Journal articles
Fractures on comet 67P/Churyumov-Gerasimenko observed by Rosetta/OSIRIS
M.R. El-Maarry
1
N. Thomas
1
A. Gracia-Berná
1
R. Marschall
1
A-T. Auger
2
O. Groussin
2
S. Mottola
3
M. Pajola
4
M. Massironi
4, 5
S. Marchi
6
S. Höfner
7
F. Preusker
3
F. Scholten
3
L. Jorda
2
Ekkehard Kührt
3
H. U. Keller
3, 8
H. Sierks
7
Michael F. A'Hearn
9
C. Barbieri
10
M. A. Barucci
11
Jean-Loup Bertaux
12
I. Bertini
4
G. Cremonese
13
V. da Deppo
14
B. Davidsson
15
S. Debei
16
M. de Cecco
17
J. Deller
7
C. Güttler
7
S. Fornasier
11
M. Fulle
18
P. J. Gutierrez
19
M. Hofmann
7
S. F. Hviid
3
W-H. Ip
20
J. Knollenberg
3
D. Koschny
21
G. Kovacs
7
J.-R. Kramm
7
M. Küppers
22
P. L. Lamy
2
L. M. Lara
19
M. Lazzarin
10
J. J. Lopez Moreno
19
F. Marzari
10
H. Michalik
23
G. Naletto
4, 14, 16
N. Oklay
7
A. Pommerol
1
H. Rickman
15, 24
R. Rodrigo
25, 26
C. Tubiana
7
J-B. Vincent
7
J-B. Vincent 7
Author
1
Physikalisches Institut [Bern] (Sidlerstr. 5, 3012 Bern - Switzerland)
- Universität Bern [Bern] (Hochschulstrasse 4 - CH-3012 Bern - Switzerland)
2
LAM - Laboratoire d'Astrophysique de Marseille (Pôle de l'Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13 - France)
- AMU - Aix Marseille Université : UMR7326 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CNES - Centre National d'Études Spatiales [Toulouse] : UMR7326 (18 avenue Edouard Belin 31401 Toulouse - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7326 (France)
4
CISAS - Centro di Ateneo di Studi e Attività Spaziali “Giuseppe Colombo” (Via Venezia 15, 35131 Padova, Italie - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
5
Dipartimento di Geoscienze [Padova] (Via G. Gradenigo 6,
35131 Padova - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
6
SSERVI - Solar System Exploration Research Virtual Institute (Boulder - United States)
- SwRI - Southwest Research Institute [Boulder] (1050 Walnut St, Suite 300, Boulder, CO 80302 - United States)
7
MPS - Max-Planck-Institut für Sonnensystemforschung (Göttingen, Allemagne - Germany)
- Max-Planck-Gesellschaft (Jägerstrasse, 10-11, D-10117 Berlin - Germany)
8
IGEP - Institut für Geophysik und Extraterrestrische Physik [Braunschweig] (Mendelssohnstr. 3, D-38106 Braunschweig - Germany)
- Technische Universität Braunschweig [Braunschweig] (38092 Braunschweig - Germany)
9
Department of Astronomy [College Park] (United States)
- University of Maryland [College Park] (College Park, MD 20742 - United States)
- University of Maryland System (United States)
10
Dipartimento di Fisica e Astronomia "Galileo Galilei" (via Marzolo 8, I-35131 Padova - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
11
LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique (5, place Jules Janssen 92190 MEUDON - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8109 (France)
- UPD7 - Université Paris Diderot - Paris 7 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - Université Paris sciences et lettres (60 rue Mazarine 75006 Paris - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- UPMC - Université Pierre et Marie Curie - Paris 6 (4 place Jussieu - 75005 Paris - France)
12
IMPEC - LATMOS (France)
- LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales (11 boulevard d'Alembert
Quartier des Garennes
78280 - Guyancourt - France)
- UVSQ - Université de Versailles Saint-Quentin-en-Yvelines : UMR8190 (55 avenue de Paris - 78035 Versailles cedex - France)
- UPMC - Université Pierre et Marie Curie - Paris 6 : UMR8190 (4 place Jussieu - 75005 Paris - France)
- INSU - CNRS - Institut national des sciences de l'Univers : UMR8190 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8190 (France)
13
OAPD - INAF - Osservatorio Astronomico di Padova (Vicolo dell'Osservatorio, 5, 35122 Padova - Italy)
- INAF - Istituto Nazionale di Astrofisica (Viale del Parco Mellini 84, 00136 Roma - Italy)
14
IFN - CNR Institute for Photonics and Nanotechnologies (Italy)
- CNR - Consiglio Nazionale delle Ricerche [Roma] (Piazzale Aldo Moro,7 - 00185, Roma - Italy)
15
Department of Physics and Astronomy [Uppsala] (751 05 Uppsala - Sweden)
- Uppsala University (Box 256, SE-751 05 Uppsala - Sweden)
16
Department of Industrial Engineering [Padova] (Dipartimento di Ingegneria Industriale, Via Gradenigo, 6/a, 35131 Padova - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
