Results 21 to 30 of about 210 (122)

One-dimensional physical reference models for the upper mantle and transition zone: combining seismic and mineral physics constraints [PDF]

One-dimensional seismic reference models are known to be a nonunique solution to global seismic data, hampering an interpretation in terms of physical structure. Here we test the compatibility of the simplest hypothesis of a mantle convecting as a whole,
Giardini, D., Deuss, A., Cammarano, F., Goes, S.   +3 more
core   +1 more source

Mechanical Properties and Fracture Behaviour of New Zealand Nephrite Jade (Pounamu): Implications for Fibre‐Toughening Mechanisms in Amphibole Monomineralic Rocks

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
Results of the first comprehensive quantitative analysis of the mechanical properties of New Zealand nephrite jade (pounamu), including hardness, Young's modulus, fracture toughness and notched flexural strength are reported for seven samples. These samples of exceptional quality were pre‐selected by experienced Māori carvers through a ranking process.
Natalia Seliutina, Kai Chun Li, Simon C. Cox, Marshall Palmer, David J. Prior, Nick Mortimer, Anne Ford, Li‐Wei Kuo   +7 more
wiley   +1 more source

In Situ Heating STEM of the Thickness‐Dependent Evolution of Ferroelastic Domains

Small, Volume 22, Issue 50, 7 September 2026.
In‐situ heating scanning transmission electron microscopy combined with machine‐learning segmentation is used to study the thickness and temperature dependent behavior of ferroelastic domain walls in free‐standing LaAlO3 samples. The results quantify domain wall curvature and density throughout cooling, revealing a pronounced thickness‐dependent ...
Luka Geddis Zellmann, Sumner B. Harris, John J. R. Scott, Yi‐Chieh Yang, Joerg R. Jinschek, Rama K. Vasudevan, Miryam Arredondo   +6 more
wiley   +1 more source

Seismic Velocity of Chlorite Under High Pressure and Temperature and Implications for the Lesser Antilles Subduction Zone

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Chlorite is thought to be one of the major water‐carrying phases in subduction zones, both within the slab and in the mantle wedge. Its presence has previously been linked to common seismological observations at subduction zones, including P and S wave anisotropy as well as high VP/VS ratios (>1.8) in the mantle wedge.
Nicholas Backhouse, Andrew Thomson, John Brodholt, Rostislav Hrubiak, Wilson Crichton, Ming Hao, Emmanuel A. Codillo, Anne Pommier, Michael J. Walter   +8 more
wiley   +1 more source

Poromechanics of Particle Remobilization and Interface Stiffness of Dynamically Stressed Fractured Rock

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract A range of natural (teleseismic waves) and industrial sources (hydraulic stimulation) of stress perturbations in the subsurface can alter the poromechanical response of fractured rock which may reactivate faults or otherwise breach reservoir seals.
Clay E. Wood, Jacques Rivière, Derek Elsworth, Chris Marone, Parisa Shokouhi   +4 more
wiley   +1 more source

Investigating Layered Cratonic Lithosphere in the Fennoscandian Shield

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract Cold, thick, and chemically depleted lithosphere with high seismic velocity and low attenuation characterizes continental cratons. However, discrepancies between xenolith‐based thermal constraints and those inferred from surface‐wave seismic models, together with the widespread observation of mid‐lithosphere discontinuities, challenge the ...
Yiran Huang, Colleen A. Dalton, Karen M. Fischer   +2 more
wiley   +1 more source

Implications of Thermal Weakening and Magma Compressibility for Volcano Monitoring

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Magmatic intrusion and volcanic deformation are traditionally approximated with an inflating cavity in an elastic halfspace. Various analytical models predict surface displacement as a function of pressure or volume change, depth, and elastic crustal properties.
A. Spang, A. Piccolo, M. Gerbault, B. J. P. Kaus, M. Thielmann   +4 more
wiley   +1 more source

The Anelasticity of the Earth [PDF]

, 1964
The attenuation of seismic waves is one manifestation of the earth's anelasticity and is not unrelated to the response of the earth to stresses of longer duration. The well-known difficulties involved in the extraction of meaningful amplitude information
Anderson, Don L., Archambeau, C. B.
core  

Tracking Deep Mantle Melting on Mars Using Phobos Tides

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract We study the deep internal structure and rheological state of Mars by analyzing its response to tidal forces exerted by Phobos and by introducing a melt fraction in the mantle layers. Motivated by recent seismic evidence for a basal molten layer near the base of the Martian mantle, we explore the distribution of melt within the mantle and its ...
A. Guinard, A. Fienga, A. Mémin, D. Antonangeli   +3 more
wiley   +1 more source

Acoustic attenuation due to transformation twins in CaCl2: Analogue behaviour for stishovite [PDF]

CaCl2 undergoes a tetragonal (P42/mnm) to orthorhombic (Pnnm) transition as a function of temperature which is essentially the same as occurs in stishovite at high pressures.
Zhang, Zhiying, Schranz, Wilfried, Carpenter, Michael A.   +2 more
core   +1 more source