Results 221 to 230 of about 102,704 (290)

Viscosity of Trachytic Melt Constrained by Integrated Rheological and In Situ Spectroscopic Analyses: Insights From the Agnano‐Monte Spina Eruption (Campi Flegrei, Italy)

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Quantifying the viscosity of hydrous volcanic melts is essential for understanding ascent dynamics, degassing efficiency, and fragmentation, yet laboratory measurements may be compromised by syn‐analytical evolution in melt structure at the nanoscale, thus yielding viscosity values not representative of a homogeneous melt phase.
Sumith Abeykoon, Laura Calabrò, Danilo Di Genova, Alexander Kurnosov, Emily C. Bamber, Dmitry Bondar, Pedro Valdivia, Alessandro Vona, Michael R. Carroll, Claudia Romano, Fabio Arzilli   +10 more
wiley   +1 more source

Inhomogeneous Fluid Motion Induced by Standing Surface Acoustic Wave (SAW): A Finite Element Study. [PDF]

Micromachines (Basel)
Hu J, Zhang C, Zhou Y.
europepmc   +1 more source

Viscoacoustic Full Wavefield Migration With Tomographic Q Estimation

Geophysical Prospecting, Volume 74, Issue 4, May 2026.
ABSTRACT Seismic wave propagation in the Earth's subsurface is influenced by anelastic attenuation, which causes energy loss and waveform distortion, degrading image resolution. This effect, quantified by the quality factor (Qf${{\textit {Q}}_f}$), is particularly pronounced in settings such as carbon capture and storage and near‐surface studies, where
Mohammad Safari, Dirk Jacob Verschuur
wiley   +1 more source

Space-time superoscillations. [PDF]

Nat Commun
Shen Y, Papasimakis N, Zheludev NI.
europepmc   +1 more source

Microspherules formed by lightning strikes

Meteoritics &Planetary Science, Volume 61, Issue 5, Page 743-767, May 2026.
Abstract Natural microspherules are formed by high‐temperature processes and are present throughout the geologic record to the present day. We report the discovery of large numbers of microspherules recovered from a rock pavement in the Pilbara region, Western Australia.
M. R. Boyd, M. J. Genge, A. G. Tomkins
wiley   +1 more source

Chemical Species-Dependent Structural Modification of Vitreous SiO₂ by Monovalent Anions. [PDF]

J Phys Chem B
Harrison LM, Clark AN, Sarafian AR, Moore LA, Nie CD, Moore GG, Tingley JE, McKenzie ME.   +7 more
europepmc   +1 more source

Layered Seismic Anisotropy and Tectonics of the Anatolian Plate

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Anatolian tectonics are associated with slab retreat in the west and gravitational potential energy and continental collision in the east, leading to westward motion of Anatolia relative to Eurasia, partially accommodated on the North and East Anatolian transform faults.
Chuanming Liu, Vera Schulte‐Pelkum, Thorsten W. Becker, Frederik Link, Lili Feng   +4 more
wiley   +1 more source

The propagation characteristics of acoustic surface waves and the applications of power ultrasound based on AlN/GaN piezoelectric thin films. [PDF]

Ultrason Sonochem
Zhang T, Ming W, Wen Z, Yousaf H, Gong P, Li L.   +5 more
europepmc   +1 more source

Transport to the Extratropical Stratosphere by Overshooting Storms in Idealized Simulations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract Deep convection is a significant source of water to the extratropical stratosphere which can alter radiative properties and contribute to ozone loss. Previous studies find it responsible for 40% of mid‐latitude water vapor above 380K. However, the amount of hydration from individual storms and the mechanisms that initiate mixing is less ...
Devin P. Bissell, Christopher J. Nowotarski, Kenneth P. Bowman, Anita D. Rapp   +3 more
wiley   +1 more source