Mathematics – Logic
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1661b&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1661
Mathematics
Logic
Scientific paper
Lobate scarps on the Moon are relatively smallscale tectonic landforms observed in mare basalts and more commonly, highland material [1-4]. These scarps are the surface expression of thrust faults, and are the most common tectonic landform on the lunar farside [1-4]. Prior to Lunar Reconnaissance Orbiter (LRO) observations, lobate scarps were largely detected only in equatorial regions because of limited Apollo Panoramic Camera and high resolution Lunar Orbiter coverage with optimum lighting geometry [1-3]. Previous measurements of the relief of lobate scarps were made for 9 low-latitude scarps (<±20°), and range from ~6 to 80 m (mean relief of ~32 m) [1]. However, the relief of these scarps was primarily determined from shadow measurements with limited accuracy from Apollo-era photography. We present the results of a detailed characterization of the relief and morphology of a larger sampling of the population of lobate scarps. Outstanding questions include what is the range of maximum relief of the lobate scarps? Is their size and structural relief consistent with estimates of the global contractional strain? What is the range of horizontal shortening expressed by lunar scarps and how does this range compare with that found for planetary lobate scarps? Lunar Reconnaissance Orbiter Camera (LROC) images and Lunar Orbiter Laser Altimeter (LOLA) ranging enable detection and detailed morphological analysis of lobate scarps at all latitudes. To date, previously undetected scarps have been identified in LROC imagery in 75 different locations, over 20 of which occur at latitudes greater than ±60° [5-6]. LROC stereo-derived digital terrain models (DTMs) and LOLA data are used to measure the relief and characterize the morphology of 26 previously known (n = 8) and newly detected (n = 18) lobate scarps. Lunar examples are compared to lobate scarps on Mars, Mercury, and 433 Eros (Hinks Dorsum).
Banks Maria Elaine
Ojha Lujendra
Robinson Mark S.
Tornabene Livio L.
Tran T. T.
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