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Member Since 1979
Dave J. Stevenson
California Institute of Technology
AGU Research
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Juno Microwave Radiometer Observations of Europa’s and Ganymede’s Subsurface Ice Shell
JUNO’S MULTI-INSTRUMENT VIEW OF EUROPA, GANYMEDE, AND IO II ORAL
planetary sciences | 14 december 2023
Scott J. Bolton, Zhimeng Zhang, Shannon T. Brown, ...
On June 7, 2021, and September 29, 2022, the NASA Juno spacecraft passed Jupiters Galilean moons, Ganymede, and Europa, respectively. The closest appr...
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Evaluating the Conversion of CO to CH4 in the Jovian Circumplanetary Disk as a Source of Abundant Water Ice in Ganymede and Callisto
GEOLOGY AND GEOPHYSICS OF ACTIVE SATELLITES AND SMALL BODIES POSTER
planetary sciences | 13 december 2023
Teng Ee Yap, David J. Stevenson
Interior structure models of the Jovian moons Ganymede and Callisto suggest they are characterized by water ice-rock ratios around unity. This abundan...
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Europa’s Sub-Surface Ice Observed With The Juno Microwave Radiometer
JUNO’S MULTI-INSTRUMENT VIEW OF EUROPA, GANYMEDE, AND IO I POSTER
planetary sciences | 13 december 2023
Steven Levin, Zhimeng Zhang, Scott J. Bolton, Shan...
Juno flew within 360 km of Europas surface on 29 September, 2022, and the Microwave Radiometer (MWR) mapped part of its ice shell at six frequencies, ...
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Strong resemblance between surface and deep zonal winds inside Jupiter revealed by high-degree gravity moments
GIANT PLANET INTERIORS II ORAL
planetary sciences | 13 december 2023
Hao Cao, Jeremy Bloxham, Ryan S. Park, Burkhard Mi...
Jupiter's atmosphere-interior is a coupled fluid dynamical system strongly influenced by the rapid background rotation. While the visible atmosphere f...
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The inverse density structure within small bodies
JUNO’S MULTI-INSTRUMENT VIEW OF EUROPA, GANYMEDE, AND IO I POSTER
planetary sciences | 13 december 2023
Yoshinori Miyazaki, David J. Stevenson
The recent reanalysis of the Galileo magnetometer data by Khurana et al. (2011) suggested that Io has a high melt fraction layer with >50 km thickn...
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Enhanced Models of the Formation and Evolution of the Sun’s Outer Planets: Implications for Their Internal Structure
GIANT PLANET INTERIORS I POSTER
planetary sciences | 12 december 2023
Jack J. Lissauer, Peter Bodenheimer, David J. Stev...
We present new models of the accretion and subsequent evolution of Saturn and Uranus/Neptune that account for both mixing and unmixing of the five maj...
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Jupiter's high degree gravity moments reveal the deep structure and orientation of the planet's zonal flows
GIANT PLANET INTERIORS I POSTER
planetary sciences | 12 december 2023
Yohai Kaspi, Eli Galanti, Ryan S. Park, Keren Duer...
The atmospheric dynamics of Jupiter are dominated by strong zonal winds engulfing the planet. Since the first gravity measurements of Juno at Jupiter,...
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Bright Na‐Carbonate Exposures Reveal Recent, Widespread Mobilization of Material in Ceres' Shallow Subsurface
JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS
25 july 2023
Nathaniel Stein, Bethany L. Ehlmann, David J. Stev...
Striking exposures of Na‐carbonate‐bearing bright materials are found in Ahuna Mons and the central landforms of Occator and other impa...