globalchange  > 气候变化事实与影响
Scopus记录号: 2-s2.0-85061693800
论文题名:
Bilobate comet morphology and internal structure controlled by shear deformation
作者: Matonti C.; Attree N.; Groussin O.; Jorda L.; Viseur S.; Hviid S.F.; Bouley S.; Nébouy D.; Auger A.-T.; Lamy P.L.; Sierks H.; Naletto G.; Rodrigo R.; Koschny D.; Davidsson B.; Barucci M.A.; Bertaux J.-L.; Bertini I.; Bodewits D.; Cremonese G.; Da Deppo V.; Debei S.; De Cecco M.; Deller J.; Fornasier S.; Fulle M.; Gutiérrez P.J.; Güttler C.; Ip W.-H.; Keller H.U.; Lara L.M.; La Forgia F.; Lazzarin M.; Lucchetti A.; López-Moreno J.J.; Marzari F.; Massironi M.; Mottola S.; Oklay N.; Pajola M.; Penasa L.; Preusker F.; Rickman H.; Scholten F.; Shi X.; Toth I.; Tubiana C.; Vincent J.-B.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2019
语种: 英语
英文摘要: Bilobate comets—small icy bodies with two distinct lobes—are a common configuration among comets, but the factors shaping these bodies are largely unknown. Cometary nuclei, the solid centres of comets, erode by ice sublimation when they are sufficiently close to the Sun, but the importance of a comet’s internal structure on its erosion is unclear. Here we present three-dimensional analyses of images from the Rosetta mission to illuminate the process that shaped the Jupiter-family bilobate comet 67P/Churyumov–Gerasimenko over billions of years. We show that the comet’s surface and interior exhibit shear-fracture and fault networks, on spatial scales of tens to hundreds of metres. Fractures propagate up to 500 m below the surface through a mechanically homogeneous material. Through fracture network analysis and stress modelling, we show that shear deformation generates fracture networks that control mechanical surface erosion, particularly in the strongly marked neck trough of 67P/Churyumov–Gerasimenko, exposing its interior. We conclude that shear deformation shapes and structures the surface and interior of bilobate comets, particularly in the outer Solar System where water ice sublimation is negligible. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122625
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: Aix Marseille Université, CNRS, CNES, LAM, Marseilles, France; Aix Marseille Université, CNRS, IRD, INRA, Coll France, CEREGE, RRH, Aix-en-Provence, France; Faculty of Natural Sciences, University of Stirling, Stirling, United Kingdom; Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Planetenforschung, Berlin, Germany; GEOPS—Géosciences Paris Sud, Université Paris-Sud, CNRS, Université Paris-Saclay, Orsay, France; LATMOS, CNRS/UVSQ/IPSL, Guyancourt, France; Max Planck Institute for Solar System Research, Göttingen, Germany; University of Padova, Department of Physics and Astronomy “Galileo Galilei”, Padua, Italy; University of Padova, Center of Studies and Activities for Space (CISAS) “G. Colombo”, Padua, Italy; CNR-IFN UOS Padova LUXOR, Padua, Italy; Centro de Astrobiologia, CSIC-INTA, Torrejon de Ardoz, Madrid, Spain; International Space Science Institute, Bern, Switzerland; Science Support Office, European Space Research and Technology Centre/ESA, Noordwijk, Netherlands; Jet Propulsion Laboratory, M/S 183-401, Pasadena, CA, United States; LESIA, Observatoire de Paris, Université PSL, CNRS, Univ. Paris Diderot, Sorbonne Paris Cité, Sorbonne Université, Meudon, France; Physics Department, Auburn University, Auburn, AL, United States; INAF, Astronomical Observatory of Padova, Padua, Italy; University of Padova, Department of Industrial Engineering, Padua, Italy; University of Trento, Faculty of Engineering, Trento, Italy; INAF Astronomical Observatory of Trieste, Trieste, Italy; Instituto de Astrofìsica de Andalucìa (CSIC), Granada, Spain; Graduate Institute of Astronomy, National Central University, Chung-Li, Taiwan; Space Science Institute, Macau University of Science and Technology, Taipa, Macau; Institut fur Geophysik und Extraterrestrische Physik, Technische Universität Braunschweig, Braunschweig, Germany; University of Padova, Department of Geosciences, Padua, Italy; Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden; PAS Space Research Center, Warsaw, Poland; Konkoly Observatory, Budapest, Hungary

Recommended Citation:
Matonti C.,Attree N.,Groussin O.,et al. Bilobate comet morphology and internal structure controlled by shear deformation[J]. Nature Geoscience,2019-01-01
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Matonti C.]'s Articles
[Attree N.]'s Articles
[Groussin O.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Matonti C.]'s Articles
[Attree N.]'s Articles
[Groussin O.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Matonti C.]‘s Articles
[Attree N.]‘s Articles
[Groussin O.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.