Probabilistic moment tensor inversion for hydrocarbon‐induced seismicity in the Groningen gas field, The Netherlands, Part 1: Testing

D Kühn, S Heimann, MP Isken… - Bulletin of the …, 2020 - pubs.geoscienceworld.org
Since 1991, induced earthquakes have been observed and linked to gas production in the
Groningen field. Recorded waveforms are complex, resulting partly from a Zechstein salt …

Hamiltonian Monte Carlo inversion of seismic sources in complex media

A Fichtner, S Simutė - Journal of Geophysical Research: Solid …, 2018 - Wiley Online Library
We present a probabilistic seismic point source inversion, taking into account 3‐D
heterogeneous Earth structure. Our method rests on (1) reciprocity and numerical wavefield …

Seismic moment tensor inversion with theory errors from 2-D Earth structure: implications for the 2009–2017 DPRK nuclear blasts

J Hu, TS Phạm, H Tkalčić - Geophysical Journal International, 2023 - academic.oup.com
Determining the seismic moment tensor (MT) from the observed waveforms with available
Earth's structure models is known as seismic waveform MT inversion. It remains challenging …

Point‐source inversion of small and moderate earthquakes from P‐wave polarities and P/S amplitude ratios within a hierarchical Bayesian framework: Implications for …

X Shang, H Tkalčić - Journal of Geophysical Research: Solid …, 2020 - Wiley Online Library
Characterizing seismic moment tensors of small‐to moderate‐magnitude earthquakes (ie,
2.5< M< 4.0) still represents a challenge in observational seismology. To address this …

Centroid moment tensor catalogue using a 3‐D continental scale Earth model: Application to earthquakes in Papua New Guinea and the Solomon Islands

B Hejrani, H Tkalčić, A Fichtner - Journal of Geophysical …, 2017 - Wiley Online Library
Although both earthquake mechanism and 3‐D Earth structure contribute to the seismic
wavefield, the latter is usually assumed to be layered in source studies, which may limit the …

Bayesian ISOLA: new tool for automated centroid moment tensor inversion

J Vackář, J Burjánek, F Gallovič… - Geophysical Journal …, 2017 - academic.oup.com
We have developed a new, fully automated tool for the centroid moment tensor (CMT)
inversion in a Bayesian framework. It includes automated data retrieval, data selection …

Estimation of full moment tensors, including uncertainties, for nuclear explosions, volcanic events, and earthquakes

C Alvizuri, V Silwal, L Krischer… - Journal of Geophysical …, 2018 - Wiley Online Library
A seismic moment tensor is a 3× 3 symmetric matrix that provides a compact representation
of a seismic source. We develop an algorithm to estimate moment tensors and their …

Resolvability of the centroid‐moment‐tensors for shallow seismic sources and improvements from modeling high‐frequency waveforms

B Hejrani, H Tkalčić - Journal of Geophysical Research: Solid …, 2020 - Wiley Online Library
Shallow earthquakes in the depth range 0–30 km make up more than 60% of all world's
earthquakes. However, resolving their seismic source parameters such as the depth and …

Fast and cheap approximation of Green function uncertainty for waveform-based earthquake source inversions

M Hallo, F Gallovič - Geophysical Journal International, 2016 - academic.oup.com
Green functions (GFs) are an essential ingredient in waveform-based earthquake source
inversions. Hence, the error due to imprecise knowledge of a crustal velocity model is one of …

A multibranch, multitarget neural network for rapid point-source inversion in a microseismic environment: examples from the Hengill Geothermal Field, Iceland

N Nooshiri, CJ Bean, T Dahm, F Grigoli… - Geophysical Journal …, 2022 - academic.oup.com
Despite advanced seismological techniques, automatic source characterization for
microseismic earthquakes remains difficult and challenging since current inversion and …