3D S-velocity model of the lithosphere-asthenosphere system beneath the Bering Sea
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Earth Sciences"
DOI: 10.1007/s00531-020-01868-y
Abstract: The 3D S-velocity structure for the Bering Sea region is determined from dispersion analysis (Rayleigh waves), from which the most conspicuous features of the crust and upper mantle (from 0 to 400 km depth) will be… read more here.
Keywords: depth; bering sea; beneath; velocity ... See more keywords
An improved 1-D crustal velocity model for the Central Alborz (Iran) using Particle Swarm Optimization algorithm
Sign Up to like & getrecommendations! Published in 2019 at "Physics of the Earth and Planetary Interiors"
DOI: 10.1016/j.pepi.2019.05.009
Abstract: Summary We present an improved 1-D velocity model of the crust in the Central Alborz region using one of the powerful methods in global optimization techniques named Fuzzy Self-Tuning Particle Swarm Optimization (hereafter called FST-PSO).… read more here.
Keywords: optimization; velocity; central alborz; velocity model ... See more keywords
Appraisal of the Hellenic Geodetic Reference System 1987 based on backward-transformed ITRF coordinates using a national velocity model
Sign Up to like & getrecommendations! Published in 2017 at "Survey Review"
DOI: 10.1080/00396265.2016.1180797
Abstract: The paper presents a detailed accuracy evaluation of the Hellenic Geodetic Reference System 1987 (HGRS87), a non-geocentric traditional local datum which was established thirty years ago and it is still used as the official coordinate… read more here.
Keywords: hellenic geodetic; system; velocity model; geodetic reference ... See more keywords
Seismotectonics and 1-D velocity model of the Greater Geneva Basin, France–Switzerland
Sign Up to like & getrecommendations! Published in 2020 at "Geophysical Journal International"
DOI: 10.1093/gji/ggaa129
Abstract: The Greater Geneva Basin, located in south-western Switzerland and neighboring France, is enclosed by the rotating north-western edge of the Alpine front and the Jura mountains chain. Recently, this basin has received increasing attention as… read more here.
Keywords: greater geneva; velocity model; switzerland; geneva basin ... See more keywords
3-D crustal shear-wave velocity model derived from full-waveform tomography for Central Honshu Island, Japan
Sign Up to like & getrecommendations! Published in 2023 at "Geophysical Journal International"
DOI: 10.1093/gji/ggad216
Abstract: We present a crustal shear-wave (S-wave) velocity model for central Japan that accurately captures the previously mapped geology and lithology of the region. We perform a full-waveform tomographic inversion using a large seismic data volume… read more here.
Keywords: crustal shear; shear wave; velocity; wave velocity ... See more keywords
High-Resolution Velocity Model Building Based on Common-Source Migration Images and Convolutional Neural Networks
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2021.3098196
Abstract: Building a reliable velocity model plays a vital role in seismic imaging and quantitative reservoir description. However, the current data-driven deep-learning-based velocity model building (VMB) approaches directly reconstruct the velocity model of the subsurface from… read more here.
Keywords: model building; velocity; migration; model ... See more keywords
Deep-Learning-Based Seismic Variable-Size Velocity Model Building
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2022.3204747
Abstract: Current data-driven inversion methods based on deep learning (DL) use an end-to-end learning to obtain a mapping relationship from seismic data to the velocity model. These methods require truncating the feature maps in the output… read more here.
Keywords: network; velocity; model; velocity model ... See more keywords
Multitask Learning for Super-Resolution of Seismic Velocity Model
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2020.3034502
Abstract: Full waveform inversion (FWI) is a powerful tool for estimating the underground velocity model. However, it is computationally expensive and the resulting models tend to be not accurate enough. Thus, to improve the efficiency and… read more here.
Keywords: seismic velocity; velocity; super resolution; velocity model ... See more keywords
Seismic Velocity Model Building Using Recurrent Neural Networks: A Frequency-Stepping Approach
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2022.3210899
Abstract: Data-driven artificial neural networks (ANNs) demonstrably offer numerous advantages over the conventional deterministic methods in a wide range of geophysical problems. For seismic velocity model building, judiciously trained ANNs offer the possibility of estimating subsurface… read more here.
Keywords: frequency; model building; velocity; velocity model ... See more keywords
Upwind, No More: Flexible Traveltime Solutions Using Physics-Informed Neural Networks
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2022.3218754
Abstract: The eikonal equation plays an important role across multidisciplinary branches of science and engineering. In geophysics, the eikonal equation and its characteristics are used in addressing two fundamental questions pertaining to seismic waves: what paths… read more here.
Keywords: informed neural; physics; eikonal equation; upwind flexible ... See more keywords
Nonlinear Analysis of Stability and Safety of Optimal Velocity Model Vehicle Groups on Ring Roads
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Intelligent Transportation Systems"
DOI: 10.1109/tits.2022.3192323
Abstract: In this work, we study a group of $N$ homogeneous vehicles travelling on a ring road by describing the collective vehicle dynamics via the so-called Optimal Velocity Model (OVM). We analyze the stability of the… read more here.
Keywords: stability; optimal velocity; model; vehicle ... See more keywords