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   Articles with "velocity model" as a keyword



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3D S-velocity model of the lithosphere-asthenosphere system beneath the Bering Sea

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recommendations! 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

Significance of VP/VS ratio in locating earthquakes of a long-duration swarm in the western coast of India

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recommendations! Published in 2024 at "Journal of Seismology"

DOI: 10.1007/s10950-024-10223-6

Abstract: The earthquake swarm in Palghar, western India, is a natural laboratory to understand long-duration seismogenesis. However, it requires an accurate estimation of the key parameters, such as earthquake locations and the velocity model of the… read more here.

Keywords: seismology; long duration; velocity model; model ... See more keywords

An improved 1-D crustal velocity model for the Central Alborz (Iran) using Particle Swarm Optimization algorithm

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recommendations! 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

New 3D Velocity Model (mTAB3D) for Absolute Hypocenter Location in Southern Iberia and the Westernmost Mediterranean

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recommendations! Published in 2024 at "Earth and Space Science"

DOI: 10.1029/2023ea002993

Abstract: The Trans‐Alboran Shear Zone is one of the most seismically active areas in the westernmost Mediterranean, where a wide variety of tectonic domains have developed within the context of oblique convergence between Eurasia and Africa… read more here.

Keywords: westernmost mediterranean; absolute hypocenter; location; velocity model ... See more keywords

Appraisal of the Hellenic Geodetic Reference System 1987 based on backward-transformed ITRF coordinates using a national velocity model

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recommendations! 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
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Seismotectonics and 1-D velocity model of the Greater Geneva Basin, France–Switzerland

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recommendations! 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

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recommendations! 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

Cyclic Learning Rate U-Shaped ResNet Embedded With Dual Attentions for Velocity Model Building

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recommendations! Published in 2025 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"

DOI: 10.1109/jstars.2024.3501736

Abstract: Data-driven full-waveform inversion shows great potential for subsurface velocity estimation, but its accuracy is often hindered by susceptibility to local minima and the inherent characteristics of seismic data. Seismic shot gathers typically exhibit weak spatial… read more here.

Keywords: learning rate; velocity model; cyclic learning; velocity ... See more keywords

High-Resolution Velocity Model Building Based on Common-Source Migration Images and Convolutional Neural Networks

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recommendations! 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

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recommendations! 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

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recommendations! 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