Past, Present, and Future of Mars Polar Science: Outcomes and Outlook from the 7th International Conference on Mars Polar Science and Exploration DOI Creative Commons
P. Becerra, I. B. Smith, Shannon M. Hibbard

et al.

The Planetary Science Journal, Journal Year: 2021, Volume and Issue: 2(5), P. 209 - 209

Published: Oct. 1, 2021

Abstract Mars Polar Science is a subfield of science that encompasses all studies the cryosphere and its interaction with Martian environment. Every 4 yr, community scientists dedicated to this meets discuss new findings debate open issues in International Conference on Exploration (ICMPSE). This paper summarizes proceedings seventh ICMPSE progress made since sixth edition. We highlight most important advances present salient questions field today, as discussed agreed upon by participants conference. also feature agreed-upon suggestions for future methods, measurements, instruments, missions would be essential answering main presented. work thus an overview current status intended serve road map direction during next yr beyond, helping shape contribution within larger context planetary exploration.

Language: Английский

Spatio‐Temporal Level Variations of the Martian Seasonal South Polar Cap From Co‐Registration of MOLA Profiles DOI Creative Commons
Haifeng Xiao, Alexander Stark, Frédéric Schmidt

et al.

Journal of Geophysical Research Planets, Journal Year: 2022, Volume and Issue: 127(7)

Published: July 1, 2022

Abstract The seasonal deposition and sublimation of CO 2 represents a major element in the Martian volatile cycle. Here, co‐registration strategies are applied to Mars Orbiter Laser Altimeter profiles obtain spatio‐temporal variations snow/ice level Seasonal South Polar Cap (SSPC), grid elements 0.5° latitude from 60° 87°S 10° longitude. maximum range 2–2.5 m is observed over Residual Cap. Peak at Year 25 (MY25) found be typically ∼0.5 higher than those MY24. total volume estimated peak approximately 9.4 × 10 12 3 . In addition, map average bulk density SSPC during its recession derived. It implies much more snowfall‐like precipitation surroundings elsewhere on Mars.

Language: Английский

Citations

13
Martian Araneiforms: A Review DOI Creative Commons
Lauren Mc Keown, S. Diniega, Ganna Portyankina

et al.

Journal of Geophysical Research Planets, Journal Year: 2023, Volume and Issue: 128(4)

Published: April 1, 2023

Abstract Araneiforms are enigmatic dendritic negative topography features native to Mars. Found across a variety of substrates and exhibiting range scales, morphologies, activity level, they hypothesized form via insolation‐induced basal sublimation seasonal CO 2 ice. With no direct Earth analog, araneiforms an example how our understanding extant surface can evolve through multipronged approach using high resolution change‐detection imaging, conceptual numerical modeling, analog laboratory work. This review offers primer on the current state knowledge Martian araneiforms. We outline development their driving hypothesis various methodologies used study formation. furthermore present open questions identify future modeling work mission objectives that may address these questions. Finally, this highlights be as proxy for local conditions perhaps even past dynamics also reflect lessons learnt from studying them opportunities comparative planetology harnessed in unusual icy worlds have analog.

Language: Английский

Citations

7
Study on climbing strategy and analysis of Mars rover DOI
Zhe Chen, Meng Zou, Dong Pan

et al.

Journal of Field Robotics, Journal Year: 2023, Volume and Issue: 40(5), P. 1172 - 1186

Published: April 7, 2023

Abstract To ensure the safety and efficiency of Zhurong Mars rover when climbing a slope on Mars, forces under four methods, which are normal climbing, Z‐type diagonal bionic wriggle analyzed. Each method corresponds to different maximum slopes. The experiments carried out with backup dense soft terrains determine range for methods. According slope, peak current, cost transport, state terrain, strategy is given. For terrains, soil cohesive 0.99 1.4 kN/m n +1 friction modules 1528 700 +2 , respectively. Specifically, recommended low‐range slopes, while or suggested medium‐range found be optimal high‐range rover, it fails if critical values exceeded. These results provide valuable insights human operators planning rover's slope‐climbing actions Mars.

Language: Английский

Citations

7
The astrobiological potential of the Makgadikgadi Basin, Botswana: Field Analogue for Planetary Exploration DOI
Trhas Hadush Kahsay, Asfawossen Asrat, Fulvio Franchi

et al.

Planetary and Space Science, Journal Year: 2024, Volume and Issue: 249, P. 105943 - 105943

Published: July 24, 2024

Language: Английский

Citations

2
Characterizing Seasonal and Residual Ices at the South Pole of Mars Using a Universal Set of CRISM Spectral Endmembers DOI Creative Commons
S. F. A. Cartwright, W. M. Calvin, K. D. Seelos

et al.

Journal of Geophysical Research Planets, Journal Year: 2022, Volume and Issue: 127(11)

Published: Oct. 8, 2022

Abstract Current maps of compositional variation across south polar ice exposures on Mars do not resolve the meter‐scales at which erosional processes are most active, ultimately limiting our understanding how deposits form and evolve they can be used to interpret long‐term climate records. In this study, we use k ‐means clustering random forest classification identify map a set universal spectral endmembers 167 high‐resolution observations acquired during southern summer by Compact Reconnaissance Imaging Spectrometer for Mars. The 21 show distinct combinations strengths key infrared absorption features reflecting diverse mixtures CO 2 ice, H O dust. resulting framework characterize nature both seasonal frost residual ices it overlies variety terrains. Following large dust event Year 28, ‐ice (RCD) were covered an unusually thick or long‐lived deposit frost. Within RCD, low‐albedo material around display absorptions consistent with outer margins RCD. These peripheral water‐ice unexpected in content. Most notably, regions within several km edge RCD contributions from even after has been removed. results inform investigations focused dynamics deposition, development morphologies, creation records stratigraphy.

