Global variations in regolith properties on asteroid Vesta from Dawn's low-altitude mapping orbit
We investigate the depth, variability, and history of regolith on asteroid Vesta using data from the Dawn spacecraft. High-resolution (15-20 m pixel-1) Framing Camera images are used to assess the presence of morphologic indicators of a shallow regolith, including the presence of blocks in crater ej...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Denevi, Brett W [verfasserIn] |
|---|
| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Übergeordnetes Werk: |
Enthalten in: Meteoritics & planetary science - Lawrence, Kan. : Allen Press, 1996, 51(2016), 12, Seite 2366-2386 |
|---|---|
| Übergeordnetes Werk: |
volume:51 ; year:2016 ; number:12 ; pages:2366-2386 |
| Links: |
|---|
| DOI / URN: |
10.1111/maps.12729 |
|---|
| Katalog-ID: |
OLC1987557379 |
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| 520 | |a We investigate the depth, variability, and history of regolith on asteroid Vesta using data from the Dawn spacecraft. High-resolution (15-20 m pixel-1) Framing Camera images are used to assess the presence of morphologic indicators of a shallow regolith, including the presence of blocks in crater ejecta, spur-and-gully-type features in crater walls, and the retention of small (<300 m) impact craters. Such features reveal that the broad, regional heterogeneities observed on Vesta in terms of albedo and surface composition extend to the physical properties of the upper ~1 km of the surface. Regions of thin regolith are found within the Rheasilvia basin and at equatorial latitudes from ~0-90°E and ~260-360°E. Craters in these areas that appear to excavate material from beneath the regolith have more diogenitic (Rheasilvia, 0-90°E) and cumulate eucrite (260-360°E) compositions. A region of especially thick regolith, where depths generally exceed 1 km, is found from ~100-240°E and corresponds to heavily cratered, low-albedo surface with a basaltic eucrite composition enriched in carbonaceous chondrite material. The presence of a thick regolith in this area supports the idea that this is an ancient terrain that has accumulated a larger component of exogenic debris. We find evidence for the gardening of crater ejecta toward more howarditic compositions, consistent with regolith mixing being the dominant form of "weathering" on Vesta. | ||
| 700 | 1 | |a Beck, Andrew W |4 oth | |
| 700 | 1 | |a Coman, Ecaterina I |4 oth | |
| 700 | 1 | |a Thomson, Bradley J |4 oth | |
| 700 | 1 | |a Ammannito, Eleonora |4 oth | |
| 700 | 1 | |a Blewett, David T |4 oth | |
| 700 | 1 | |a Sunshine, Jessica M |4 oth | |
| 700 | 1 | |a De Sanctis, Maria Cristina |4 oth | |
| 700 | 1 | |a Li, Jian-Yang |4 oth | |
| 700 | 1 | |a Marchi, Simone |4 oth | |
| 700 | 1 | |a Mittlefehldt, David W |4 oth | |
| 700 | 1 | |a Petro, Noah E |4 oth | |
| 700 | 1 | |a Raymond, Carol A |4 oth | |
| 700 | 1 | |a Russell, Christopher T |4 oth | |
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10.1111/maps.12729 doi PQ20170206 (DE-627)OLC1987557379 (DE-599)GBVOLC1987557379 (PRQ)c1162-53ff9cd60b1ee45da71c50d75f4555eee03db5e26e2bfb5d56ba9dc804267e280 (KEY)0042930920160000051001202366globalvariationsinregolithpropertiesonasteroidvest DE-627 ger DE-627 rakwb eng 520 550 DNB Denevi, Brett W verfasserin aut Global variations in regolith properties on asteroid Vesta from Dawn's low-altitude mapping orbit 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We investigate the depth, variability, and history of regolith on asteroid Vesta using data from the Dawn spacecraft. High-resolution (15-20 m pixel-1) Framing Camera images are used to assess the presence of morphologic indicators of a shallow regolith, including the presence of blocks in crater ejecta, spur-and-gully-type features in crater walls, and the retention of small (<300 m) impact craters. Such features reveal that the broad, regional heterogeneities observed on Vesta in terms of albedo and surface composition extend to the physical properties of the upper ~1 km of the surface. Regions of thin regolith are found within the Rheasilvia basin and at equatorial latitudes from ~0-90°E and ~260-360°E. Craters in these areas that appear to excavate material from beneath the regolith have more diogenitic (Rheasilvia, 0-90°E) and cumulate eucrite (260-360°E) compositions. A region of especially thick regolith, where