Tomotectonics uses deep mantle structure in order to hindcast paleo-trenches, by spatially superposing subducted lithosphere (slabs) imaged by seismic tomography with plate reconstructions at the surface. The two geophysical datasets combined make predictions about geologic events, specifically about volcanic arcs and their collisions with continen...
Seismic gradient measurements from distributed acoustic sensors, rotational sensors and otherinstruments are becoming increasingly available for field surveys. Such measurements providea wealth of information and are currently being considered for many applications. In this work,using a simple 2-D numerical approach, we tackle the implications of s...
Methodological advances in seismic tomography are often driven by the quality of data sets. The dense and homogeneous spatial coverage of the AlpArray seismic network, including hundreds of permanent and temporary broadband stations, has motivated a series of methodological develop- ments of ambient-noise-based tomography of the lithosphere across ...
Local earthquake tomography (LET) is a popular method for inverting arrival time picks of local-regional earthquakes for P- and S-wave velocity and hypocenter parameters in seismically active regions. This popularity is due to some robust and well-documented open-source codes that are sometimes used as black boxes. The availability of a very comple...
Very long oceanic transform faults do not just offset mid-oceanic ridges by hundreds of kilometers, but they also induce variations in the lithospheric structure and affect mantle melting, and hence the crustal accretion at the ridge-transform intersection (RTI). However, the deep structure of large offset RTIs remains unknown. Here, we present thr...
Estimating site effects is important for seismic hazard assessment but can be difficult due to the scarcity of data in time and space, especially in low-to-moderate seismicity regions. Numerical simulations are helpful for understanding the physical parameters controlling site effects and for modelling their spatial variability, but simulations nee...
Published in Geophysical Journal International
Situated on the northern coast of the Indonesian island of Java, Jakarta and its metropolitan area (Greater Jakarta) are subject to significant earthquake hazards from a subduction zone south of Java and nearby active crustal faults. The seismic risk may be even higher because Greater Jakarta resides on a sedimentary basin filled with thick Pliocen...
Seismic tomography allows us to image physical properties such as seismic velocities or density, providing direct constraints on the composition and thermal state of the Earth's interior. The densification of seismic deployments, as well as the recent advances in high-performance computing, have opened new opportunities for applying full-waveform i...
In seismic tomography, traveltime infor mation of seismic body phases is commonly used to invert the seismic velocities of the subsurface structure. At long periods or for later seismic phases, the arri v al time of seismic phases lack definiti ve onset and a direct picking of the absolute arri v al time has large uncertainty and reproducibility. A...
The inversion of complete seismic waveforms offers new perspectives to better constrain the elastic properties of Earth’s interior. However, models of density and seismic velocities obtained from full waveform inversions are generally characterized by very different and uneven spatial resolutions. Because the 3-D structure of the Earth represents s...
