Lauren Mc Keown

Lauren Mc Keown
NASA JPL

PhD

About

19
Publications
2,504
Reads
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92
Citations
Citations since 2017
19 Research Items
92 Citations
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2017201820192020202120222023051015202530
Introduction
I am a planetary science postdoc at NASA JPL working on icy planetary surface processes on Mars and Europa through analog laboratory experiments under low temperature and pressure regimes and remote sensing image analysis.
Additional affiliations
June 2015 - August 2015
NASA Ames Research Center
Position
  • Summer Intern
September 2013 - September 2014
Trinity College Dublin
Position
  • Research Assistant
Education
September 2009 - September 2013
University College Dublin
Field of study
  • Physics with Astronomy and Space Science

Publications

Publications (19)
Article
Full-text available
The local redistribution of granular material by sublimation of the southern seasonal $${\hbox {CO}}_2$$ CO 2 ice deposit is one of the most active surface shaping processes on Mars today. This unique geomorphic mechanism is hypothesised to be the cause of the dendritic, branching, spider-like araneiform terrain and associated fans and spots—featur...
Article
Full-text available
Carbon dioxide is Mars’ primary atmospheric constituent and is an active driver of Martian surface evolution. CO2 ice sublimation mechanisms have been proposed for a host of features that form in the contemporary Martian climate. However, there has been very little experimental work or quantitative modelling to test the validity of these hypotheses...
Article
Extensive evidence of landform-scale martian geomorphic changes has been acquired in the last decade, and the number and range of examples of surface activity have increased as more high-resolution imagery has been acquired. Within the present-day Mars climate, wind and frost/ice are the dominant drivers, resulting in large avalanches of material d...
Article
On Earth, hydrostatic or closed-system pingos (CSPs) are perennial ice-cored mounds formed by the freeze-thaw cycling of water when or as thermokarst lakes lose their water by drainage or evaporation. The mounds vary in shape from circular or sub-circular to elongate, are sub-kilometre in their long axes, and may reach decametres in height. Often,...
Article
Full-text available
Plain Language Summary Araneiforms, more colloquially coined “spiders,” are strange branched networks of troughs that are carved in the Martian regolith within the south polar regions, poleward of ∼70°. They have been proposed to form in spring, when sunlight passes through and heats the Martian seasonal CO2 ice layer, causing gas to build up benea...
Article
Full-text available
Araneiforms are an exotic type of feature exclusive to the Martian south polar terrain which have no known direct Earth analog. The dilation and recession of the seasonal CO 2 ice deposit has long been hypothesized to be responsible for their gradual formation. However, high south polar latitude araneiforms have not been observed to form or extend...
Article
Full-text available
Martian meteorites represent the only samples of Mars available for study in terrestrial laboratories. In addition to their crystallization and surface ejection ages, these samples provide a detailed understanding of the geochemistry of the martian crust. One of the major outstanding problems regarding martian meteorites is locating the exact sourc...
Article
Full-text available
Martian meteorites represent the only samples of Mars available for study in terrestrial laboratories. In addition to their crystallization and surface ejection ages, these samples provide a detailed understanding of the geochemistry of the martian crust. One of the major outstanding problems regarding martian meteorites is locating the exact sourc...
Article
Full-text available
On Earth, ice complexes are commonplace landscapes amidst the continuous permafrost of coastal or near-coastal plains in the Arctic. Formed by the freeze-thaw cycling of water, ice complex features include: hummocky (thermokarstic) terrain, inflated or deflated by the presence of absence of excess ice; thermokarst lakes (i.e. excess ice that has th...

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