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Tidal Heating in a Subsurface Magma Ocean on Io Revisited

original article

open access

published version

Aygun, Burak

;

Čadek, Ondřej

2024

,

Geophysical Research Letters

,

51

(10)

We investigate the tidal dissipation in Io's hypothetical fluid magma ocean using a new approach based on the solution of the 3D Navier-Stokes equations. Our results indicate that the presence of a shallow magma ocean on ...

Electrical conductivity of the suboceanic upper mantle constrained by satellite-derived tidal magnetic fields: three-dimensional inversion, validation and interpretation

original article

open access

published version

Šachl, Libor

;

Knopp, Ondřej

;

Velímský, Jakub

2024

,

Geophysical Journal International

,

238

(3)

We present the first 3-D upper-mantle conductivity models obtained by an inversion of the satellite-derived tidally induced magnetic fields (TIMFs). We primarily use the M$_2$ period, but the potential benefit of the O$_1$ ...

Slab buckling as a driver for rapid oscillations in Indian plate motion and subduction rate

original article

open access

published version

van der Wiel, Erik

;

Pokorný, Jakub

;

Čížková, Hana

;

Spakman, Wim

;

van den Berg, Arie P.

;

van Hinsbergen, Douwe J. J.

2024

,

Communications Earth & Environment

,

5

(1)

Plate tectonics is primarily driven by the constant gravitational pull of slabs where oceanic lithosphere sinks into the mantle at subduction zones. Under stable plate boundary configurations, changes in plate motion are ...

Satellite monitoring of long period ocean-induced magnetic field variations

original article

open access

published version

Finlay, Christopher C.

;

Velímský, Jakub

;

Kloss, Clemens

;

Blangsboll, Rasmus M.

2024

,

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

,

382

(2286)

Satellite magnetic field observations have the potential to provide valuable information on dynamics, heat content and salinity throughout the ocean. Here, we present the expected spatio-temporal characteristics of the ...

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 ...

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