... calderas geographically controlled by Hellas-concentric faults. Pityusa Patera hosts folded deposits, possibly pyroclastics emplaced and shortened during patera formation as a piston-type caldera. Around 3. ... chamber and its subsequent partial evacuation forms Amphitrites Patera as a caldera on a ~1.5 km ... represent partially leached pyroclastic deposits resulting from this patera formation. Between 3.7 and 3.6 Ga, the northern slope of Amphitrites Patera is heavily dissected by low-viscosity flow processes ...
Tópico(s): Space Science and Extraterrestrial Life
2021 - Elsevier BV | Icarus
Katherine de Kleer, Michael F. Skrutskie, Jarron Leisenring, A. G. Davies, Albert Conrad, Imke de Pater, Andrew Resnick, Vanessa P. Bailey, Denis Defrère, Philip M. Hinz, Andrew Skemer, Eckhart Spalding, A. Vaz, C. Veillet, C. E. Woodward,
... persistently active volcano in the Solar System, Loki Patera. The interior of this volcanic, caldera-like feature ... The temperature gradient seen across areas of the patera indicates a systematic resurfacing process, which has been ... has indicated that the resurfacing progressed around the patera in an anti-clockwise direction at a rate ... a cyclically overturning lava lake contained within the patera. However, spacecraft and telescope observations have been unable to map the emission from the entire patera floor at sufficient spatial resolution to establish the ...
Tópico(s): Planetary Science and Exploration
2017 - Nature Portfolio | Nature
R. R. Howell, C. E. Landis, R. M. C. Lopes,
... we analyze Voyager and Galileo images of Loki Patera. Loki is the largest caldera in the Solar ... a lava lake crust, periodically sweeps around Loki Patera. Photometry from Voyager I and II violet and ... and basalt. The dark western portion of the patera has the color of bare basalt. Assuming such ... I images most of the rest of the patera appears to be covered with a background of ... Voyager I and II. The surface of the patera is also dotted by numerous small bright areas ... up to 100%. Darker regions adjacent to the patera, such as the "southwest overflow", are a mixture ...
Tópico(s): Space Exploration and Technology
2013 - Elsevier BV | Icarus
Daniel R. Allen, J. Radebaugh, Denise C. Stephens,
... style of three faint hot spots, Pillan, Wayland Patera, and Loki Patera. We found a maximum color temperature of 1130 ± ... 289 K and 1387 ± 287 K for Wayland Patera and Loki Patera, respectively. These temperatures are suggestive of basaltic lava ... K, and 1017 ± 177 K for Pillan, Wayland Patera, and Loki Patera, respectively. Pillan showed constant thermal output within error ... caused a more dramatic decrease in emission. Wayland Patera's intensity decreased over the three eclipse observations, ... flow or decreasing effusion rate. Intensities at Loki Patera over the course of the observations varied, consistent ...
Tópico(s): Isotope Analysis in Ecology
2013 - Elsevier BV | Icarus
... especially MOLA topography, reveal important characteristics of Alba Patera that were either unknown or poorly resolved in ... lava flows within a broad region around Alba Patera permit division of this area into two major ... related to different episodes of volcanism at Alba Patera: a low‐lying apron of lava flows that ... The final stages of volcanic activity at Alba Patera were concentrated in the summit area, forming a ... valley networks on the northern flanks of Alba Patera have been interpreted to be evidence of easily ...
Tópico(s): Geology and Paleoclimatology Research
2006 - American Geophysical Union | Journal of Geophysical Research Atmospheres
V. C. Gulick, Victor R. Baker,
... six Martian volcanoes, Ceraunius Tholus, Hecates Tholus, Alba Patera, Hadriaca Patera, Apollinaris Patera, and Tyrrhena Patera, indicate that fluvial processes were the dominant influence ... Fluvial valleys are especially well developed on Alba Patera, Ceraunius Tholus, and Hecates Tholus. These valleys are ... in the downstream direction. Lava channels on Alba Patera are located on the crest of lava flows ... northern flank of Ceraunius Tholus. Valleys dissecting Apollinaris Patera, Hadriaca Patera, and Tyrrhena Patera appear to have ...