depths generally exceed 1 km, is found from ~100-240°E and corresponds to heavily cratered, low-albedo surface with a basaltic eucrite composition enriched in carbonaceous chondrite material. The presence of a thick regolith in this area supports the idea that this is an ancient terrain that has accumulated a larger component of exogenic debris. We find evidence for the gardening of crater ejecta toward more howarditic compositions, consistent with regolith mixing being the dominant form of "weathering" on Vesta. Beck, Andrew W oth Coman, Ecaterina I oth Thomson, Bradley J oth Ammannito, Eleonora oth Blewett, David T oth Sunshine, Jessica M oth De Sanctis, Maria Cristina oth Li, Jian-Yang oth Marchi, Simone oth Mittlefehldt, David W oth Petro, Noah E oth Raymond, Carol A oth Russell, Christopher T oth Enthalten in Meteoritics & planetary science Lawrence, Kan. : Allen Press, 1996 51(2016), 12, Seite 2366-2386 (DE-627)193298368 (DE-600)1306943-3 (DE-576)060237333 1086-9379 nnns volume:51 year:2016 number:12 pages:2366-2386 http://dx.doi.org/10.1111/maps.12729 Volltext http://search.proquest.com/docview/1846956874 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_2004 AR 51 2016 12 2366-2386 |
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10.1111/maps.12729 doi PQ20170206 (DE-627)OLC1987557379 (DE-599)GBVOLC1987557379 (PRQ)c1162-53ff9cd60b1ee45da71c50d75f4555eee03db5e26e2bfb5d56ba9dc804267e280 (KEY)0042930920160000051001202366globalvariationsinregolithpropertiesonasteroidvest DE-627 ger DE-627 rakwb eng 520 550 DNB Denevi, Brett W verfasserin aut Global variations in regolith properties on asteroid Vesta from Dawn's low-altitude mapping orbit 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We investigate the depth, variability, and history of regolith on asteroid Vesta using data from the Dawn spacecraft. High-resolution (15-20 m pixel-1) Framing Camera images are used to assess the presence of morphologic indicators of a shallow regolith, including the presence of blocks in crater ejecta, spur-and-gully-type features in crater walls, and the retention of small (<300 m) impact craters. Such features reveal that the broad, regional heterogeneities observed on Vesta in terms of albedo and surface composition extend to the physical properties of the upper ~1 km of the surface. Regions of thin regolith are found within the Rheasilvia basin and at equatorial latitudes from ~0-90°E and ~260-360°E. Craters in these areas that appear to excavate material from beneath the regolith have more diogenitic (Rheasilvia, 0-90°E) and cumulate eucrite (260-360°E) compositions. A region of especially thick regolith, where depths generally exceed 1 km, is found from ~100-240°E and corresponds to heavily cratered, low-albedo surface with a basaltic eucrite composition enriched in carbonaceous chondrite material. The presence of a thick regolith in this area supports the idea that this is an ancient terrain that has accumulated a larger component of exogenic debris. We find evidence for the gardening of crater ejecta toward more howarditic compositions, consistent with regolith mixing being the dominant form of "weathering" on Vesta. Beck, Andrew W oth Coman, Ecaterina I oth Thomson, Bradley J oth Ammannito, Eleonora oth Blewett, David T oth Sunshine, Jessica M oth De Sanctis, Maria Cristina oth Li, Jian-Yang oth Marchi, Simone oth Mittlefehldt, David W oth Petro, Noah E oth Raymond, Carol A oth Russell, Christopher T oth Enthalten in Meteoritics & planetary science Lawrence, Kan. : Allen Press, 1996 51(2016), 12, Seite 2366-2386 (DE-627)193298368 (DE-600)1306943-3 (DE-576)060237333 1086-9379 nnns volume:51 year:2016 number:12 pages:2366-2386 http://dx.doi.org/10.1111/maps.12729 Volltext http://search.proquest.com/docview/1846956874 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_2004 AR 51 2016 12 2366-2386 |
