Search Publications
Seismic signal from waves on Titan's seas
Lorenz, Ralph D.; Stähler, Simon C.; Panning, Mark P. +4 more
Seismology is the main tool for inferring the deep interior structures of Earth and potentially also of other planetary bodies in the solar system. Terrestrial seismology is influenced by the presence of the ocean-generated microseismic signal, which sets a lower limit on the earthquake detection capabilities but also provides a strong energy sour…
Cassini radar observation of Punga Mare and environs: Bathymetry and composition
Lorenz, R. D.; Lunine, J. I.; Hayes, A. G. +4 more
In January 2015 (fly-by T108), the Cassini radar observed Punga Mare, Titan's northernmost and third-largest sea, in altimetry mode during closest approach. The ground track intercepted a section of the mare and a system of channels and flooded areas connecting Punga to Kraken Mare. We use a processing technique, successfully adopted for Ligeia Ma…
Surface roughness of Titan's hydrocarbon seas
Lorenz, Ralph D.; Cassini Radar Team; Elachi, Charles +6 more
We derive fields of solutions for the surface properties (roughness and permittivity) of the liquid hydrocarbon bodies Ligeia, Kraken and Punga Mare on Titan by applying the Radar Statistical Reconnaissance (RSR) technique to the Cassini RADAR observations in altimeter mode during the northern early summer. At the time of observation, Kraken and L…
Saturn's very axisymmetric magnetic field: No detectable secular variation or tilt
Cao, Hao; Dougherty, Michele K.; Russell, Christopher T. +2 more
Saturn is the only planet in the solar system whose observed magnetic field is highly axisymmetric. At least a small deviation from perfect symmetry is required for a dynamo-generated magnetic field. Analyzing more than six years of magnetometer data obtained by Cassini close to the planet, we show that Saturn's observed field is much more axisymm…