Tópico(s): Maritime and Coastal Archaeology
1990 - American Geophysical Union | Journal of Geophysical Research Atmospheres
... the Reasons Why They Find Anatomy Difficult? Eleni Patera B.Sc., M.Sc., F.H.E.A., Corresponding Author E.Patera@bham.ac.uk orcid.org/0000-0001-6154- ... Birmingham, Birmingham, United Kingdom Correspondence to: Ms. Eleni Patera, Department of Anatomy, Birmingham University Medical School, University ... Birmingham B15 2TT United Kingdom. E-mail: E.Patera@bham.ac.ukSearch for more papers by this author Eleni Patera B.Sc., M.Sc., F.H.E.A., Corresponding Author E.Patera@bham.ac.uk orcid.org/0000-0001-6154- ... Birmingham, Birmingham, United Kingdom Correspondence to: Ms. Eleni Patera, Department of Anatomy, Birmingham University Medical School, University ...
Tópico(s): Surgical Simulation and Training
2021 - Wiley | Anatomical Sciences Education
D. A. Williams, R. Greeley, Stéphanie C. Werner, Greg Michael, D. A. Crown, G. Neukum, J. Raitala,
... High Resolution Stereo Camera images of the Tyrrhena Patera volcano to assign cratering model ages to material ... three key intervals of major activity at Tyrrhena Patera: (1) formation of the volcanic edifice in the ... Ga) and coincident with the formation of Hadriaca Patera (∼3.9 Ga); (2) modification of the edifice ... Ga. Early‐ to mid‐Hesperian activity on Tyrrhena Patera is consistent with similar activity on Hadriaca Patera at ∼3.3–3.7 Ga. The most recent dateable event on Tyrrhena Patera is modification on the upper shield, caldera rille, ...
Tópico(s): Geology and Paleoclimatology Research
2008 - American Geophysical Union | Journal of Geophysical Research Atmospheres
M. K. Bunte, D. A. Williams, R. Greeley,
... floors, flows, and diffuse deposits. The flows and patera floors are similar, but are subdivided based on ... one along the western scarp of the Zal Patera volcano and one at the Rustam Patera volcano (name submitted to IAU). A third hotspot at the nearby At'am Patera volcano (name submitted to IAU) is the source ... Zal Mons. The western bounding scarp of Zal Patera is the location of a fissure vent that ... multiple silicate lava flows. The floor of Zal Patera has been partially resurfaced by dark lava flows, ...
Tópico(s): Geology and Paleoclimatology Research
2008 - Elsevier BV | Icarus
Katherine de Kleer, Imke de Pater,
Loki Patera is one of the most dramatically time-variable volcanic features on Io, exhibiting episodic brightening events every ... provides constraints on models for activity at Loki Patera. The Matson et al. (2006) model for Loki Patera as an overturning basaltic magma sea is adapted ... the overturn front appears to propagate around the patera in the clockwise direction, opposite to what has ... resurfacing waves as well as portions of the patera that are active even after the nominal bright ... The measured intensities are anomalously low when Loki Patera is viewed at high emission angles, suggestive of ...
Tópico(s): Geophysics and Gravity Measurements
2017 - Elsevier BV | Icarus
Imke de Pater, Katherine de Kleer, A. G. Davies, Máté Ádámkovics,
We present observations of Io's Loki Patera taken with the 10-m Keck telescopes between 1998 and 2016. Adding these data to those published by Rathbun and Spencer (2006) and ... 3.5–3.8 µm emission from Loki Patera over almost 3 decades. Data presented here contain ... mostly cool lava crust over almost the entire patera floor, with a relatively small hotter component making ... previous observations. The 30-year timeline of Loki Patera revealed that, after an apparent cessation of, or change in, brightening events in 2002, Loki Patera became active again in 2009. The more recent ...
