Arsia Mons on Mars: volcanic eruption detected by ESA Mars Express!

[Arken]

Good day to you all friends. 
After a long time here I am again to submit to your attention and you precious skills some awesome images from Arsia Mons on Mars.
An incredible and still misterious phenomenon occurred on Arsia Mons till 16 september 2018 and is ongoing right now: Arsia Mons erupted? The sleeping volcano awakening?

https://www.flickr.com/photos/esa_marswebcam/44866153135/?fbclid=IwAR0ksnnSMRBInXTQaNFMjLNwzGSUQ7DKClDKtbv6iZvE-ndve5T2ZKYjkLc

You can admire this beautiful plume as it emerge from the Arsia Mons caldera, with its own shadow.

The Mars Webcam takes up this beautiful images of the plume that comes out of Arsia Mons, extending over 2000 km to the west!

The phenomenon began on 16-17 September; we are therefore at almost 2 months  in duration! So, it is not an orographic cloud.

To admins: I forgot how load images on   

[ArMaP]

Nice to "see" you again.

That cloud has appeared in other years, it appears at this time of the Martian year.

Here's ESA's explanation.

[Arken]

Hello, Armap nice to see you, friend 

I read the ESA explanation but this phenomenon goes from 16 september when detected for the first time. Orographic clouds do not act like this one, and for so long time.

Another intriguing anomaly is : why this plume/cloud came out only from Arsia Mons during these years? And why NASA probes DO NOT detected this event in these days?
ESA lies? NASA lies?
This is my biggest doubt!

However, I saw orographic clouds on Mars, always circular, and present at the same time on all 4 large volcanoes in Tharsis region, but now is only on Arsia Mons, mostly elongated (more than 2000 Km.)

This is a "geological" phenomenon, not "atmospheric".
When I say "eruption" I mean "out-gassing" not lava flow. Out-gassing from Arsia Mons is real, seasonal. Something unusual is going on from the inner of the planet...

[ArMaP]

I read the ESA explanation but this phenomenon goes from 16 september when detected for the first time.

This year.

Orographic clouds do not act like this one, and for so long time.

It depends on the conditions that create them, if the conditions last longer then the clouds will last longer.

Another intriguing anomaly is : why this plume/cloud came out only from Arsia Mons during these years?

I don't understand your question, are you asking why the cloud comes only from Arsia Mons or why only these years or both?

And why NASA probes DO NOT detected this event in these days?

They did, as you can see on this page, although not as noticeable as on ESA's images.

Here are other photos from previous years.
http://www.planetary.org/multimedia/space-images/mars/arsia-mons-and-cloud-mars.html
https://www.msss.com/mars_images/moc/2005/09/07/

ESA lies? NASA lies?
This is my biggest doubt!

Why would they lie about that?

When I say "eruption" I mean "out-gassing" not lava flow.

I understood it.

[Arken]

This year.
It depends on the conditions that create them, if the conditions last longer then the clouds will last longer.
I don't understand your question, are you asking why the cloud comes only from Arsia Mons or why only these years or both?
They did, as you can see on this page, although not as noticeable as on ESA's images.

Here are other photos from previous years.
http://www.planetary.org/multimedia/space-images/mars/arsia-mons-and-cloud-mars.html
https://www.msss.com/mars_images/moc/2005/09/07/
Why would they lie about that?
I understood it.

I know this isn't the first time of this plume from Arsia Mons it happened already in past years and always with the "same" explanation.  But previously no one huge, in time and length, like this. This mean that the plume is consistent and persistent. This "plume" (out-gassing) came only from Arsia and not from other volcanoes.

ESA researchers said it was water vapor crystallized.  But, a long cloud of more than 2000 km of water vapor means that ALL the water on Mars is concentrated in that plume...

NASA probe, in these days, shows only a circular cloud on Arsia and not a long plume like in ESA image that casts its own shadow.  ESA add this "plume" or NASA hide this plume? 

[ArMaP]

I know this isn't the first time of this plume from Arsia Mons it happened already in past years and always with the "same" explanation.  But previously no one huge, in time and length, like this. This mean that the plume is consistent and persistent. This "plume" (out-gassing) came only from Arsia and not from other volcanoes.

Thanks, I understand now what you mean.

ESA researchers said it was water vapor crystallized.  But, a long cloud of more than 2000 km of water vapor means that ALL the water on Mars is concentrated in that plume...

A thin cloud like that doesn't take much water, and water ice is much brighter than water droplets and ice crystals are bigger than they were in water, so it results in more visible clouds.

NASA probe, in these days, shows only a circular cloud on Arsia and not a long plume like in ESA image that casts its own shadow.  ESA add this "plume" or NASA hide this plume? 

The images are from different days, and a cloud, regardless of its source, is not a fixed feature, so it's natural that it changes shape and size according to the winds.

ESA's images from October 30 show a cloud with a different shape.

https://www.flickr.com/photos/esa_marswebcam/45584800332/in/photostream/

[Arken]

[quote/]A thin cloud like that doesn't take much water, and water ice is much brighter than water droplets and ice crystals are bigger than they were in water, so it results in more visible clouds.
The images are from different days, and a cloud, regardless of its source, is not a fixed feature, so it's natural that it changes shape and size according to the winds.

ESA's images from October 30 show a cloud with a different shape.

https://www.flickr.com/photos/esa_marswebcam/45584800332/in/photostream/
[/quote]

No, Armap. Not different  shape. At all.  The shape of that plume, in ESA images, is always the same. The long plume (2000 km.) always is still there. In the image you posted above change only the perspective light-darkness of Mars and the long plume goes in the darkness.

[ArMaP]

No, Armap. Not different  shape. At all.  The shape of that plume, in ESA images, is always the same. The long plume (2000 km.) always is still there. In the image you posted above change only the perspective light-darkness of Mars and the long plume goes in the darkness.

So, to you, these two images show the same shape?

[Arken]

So, to you, these two images show the same shape?

Yes, Armap. YES.    The darkness is near Arsia Mons in second image. Different . Didn't notice it? 

[ArMaP]

Yes, Armap. YES.    The darkness is near Arsia Mons in second image. Different . Didn't notice it? 

I was talking about the shape, not about the darkness.

[Arken]

I was talking about the shape, not about the darkness.

What do you mean exactly Armap?

The shape of the plume (in your second image) is the same,  and the darkness obscure it.

[ArMaP]

I'm talking about this:



The initial part of the plume on that photo, from the same day as NASA's photo, is round, while on the other days it was not, the beginning of the cloud was as thin and straight as the rest.

[Arken]

The out-gassing is huge. The plume is huge. The event, in time and length, is huge.
this is not an orographic cloud. Orographic clouds are totally different in shape, formations and time. http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cld/cldtyp/oth/org.rxml

[Arken]

After two months the long plume from Arsia is still there and is thick!

https://www.flickr.com/photos/esa_marswebcam/45864628611/in/photostream/