland ice-sheets without also noting that geothermal heat may be causing it instead of your long hot showers.

But a similar study published in Nature Geoscience 3 years ago was the forerunner to this one with similar conclusions and the mainstream media don’t seem to have noticed yet.[2]  No mention of magma, tectonics and hot rocks here: ABC — Antarctica’s melting ice alone could lift sea levels one metre by 2100, March 31st, 2016. Or here: ABC — Global warming melts last stable edge of Greenland’s Zachariae ice stream, March 17th, 2014. Or on the BBC – Ice sheet losses double, 2014. Or here — ABC: Antarctic ice shelf collapse “very likely”. October 2015.

There’s a hot blob under West Antarctica too

Likewise, soon the public broadcasters will let listeners know that West Antarctica lies over the southern edge of the Pacific Rim, and “might” have some geothermal heat from below too because there is giant blob of superheated rock there too. [3]

Abstract

Iceland, Greenland, 2016, hot plume, map.

The plume slowly sliding under Greenland then Iceland.

REFERENCES

[1^]  A. G. Petrunin, I. Rogozhina,  A. P. M. Vaughan, I. T. Kukkonen, M. K. Kaban,    I. Koulakov & M. Thomas (2013) Heat flux variations beneath central Greenland’s ice due to anomalously thin lithosphere. Nature Geoscience 6, 746–750 (2013) doi:10.1038/ngeo1898

[2^]  Irina Rogozhina, Alexey G. Petrunin, Alan P. M. Vaughan, Bernhard Steinberger, Jesse V. Johnson, Mikhail K. Kaban, Reinhard Calov, Florian Rickers, Maik Thomas & Ivan Koulakov Melting at the base of the Greenland ice sheet explained by Iceland hotspot history(2016) Nature Geoscience, Letter, doi:10.1038/ngeo2689

[3^]  Lloyd et al (2015) A seismic transect across West Antarctica: Evidence for mantle thermal anomalies beneath the Bentley Subglacial Trench and the Marie Byrd Land Dome. Journal of Geophysical Research: Solid Earth, 2015; DOI: 10.1002/2015JB012455

 

 

 

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