Lauren Mc Keown

Lauren Mc Keown
California Institute of Technology | CIT

PhD

About

15
Publications
1,736
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52
Citations
Introduction
I am a planetary scientist with particular interest in icy planetary surface processes. I am driven to understand active Martian surface processes such as the formation of araneiforms by cryoventing and linear gullies by sliding CO2 ice blocks. I specialise in analog laboratory experiments under low pressure and temperature conditions and the analysis of multispectral remote-sensing data, in particular HiRISE images and DTMs. I am also interested in the surfaces of icy moons and plume dynamics.
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 (15)
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
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...
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,...