Results 81 to 90 of about 5,381 (217)

Fire Weather Index (FWI) for Estonia for growing seasons 2018 and 2019

, 2020
The Canadian Forest Fire Weather Index (FWI) System (Van Wagner 1987) is a weather-based means of calculating potential fire conditions. Canadian research on forest fire danger rating was started in the 1920s, but in recent decades, FWI is widely used in
Sagris, Valentina, Muru, Merle, Oja, Tõnu, Sepp, Edgar   +3 more
core   +1 more source

Feasibility study of full waveform inversion of Love-SH waves for detecting small-scale shallow anomalies

AIP Advances
In engineering surveys, conventional SH-wave seismic exploration methods exhibit limited resolution for detecting small-scale shallow anomalies, often failing to meet practical requirements.
Xu Sun, Wei Xu, Yingju Xiong, Yong Li, Xiaoqing Song   +4 more
doaj   +1 more source

A brief exploration of open-source gradient-based numerical optimization Python libraries for full-waveform inversion

Seismica
Geoscientists favor Python for its user-friendly interface and scientific packages that support application implementation. Python's capabilities make it particularly useful for seismic full waveform inversion (FWI), which can see its implementation ...
Oscar Mojica
doaj   +1 more source

A New Workflow for Surface Wave FWI Combining Genetic Algorithm and Gradient-Based Optimization Algorithms

, 2018
We propose a new workflow for surface wave (SW) inversion by combining the two-grid genetic algorithm (GA) and gradient-based full waveform inversion (FWI).
F. Rappisi, A. Mazzotti, Z. Xing
core   +1 more source

Synthetic data for seismic attenuation FWI

This dataset is several synthetic models for seismic velocity and attenuation ...
Yang, Jidong
core   +1 more source

Codes for generating FFDI and FWI

This dataset contains the calculation codes of FFDI and FWI ...
He, Yan, Im, Eun Soon, Zhou, Zixuan
core   +1 more source

FULL WAVEFORM INVERSION USING REVERSE TIME MIGRATION AND GOLDEN RATIO

JGE
Seismic wave imaging techniques, such as conventional full-waveform inversion (FWI), which utilize numerical solutions of seismic wave equations, can be a valuable tool for estimating high resolution models of complex geological conditions.
Made Jnanaparama Aparajita, M Rafif Pascaloa, Ahmad Dedi Putra, Harish Hartsa Naufal   +3 more
doaj   +1 more source

FWI of noisy seismic land data acquired for geothermal exploration

, 2019
We present an experience of acoustic FWI on a noisy 2D land dataset to the end of providing a velocity model for direct geological interpretation. We first perform a dedicated processing trying to improve the data quality and we select as the input for ...
Tognarelli A., Stucchi E., Mazzotti A.
core   +1 more source

Diffusion prior as a direct regularization term for FWI

CoRR
Diffusion models have recently shown promise as powerful generative priors for inverse problems. However, conventional applications require solving the full reverse diffusion process and operating on noisy intermediate states, which poses challenges for physics-constrained computational seismic imaging.
Yuke Xie, Hervé Chauris, Nicolas Desassis   +2 more
openaire   +2 more sources

Time and Frequency-domain FWI Implementations Based on Time Solver - Analysis of Computational Complexities

, 2014
International audienceFull Waveform Inversion is an appealing technique to derive Earth subsurface models. With the development of modern HPC architectures, FWI implementations should benefit from the available computing power.
L. Combe, Virieux, Jean, R. Brossier, B. Pajot, S. Operto, Pajot, Benjamin, Métivier, Ludovic, J. Virieux, Combe, Laure, Operto, Stéphane, Brossier, Romain, L. Metivier   +11 more
core   +1 more source