Astronomy:Mars carbonate catastrophe

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Short description: Past event on the planet Mars
Mars in true color, taken by the Emirates Mars Mission on 30 August 2021, when Mars was in northern solstice

Mars' carbonate catastrophe was an event that happened on Mars in its early history. Evidence shows Mars was once warmer and wet about 4 billion years ago, that is about 560 million years after the formation of Mars. Mars quickly, over a 1 to 12 million year time span, lost its water, becoming cold and very dry. Factors in Mars losing its water and most of its atmosphere are: the carbonate catastrophe, loss of the planet's magnetic field and Mars' low gravity. Mars' low gravity and loss of a magnetic field allowed the Sun's solar wind to strip away most of Mars' atmosphere and water into outer space. [1][2][3]

Carbonate catastrophe

Water, H2O, is very abundant the universe, so when Mars formed during the formation of the solar system Mars had water. [4] The water on early Mars reacted with Mars' carbon dioxide. This reaction formed carbonic acid.[5] Carbonic acid became part of the water cycle on Mars.[6] The carbonic acid rain produced carbonates on Mars. The carbonates removed (leached) greenhouse gases, water vapor, and carbon dioxide from Mars' atmosphere. Carbonates on Mars still exists. Mars' early greenhouse gases came from Mars' early magma, planetesimals and comets. The carbonate catastrophe ended the Noachian time span of Mars. Mars' interior cooled, so Mars did not develop plate tectonics and a carbon cycle as Earth did. Thus, Earth did not develop a carbonate catastrophe. Mars' interior cooling also ended volcano activity on Mars. [1][3][7][8]

Magnetic field of Mars

Main page: Astronomy:Magnetic field of Mars

There is evidence that early Mars had a magnetic field, like the magnetic field of Earth. The Magnetic field of Mars ended quickly after the formation of the planet as the core of Mars is made of much lighter elements and is much smaller than Earth's core. [9] Without a magnetic field the Sun's solar wind, made of charged particles, including plasma, electrons, protons and alpha particles stripped away most of the atmosphere and water on Mars. [10][11][12]

Gravity of Mars

Main page: Physics:Gravity of Mars

Mars' gravity is 62.5 % less than Earth, that is 100kg on Earth would be about 38kg on Mars. The low gravity is due to Mars' small size and also its lower density. Mars' mass is only 11% of Earth's mass. Mars' diameter is 4,213 miles (6,780 kilometres) and the diameter of Earth is 7,926 miles (12,756 kilometres). [13][14][15]

Mars today

Further information: Atmosphere of Mars, Climate of Mars, and Martian soil

Mars today is very different than its early history, pre-carbonate catastrophe. Mars today:[16]

  • Mars' atmosphere is 95% carbon dioxide, 3% nitrogen, 1.6% argon. [17] Earth's atmosphere is 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide.[18]
  • Mars has only about 0.7% of the atmospheric pressure of Earth. Mars' atmosphere is about 6.5 millibar, Earth's atmosphere is 1013 millibar. Surface of Mars is like Earth at 100,000 feet (30 kilometres) in the stratosphere.[19][20]
  • Mars' atmosphere's humidity is 0.03%, Earth's average humidity is about 50% (lowest 0.36%, high 100%).
  • Intense ultraviolet solar radiation, due to thin atmosphere.
  • Intense solar radiation and cosmic rays due to lack of magnetic field.[21][22]
  • Alkaline pH soil at 8.3, due to chlorine in the soil. Earth's average soil pH is about 6.5.
  • Virtually no oxygen at 0.13%. Earth at about 21% oxygen.
  • Mars is covered in dry iron oxide dust, has seasonal global dust storms, with a duration of about a month.
  • Mars' average global temperature is −81 °F (−63 °C; 210 K), Earth's average global temperature is 57 °F (14 °C; 287 K).
  • The seasonal Martian polar ice caps are mostly dry ice, frozen carbon dioxide atmosphere (CO2).[23]
  • Comets falling on Mars bring some water and ice to Mars. The thin Martian atmosphere means the freezing, evaporation, and boiling point of water is all at the same temperature. Thus liquid water cannot exist on the surface of Mars .[24]