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10.1111/maps.12729 doi PQ20170206 (DE-627)OLC1987557379 (DE-599)GBVOLC1987557379 (PRQ)c1162-53ff9cd60b1ee45da71c50d75f4555eee03db5e26e2bfb5d56ba9dc804267e280 (KEY)0042930920160000051001202366globalvariationsinregolithpropertiesonasteroidvest DE-627 ger DE-627 rakwb eng 520 550 DNB Denevi, Brett W verfasserin aut Global variations in regolith properties on asteroid Vesta from Dawn's low-altitude mapping orbit 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We investigate the depth, variability, and history of regolith on asteroid Vesta using data from the Dawn spacecraft. High-resolution (15-20 m pixel-1) Framing Camera images are used to assess the presence of morphologic indicators of a shallow regolith, including the presence of blocks in crater ejecta, spur-and-gully-type features in crater walls, and the retention of small (<300 m) impact craters. Such features reveal that the broad, regional heterogeneities observed on Vesta in terms of albedo and surface composition extend to the physical properties of the upper ~1 km of the surface. Regions of thin regolith are found within the Rheasilvia basin and at equatorial latitudes from ~0-90°E and ~260-360°E. Craters in these areas that appear to excavate material from beneath the regolith have more diogenitic (Rheasilvia, 0-90°E) and cumulate eucrite (260-360°E) compositions. A region of especially thick regolith, where depths generally exceed 1 km, is found from ~100-240°E and corresponds to heavily cratered, low-albedo surface with a basaltic eucrite composition enriched in carbonaceous chondrite material. The presence of a thick regolith in this area supports the idea that this is an ancient terrain that has accumulated a larger component of exogenic debris. We find evidence for the gardening of crater ejecta toward more howarditic compositions, consistent with regolith mixing being the dominant form of "weathering" on Vesta. Beck, Andrew W oth Coman, Ecaterina I oth Thomson, Bradley J oth Ammannito, Eleonora oth Blewett, David T oth Sunshine, Jessica M oth De Sanctis, Maria Cristina oth Li, Jian-Yang oth Marchi, Simone oth Mittlefehldt, David W oth Petro, Noah E oth Raymond, Carol A oth Russell, Christopher T oth Enthalten in Meteoritics & planetary science Lawrence, Kan. : Allen Press, 1996 51(2016), 12, Seite 2366-2386 (DE-627)193298368 (DE-600)1306943-3 (DE-576)060237333 1086-9379 nnns volume:51 year:2016 number:12 pages:2366-2386 http://dx.doi.org/10.1111/maps.12729 Volltext http://search.proquest.com/docview/1846956874 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_2004 AR 51 2016 12 2366-2386 |
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10.1111/maps.12729 doi PQ20170206 (DE-627)OLC1987557379 (DE-599)GBVOLC1987557379 (PRQ)c1162-53ff9cd60b1ee45da71c50d75f4555eee03db5e26e2bfb5d56ba9dc804267e280 (KEY)0042930920160000051001202366globalvariationsinregolithpropertiesonasteroidvest DE-627 ger DE-627 rakwb eng 520 550 DNB Denevi, Brett W verfasserin aut Global variations in regolith properties on asteroid Vesta from Dawn's low-altitude mapping orbit 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We investigate the depth, variability, and history of regolith on asteroid Vesta using data from the Dawn spacecraft. High-resolution (15-20 m pixel-1) Framing Camera images are used to assess the presence of morphologic indicators of a shallow regolith, including the presence of blocks in crater ejecta, spur-and-gully-type features in crater walls, and the retention of small (<300 m) impact craters. Such features reveal that the broad, regional heterogeneities observed on Vesta in terms of albedo and surface composition extend to the physical properties of the upper ~1 km of the surface. Regions of thin regolith are found within the Rheasilvia basin and at equatorial latitudes from ~0-90°E and ~260-360°E. Craters in these areas that appear to excavate material from beneath the regolith have more diogenitic (Rheasilvia, 0-90°E) and cumulate eucrite (260-360°E) compositions. A region of especially thick regolith, where depths generally exceed 1 km, is found from ~100-240°E and corresponds to heavily cratered, low-albedo surface with a basaltic eucrite composition enriched in carbonaceous chondrite material. The presence of a thick regolith in this area supports the idea that this is an ancient terrain that has accumulated a larger component of exogenic debris. We find evidence for the gardening of crater ejecta toward more howarditic compositions, consistent with regolith mixing being the dominant form of "weathering" on Vesta. Beck, Andrew W oth Coman, Ecaterina I oth Thomson, Bradley J oth Ammannito, Eleonora oth Blewett, David T oth Sunshine, Jessica M oth De Sanctis, Maria Cristina oth Li, Jian-Yang oth Marchi, Simone oth Mittlefehldt, David W oth Petro, Noah E oth Raymond, Carol A oth Russell, Christopher T oth Enthalten in Meteoritics & planetary science Lawrence, Kan. : Allen Press, 1996 51(2016), 12, Seite 2366-2386 (DE-627)193298368 (DE-600)1306943-3 (DE-576)060237333 1086-9379 nnns volume:51 year:2016 number:12 pages:2366-2386 http://dx.doi.org/10.1111/maps.12729 Volltext http://search.proquest.com/docview/1846956874 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_2004 AR 51 2016 12 2366-2386 |
