Showing papers by "Carly Howett published in 2014"
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Colorado School of Mines1, University of California, Santa Cruz2, Brown University3, Southwest Research Institute4, Lunar and Planetary Institute5, University of Hawaii6, Purdue University7, Goddard Space Flight Center8, Massachusetts Institute of Technology9, Lamont–Doherty Earth Observatory10, Carnegie Institution for Science11
TL;DR: The spatial pattern of magmatic-tectonic structures bounding Procellarum is consistent with their formation in response to thermal stresses produced by the differential cooling of the province relative to its surroundings, coupled with magmatic activity driven by the greater-than-average heat flux in the region.
Abstract: The Procellarum region is a broad area on the nearside of the Moon that is characterized by low elevations, thin crust, and high surface concentrations of the heat-producing elements uranium, thorium, and potassium. The Procellarum region has been interpreted as an ancient impact basin approximately 3200 km in diameter, though supporting evidence at the surface would have been largely obscured as a result of the great antiquity and poor preservation of any diagnostic features. Here we use data from the Gravity Recovery and Interior Laboratory (GRAIL) mission to examine the subsurface structure of Procellarum. The Bouguer gravity anomalies and gravity gradients reveal a pattern of narrow linear anomalies that border the Procellarum region and are interpreted to be the frozen remnants of lava-filled rifts and the underlying feeder dikes that served as the magma plumbing system for much of the nearside mare volcanism. The discontinuous surface structures that were earlier interpreted as remnants of an impact basin rim are shown in GRAIL data to be a part of this continuous set of quasi-rectangular border structures with angular intersections, contrary to the expected circular or elliptical shape of an impact basin. The spatial pattern of magmatic-tectonic structures bounding Procellarum is consistent with their formation in response to thermal stresses produced by the differential cooling of the province relative to its surroundings, coupled with magmatic activity driven by the elevated heat flux in the region.
86 citations
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TL;DR: In this paper, the authors modeled an electron precipitation pattern expected on Mimas, Tethys, and Dione, using two different approaches: a guiding-center, bounce-averaged model and the effects of electron pitch angle and gyrophase on weathering pattern.
27 citations
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TL;DR: In this paper, the authors presented a map of the variation in bolometric Bond albedo and thermal inertia across Rhea and Dione using various day and nighttime observations, taken by Cassini's Composite Infrared Spectrometer (CIRS).
25 citations
01 Feb 2014
5 citations