Mars News - Page 6

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danajohnson0


Posts: 1195

Reply: 101



PostPosted: February 13, 2019 2:29 PM 

https://www.sciencenews.org/article/nasa-curiosity-mars-rover-weighed-mountain-its-climbing?tgt=nr

The last paragraph gives the interpretation as porosity below the current surface layers, and a rebound with basaltic origin at depth I would presume cause a 'scoria/cinder' type effect, with water present in the true bowl of a crater. Subsequent layering of impact clays from liquefaction might bury the porosity layer. Does my suggestion seem possible to you?

Why the presumption of a massive removal process? The inner rim slopes show large scale semi-fluid patterns at places rather than sedimentary fine layered residuals, a weather changing pattern would fit the suggestion of a post impact lake without infilling, and the erosion of the down flows you displayed come from the upper layers, with a major evacuation vertically in the mid-section of the primary 'mountain'.

The concentration on a massive long lived lake, would be timed after the 'dike swarm' details from regional volcanic sources, and the dikes penetrate the mountain in satellite images. The crater and mountain/cone would have to be much older than the regional volcanic sources.

The surface layers appear not horizontal in bulk.

Vertical small structures match the common vertical erosion removal at larger scale in the layers passed.

Water and basalt interaction during the impact possibly could result in porosity, but the bottom of layers seen by Curiosity show a pitted, removal process is real.
Why would porosity not be a subsurface activity, rather than a dry assembly of porous grains?
Why would the wind altered layering at lower elevation, show any similarity to the upper slopes and the density of the core of the mountain?
Why would a crater cone be a lake deposit in bulk?

danajohnson0


Posts: 1195

Reply: 102



PostPosted: February 16, 2019 5:57 PM 

https://www.researchgate.net/publication/258688201_An_overfilled_lacustrine_system_and_progradational_delta_in_Jezero_crater_Mars_Implications_for_Noachian_climate


Is there convincing evidence that Jezero or Gale features are not impact structures, or are timed at active tectonic margins co-incident with volcanic activity?

Gale mountain, in line with the distant dike swarm structure.
Ref., Gale Crater, Gale Crater 2., and Gale Crater3., in the list.

https://planetcarto.wordpress.com/2016/05/06/exploration-zone-maps-annotated/

The image here is not directly the large 'swarm', just another indication of the pervasive dike pattern on the north-east portion of the Gale crater area.

Gale mountain in the maps is suggested to be volcanic and is nearly as high as Aeolis Mons.

https://www.hou.usra.edu/meetings/lpsc2017/pdf/2411.pdf

2012 assessment of the impact origin of Gale crater and a shallow 0.5 to 1 km thick melt pool, not assessing deep formation of porosity by volcanic activity.

Where is the 'proof' of dust structures filling a crater bowl depth?

danajohnson0


Posts: 1195

Reply: 103



PostPosted: February 17, 2019 4:58 PM 

Reply #102, line 6, the origin of the dike type pattern arises from the north and west, not north-east, and is in line with the 'Gale mountain' feature. The vast altered landscape of the two features, Gale crater and 'Gale mountain shows a mutual interaction with breakdown of the rim and slopes, similar to the lowered elevation of the north-west of Aeolis Mons, known as Mount Sharp.

This is curious new release of earthquake types defined as slow slip events, possibly not detected by a lander such as at INSIGHT on Mars.

http://www.msn.com/en-us/weather/topstories/an-earthquake-lasted-50-days-but-no-one-felt-it-heres-why/ar-BBTtHYK?ocid=ientp

https://en.wikipedia.org/wiki/Tectonics_of_Mars

danajohnson0


Posts: 1195

Reply: 104



PostPosted: February 19, 2019 1:46 PM 

New weather service on Mars by INSIGHT instruments, at this link.

https://www.jpl.nasa.gov/news/news.php?feature=7337

Actual weather link.

https://mars.nasa.gov/insight/weather/

A high of 15 degrees F, and a low of -140 degrees F. Fairly stable lows, variable highs. The late northern winter weather includes a wind speed varying from close to zero each day to a high of 25 to nearly 38 MPH. Hefty wind with a switch in direction on the latest day.
Need the charts to see the wind pattern and temperature changing.

