Dataset Persistent ID
|
doi:10.35003/SMHEIM |
Publication Date
|
2020-11-10 |
Title
|
Replication Data for: The Bathymetry of Moray Sinus at Titan's Kraken Mare
|
Author
|
Valerio Poggiali (Cornell Center for Astrophysics and Planetary Science, Cornell University) - ORCID: 0000-0003-1053-3225
Hayes, A.G. (Cornell Center for Astrophysics and Planetary Science, Cornell University)
Mastrogiuseppe, M. (Università di Roma La Sapienza)
Le Gall, A. (UVSQ Université Paris‐Saclay, Sorbonne Université)
Lalich, D. (Cornell Center for Astrophysics and Planetary Science, Cornell University)
Gómez-Leal, I. (Cornell Center for Astrophysics and Planetary Science, Cornell University)
Lunine, J.I. (Cornell Center for Astrophysics and Planetary Science, Cornell University)
|
Contact
|
Use email button above to contact.
Poggiali, Valerio (Cornell Center for Astrophysics and Planetary Science, Cornell University)
|
Description
|
Moray Sinus is an estuary located at the northern end of Titan’s Kraken Mare. The Cassini RADAR altimeter acquired three segments over this mare during the T104 flyby of Titan, on August 21st, 2014. Herein, we present a detailed analysis of the received echoes. Some of these waveforms exhibit a reflection from the seafloor, from up to 85 (−18, +28) m of depth (1σ error). Monte-Carlo simulations have been performed in order to assess the most probable values and estimation errors for the seafloor depth. Insights from this study, featuring the synergic use of the synthetic aperture radar images coupled to the altimetry and passive radiometry datasets, have been used to constrain the dielectric properties (i.e., absorptivity of the liquid) and roughness of this region of Kraken Mare. The resulting Ku-band specific attenuation of the liquid is 17 ± 3 dB/μs, corresponding to a loss tangent of (4.6 ± 0.9) ×10−5, which is very similar to the loss tangent estimated at Ligeia Mare. The data in hand do not permit us to discern the most likely explanation for the lack of a seafloor reflection from the main body of Kraken Mare: either a very deep sea or a more absorbing liquid composition. However, if the main body of Kraken Mare is characterized by an absorption similar to Moray Sinus, then based on models of the response to altimetry mode observations we can conclude that it exceeds 100 meters of depth, which is also compatible with radiometry observations.
|
Subject
|
Astronomy and Astrophysics
|
Keyword
|
Titan Kraken Mare (T104 Titan flyby) (Moray Sinus)
Cassini radar altimeter data (Bathymetry)
Composition of sea (Radar absorptivity data)
|
Topic Classification
|
Astronomy (Bathymetrical and Monte Carlo simulated data)
|
Related Publication
|
V. Poggiali et al. (2020), The Bathymetry of Moray Sinus at Titan's Kraken Mare, JGR Planets, Volume125, Issue12, https://doi.org/10.1029/2020JE006558 https://doi.org/10.1029/2020JE006558
|
Language
|
English
|
Producer
|
Valerio Poggiali (Cornell Center for Astrophysics and Planetary Science, Cornell University)
|
Grant Information
|
NASA CDAP program: NNX15AH10G
|
Distributor
|
NASA Planetary Data System https://pds-imaging.jpl.nasa.gov/data/cassini/cassini_orbiter
TR170-DB (Freie Universität Berlin)
TRR170-DB (Freie Universität Berlin) https://planetary-data-portal.org/privateurl.xhtml?token=217e8587-80ae-404f-9664-e7ba43adfba0
|
Depositor
|
Lehmann, Elfrun
|
Deposit Date
|
2020-10-01
|
Kind of Data
|
Astronomy, bathymetry, Monte Carlo simulations
|