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10.1111/maps.12729 doi PQ20170206 (DE-627)OLC1987557379 (DE-599)GBVOLC1987557379 (PRQ)c1162-53ff9cd60b1ee45da71c50d75f4555eee03db5e26e2bfb5d56ba9dc804267e280 (KEY)0042930920160000051001202366globalvariationsinregolithpropertiesonasteroidvest DE-627 ger DE-627 rakwb eng 520 550 DNB Denevi, Brett W verfasserin aut Global variations in regolith properties on asteroid Vesta from Dawn's low-altitude mapping orbit 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We investigate the depth, variability, and history of regolith on asteroid Vesta using data from the Dawn spacecraft. High-resolution (15-20 m pixel-1) Framing Camera images are used to assess the presence of morphologic indicators of a shallow regolith, including the presence of blocks in crater ejecta, spur-and-gully-type features in crater walls, and the retention of small (<300 m) impact craters. Such features reveal that the broad, regional heterogeneities observed on Vesta in terms of albedo and surface composition extend to the physical properties of the upper ~1 km of the surface. Regions of thin regolith are found within the Rheasilvia basin and at equatorial latitudes from ~0-90°E and ~260-360°E. Craters in these areas that appear to excavate material from beneath the regolith have more diogenitic (Rheasilvia, 0-90°E) and cumulate eucrite (260-360°E) compositions. A region of especially thick regolith, where depths generally exceed 1 km, is found from ~100-240°E and corresponds to heavily cratered, low-albedo surface with a basaltic eucrite composition enriched in carbonaceous chondrite material. The presence of a thick regolith in this area supports the idea that this is an ancient terrain that has accumulated a larger component of exogenic debris. We find evidence for the gardening of crater ejecta toward more howarditic compositions, consistent with regolith mixing being the dominant form of "weathering" on Vesta. Beck, Andrew W oth Coman, Ecaterina I oth Thomson, Bradley J oth Ammannito, Eleonora oth Blewett, David T oth Sunshine, Jessica M oth De Sanctis, Maria Cristina oth Li, Jian-Yang oth Marchi, Simone oth Mittlefehldt, David W oth Petro, Noah E oth Raymond, Carol A oth Russell, Christopher T oth Enthalten in Meteoritics & planetary science Lawrence, Kan. : Allen Press, 1996 51(2016), 12, Seite 2366-2386 (DE-627)193298368 (DE-600)1306943-3 (DE-576)060237333 1086-9379 nnns volume:51 year:2016 number:12 pages:2366-2386 http://dx.doi.org/10.1111/maps.12729 Volltext http://search.proquest.com/docview/1846956874 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_2004 AR 51 2016 12 2366-2386 |
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Denevi, Brett W @@aut@@ Beck, Andrew W @@oth@@ Coman, Ecaterina I @@oth@@ Thomson, Bradley J @@oth@@ Ammannito, Eleonora @@oth@@ Blewett, David T @@oth@@ Sunshine, Jessica M @@oth@@ De Sanctis, Maria Cristina @@oth@@ Li, Jian-Yang @@oth@@ Marchi, Simone @@oth@@ Mittlefehldt, David W @@oth@@ Petro, Noah E @@oth@@ Raymond, Carol A @@oth@@ Russell, Christopher T @@oth@@ |
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Global variations in regolith properties on asteroid Vesta from Dawn's low-altitude mapping orbit |
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global variations in regolith properties on asteroid vesta from dawn's low-altitude mapping orbit |
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Global variations in regolith properties on asteroid Vesta from Dawn's low-altitude mapping orbit |
| abstract |