See also

References

  1. ↑ 1.0 1.1 Mayo, Wally (December 27, 2022). "Argyre Basin on Mars". https://medium.com/@wmayo444/i-am-extremely-nervous-about-commenting-at-all-in-any-way-on-anything-written-by-such-a-stellar-33454dbe3a01. 
  2. ↑ "Scientists Find the Remains of a Catastrophe on Mars Scattered Across the Planet". July 4, 2023. https://www.inverse.com/science/mars-lacks-a-planet-wide-magnetosphere-but-it-does-have-pockets-of-magnetism. 
  3. ↑ 3.0 3.1 "Comparing Mars to Earth: Catastrophe and history". https://www.eurekalert.org/news-releases/787526. 
  4. ↑ Koberlein, Brian. "Water Is Common In The Universe, But It Might Not Be Abundant On Alien Worlds". https://www.forbes.com/sites/briankoberlein/2019/12/13/water-is-common-in-the-universe-but-it-might-not-be-abundant-on-alien-worlds/. 
  5. ↑ Strazzulla, G.; Brucato, J. R.; Cimino, G.; Palumbo, M. E. (November 1, 1996). "Carbonic acid on Mars?". Planetary and Space Science 44 (11): 1447–1450. doi:10.1016/S0032-0633(96)00079-7. Bibcode: 1996P&SS...44.1447S. https://www.sciencedirect.com/science/article/pii/S0032063396000797. 
  6. ↑ Schaefer, M. W. (September 12, 1992). "The Martian ocean: First acid, then alkaline". Lunar and Planetary Inst., MSATT Workshop on Chemical Weathering on Mars. https://ntrs.nasa.gov/citations/19930022769. 
  7. ↑ "Buried lakes of liquid water discovered on Mars". September 29, 2020. https://www.bbc.com/news/science-environment-54337779. 
  8. ↑ Leask, Ellen K.; Ehlmann, Bethany L. (February 15, 2022). "Evidence for Deposition of Chloride on Mars From Small-Volume Surface Water Events Into the Late Hesperian-Early Amazonian". AGU Advances 3 (1). doi:10.1029/2021AV000534. Bibcode: 2022AGUA....300534L. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021AV000534. 
  9. ↑ https://iopscience.iop.org/article/10.3847/2041-8213/abd93a
  10. ↑ Time History of the Martian Dynamo from Crater Magnetic Field Analysis Journal of Geophysical Research: Planets 118, no. 7 (July 2013), by Robert J. Lillis et al., page 1488–1511
  11. ↑ Timing of the Martian Dynamo Nature 408, by G. Schubert, C. T. Russell, and W. B. Moore, December 7, 2000: page 666–667
  12. ↑ Langlais, Benoit; Thébault, Erwan; Houliez, Aymeric; Purucker, Michael E.; Lillis, Robert J. (2019). "A New Model of the Crustal Magnetic Field of Mars Using MGS and MAVEN" (in en). Journal of Geophysical Research: Planets 124 (6): 1542–1569. doi:10.1029/2018JE005854. ISSN 2169-9100. PMID 35096494. Bibcode: 2019JGRE..124.1542L. 
  13. ↑ Hirt, C.; Claessens, S.J.; Kuhn, M.; Featherstone, W.E. (2012). "Kilometer-resolution gravity field of Mars: MGM2011". Planetary and Space Science 67 (1): 147–154. doi:10.1016/j.pss.2012.02.006. Bibcode: 2012P&SS...67..147H. 
  14. ↑ Jacobson, R. A. (2008). Ephemerides of the Martian Satellites—MAR080. JPL IOM 343R–08–006.
  15. ↑ Lemoine, F. G.; Smith, D. E.; Rowlands, D. D.; Zuber, M. T.; Neumann, G. A.; Chinn, D. S.; Pavlis, D. E. (2001-10-25). "An improved solution of the gravity field of Mars (GMM-2B) from Mars Global Surveyor" (in en). Journal of Geophysical Research: Planets 106 (E10): 23359–23376. doi:10.1029/2000je001426. ISSN 2156-2202. Bibcode: 2001JGR...10623359L. 
  16. ↑ "Mars: Facts - NASA Science". https://science.nasa.gov/mars/facts/. 
  17. ↑ Franz, Heather B.; Trainer, Melissa G.; Malespin, Charles A.; Mahaffy, Paul R.; Atreya, Sushil K.; Becker, Richard H.; Benna, Mehdi; Conrad, Pamela G. et al. (2017-04-01). "Initial SAM calibration gas experiments on Mars: Quadrupole mass spectrometer results and implications". Planetary and Space Science 138: 44–54. doi:10.1016/j.pss.2017.01.014. ISSN 0032-0633. Bibcode: 2017P&SS..138...44F. 
  18. ↑ "Atmosphere". https://education.nationalgeographic.org/resource/atmosphere. 
  19. ↑ "Mars". https://mars.nasa.gov/MPF/mpf/realtime/mars2.html. 
  20. ↑ US Department of Commerce, National Oceanic and Atmospheric Administration. "NDBC - Science Education - What is air pressure?". https://www.ndbc.noaa.gov/education/pressure.shtml. 
  21. ↑ Magazine, Smithsonian; Redd, Nola Taylor. "Radiation Remains a Problem for Any Mission to Mars". https://www.smithsonianmag.com/science-nature/radiation-remains-problem-any-mission-mars-180959092/. 
  22. ↑ Williams, Matt; Today, Universe. "How bad is the radiation on Mars?". https://phys.org/news/2016-11-bad-mars.html. 
  23. ↑ Hess, S.; Henry, R.; Tillman, J. (1979). "The seasonal variation of atmospheric pressure on Mars as affected by the south polar cap". Journal of Geophysical Research 84: 2923–2927. doi:10.1029/JB084iB06p02923. Bibcode: 1979JGR....84.2923H. 
  24. ↑ "Mars & Comets - NASA". https://mars.nasa.gov/comets/. 



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