A5053897624- Astro and Planetary Science
- Methane Hydrates and Related Phenomena
- earthquake and tectonic studies
- Planetary Science and Exploration
- Geology and Paleoclimatology Research
- Geomagnetism and Paleomagnetism Studies
- High-pressure geophysics and materials
- Education, Psychology, and Social Research
- Granular flow and fluidized beds
- Herbal Medicine Research Studies
- Complementary and Alternative Medicine Studies
- Geodetic Measurements and Engineering Structures
- Soil, Finite Element Methods
- Drilling and Well Engineering
- Botanical Research and Chemistry
- Geological formations and processes
- Geological Formations and Processes Exploration
Charles University
2019-2021
California Institute of Technology
2021
University of Georgia
2021
Jet Propulsion Laboratory
2021
Goddard Space Flight Center
2021
University of Illinois Chicago
2021
The University of Texas at Austin
2021
Abstract Geophysics-focused missions and improved geophysical data sets are critical for the future exploration of icy ocean worlds. Of particular interest is Galilean moon, Europa, Saturnian moons, Titan Enceladus. These bodies likely have geologically active surfaces may harbor habitable subsurface environments. Placing any candidate signatures life in context requires further knowledge interior these While been mapped, their interiors remain poorly understood. Geophysical approaches such...
Abstract We propose a new model of Enceladus' tiger stripes in which the ice shell is modeled as an elastic system with Coulomb‐type frictional interfaces subjected to periodic tidal loading. find that diurnal tides produce complex pattern stress anomalies, characterized by length scale tens km and peak values exceeding 100 kPa. Friction delays response loading leads asymmetry between compression extension phases. This results additional stress, constant time comparable magnitude cyclic...
Abstract Tidal walking has been proposed as a mechanism inducing lateral offset on preexisting strike‐slip faults Europa by tidal forcing. We test this hypothesis numerically modeling part of Europa's ice shell with an embedded fault. Our model involves two coupled processes: (i) slip at the fault and deformation timescale (ii) thermal evolution tens thousands years. The is characterized Mohr‐Coulomb criterion allowing to determine self‐consistently activation depth On timescale, described...
AbstractWe present preliminary results of a numerical study tidally induced deformation Enceladus’s ice shell containing fissures (Tiger Stripes) in the south polar region (SPR). It is a follow-up Souček et al. (2016), which brings more realistic description faults' behavior. In particular, fault zone described by model effectively visco-elasto-plastic material with yield stress depending on state. Such mimics Coulomb-type friction contact at idealized surfaces....
IntroductionThe smallest Galilean moon Europa is differentiated into an outer ice shell, subsurface ocean, silicate mantle and iron-rich core (J. D. Anderson et al., 1997;  Khurana 1998). Its young surface exhibits a multitude of superposed crosscutting lineaments (Kattenhorn & Hurford, 2009), on some which lateral offset a few kilometres was identified (e.g. Schenk McKinnon, 1989). On Earth, strike-slip motion, thus potentially offset, occurs either through...
AbstractWe propose a new model of Enceladus' tiger stripes in which the ice shell is modeled as an elastic system with frictional interfaces subjected to periodic tidal loading. We find that diurnal tides produce complex pattern stress anomalies, characterized by length scale 10 km and peak values exceeding 100 kPa. Friction slows down response loading, leading asymmetry between compression extension phases. This results additional stress, constant time comparable magnitude cyclic stress....