Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements
The surface of Enceladus consists almost completely of water ice. As the band depths of water ice absorptions are sensitive to the size of particles, absorptions can be used to map variations of icy particles across the surface. The Visual and Infrared Mapping Spectrometer (VIMS) observed Enceladus...
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ftdlr:oai:elib.dlr.de:52917 2023-05-15T18:22:57+02:00 Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements Jaumann, R. Stephan, K. Hansen, G. B. Clark, R. N. Buratti, B. J. Brown, R. H. Baines, K. H. Newman, S. F. Bellucci, G. Filacchione, G. Coradini, A. Cruikshank, D. P. Griffith, C. A. Hibbitts, C. A. McCord, T. B. Nelson, R. M. Nicholson, P. D. Sotin, C. Wagner, R. 2008 http://elib.dlr.de/52917/ unknown Elsevier Jaumann, R. und Stephan, K. und Hansen, G. B. und Clark, R. N. und Buratti, B. J. und Brown, R. H. und Baines, K. H. und Newman, S. F. und Bellucci, G. und Filacchione, G. und Coradini, A. und Cruikshank, D. P. und Griffith, C. A. und Hibbitts, C. A. und McCord, T. B. und Nelson, R. M. und Nicholson, P. D. und Sotin, C. und Wagner, R. (2008) Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements. Icarus: International Journal of Solar System Studies, 193 (2), Seiten 407-419. Elsevier. DOI:10.1016/j.icarus.2007.09.013. Institut für Planetenforschung Zeitschriftenbeitrag PeerReviewed 2008 ftdlr https://doi.org/10.1016/j.icarus.2007.09.013 2016-03-28T20:42:19Z The surface of Enceladus consists almost completely of water ice. As the band depths of water ice absorptions are sensitive to the size of particles, absorptions can be used to map variations of icy particles across the surface. The Visual and Infrared Mapping Spectrometer (VIMS) observed Enceladus with a high spatial resolution during three Cassini flybys in 2005 (orbits EN 003, EN 004 and EN 011). Based on these data we measured the band depths of water ice absorptions at 1.04, 1.25, 1.5, and 2 μm. These band depths were compared to water ice models that represent theoretically calculated reflectance spectra for a range of particle diameters between 2 μm and 1 mm. The agreement between the experimental (VIMS) and model values supports the assumption that pure water ice characterizes the surface of Enceladus and therefore that variations in band depth correspond to variations in water ice particle diameters. Our measurements show that the particle diameter of water ice increases toward younger tectonically altered surface units with the largest particles exposed in relatively “fresh” surface material. The smallest particles were generally found in old densely cratered terrains. The largest particles (not, vert, similar0.2 mm) are concentrated in the so called “tiger stripes” at the south pole. In general, the particle diameters are strongly correlated with geologic features and surface ages, indicating a stratigraphic evolution of the surface that is caused by cryovolcanic resurfacing and impact gardening. Other Non-Article Part of Journal/Newspaper South pole German Aerospace Center: elib - DLR electronic library South Pole Icarus 193 2 407 419 |
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Open Polar |
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German Aerospace Center: elib - DLR electronic library |
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ftdlr |
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unknown |
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Institut für Planetenforschung |
spellingShingle |
Institut für Planetenforschung Jaumann, R. Stephan, K. Hansen, G. B. Clark, R. N. Buratti, B. J. Brown, R. H. Baines, K. H. Newman, S. F. Bellucci, G. Filacchione, G. Coradini, A. Cruikshank, D. P. Griffith, C. A. Hibbitts, C. A. McCord, T. B. Nelson, R. M. Nicholson, P. D. Sotin, C. Wagner, R. Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements |
topic_facet |
Institut für Planetenforschung |
description |
The surface of Enceladus consists almost completely of water ice. As the band depths of water ice absorptions are sensitive to the size of particles, absorptions can be used to map variations of icy particles across the surface. The Visual and Infrared Mapping Spectrometer (VIMS) observed Enceladus with a high spatial resolution during three Cassini flybys in 2005 (orbits EN 003, EN 004 and EN 011). Based on these data we measured the band depths of water ice absorptions at 1.04, 1.25, 1.5, and 2 μm. These band depths were compared to water ice models that represent theoretically calculated reflectance spectra for a range of particle diameters between 2 μm and 1 mm. The agreement between the experimental (VIMS) and model values supports the assumption that pure water ice characterizes the surface of Enceladus and therefore that variations in band depth correspond to variations in water ice particle diameters. Our measurements show that the particle diameter of water ice increases toward younger tectonically altered surface units with the largest particles exposed in relatively “fresh” surface material. The smallest particles were generally found in old densely cratered terrains. The largest particles (not, vert, similar0.2 mm) are concentrated in the so called “tiger stripes” at the south pole. In general, the particle diameters are strongly correlated with geologic features and surface ages, indicating a stratigraphic evolution of the surface that is caused by cryovolcanic resurfacing and impact gardening. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Jaumann, R. Stephan, K. Hansen, G. B. Clark, R. N. Buratti, B. J. Brown, R. H. Baines, K. H. Newman, S. F. Bellucci, G. Filacchione, G. Coradini, A. Cruikshank, D. P. Griffith, C. A. Hibbitts, C. A. McCord, T. B. Nelson, R. M. Nicholson, P. D. Sotin, C. Wagner, R. |
author_facet |
Jaumann, R. Stephan, K. Hansen, G. B. Clark, R. N. Buratti, B. J. Brown, R. H. Baines, K. H. Newman, S. F. Bellucci, G. Filacchione, G. Coradini, A. Cruikshank, D. P. Griffith, C. A. Hibbitts, C. A. McCord, T. B. Nelson, R. M. Nicholson, P. D. Sotin, C. Wagner, R. |
author_sort |
Jaumann, R. |
title |
Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements |
title_short |
Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements |
title_full |
Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements |
title_fullStr |
Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements |
title_full_unstemmed |
Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements |
title_sort |
distribution of icy particles across enceladus' surface as derived from cassini-vims measurements |
publisher |
Elsevier |
publishDate |
2008 |
url |
http://elib.dlr.de/52917/ |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
Jaumann, R. und Stephan, K. und Hansen, G. B. und Clark, R. N. und Buratti, B. J. und Brown, R. H. und Baines, K. H. und Newman, S. F. und Bellucci, G. und Filacchione, G. und Coradini, A. und Cruikshank, D. P. und Griffith, C. A. und Hibbitts, C. A. und McCord, T. B. und Nelson, R. M. und Nicholson, P. D. und Sotin, C. und Wagner, R. (2008) Distribution of icy particles across Enceladus' surface as derived from Cassini-VIMS measurements. Icarus: International Journal of Solar System Studies, 193 (2), Seiten 407-419. Elsevier. DOI:10.1016/j.icarus.2007.09.013. |
op_doi |
https://doi.org/10.1016/j.icarus.2007.09.013 |
container_title |
Icarus |
container_volume |
193 |
container_issue |
2 |
container_start_page |
407 |
op_container_end_page |
419 |
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1766202355217334272 |