Language: Английский

Citations

11
Change detection and monitoring of active Martian surface phenomena with the Colour and Stereo Surface Imaging System (CaSSIS) onboard the ExoMars Trace Gas Orbiter (TGO) DOI Creative Commons
Vidhya Ganesh Rangarajan, L. L. Tornabene, G. R. Osinski

et al.

Icarus, Journal Year: 2023, Volume and Issue: 394, P. 115443 - 115443

Published: Jan. 26, 2023

Language: Английский

Citations

6
Initial results of the meteorological data from the first 325 sols of the Tianwen-1 mission DOI Creative Commons
Chunsheng Jiang, Jiang Yu,

Hengnian Li

et al.

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Feb. 27, 2023

As the Zhurong rover landed on surface of Mars in 2021, it began a months-long collection data. Equipped with highly sensitive sensors, is capable being meteorological station at Mars. The Climate Station, one onboard sensors high sensitivity, helps Tianwen-1 lander to collect data Martian surface, via which air temperature, atmospheric pressure, wind speed and direction are measured. In this paper, we present results temperature from Station Zhurong's landing site. collected 176 solar days out entire rover's mission time, 325 days. We use trigonometric function fit relationship between longitude (Ls) after compare those Viking I. Our analysis shows that seasonal evolution similar patterns concluded previous missions different sites. discover appears maximum early summer near site, analyze occurrence dust storms by combining temperature. provide some evidence changes pattern Tianwen-1's south Utopia Planitia. With ongoing further, more expected future.

Language: Английский

Citations

6
Polar science results from Mars Reconnaissance Orbiter: Multiwavelength, multiyear insights DOI
M. E. Landis, Pruthviraj J. Acharya, N. Alsaeed

et al.

Icarus, Journal Year: 2023, Volume and Issue: 419, P. 115794 - 115794

Published: Sept. 13, 2023

Language: Английский

Citations

6
Modeling Slope Microclimates in the Mars Planetary Climate Model DOI Creative Commons
Lucas Lange, F. Forget, E. Dupont

et al.

Journal of Geophysical Research Planets, Journal Year: 2023, Volume and Issue: 128(10)

Published: Oct. 1, 2023

Abstract A large number of surface features (e.g., frost, gullies, slope streaks, recurring lineae) are observed on Martian slopes. Their activity is often associated with the specific microclimates these slopes, which have been mostly studied one‐dimensional radiative balance models to date. We develop here a parameterization simulate in 3D Global Climate Models. first demonstrate that any can be thermally represented by poleward or equatorward slope, is, daily average, minimum, and maximum temperatures depend North‐South component slope. Based this observation, we implement subgrid‐scale represent (radiative fluxes, volatile condensation, ignoring winds for now) Mars Planetary Model validate it through comparisons temperature measurements frost detections sloped terrains. With new model, show do not significant impact seasonal CO 2 H O cycles global scale. Furthermore, short‐scale slopes (i.e., less than ∼1 km length) significantly thermal state atmosphere. Ninety‐one percent active gullies found where our model predicts suggesting their related processes involving ice. However, low thicknesses (≤tens cm) predicted at mid‐latitudes rule out mechanisms amounts (∼meters) This opens way studies surface‐atmosphere interactions present past climates.

Language: Английский

Citations

6
Revelations of interannual dune evolution from the swiftest aeolian system on Mars by MRO/HiRISE long-term monitoring DOI Creative Commons
M. Chojnacki, D. A. Vaz, Pruthviraj J. Acharya

et al.

Icarus, Journal Year: 2023, Volume and Issue: 419, P. 115863 - 115863

Published: Nov. 11, 2023

The north polar region of Mars, with its greater atmospheric pressure and vast inventory ever-changing volatiles (e.g., CO2, H2O), hosts arguably the most active diverse aeolian bedform systems on planet. Here, we explore how these dune fields evolve spatiotemporally using up to 8 Mars years (16 Earth years) MRO HiRISE observations test impact various boundary conditions annual mobility. A high degree sand flux heterogeneity was observed for some dunes, whereas other sites displayed steady-state migration relative long-term rates. These large changes in are attributed variable length frost-free seasons, sediment availability relation timing peak katabatic winds, influence global dust storms seasonal ice thickness. Consistent our previous work, continue observe extremely transport rates at Olympia Cavi. All stages system evolution observable (sand patch > protodune dune), along additional phenomena not previously outside terrestrial settings calving collisions, remote transfer). Transitory protodunes may from modest mounds prominent barchans slipfaces several meters tall within 3–5 years, while adjacent duneforms suffer collapse as they lose supply. Martian protodunes, which appear be larger than equivalents, mature dunes found downwind among swiftest yet reported Mars. rapidly evolving cryo-aeolian provide a window into longer-term landscape non-polar fields.

Language: Английский

Citations

6