Výsledky vyhledávání - "B. A. Flinchum"

Akademický článek

2D Near‐Surface Full‐Waveform Tomography Reveals Bedrock Controls on Critical Zone Architecture

Autor: B. J. Eppinger, W. S. Holbrook, Z. Liu, B. A. Flinchum, J. Tromp

Publikováno v: Earth and Space Science, Vol 11, Iss 2, Pp n/a-n/a (2024)

Abstract For decades, seismic imaging methods have been used to study the critical zone, Earth's thin, life‐supporting skin. The vast majority of critical zone seismic studies use traveltime tomography, which poorly resolves heterogeneity at many s

Externí odkaz: https://doaj.org/article/3f493c37ae3f4092994d651094043d87

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Akademický článek

Low Vp/Vs Values as an Indicator for Fractures in the Critical Zone

Autor: B. A. Flinchum, D. Grana, B. J. Carr, N. Ravichandran, B. Eppinger, W. S. Holbrook

Publikováno v: Geophysical Research Letters, Vol 51, Iss 2, Pp n/a-n/a (2024)

Abstract Poisson's ratio for earth materials is usually assumed to be positive (Vp/Vs > 1.4). However, this assumption may not be valid in the critical zone because near Earth's surface effective pressures are low (

Externí odkaz: https://doaj.org/article/6a13dc0789e947f89349db3995487fda

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Akademický článek

Identifying recharge under subtle ephemeral features in a flat-lying semi-arid region using a combined geophysical approach

Autor: B. A. Flinchum, E. Banks, M. Hatch, O. Batelaan, L. J. M. Peeters, S. Pasquet

Publikováno v: Hydrology and Earth System Sciences, Vol 24, Pp 4353-4368 (2020)

Identifying and quantifying recharge processes linked to ephemeral surface water features is challenging due to their episodic nature. We use a combination of well-established near-surface geophysical methods to provide evidence of a surface and grou

Externí odkaz: https://doaj.org/article/66eec8c53cb84add8e5c7a9984bb9851

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Improving the hydrogeologic conceptualization of a remote semiarid palaeovalley groundwater system using airborne electromagnetics, seismic refraction and reflection, and downhole nuclear magnetic resonance

Autor: Tim Munday, Kevin Cahill, B. A. Flinchum, Luk Peeters

Publikováno v: GEOPHYSICS. 86:WB149-WB168

A hydrogeologic conceptualization is critical to understand, manage, protect, and sustain groundwater resources, particularly in regions where data are sparse and accessibility is difficult. We used airborne electromagnetics (AEM), shallow seismic re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59d664160fa4ff319943bcef698d8088
https://doi.org/10.1190/geo2020-0614.1

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Multiwindow weighted stacking of surface-wave dispersion

Autor: Sylvain Pasquet, B. A. Flinchum, Wei Wang, Po Chen

Publikováno v: GEOPHYSICS. 86:EN39-EN50

Surface-wave methods are classically used to characterize shear (S-) wave velocities ([Formula: see text]) of the shallow subsurface through the inversion of dispersion curves. When targeting 2D shallow structures with sharp lateral heterogeneity, wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::78571e31c8bff5bc7826ccb9503a4c3a
https://doi.org/10.1190/geo2020-0096.1

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Identifying recharge under subtle ephemeral features in a flat-lying semi-arid region using a combined geophysical approach

Autor: Okke Batelaan, Sylvain Pasquet, B. A. Flinchum, Luk Peeters, Eddie W. Banks, Michael Hatch

Publikováno v: Hydrology and Earth System Sciences, Vol 24, Pp 4353-4368 (2020)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f81389f3c32920fe22109f99193c98f
https://hess.copernicus.org/articles/24/4353/2020/hess-24-4353-2020.pdf

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Characterizing the Critical Zone Using Borehole and Surface Nuclear Magnetic Resonance

Autor: B. A. Flinchum, Andrew D. Parsekian, W. Steven Holbrook, Bradley J. Carr

Publikováno v: Vadose Zone Journal, Vol 18, Iss 1 (2019)

Understanding critical zone (CZ) structure below the first few meters of Earth’s surface is challenging and yet important to understand hydrologic and surface processes that influence life on Earth. Nuclear magnetic resonance (NMR) is an emerging g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2e38f3ddf2df10eef47f99542325930
https://doi.org/10.2136/vzj2018.12.0209

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