Browsing Department of Earth Science by Journals "Geophysical Journal International"
Now showing items 1-9 of 9
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Crustal domains in the Western Barents Sea
(Journal article; Peer reviewed, 2021)The crustal architecture of the Barents Sea is still enigmatic due to complex evolution during the Timanian and Caledonian orogeny events, further complicated by several rifting episodes. In this study we present the new ... -
The crustal structure in the transition zone between the western and eastern Barents Sea
(Peer reviewed; Journal article, 2018-07)We present a crustal-scale seismic profile in the Barents Sea based on new data. Wide-angle seismic data were recorded along a 600 km long profile at 38 ocean bottom seismometer and 52 onshore station locations. The modelling ... -
Detailed lithospheric structure of an arc-continent collision beneathTaiwan revealed by joint inversion of seismological and gravity data
(Peer reviewed; Journal article, 2019)The largest compilation of seismological and gravimetry data are combined in a sequential inversion to shed light on unresolved crustal structures in Northern Taiwan and Southernmost Ryukyu area. Our density and seismic ... -
Extending local magnitude ML to short distances
(Peer reviewed; Journal article, 2019)Local magnitudes calculated at stations less than 10 km from earthquakes in the British Isles are up to one unit of magnitude higher than local magnitudes calculated at more distant stations. This causes a considerable ... -
Higher-order Hamilton–Jacobi perturbation theory for anisotropic heterogeneous media: dynamic ray tracing in Cartesian coordinates
(Peer reviewed; Journal article, 2019)With a Hamilton–Jacobi equation in Cartesian coordinates as a starting point, it is common to use a system of ordinary differential equations describing the continuation of first-order derivatives of phase-space perturbations ... -
Higher-order Hamilton–Jacobi perturbation theory for anisotropic heterogeneous media: dynamic ray tracing in ray-centred coordinates
(Journal article; Peer reviewed, 2021)Dynamic ray tracing is a robust and efficient method for computation of amplitude and phase attributes of the high-frequency Green’s function. A formulation of dynamic ray tracing in Cartesian coordinates was recently ... -
Homotopy analysis of the Lippmann-Schwinger equation for seismic wavefield modeling in strongly scattering media
(Peer reviewed; Journal article, 2020)We present an application of the homotopy analysis method for solving the integral equations of the Lippmann-Schwinger type, which occurs frequently in acoustic and seismic scattering theory. In this method, a series ... -
Localized crustal deformation along the central North Anatolian Fault Zone revealed by joint inversion of P-receiver functions and P-wave polarizations
(Peer reviewed; Journal article, 2019)The North Anatolian Fault Zone (NAFZ) is a major plate boundary that separates the Eurasian Plate to the north from the Anatolian Plate to the south and is associated with powerful damaging earthquakes. Despite numerous ... -
Traveltime approximation for strongly anisotropic media using the homotopy analysis method
(Peer reviewed; Journal article, 2019)Traveltime approximation plays an important role in seismic data processing, for example, anisotropic parameter estimation and seismic imaging. By exploiting seismic traveltimes, it is possible to improve the accuracy of ...