17
University of Trento [Trento] (via Calepina, 14 - I-38122 Trento
- Italy)
18
OAT - INAF - Osservatorio Astronomico di Trieste (Via G.B. Tiepolo 11 34143 TRIESTE, Italy - Italy)
- INAF - Istituto Nazionale di Astrofisica (Viale del Parco Mellini 84, 00136 Roma - Italy)
19
IAA - Instituto de Astrofísica de Andalucía (Granada E-18008 - Spain)
- CSIC - Consejo Superior de Investigaciones Científicas [Spain] (Serrano 117, 28006 Madrid - Spain)
20
IANCU - Institute of Astronomy [Taiwan] (Taoyuan City 32001, Taiwan - Taiwan)
- NCU - National Central University [Taiwan] (300, Zhongda Road, Zhongli District, Taoyuan City, Taïwan 320 - Taiwan)
21
RSSD - Research and Scientific Support Department, ESTEC (ESTEC, Box 299, NL-2200 AG , Noordwijk, The Netherlands - Netherlands)
- ESTEC - European Space Research and Technology Centre (Keplerlaan 1, 2201 Noordwijk - Netherlands)
- ESA - European Space Agency (France)
22
Operations Department (ESAC) (PO Box 78, 28691 Villanueva de la Canada, Madrid - Spain)
- ESAC - European Space Astronomy Centre (Camino bajo del Castillo, s/n, Urbanización Villafranca del Castillo,, Villanueva de la Cañada, E-28692 Madrid
- Spain)
- ESA - European Space Agency (France)
23
Institut für Datentechnik und Kommunikationsnetze (Hans-Sommer-Straße 66, 38106 Braunschweig
- Germany)
- Technische Universität Braunschweig [Braunschweig] (38092 Braunschweig - Germany)
24
CBK - Space Research Centre of Polish Academy of Sciences (Bartycka 18A, 00-716 Warsaw, Poland - Poland)
- PAN - Polska Akademia Nauk (Poland)
25
CAB - Centro de Astrobiologia [Madrid] (28850 Torrejón de Ardoz, Madrid - Spain)
- CSIC - Consejo Superior de Investigaciones Científicas [Spain] (Serrano 117, 28006 Madrid - Spain)
- INTA - Instituto Nacional de Técnica Aeroespacial ( Torrejón de Ardoz, Madrid - Spain)
26
ISSI - International Space Science Institute [Bern] (Hallerstrasse 6 3012 Bern - Switzerland)
Abstract : The OSIRIS experiment onboard the Rosetta spacecraft currently orbiting comet 67P/Churyumov-Gerasimenko has yielded unprecedented views of a comet's nucleus. We present here the first ever observations of meter-scale fractures on the surface of a comet. Some of these fractures form polygonal networks. We present an initial assessment of their morphology, topology, and regional distribution. Fractures are ubiquitous on the surface of the comet's nucleus. Furthermore, they occur in various settings and show different topologies suggesting numerous formation mechanisms, which include thermal insolation weathering, orbital-induced stresses, and possibly seasonal thermal contraction. However, we conclude that thermal insolation weathering is responsible for creating most of the observed fractures based on their morphology and setting in addition to thermal models that indicate diurnal temperature ranges exceeding 200 K and thermal gradients of ~15 K/min at perihelion are possible. Finally, we suggest that fractures could be a facilitator in surface evolution and long-term erosion.
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Journal articles
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https://hal-insu.archives-ouvertes.fr/insu-01176074
Contributor : Catherine Cardon <>
Submitted on : Saturday, July 11, 2020 - 6:19:52 PM
Last modification on : Wednesday, September 23, 2020 - 4:38:31 AM
Contributor : Catherine Cardon <>
Submitted on : Saturday, July 11, 2020 - 6:19:52 PM
Last modification on : Wednesday, September 23, 2020 - 4:38:31 AM
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Identifiers
- HAL Id : insu-01176074, version 1
- BIBCODE : 2015GeoRL..42.5170E
- DOI : 10.1002/2015GL064500
Collections
UNIV-AMU | UNIV-PARIS-SACLAY | SORBONNE-UNIVERSITE | USPC | SU-SCIENCES | LATMOS | LAM | UNIV-PARIS7 | LESIA | INSU | CNRS | OBSPM | UPMC | OSU-INSTITUT-PYTHEAS | UVSQ | UP-SCIENCES | PSL
Citation
M.R. El-Maarry, N. Thomas, A. Gracia-Berná, R. Marschall, A-T. Auger, et al.. Fractures on comet 67P/Churyumov-Gerasimenko observed by Rosetta/OSIRIS. Geophysical Research Letters, American Geophysical Union, 2015, 42 (13), pp.5170-5178. ⟨10.1002/2015GL064500⟩. ⟨insu-01176074⟩
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