Results 181 to 190 of about 48,213 (234)

High Geomagnetic Reversal Frequency During the Middle to Late Ediacaran (∼570 Ma) Constrained by Integrated Magneto‐ and Cyclostratigraphy

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The Ediacaran–Cambrian (∼635–539 Ma) geomagnetic field is characterized by unusually high reversal rates and markedly weakened field strength. Estimates of these reversal frequencies can reveal key aspects of deep Earth dynamics and their potential influence on surface environments and early complex life.
J. W. L. Afonso, R. M. Rocha, D. R. Franco, N. B. Dos Santos, C. G. Leandro, P. Franceschinis, A. E. Rapalini, M. J. Arrouy, L. E. Gómez‐Peral, D. G. Poiré, S. Caetano‐Filho, H. D. Brito, R. I. F. Trindade   +12 more
wiley   +1 more source

Polarization Measurements and Source Locations of Saturn Electrostatic Discharges During the Voyager Era

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract A Saturn Electrostatic Discharge or SED is an intense electromagnetic impulse induced by Saturn lightning, which escapes into space through the magnetoplasma of the ionosphere. Since previous SED polarizations from Voyager data are inconclusive, this polarization study is the first which properly considers the characteristics of the Voyager ...
Masafumi Imai, Georg Fischer, Ulrich Taubenschuss, Ivana Kolmašová, Ondřej Santolík, David Píša   +5 more
wiley   +1 more source

Dawn-dusk Asymmetrical Distribution of Saturn's Cusp. [PDF]

Nat Commun
Xu Y, Yao ZH, Arridge CS, Zhang B, Chen JJ, Badman SV, Ray LC, Coates AJ, Ye SY, Qin TS, Zheng ZQ, Dunn WR, Wei Y.   +12 more
europepmc   +1 more source

A Panspermia Origin for Venus Cloud Life

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Decades of study have hinted at the astrobiological potential of Venus's cloud layers. This potential is often cast as stemming from the idea that the Venusian surface was clement in the past. As the climate changed, life then remained in, or perhaps evolved and migrated to, the last habitable niche: the altitudes above ∼50 km with Earth‐like ...
E. Guinan, T. J. Austin, J. G. O’Rourke, N. G. Izenberg, E. A. Silber, E. Trembath‐Reichert   +5 more
wiley   +1 more source

Statins for the "SMuRFLess But Inflamed": Silent Vascular Inflammation and the Challenge of Translational Science. [PDF]

JACC Basic Transl Sci
Ridker PM.
europepmc   +1 more source

Characterization of the Outer Uranian Rings in the Visual and Near‐IR Using Keck, JWST, and HST Observations

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract We present observations of the Uranian outer ring system at near‐infrared and visible wavelengths. Observations with the Keck Telescope were taken in July‐August 2007 at 2.12 and 1.63 μm, when the ring plane was almost edge‐on (ring opening angle B=0.62 $B=0.62$–0.24° ${}^{\circ}$). These data showed, for the first time, the μ ring at infrared
Imke de Pater, Mark R. Showalter, Matt M. Hedman, Heidi B. Hammel, Mike Roman, Leigh N. Fletcher, Maryame El Moutamid, Damya Souami   +7 more
wiley   +1 more source

The Ocean Equity Index. [PDF]

Nature
Blythe JL, Claudet J, Gill D, Ban NC, Epstein G, Gurney GG, Jupiter SD, Mahajan SL, Mangubhai S, Turner R, Bennett NJ, D'Agata S, Franks P, Lau J, Ahmadia G, Andrachuk M, Annasawmy P, Brun V, Darling ES, Di Franco A, Evans L, Lazzari N, Naggea J, Relano V, Pertuz MC, Villasante S, Zafra-Calvo N.   +26 more
europepmc   +1 more source

Magnetic Field Induced by Convective Flow in Ganymede's Subsurface Ocean

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract It has been suggested that the convective flows in Ganymede's subsurface ocean can generate a magnetic field that is strong enough to be measured by future space missions. Here, we investigate this hypothesis by developing a numerical model of Ganymede's magnetic field induced by the motion of salt water in its interior.
L. Šachl, J. Kvorka, O. Čadek, J. Velímský   +3 more
wiley   +1 more source

Long‐Term Variations of Jupiter's Stratospheric Planetary Waves Modulated by the Quasi‐Quadrennial Oscillation

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Planetary wave activity on Jupiter has been consistently observed since the Voyager mission. This study uses NASA Infrared Telescope Facility 7.6–7.9 μm long‐term ground‐based observations from 1984 to 2011 and global maps from the Cassini flyby in November and December 2000 to analyze Jupiter's stratospheric planetary wave activity.
Jialin Zhang, Dexin Lai, Tao Li, Chengyun Yang, Xin Fang, Yihuang Tang, Yuming Wang   +6 more
wiley   +1 more source

Implant Placement in the Palatal Root Socket of Maxillary Molars to Avoid Posterior Cantilevers in All-on-X Treatments. [PDF]

Cureus
Yaghmai P, Kurtzman GM.
europepmc   +1 more source