Early Mars climate near the Noachian–Hesperian boundary: Independent evidence for cold conditions from basal melting of the south polar ice sheet (Dorsa Argentea Formation) and implications for valley network formation

Icarus ◽  
2012 ◽  
Vol 219 (1) ◽  
pp. 25-40 ◽  
Author(s):  
James L. Fastook ◽  
James W. Head ◽  
David R. Marchant ◽  
Francois Forget ◽  
Jean-Baptiste Madeleine
Keyword(s):  
Network Formation ◽  
Ice Sheet ◽  
Polar Ice ◽  
The South ◽  
Independent Evidence ◽  
Early Mars ◽  
Valley Network ◽  
Basal Melting ◽  
South Polar

scholarly journals Drainage network development in the Keanakāko‘i tephra, Kīlauea Volcano, Hawai‘i: Implications for fluvial erosion and valley network formation on early Mars

2012 ◽  
Vol 117 (E8) ◽  
pp. n/a-n/a ◽  
Author(s):  
Robert A. Craddock ◽  
Alan D. Howard ◽  
Rossman P. Irwin ◽  
Stephen Tooth ◽  
Rebecca M. E. Williams ◽  
...  
Keyword(s):  
Network Formation ◽  
Kilauea Volcano ◽  
Drainage Network ◽  
Network Development ◽  
Fluvial Erosion ◽  
Kīlauea Volcano ◽  
Early Mars ◽  
Valley Network

scholarly journals Timescales of the Climate Record in the South Polar Ice Cap of Mars

2019 ◽  
Vol 46 (13) ◽  
pp. 7268-7277 ◽  
Author(s):  
Patricio Becerra ◽  
Michael M. Sori ◽  
Nicolas Thomas ◽  
Antoine Pommerol ◽  
Emanuele Simioni ◽  
...  
Keyword(s):  
Polar Ice ◽  
The South ◽  
Climate Record ◽  
Ice Cap ◽  
South Polar

Bellingshausen’s “Mountains”: The 1820 Russian sighting of Antarctica and Bellingshausen’s theory of the South Polar ice cap

Polar Record ◽  
2019 ◽  
Vol 55 (6) ◽  
pp. 392-401
Author(s):  
Rip Bulkeley
Keyword(s):  
English Translation ◽  
Polar Ice ◽  
The South ◽  
Ice Cap ◽  
Dronning Maud Land ◽  
South Polar

AbstractThere has been some uncertainty as to which of the two southerly probes, during which Bellingshausen passed latitude 69°S in early 1820, achieved the first sighting of an ice coast of Dronning Maud Land in Eastern Antarctica. The author criticizes Frank Debenham’s English translation of Bellingshausen’s narrative before presenting and discussing new translations of Bellingshausen’s descriptions of those events, with relevant sections of his track chart, plus a third passage from the book which interpreted what was seen. He concludes that the Russians first sighted an ice coast in mid-February, rather than late January as has been widely claimed.

Mapping the topography beneath the southern Martian polar cap using MARSIS high-resolution data

2021 ◽  
Author(s):  
Giacomo Di Silvestro ◽  
Roberto Orosei ◽  
Luca Guallini ◽  
Andrea Morelli
Keyword(s):  
Electromagnetic Waves ◽  
Learning Algorithm ◽  
Polar Ice ◽  
The South ◽  
High Resolution Data ◽  
Ice Cap ◽  
Italian American ◽  
Radar Echo ◽  
Internal Properties ◽  
South Polar

<p>The ESA Mars Express mission was launched in June 2003 and reached Martian orbit in December of the same year. Among the instruments onboard, the Italian-American radar MARSIS has retrieved valuable data, therefore contributing many discoveries related to the Red Planet, such as the evidence of sub-glacial water lakes beneath the South Pole of Mars. The technique used by this antenna is the radar echo sounding which, thanks to the electromagnetic waves emitted at frequencies in the HF range – in four separate bands centered at 1.8, 3, 4, and 5 MHz - has the ability to penetrate the ice masses, allowing the study of the internal properties and structures of glaciers and the regolith underneath.<br>Based on selected MARSIS radargrams, the main purpose of our analysis is to define the topography and main morphologies of the bedrock beneath Ultimi Lobe, part of the South Polar Ice Cap. Geologically speaking, this region is characterized by the South Polar Layered Deposits unit, widely showing complex layering and locally broad deformational structures (i.e., faults and folds). In particular, through the use of a georeferenced model of the bedrock surface, we focused on the search for low-topographies possibly consistent with basins able to contain the subglacial water reservoirs inferred by Orosei et al. (2018) and Lauro et al. (2020). Furthermore, we are implementing an algorithm focused on semi-automatic surface delineation using radar echo observations. Through the implementation of this script and retrieved data/images, we suggest that the machine-learning algorithm could be trained for further analysis.</p>

scholarly journals Modeled Subglacial Water Flow Routing Supports Localized Intrusive Heating as a Possible Cause of Basal Melting of Mars' South Polar Ice Cap

2019 ◽  
Vol 124 (8) ◽  
pp. 2101-2116 ◽  
Author(s):  
N. S. Arnold ◽  
S. J. Conway ◽  
F. E. G. Butcher ◽  
M. R. Balme
Keyword(s):  
Water Flow ◽  
Polar Ice ◽  
Flow Routing ◽  
Ice Cap ◽  
Basal Melting ◽  
Possible Cause ◽  
South Polar

The first publication of The South Polar Times, Volume IV

Polar Record ◽  
2013 ◽  
Vol 50 (1) ◽  
pp. 112-112
Author(s):  
Ann Savours
Keyword(s):  
Ice Sheet ◽  
The South ◽  
Mcmurdo Sound ◽  
Antarctic Expedition ◽  
Antarctic Continent ◽  
Terra Nova ◽  
The Antarctic ◽  
South Polar

Polar bibliophiles, librarians and readers will be familiar with the three handsome facsimile volumes of the first Antarctic newspaper, published in 1907 and 1914 and edited in turn by E. Shackleton, L.C. Bernacchi and A. Cherry-Garrard during the National Antarctic Expedition, 1901–1904 and the British Antarctic Expedition 1910–1913. These expeditions were led by Captain R.F. Scott R.N. in Discovery and Terra Nova respectively. From S.Y. Discovery, beset for two winters in the ice of McMurdo Sound were made the first extensive sledge journeys into the interior of the Antarctic continent, including the great ice sheet or plateau. These were further prolonged, following Shackleton's Nimrod expedition, while the pursuit of science during both Scott expeditions led to the publication in London of two monumental sets of scientific and geographical results, plus new charts and maps.

scholarly journals Alternatives to Liquid Water Beneath the South Polar Ice Cap of Mars

2021 ◽  
Author(s):  
Dustin M. Schroeder ◽  
Gregor Steinbrügge
Keyword(s):  
Liquid Water ◽  
Polar Ice ◽  
The South ◽  
Ice Cap ◽  
South Polar
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