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Frozen glacial eddies on Mars?

Overview map

Frozen glacial eddies on Mars?
Click for full image.

Cool image time! The photo to the right, cropped, reduced, and enhanced to post here, was taken on August 26, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Though the science team labels this image vaguely as showing “Features in Mamers Valles,” the features are likely glacial ice since this location is at the western end of the 2,000-mile-long northern mid-latitude strip I dub glacier country, where glacial features are seen everywhere.

The white dot marks this picture’s location in Mamers Valles, as shown on the overview map above. This particular Martian channel, that meanders in a wildly random manner (including a few sharp ninety degree turns), is theorized [pdf] by some scientists to have formed not by surface flows but by a subterranean drainage that created voids. On the surface the voids caused sagging, collapses, and the eventual formation of the surface channel.

Under such conditions, any ice in the channel would not necessarily have a clear flow direction, thus providing an explanation (though hardly certain) of the eddy-like shape of these features.

Conscious Choice cover

Now available in hardback and paperback as well as ebook!

 

From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

 
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.

 

“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of founder of the Mars Society.

 

All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. The ebook can also be purchased direct from my ebook publisher, ebookit, in which case you don't support the big tech companies and I get a bigger cut much sooner.

 

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One comment

  • Greg the Geologist

    The depressions in the northern part of the full image do look like collapse features. Like many of these, will need boots on the ground to really figure it out.

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