Tópico(s): Geophysics and Gravity Measurements
2017 - Elsevier BV | Icarus
Imke de Pater, A. G. Davies, Franck Marchis,
... four energetic volcanic eruptions on Io: at Tupan Patera on UT 8 March 2003; Tung Yo Patera on UT 28 May 2004; Sui Jen Patera on UT 30 May 2004; and south of Babbar Patera on UT 31 May 2005. The Tung Yo, ... eruption style. Model fits to the Sui Jen Patera data are strongly suggestive of lava fountaining, although ... with a large "outburst" eruption. Activity at Tupan Patera suggests that the entire floor of the patera may have been resurfaced with silicate lava in ...
Tópico(s): Stellar, planetary, and galactic studies
2016 - Elsevier BV | Icarus
... the summit region and east margin of Hadriaca Patera, one of the Martian volcanoes designated highland paterae. MTM -30262 quadrangle includes volcanic deposits from Hadriaca Patera and Tyrrhena Patera (summit northeast of map area) and floor deposits ... quadrangle is centered on the caldera of Hadriaca Patera. The highland paterae are among the oldest, central- ... Viking Orbiter images complements volcanological studies of Hadriaca Patera, geologic investigations of the other highland paterae, and ... of the summit caldera and flanks of Hadriaca Patera is essential to determine the types of volcanic ...
Tópico(s): Space Exploration and Technology
2007 - United States Geological Survey | Scientific investigations map
B. Cailleau, Thomas R. Walter, P. Janle, Ernst Hauber,
... to the northern side of Tharsis, is Alba Patera, one of the largest volcanoes in the planetary ... W to NW–SE regional extension at Alba Patera. To assess the influence of regional and local ... km in lateral extent and centred under Alba Patera, we reproduced the radial pattern of dike swarms ... of dike injection. During the evolution of Alba Patera, however, local updoming controlled the dike pattern, supporting the idea of a hotspot under Alba Patera. The well-expressed dike geometry and characteristics of ...
Tópico(s): Geology and Paleoclimatology Research
2005 - Elsevier BV | Icarus
Imke de Pater, A. G. Davies, Máté Ádámkovics, David R. Ciardi,
... faded. The most energetic eruption was at Rarog Patera, at a location near 305°W, 42°S; ... 310°W and ∼57°S, close to Heno Patera. Total radiant fluxes at Rarog Patera on August 15 were of order ∼500 GW/ ... thermal emission of nearly 8 TW. At Heno Patera the 4-μm flux measured ∼250 GW/sr/ ... no older than 4–5 min at Rarog Patera and a few hours at Heno Patera. The model fits suggest that in both locations ...
Tópico(s): Solar and Space Plasma Dynamics
2014 - Elsevier BV | Icarus
D. A. Williams, R. Greeley, W. Zuschneid, Stéphanie C. Werner, G. Neukum, D. A. Crown, T. K. P. Gregg, K. Gwinner, J. Raitala,
High Resolution Stereo Camera (HRSC) images of Hadriaca Patera, Mars, in combination with Mars Orbiter Camera (MOC), ... a complex formation and erosional history at Hadriaca Patera, in which volcanic, fluvial, and aeolian processes were ... counts and associated model ages suggest that Hadriaca Patera formed from early shield‐building volcanic (likely explosive ... The most recent dateable geologic activity on Hadriaca Patera includes caldera resurfacing by some process (most likely ... Tharsis shields, major geologic activity ended at Hadriaca Patera over a billion years ago.
Tópico(s): Space Science and Extraterrestrial Life
2007 - American Geophysical Union | Journal of Geophysical Research Atmospheres
D. L. Matson, A. G. Davies, G. J. Veeder, J. A. Rathbun, T. V. Johnson, Julie Castillo‐Rogez,
We develop a physical model for Loki Patera as a magma sea. We calculate the total volume of magma moving through the Loki Patera volcanic system every resurfacing cycle (∼540 days) and ... in a manner consistent with observations. The Loki Patera surface temperature distribution shows that different areas are ... wave of thermal change which progresses from Loki Patera's SW quadrant toward the NE at a ... distribution, we test several mechanisms for resurfacing Loki Patera, finding that resurfacing with lava flows is not ...
