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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28662
Title: The Rocky-Like Behavior of Cometary Landslides on 67P/Churyumov-Gerasimenko
Authors: LUCCHETTI, ALICE 
PENASA, LUCA
PAJOLA, MAURIZIO 
MASSIRONI, MATTEO
Brunetti, Maria Teresa
CREMONESE, Gabriele 
Oklay, Nilda
Vincent, Jean-Baptiste
Mottola, Stefano
FORNASIER, SONIA
Sierks, Holger
Naletto, Giampiero
Lamy, Philippe L.
Rodrigo, Rafael
Koschny, Detlef
Davidsson, Bjorn
Barbieri, Cesare
BARUCCI, MARIA ANTONIETTA
Bertaux, Jean-Loup
BERTINI, IVANO
Bodewits, Dennis
CAMBIANICA, PAMELA
Da Deppo, Vania
Debei, Stefano
De Cecco, Mariolino
Deller, Jacob
FERRARI, SABRINA
Ferri, Francesca
FRANCESCHI, MARCO
FULLE, Marco
Gutiérrez, Pedro
Güttler, Carsten
Ip, Wing-H.
Keller, Uwe
Lara, Luisa
Lazzarin, Monica
Moreno, Jose Lopez
MARZARI, FRANCESCO
Tubiana, Cecilia
Issue Date: 2019
Journal: GEOPHYSICAL RESEARCH LETTERS 
Number: 46
Issue: 24
First Page: 14336
Abstract: Landslides have been identified on several solar system bodies, and different mechanisms have been proposed to explain their runout length. We analyze images from the Rosetta mission and report the global characterization of such features on comet 67P/Churyumov-Gerasimenko's surface. By assuming the height to runout length as an approximation for the friction coefficient of landslide material, we find that on comet 67P, this ratio falls between 0.50 and 0.97. Such unexpected high values reveal a rocky-type mechanical behavior that is much more akin to Earth dry landslides than to icy satellites' mass movements. This behavior indicates that 67P and likely comets in general are characterized by consolidated materials possibly rejecting the idea that they are fluffy aggregates. The variability of the runout length among 67P landslides can be attributed to the different volatile content located in the top few meters of the cometary crust, which can drive the mass movement.
URI: http://hdl.handle.net/20.500.12386/28662
URL: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019GL085132
ISSN: 0094-8276
DOI: 10.1029/2019GL085132
Bibcode ADS: 2019GeoRL..4614336L
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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