Near-surface site characterization based on joint iterative analysis of first-arrival and surface-wave data

Z Wang, C Sun, D Wu - Surveys in Geophysics, 2023 - Springer
Near-surface site characterization is of great significance in the fields of geotechnical
engineering and resource exploration. In this paper, we propose a near-surface site …

Joint inversion of seismic traveltime and frequency-domain airborne electromagnetic data for hydrocarbon exploration

JN Ogunbo, G Marquis, J Zhang, W Wang - Geophysics, 2018 - library.seg.org
Geophysical joint inversion requires the setting of a few parameters for optimum
performance of the process. However, there are yet no known detailed procedures for …

[HTML][HTML] 微测井与方位加权插值精细近地表速度建模技术

金昌昆, 王延光, 尚新民, 崔庆辉, 王东凯 - 石油地球物理勘探, 2020 - html.rhhz.net
为构建精细地表速度模型, 提出一种基于微测井层析的方位加权插值建模方法:
首先将层析成像原理应用于微测井走时数据, 获得各观测点处的精细速度分布; …

Alternating first-arrival traveltime tomography and waveform inversion for near-surface imaging

M Sun, J Zhang, W Zhang - Geophysics, 2017 - library.seg.org
Near-surface seismic imaging often plays a significant role in producing quality data
processing results for the deep subsurface in land and shallow marine environments. First …

First-arrival travel times picking through sliding windows and fuzzy c-means

L Gao, Z Jiang, F Min - Mathematics, 2019 - mdpi.com
First-arrival picking is a critical step in seismic data processing. This paper proposes the first-
arrival picking through sliding windows and fuzzy c-means (FPSF) algorithm with two stages …

Stable first-arrival picking through adaptive threshold determination and spatial constraint clustering

L Gao, H Jiang, F Min - Expert Systems with Applications, 2021 - Elsevier
First-arrival picking is a critical step of determining the onsets of signals in seismic
exploration. Existing approaches are usually sensitive to background noise and user …

First-arrival traveltime tomography with near-surface structural regularization

Y Wo, HW Zhou, Z Zou, Y Yue - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
In complex near-surface geologic settings, first-arrival traveltime tomography suffers from
strong data noise and uneven raypath coverage. To reduce the inversion nonuniqueness …

Traveltime tomographic inversion with simultaneous static corrections—Well worth the effort

A Tryggvason, C Schmelzbach, C Juhlin - Geophysics, 2009 - library.seg.org
We have developed a first-arrival traveltime inversion scheme that jointly solves for seismic
velocities and source and receiver static-time terms. The static-time terms are included to …

The near-surface velocity reversal and its detection via unsupervised machine learning

M Sun, J Zhang - Geophysics, 2020 - library.seg.org
In land seismic data processing, picking the first arrivals and imaging the near-surface
velocity structures are important tasks. However, in many areas, the near-surface weathering …

Layer-stripping full waveform inversion with damped seismic reflection data

A Bian, W Yu - Journal of Earth Science, 2011 - Springer
Full waveform inversion (FWI) directly minimizes errors between synthetic and observed
data. For the surface acquisition geometry, reflections generated from deep reflectors are …