Tópico(s): Planetary Science and Exploration
2006 - American Geophysical Union | Journal of Geophysical Research Atmospheres
P. J. McGovern, Sean C. Solomon, J. W. Head, David E. Smith, M. T. Zuber, G. A. Neumann,
... MOLA) profiles of the large shield volcano Alba Patera call for a critical reexamination of models for ... An extensive system of graben cuts across Alba Patera, extending from Ceraunius Fossae to the south to ... are located well up the flanks of Alba Patera. Both the type (extensional) and location (midflank) of faulting on Alba Patera are inconsistent with the state of stress predicted ... constrain the conditions governing the evolution of Alba Patera, we employ finite element models for the volcano ...
Tópico(s): Geological and Geochemical Analysis
2001 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Jovis Tholus, Ulysses Patera, and Biblis Patera, three small volcanoes in the Tharsis area of Mars, provide important insight into the evolution of volcanism on Mars. All three are ... outpouring of lavas and caldera-forming events. Ulysses Patera is dominated by a giant caldera within which ... had either significant volatiles or increased `viscosity. Biblis Patera is characterized by nested calderas which have expanded ...
Tópico(s): Paleontology and Stratigraphy of Fossils
1994 - Elsevier BV | Icarus
Tyrrhena Patera is a large, low‐relief volcano located in the southern cratered highlands of Mars on a proposed ... have been applied to the deposits at Tyrrhena Patera and indicate that the distribution and lengths of ... be supplied relatively rapidly in geologic time. Tyrrhena Patera represents the earliest central vent volcanism identified on ... early Martian history. A hydromagmatic origin for Tyrrhena Patera is in agreement with suggested climatic changes on ... later eras. Alternatively, a magmatic origin for Tyrrhena Patera implies an evolution in the types of magmas ...
Tópico(s): Geology and Paleoclimatology Research
1990 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Rishitosh K. Sinha, S. V. S. Murty,
... we investigated 30 craters lying in the Alba Patera volcanic province in the latitudinal bands between 45° ... to conclude that glacial/periglacial features in Alba Patera are mainly present within pole‐facing slopes of ... elevation ranges of the investigated craters in Alba Patera. Our results confirm past inferences for accumulation of ... period of ice/snow accumulation activity in Alba Patera occurred throughout the Amazonian and lasted until the ...
Tópico(s): Geology and Paleoclimatology Research
2013 - Wiley | Journal of Geophysical Research Planets
Laura Kerber, J. W. Head, Jean‐Baptiste Madeleine, F. Forget, Lionel Wilson,
... assess the hypothesis that explosive eruptions from Apollinaris Patera might have been the source of the Medusae ... this hypothesis, we examine stratigraphic relationships between Apollinaris Patera and the MFF and analyze the relief of ... the areal distribution of tephra erupted from Apollinaris Patera using a Mars Global Circulation Model (GCM) combined ... distribution of the MFF. We conclude that Apollinaris Patera could have been responsible for the emplacement of ...
Tópico(s): Geology and Paleoclimatology Research
2011 - Elsevier BV | Icarus
L. L. Hood, Keith P. Harrison, B. Langlais, R. J. Lillis, Francois Poulet, D. A. Williams,
... of Mars Global Surveyor magnetometer data near Apollinaris Patera, a previously proposed volcanic source, supplemented by large- ... positive correlations of orbital anomalies with both Apollinaris Patera and Lucus Planum, a nearby probable extrusive pyroclastic ... Fossae Formation. Iterative forward modeling of the Apollinaris Patera magnetic anomaly assuming a source model consisting of ... larger and comparable to that of the Apollinaris Patera free-air gravity anomaly. A significantly lower rms ...
Tópico(s): Space Science and Extraterrestrial Life
2010 - Elsevier BV | Icarus
T. K. P. Gregg, R. M. C. Lopes,
Loki Patera (310° W, 12° N) is Io's largest patera at ∼180 km in diameter. Its morphology and ... behavior have led researchers to hypothesize that Loki Patera may either be an active lava lake that ... propose that, like at the southern EPR, Loki Patera is underlain by a thin, persistent magma "lens" that feeds thin, temporary lava lakes within the patera. Also like the southern EPR, overspilling of the ...
