A5101971149- Astro and Planetary Science
- Planetary Science and Exploration
- Geomagnetism and Paleomagnetism Studies
- Historical Astronomy and Related Studies
- Stellar, planetary, and galactic studies
- Geophysics and Gravity Measurements
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Spacecraft and Cryogenic Technologies
- Clay minerals and soil interactions
- Astronomical and nuclear sciences
- Biomarkers in Disease Mechanisms
- High-pressure geophysics and materials
- Astrophysics and Star Formation Studies
- Arsenic contamination and mitigation
- Scientific Research and Discoveries
- Space Exploration and Technology
- Spacecraft Design and Technology
- Medical and Biological Sciences
- Iron oxide chemistry and applications
University of Arizona
2020-2023
Wilfrid Laurier University
2020
Planetary Science Institute
2020
Royal Observatory of Belgium
2013-2016
UCLouvain
2013
Abstract Enceladus's gravity and shape have been explained in terms of a thick isostatic ice shell floating on global ocean, contradiction the thin implied by librations. Here we propose new model minimizing crustal deviatoric stress demonstrate that data predict 38 ± 4 km ocean beneath 23 agreeing with—but independent of—libration data. Isostatic tidal stresses are comparable magnitude. South polar crust is only 7 thick, facilitating opening water conduits enhancing dissipation through...
There is compelling evidence for subsurface water oceans among the three outer Galilean satellites, and an internal magma ocean in innermost moon, Io. Tidal forces from Jupiter periodically deform these bodies, causing heating deformation that, if measured, can probe their interior structures. In addition to Jupiter-raised tides, each moon also raises tides on others. We investigate moon-moon first time moons, show that they cause significant through excitation of high-frequency resonant...
Temperature-dependent kinetic studies of the adsorption critical pollutants onto reactive components in soils and removal technologies provide invaluable rate information mechanistic insight. Using attenuated total internal reflection Fourier transform infrared spectroscopy, we collected situ spectra as a function time, concentration, temperature range 5-50 °C (278-323 K) for arsenate (iAs) dimethylarsinate (DMA) on hematite nanoparticles at pH 7. These experimental data were modeled with...
Abstract The melt zone in the volcanically active satellite Io plays a key role diverse processes such as volcanism, heat transfer, tidal dissipation, and orbital evolution of Galilean satellites Laplace resonance. Information on distribution, degree partial melt, possible existence global magma ocean has been derived from Galileo magnetic induction measurements, volcanic eruption temperatures, Hubble Space Telescope auroral spot observations but is currently inconclusive. Here, we calculate...
Abstract The present ellipsoidal figure of the Moon requires a deformation that is significantly larger than hydrostatic in response to rotational and tidal potentials. This has long been explained as due fossil from time when was closer Earth. Previous studies constraining orbital parameters at established find high orbit eccentricities ( e ≳ 0.2) are required this ancient time, which difficult reconcile with freezing owing expected large heating. We extend previous several ways. First, we...
The Uranus Orbiter and Probe (UOP) has been proposed as the next Flagship-class mission by 2023-2033 Planetary Science Astrobiology Decadal Survey [1]. During its 4-year tour, will address important questions regarding five large icy moons of (Miranda, Ariel, Umbriel, Titania, Oberon): What are their rock-ice ratios? Do they have internal oceans?During orbital motion, rotation synchronous is modified time-varying gravitational torque on flattened shape. non-zero eccentricity causes diurnal...
Following the discovery of several ocean worlds in solar system, and selection Uranus as highest priority objective by Planetary Science Astrobiology Decadal Survey 2023-2032, five largest moons (Miranda, Ariel, Umbriel, Titania Oberon) have been receiving renewed attention they may also harbor a subsurface ocean. We assess how rotation measurements could help confirm internal differentiation bodies detect oceans if any. Because time-varying gravitational torque on flattened shape its...
<p>Tidal dissipation is thought to power volcanism or cryovolcanism on a number of moons, most notably Io and Enceladus. The amount distribution tidal heating within the moon are however still misunderstood, intricately related surface observations like heat flow volcanic activity. From an extensive benchmark between set numerical and semi-analytical models, we show that, in presence subsurface (magma or water) ocean,...