Cassini/Altimeter and Vims Complementarity: Example Using Observations Over the Same Area From Ta and T13 Titan's Flybys
The altimeter mode of the Ku-band RADAR experiment onboard the Cassini-Huygens mission has been designed primarily for the study of Titan's surface topography. Inspired by what is done on the Earth in icy contexts like in the Antarctic, Cassini altimetry data can also be used to retrieve the ra...
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ftoskarbordeaux:oai:oskar-bordeaux.fr:20.500.12278/97278 2023-05-15T13:46:42+02:00 Cassini/Altimeter and Vims Complementarity: Example Using Observations Over the Same Area From Ta and T13 Titan's Flybys CRAPEAU, M. RODRIGUEZ, S. LE MOUELIC, S. PAILLOU, Philippe SOTIN, C. WALL, S. D. THE VIMS SCIENCE TEAM THE RADAR SCIENCE TEAM 2006 https://oskar-bordeaux.fr/handle/20.500.12278/97278 en eng https://oskar-bordeaux.fr/handle/20.500.12278/97278 2006DPS.38.4806C - Bulletin of the American Astronomical Society Planète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] Physique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] Communication dans un congrès avec actes 2006 ftoskarbordeaux 2021-07-13T22:30:38Z The altimeter mode of the Ku-band RADAR experiment onboard the Cassini-Huygens mission has been designed primarily for the study of Titan's surface topography. Inspired by what is done on the Earth in icy contexts like in the Antarctic, Cassini altimetry data can also be used to retrieve the radar reflectivity of Titan's surface and thus, information about its nature. Our first study shows clear contrasts of the radar reflectivity along the altimeter track acquired during the first Titan flyby (Ta). This distinct decrease in radar reflectivity is somewhat correlated with a slight surface height variation. The 13th Titan flyby (T13) provided us VIMS (Visual and Infrared Mapping Spectrometer, operating between 0.3 and 5.1 µm) medium resolution observations of the same region. Infrared I/F along the Ta altimeter track presents a very strong correlation with the computed radar reflectivity. These correlations between infrared I/F and radar reflectivity variations indicate a change in the surface nature and the presence of a clearly defined surface structure under the track. VIMS 2.03/1.27 µm channels ratio transect along the altimeter track also suggests a local enrichment in water ice associated with a smooth depression, maybe witnessing ancient channels. Other/Unknown Material Antarc* Antarctic OSKAR Bordeaux (Open Science Knowledge ARchive) Antarctic The Antarctic Titan ENVELOPE(-68.733,-68.733,-72.083,-72.083) |
institution |
Open Polar |
collection |
OSKAR Bordeaux (Open Science Knowledge ARchive) |
op_collection_id |
ftoskarbordeaux |
language |
English |
topic |
Planète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] Physique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] |
spellingShingle |
Planète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] Physique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] CRAPEAU, M. RODRIGUEZ, S. LE MOUELIC, S. PAILLOU, Philippe SOTIN, C. WALL, S. D. THE VIMS SCIENCE TEAM THE RADAR SCIENCE TEAM Cassini/Altimeter and Vims Complementarity: Example Using Observations Over the Same Area From Ta and T13 Titan's Flybys |
topic_facet |
Planète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] Physique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] |
description |
The altimeter mode of the Ku-band RADAR experiment onboard the Cassini-Huygens mission has been designed primarily for the study of Titan's surface topography. Inspired by what is done on the Earth in icy contexts like in the Antarctic, Cassini altimetry data can also be used to retrieve the radar reflectivity of Titan's surface and thus, information about its nature. Our first study shows clear contrasts of the radar reflectivity along the altimeter track acquired during the first Titan flyby (Ta). This distinct decrease in radar reflectivity is somewhat correlated with a slight surface height variation. The 13th Titan flyby (T13) provided us VIMS (Visual and Infrared Mapping Spectrometer, operating between 0.3 and 5.1 µm) medium resolution observations of the same region. Infrared I/F along the Ta altimeter track presents a very strong correlation with the computed radar reflectivity. These correlations between infrared I/F and radar reflectivity variations indicate a change in the surface nature and the presence of a clearly defined surface structure under the track. VIMS 2.03/1.27 µm channels ratio transect along the altimeter track also suggests a local enrichment in water ice associated with a smooth depression, maybe witnessing ancient channels. |
format |
Other/Unknown Material |
author |
CRAPEAU, M. RODRIGUEZ, S. LE MOUELIC, S. PAILLOU, Philippe SOTIN, C. WALL, S. D. THE VIMS SCIENCE TEAM THE RADAR SCIENCE TEAM |
author_facet |
CRAPEAU, M. RODRIGUEZ, S. LE MOUELIC, S. PAILLOU, Philippe SOTIN, C. WALL, S. D. THE VIMS SCIENCE TEAM THE RADAR SCIENCE TEAM |
author_sort |
CRAPEAU, M. |
title |
Cassini/Altimeter and Vims Complementarity: Example Using Observations Over the Same Area From Ta and T13 Titan's Flybys |
title_short |
Cassini/Altimeter and Vims Complementarity: Example Using Observations Over the Same Area From Ta and T13 Titan's Flybys |
title_full |
Cassini/Altimeter and Vims Complementarity: Example Using Observations Over the Same Area From Ta and T13 Titan's Flybys |
title_fullStr |
Cassini/Altimeter and Vims Complementarity: Example Using Observations Over the Same Area From Ta and T13 Titan's Flybys |
title_full_unstemmed |
Cassini/Altimeter and Vims Complementarity: Example Using Observations Over the Same Area From Ta and T13 Titan's Flybys |
title_sort |
cassini/altimeter and vims complementarity: example using observations over the same area from ta and t13 titan's flybys |
publishDate |
2006 |
url |
https://oskar-bordeaux.fr/handle/20.500.12278/97278 |
long_lat |
ENVELOPE(-68.733,-68.733,-72.083,-72.083) |
geographic |
Antarctic The Antarctic Titan |
geographic_facet |
Antarctic The Antarctic Titan |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
2006DPS.38.4806C - Bulletin of the American Astronomical Society |
op_relation |
https://oskar-bordeaux.fr/handle/20.500.12278/97278 |
_version_ |
1766245107375276032 |