We investigate the depth, variability, and history of regolith on asteroid Vesta using data from the Dawn spacecraft. High-resolution (15-20 m pixel-1) Framing Camera images are used to assess the presence of morphologic indicators of a shallow regolith, including the presence of blocks in crater ejecta, spur-and-gully-type features in crater walls, and the retention of small (<300 m) impact craters. Such features reveal that the broad, regional heterogeneities observed on Vesta in terms of albedo and surface composition extend to the physical properties of the upper ~1 km of the surface. Regions of thin regolith are found within the Rheasilvia basin and at equatorial latitudes from ~0-90°E and ~260-360°E. Craters in these areas that appear to excavate material from beneath the regolith have more diogenitic (Rheasilvia, 0-90°E) and cumulate eucrite (260-360°E) compositions. A region of especially thick regolith, where depths generally exceed 1 km, is found from ~100-240°E and corresponds to heavily cratered, low-albedo surface with a basaltic eucrite composition enriched in carbonaceous chondrite material. The presence of a thick regolith in this area supports the idea that this is an ancient terrain that has accumulated a larger component of exogenic debris. We find evidence for the gardening of crater ejecta toward more howarditic compositions, consistent with regolith mixing being the dominant form of "weathering" on Vesta. |
| abstractGer |
We investigate the depth, variability, and history of regolith on asteroid Vesta using data from the Dawn spacecraft. High-resolution (15-20 m pixel-1) Framing Camera images are used to assess the presence of morphologic indicators of a shallow regolith, including the presence of blocks in crater ejecta, spur-and-gully-type features in crater walls, and the retention of small (<300 m) impact craters. Such features reveal that the broad, regional heterogeneities observed on Vesta in terms of albedo and surface composition extend to the physical properties of the upper ~1 km of the surface. Regions of thin regolith are found within the Rheasilvia basin and at equatorial latitudes from ~0-90°E and ~260-360°E. Craters in these areas that appear to excavate material from beneath the regolith have more diogenitic (Rheasilvia, 0-90°E) and cumulate eucrite (260-360°E) compositions. A region of especially thick regolith, where depths generally exceed 1 km, is found from ~100-240°E and corresponds to heavily cratered, low-albedo surface with a basaltic eucrite composition enriched in carbonaceous chondrite material. The presence of a thick regolith in this area supports the idea that this is an ancient terrain that has accumulated a larger component of exogenic debris. We find evidence for the gardening of crater ejecta toward more howarditic compositions, consistent with regolith mixing being the dominant form of "weathering" on Vesta. |
| abstract_unstemmed |
We investigate the depth, variability, and history of regolith on asteroid Vesta using data from the Dawn spacecraft. High-resolution (15-20 m pixel-1) Framing Camera images are used to assess the presence of morphologic indicators of a shallow regolith, including the presence of blocks in crater ejecta, spur-and-gully-type features in crater walls, and the retention of small (<300 m) impact craters. Such features reveal that the broad, regional heterogeneities observed on Vesta in terms of albedo and surface composition extend to the physical properties of the upper ~1 km of the surface. Regions of thin regolith are found within the Rheasilvia basin and at equatorial latitudes from ~0-90°E and ~260-360°E. Craters in these areas that appear to excavate material from beneath the regolith have more diogenitic (Rheasilvia, 0-90°E) and cumulate eucrite (260-360°E) compositions. A region of especially thick regolith, where depths generally exceed 1 km, is found from ~100-240°E and corresponds to heavily cratered, low-albedo surface with a basaltic eucrite composition enriched in carbonaceous chondrite material. The presence of a thick regolith in this area supports the idea that this is an ancient terrain that has accumulated a larger component of exogenic debris. We find evidence for the gardening of crater ejecta toward more howarditic compositions, consistent with regolith mixing being the dominant form of "weathering" on Vesta. |
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Global variations in regolith properties on asteroid Vesta from Dawn's low-altitude mapping orbit |
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Beck, Andrew W Coman, Ecaterina I Thomson, Bradley J Ammannito, Eleonora Blewett, David T Sunshine, Jessica M De Sanctis, Maria Cristina Li, Jian-Yang Marchi, Simone Mittlefehldt, David W Petro, Noah E Raymond, Carol A Russell, Christopher T |
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