Any estimates about the wind maximum over time?

Good opportunity to study the dust devils.

John Radogno


Posts: 37

Reply: 105



PostPosted: February 21, 2019 2:49 PM 

danajohnson0,
Thanks for all of the links you provided in the above 4 posts. I am going through all of them. Lots of very interesting information, diagrams, images, and abstracts. You put out a lot of questions, we may get the answers sooner rather than later.

Joe Smith


Posts: xxx

Reply: 106



PostPosted: February 24, 2019 10:27 AM 

....what kind of electricity do DD produce?....((note: (GOOGLE LATER))...can this be harvested???....

Joe Smith


Posts: xxx

Reply: 107



PostPosted: February 25, 2019 9:23 AM 

Well,,,,,,, we never reached the boxlike structures on up the mountain.

Dana Johnson


Posts: 1195

Reply: 108



PostPosted: February 25, 2019 7:34 PM 

I have read some guesses from the pre-landing research Joe, but it will now be an opportunity to study the wind and pressure up close, with the temperature variation and spin versus size a study for large and small types. Being in them gives me an understanding that a direct hit at tens of feet diameter is truly an strong effect, whereas the largest I have been in are just barely detectable as wind direction variation to a human perception.
The strongest I experienced, caused me to lean into the wind at about a foot to fifteen inches off the ground at my head facing the wind. It must have been close to 70-85 MPH, at Earth pressures, with stinging debris like sand and sage, needles and other material in the column. At a daily wind on Mars of 25-40 MPH, the desert devils would pass in just seconds and the energy may be straight line differentials or waves.
The energy of a wind energy device from either source might be significant. Where have the Earth wind devices been placed? At stable wind sources and flatlands or shores where the wind is common. We have a large investment in Oklahoma in wind farms.
The types of chemistry and electromechanical differences are a new technology on Mars perhaps.
Haven't tried to look for microcrystals in the MSL images as yet. I've ignored the blog and rover results for too long the past couple years.
It would help us to have available economical DVD collections of the original results rather than the years of pecking and waiting for downloading.
Finding energy sources from the results would help future missions. Going to open a new set of 'hand warmers' now for the evening chill. Hope you are doing well.

Barsoomer


Posts: 344

Reply: 109



PostPosted: March 16, 2019 2:03 AM 

Deposits from an Early Mars Inland Sea

Dana Johnson


Posts: 1195

Reply: 110



PostPosted: March 27, 2019 9:25 PM 

Other releases of claims of river flows over several billion years timing.

https://www.eurekalert.org/pub_releases/2019-03/uoc-rro032519.php

https://www.eurekalert.org/pub_releases/2019-03/aaft-mrf032519.php

Barsoomer


Posts: 344

Reply: 111



PostPosted: March 28, 2019 2:04 AM 

Yes, indeed.

mars-big-rivers-billions-years

Also:
http://advances.sciencemag.org/content/5/3/eaav7710

Barsoomer


Posts: 344

Reply: 112



PostPosted: April 3, 2019 1:18 AM 

looking-for-life-on-mars-viking-experiment-team-member-reflects-on-divisive-findings

Interview with Patricia Straat, co-investigator (with Gil Levin) on the Viking Labeled Release experiment that may have detected life on Mars in 1976.

Dana Johnson


Posts: 1195

Reply: 113



PostPosted: April 3, 2019 4:15 PM 

Isn't it interesting over the years available that there is so little discussion about the 'drainage' channel cut down the Mount Sharp(Gale crater) central mountainside which Curiosity was approaching in the MSL mission?

If the layering and buildup was deposition from the air, the channel would be very old, with so little attendant competing streams, channels, or 'rivers', in other slope sides of the mountain. Was there not a final CRISM or other explanation of mineral content for the channel material? I have seen riverbeds cut down a hundred feet and more vertically along desert 'mud' type deposition, but the mountain on Mars is far taller a structure, and the slope while steep, is not cut vertically downslope, indicating to me it is on firmer layers than mud and layered sand/dirt.

Future missions like Viking may give much more detailed chemistry, and hopefully, multiple sources of confirmation of the content and interactivity of the chemistry results.

John Radogno


Posts: 37

Reply: 114



PostPosted: April 9, 2019 2:19 PM 

Thanks for the Patricia Straat link Dana.

