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  • 1
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    The Caldarusani-Gruiu geodynamic polygon (1980)
    In:  Rev. Roumaine Géol., Géophys. et Géogr., Roma, Publicazioni dell'Istituto Nazionale di Geofisica, vol. 24, no. 2, pp. 171-191, pp. B04102, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1980
    Keywords: EUROPROBE (Geol. and Geophys. in eastern Europe) ; Geodesy ; Earthquake precursor: prediction research ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Earthquake precursor: deformation or strain ; Fault zone ; Vrancea ; Caldarusani
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Cost-Performance Parametrics for Transporting Small Packages to the Mars Vicinity (2015)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: This paper explores the costs and performance required to deliver a small-sized payload package (CubeSat-sized, for instance) to various transportation nodes en route to Mars and near-Mars destinations (such as Mars moons, Phobos and Deimos). Needed is a contemporary assessment and summary compilation of transportation metrics that factor both performance and affordability of modern and emerging delivery capabilities. The paper brings together: (a) required mass transport gear ratios in delivering payload from Earths surface to the Mars vicinity, (b) the cyclical energy required for delivery, and (c) the affordability and availability of various means of transporting material across various Earth-Moon vicinity and Near-Mars vicinity nodes relevant to Mars transportation. Examples for unit deliveries are computed and tabulated, using a CubeSat as a unit, for periodic near-Mars delivery campaign scenarios.
    Keywords: Space Transportation and Safety; Mechanical Engineering
    Type: KSC-E-DAA-TN24125 , 2015 Commercial and Government Responsive Access to Space Technology Exchange (CRASTE); Jun 21, 2015 - Jun 25, 2015; Chantilly, VA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Properties of Rubble-Pile Asteroid (101955) Bennu from OSIRIS-REx Imaging and Thermal Analysis (2019)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: Establishing the abundance and physical properties of regolith and boulders on asteroids is crucial for understanding the formation and degradation mechanisms at work on their surfaces. Using images and thermal data from NASA's Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft, we show that asteroid (101955) Bennu's surface is globally rough, dense with boulders, and low in albedo. The number of boulders is surprising given Bennu's moderate thermal inertia, suggesting that simple models linking thermal inertia to particle size do not adequately capture the complexity relating these properties. At the same time, we find evidence for a wide range of particle sizes with distinct albedo characteristics. Our findings imply that ages of Bennu's surface particles span from the disruption of the asteroid's parent body (boulders) to recent in situ production (micrometre-scale particles).
    Keywords: Lunar and Planetary Science and Exploration
    Type: GSFC-E-DAA-TN67770 , Nature Astronomy (e-ISSN 2397-3366); 3; 341–351
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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