Tópico(s): Astro and Planetary Science
2007 - Elsevier BV | Icarus
Marius Paraschivoiu, Anthony T. Patera,
... Search for more papers by this authorAnthony T. Patera, patera@mit.edu Department of Mechanical Engineering, M.I. ... Search for more papers by this authorAnthony T. Patera, patera@mit.edu Department of Mechanical Engineering, M.I. ...
Tópico(s): Lattice Boltzmann Simulation Studies
2000 - Wiley | International Journal for Numerical Methods in Fluids
P. Schenk, A. S. McEwen, A. G. Davies, Trevor Davenport, Kevin B. Jones, Brain Fessler,
... to map the geology and topography of Ra Patera (a major active volcanic center and possible site ... sulfur eruptions on Io). The summit of Ra Patera reaches only ∼1 km above the surrounding plains. ... mountain unit (rising to ∼8 km near Carancho Patera) forms a 60 by 90 km wide plateau ∼ ... 5 km high 50 km east of Ra Patera. The new lava flows observed by Galileo flowed ...
Tópico(s): Geology and Paleoclimatology Research
1997 - American Geophysical Union | Geophysical Research Letters
Hadriaca Patera is a low‐relief volcano in the southern highlands of Mars northeast of the Hellas basin. Layered, ... nature of the flank materials indicate that Hadriaca Patera consists predominantly of pyroclastic deposits. Gravity‐driven flow ... source vent on Mars; the layering within Hadriaca Patera could be attributed to welding of pyroclastic flows ... summit calderas and on the flank of Tyrrhena Patera. The formation of the extensive ridged plains of ...
Tópico(s): Astro and Planetary Science
1993 - American Geophysical Union | Journal of Geophysical Research Atmospheres
G. G. Schaber, R. C. Kozak, H. Masursky,
... morphology of the nested craters that compose Cleopatra Patera are more closely analogous to volcanic craters (calderas) ... structures. Associated deposits northeast and downslope of the Patera first recognized on Venera 15/16 radar images ... easily reconciled with the tectonic setting of the Patera, it is almost required by the correlation between the Patera and regional structural trend.
Tópico(s): Maritime and Coastal Archaeology
1987 - American Geophysical Union | Geophysical Research Letters
V.S. Barashenkov, V. M. Mal'tsev, I. Patera, В.Д. Тонеев,
... Theoretical PhysicsSearch for more papers by this authorI. Patera, I. Patera Joint Institute for Nuclear Research, Laboratory of Theoretical ... Theoretical PhysicsSearch for more papers by this authorI. Patera, I. Patera Joint Institute for Nuclear Research, Laboratory of Theoretical ...
Tópico(s): Cold Fusion and Nuclear Reactions
1966 - Wiley | Fortschritte der Physik
Imke de Pater, E. Lellouch, D. F. Strobel, Katherine de Kleer, Thierry Fouchet, Michael H. Wong, Bryan J. Holler, J. A. Stansberry, P. M. Fry, Michael E. Brown, D. Bockelée‐Morvan, Samantha K. Trumbo, Leigh N. Fletcher, Matthew M. Hedman, Edward Molter, M. R. Showalter, Matthew S. Tiscareno, S. Cazaux, R. Hueso, Statia Luszcz‐Cook, Henrik Melin, Chris Moeckel, A. Mura, Glenn S. Orton, Lorenz Roth, Joachim Saur, F. Tosi,
... 2022. Kanehekili Fluctus was exceptionally bright, and Loki Patera had most likely entered a new brightening phase. ... 25 km 2 in size, and for Loki Patera this high temperature was confined to an area ... Fluctus, and ∼5,000 km 2 for Loki Patera. We further detected the a 1 Δ ⇒ X ...
Tópico(s): Ionosphere and magnetosphere dynamics
2023 - Wiley | Journal of Geophysical Research Planets