Dana Johnson


Posts: 1195

Reply: 115



PostPosted: April 10, 2019 12:57 PM 

This seemed a interesting example of terrain and dust devil association, just released by the HiRISE catalog. The dust devils not only follow the landform features, but may be a very active part of the erosion scheme once interacting with the presumed ice bearing ground. The severe cold may cause increased association as well as the changes in pressure from the surface topography. Does the sublimation also play in the activity?

https://www.uahirise.org/ESP_059027_1310
Lat. -48.743 Long. 319.298

Easier to see with the overlay of the MIRB browse image colors.

Very shallow channels on the upper platform, and following dust devils issuing from the channels.
Some of the dust devils merge with the channels possibly if the travel is predominately to the upper margin of the images, or, the devils may be issuing from the platform in various directions.
Is this micro-climate control of dust devils, or is there an active erosion process seen here?

danajohnson0


Posts: 1195

Reply: 116



PostPosted: April 10, 2019 1:34 PM 

Another similar example, but far more complex and in the higher elevations of similar latitude position. This example shows not only channel association, but nearly all landforms are influencing and possibly influenced by dust devils and related causation.

https://www.uahirise.org/ESP_059021_1285
Lat. -51.408 Long. 124.246


Dana Johnson


Posts: 1195

Reply: 117



PostPosted: April 10, 2019 10:03 PM 

Barsoomer probably wants credit for that #112 reply about the labeled Viking experiment John, but it is such a routine problem that we read these results 25 or 50 years after, and are still pondering the slow gain of accuracy needed for final interpretation of each observation.
It is such as basic piece of the puzzle. Which chemicals and activity cause which effects?
Finding a chemistry such as Iron Chloride, perchlorates, or any number of other chemicals still doesn't satisfy the functions of the mysteries we create in our minds. Patricia Straat certainly started a world-wide discussion that may take a century to solve. I admire persons who can imagine and solve problems with so little information. The test seems a controlled experiment, but the planet is filled with chemistry we haven't measured in detail.

In regard to these HiRISE images I added, the CO2 gas and frost, water frost, and other aspects such as the polar or non-polar molecular characteristics may bear upon whether the dust devils operate on Mars as on Earth. Do shallow channels have control of direction or initiation of a dust devil? Heated side walls, focused radiation, air pressure, temperature, energy charges, might each have a place in process, even ice accumulation in shaded landforms.
Some images show little correlation with dust devils and minor landforms.

danajohnson0


Posts: 1195

Reply: 118



PostPosted: April 14, 2019 3:00 PM 

Perhaps inappropriate for the topic as too general, but this 'foam' resistant to temperature extremes may someday be incorporated into the Mars and other space devices. Such a well performing material gives a suggestion as to what we might be looking for in extreme environments also.

https://www.sciencenews.org/article/new-graphene-foam-squishy-coldest-temperatures

https://advances.sciencemag.org/content/5/4/eaav2589

danajohnson0


Posts: 1195

Reply: 119



PostPosted: April 20, 2019 1:19 PM 

Ref., my comments at replies 101-103, even 113, this elevation diagram shows that the actual height of Mount Sharp is expected as a product of the variation of the rim elevations whatever the cause, likely to be related to the cause of crater rim elevations.
For this crater to have a central mound, compared with Earths Moon craters seems without a component of air transport for the core of the central peak.
The low density of the measured location would be after the injection of the dike swarm which was subsequently removed by erosion at the current surface. That swarm extended some elevation up the central peak structure.

Source for above from NASA/Goddard, at this link, labeled "Weather report Mars Year 33, month 11"

http://cab.inta-csic.es/rems/en/weather-report-mars-year-33-month-11/

danajohnson0


Posts: 1195

Reply: 120



PostPosted: May 22, 2019 1:46 PM 

If you are planning to be busy in 2020, the NASA offer to take boarding passes early for the 2020 rover is open now. Include your name if it pleases you.

https://www.nasa.gov/press-release/nasa-invites-public-to-submit-names-to-fly-aboard-next-mars-rover

https://mars.nasa.gov/participate/send-your-name/mars2020/

It describes room for one million names, and the list is at 903,000 currently, with only one day active.

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