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Constraints on the lower mantle electrical conductivity from length-of-day changes

original article

open access

published version

Gillet, Nicolas

;

Martinec, Zdeněk

;

Lepage, Thea

;

Jault, Dominique

2025

,

ENS Éditions

,

Journal of studies of earth's deep interior

,

1

(paper 4)

We investigate how the radial profile 𝜎𝑚(𝑟 ) of the lower mantle electrical conductivity affectsthe downward continuation of the time-varying magnetic field to the core surface and the resulting invertedcore motions. ...

Deep-Focus Earthquakes Under Northeast China-An Imprint of the Complex Tectonic History of Pacific Plate Subduction

original article

open access

published version

Liu, Junqing

;

Zahradník, Jiří

;

Plicka, Vladimír

;

Gallovič, František

;

Bina, Craig R.

;

Čížková, Hana

2025

,

American Geophysical Union

,

Journal of Geophysical Research: Solid Earth

,

130

(9)

Deep-focus earthquakes and their association with metastable olivine wedges (MOWs) remain enigmatic. Here we perform a seismic-geodynamic analysis of the Pacific slab stagnant at the 660 km deep bottom of the mantle ...

Tidal Deformation and Dissipation Processes in Icy Worlds

summarizing article

open access

published version

Tobie, G.

;

Auclair-Desrotour, P.

;

Běhounková, Marie

;

Kervazo, M.

;

Souček, Ondřej

;

Kalousová, Klára

2025

,

Kluwer

,

Space Science Reviews

,

221

(1)

Tidal interactions play a key role in the dynamics and evolution of icy worlds. The intense tectonic activity of Europa and the eruption activity on Enceladus are clear examples of the manifestation of tidal deformation ...

Rotaphone-D, A New Model of Six-Degree-of-Freedom Seismic Sensor: Description and Performance

original article

open access

accepted version

Brokešová, Johana

;

Málek, Jiří

2025

,

Seismological Society of America

,

Seismological Research Letters

,

-

(October)

A new model of the Rotaphone-D short-period seismic sensor with six degrees of free-dom is introduced. The basis of the instrument is horizontal and vertical geophones in aspecial paired arrangement. The instrument is ...

Upper mantle anelasticity and its time dependence resolved by GPS in 3-D ocean tide loading displacements

original article

open access

published version

Huang, Pingping

;

Penna, Nigel T.

;

Clarke, Peter J.

;

Klemann, Volker

;

Martinec, Zdeněk

;

Tanaka, Yoshiyuki

2025

,

Elsevier Science

,

Earth and Planetary Science Letters

,

671

(September)

Ocean tide loading (OTL) refers to the Earth's deformational response to periodic ocean mass redistributions driven by astronomical tides. This transient deformation likely involves anelasticity, which is associated with ...

The 2021 M_w 5.6 Earthquake in the Guyana Shield, South America: An Intraplate Event with No Reason to Occur

original article

open access

published version

Assumpcao, Marcelo

;

Bianchi, Marcelo

;

Calhau, Jackson

;

Rosa, Daniel

;

Baksh, Javed

;

Assing, Daniella

;

Basdeo, Christopher

;

Zahradník, Jiří

;

Dias, Fabio

;

Jolivet, Romain

;

Calais, Eric

2025

,

Seismological Society of America

,

The Seismic Record

,

5

(2)

In 31 January 2021, an Mw 5.6 earthquake occurred in the Guyana shield, causing damage to adobe houses and ground cracks. A four-station network, installed in March, showed a shallow (1-3 km) southeast-northwest-oriented ...

The influence of spin-orbit resonances on the evolution of Mercury's mantle and crust

original article

open access

published version

Tosi, Nicola

;

Schulz, Falko

;

Walterová, Michaela

;

Padovan, Sebastiano

2025

,

Academic Press

,

Icarus

,

439

(April)

Mercury's record of large impact basins and spin evolution models suggest that its present-day 3:2 spin-orbit resonance may not be primordial. It could have been established up to hundreds of millions of years after planet ...

Subduction-like process in Europa's ice shell triggered by enhanced eccentricity periods

original article

open access

published version

Kihoulou, Martin

;

Choblet, Gael

;

Tobie, Gabriel

;

Kalousová, Klára

;

Čadek, Ondřej

2025

,

AMER ASSOC ADVANCEMENT SCIENCE

,

Science Advances

,

11

(23)

Jupiter's icy moon Europa has a liquid water ocean beneath the ice shell and a geologically young surface, both related to extensive tidal processes. Interlaced by tectonic faults, the surface records convergent motions ...

Physics-based broadband characterization of weak earthquakes

original article

open access

published version

Gallovič, František

;

Sgobba, Sara

;

Valentová Krišková, Ľubica

2025

,

Nature Publishing Group

,

Nature Communications

,

16

(1)

Analyses of abundant small earthquakes have the potential to map the Earth's small-scale stress and frictional properties. However, standard seismological characterizations lack the resolution to capture the physical ...

Complex Dynamic Rupture of an Mw5.8 Intermediate-Depth Earthquake in the Hellenic Slab

original article

open access

published version

Gallovič, František

;

Plicka, Vladimír

;

Valentová, Ľubica

;

Sokos, E.

;

Zahradník, Jiří

2025

,

Wiley

,

Geophysical Research Letters

,

52

(7)

Earthquakes in the Hellenic slab, traced by tomography down to 1,200 km, occur at depths <200 km with enigmatic origin and dynamics. We study a 2014 Mw5.8 left-lateral strike-slip earthquake originating at a depth of ...

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