Joint inversion of gravity and cosmic ray muon flux at a well-characterised site for shallow subsurface density prediction
Abstract
Estimating subsurface density is important for imaging various geologic structures such as volcanic edifices, reservoirs, and aquifers. Muon tomography has recently been used to complement traditional gravity measurements as a powerful method for probing shallow subsurface density structure beneath volcanoes. Gravity and muon data have markedly different spatial sensitivities and, as a result, the combination is useful for imaging structures on spatial scales that are larger than the area encompassed by crossing muon trajectories. Here we explore and test a joint inversion of gravity and muon data in a study area where there is an independently-characterised target anomaly: a regionally extensive, high-density layer beneath Los Alamos, New Mexico, USA. We resolve the nearly flat-lying structure using a unique experimental set-up wherein surface and subsurface gravity and muon measurements are obtained above and below the target volume. Our results show that with minimal geologic (prior) constraints, the joint inversion correctly recovers salient features of the expected density structure. The results of our study illustrate the potential of combining surface and subsurface (e.g., borehole) gravity and muon measurements to invert for shallow geologic structures.
- Authors:
-
- Univ. of New Mexico, Albuquerque, NM (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1501805
- Report Number(s):
- LA-UR-18-23891
Journal ID: ISSN 0956-540X
- Grant/Contract Number:
- 89233218CNA000001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Geophysical Journal International
- Additional Journal Information:
- Journal Volume: 217; Journal Issue: 3; Journal ID: ISSN 0956-540X
- Publisher:
- Oxford University Press
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; Muon imaging; gravity modeling; joint inversion
Citation Formats
Cosburn, Katherine, Roy, Mousumi, Guardincerri, Elena, and Rowe, Charlotte. Joint inversion of gravity and cosmic ray muon flux at a well-characterised site for shallow subsurface density prediction. United States: N. p., 2019.
Web. doi:10.1093/gji/ggz127.
Cosburn, Katherine, Roy, Mousumi, Guardincerri, Elena, & Rowe, Charlotte. Joint inversion of gravity and cosmic ray muon flux at a well-characterised site for shallow subsurface density prediction. United States. https://doi.org/10.1093/gji/ggz127
Cosburn, Katherine, Roy, Mousumi, Guardincerri, Elena, and Rowe, Charlotte. Fri .
"Joint inversion of gravity and cosmic ray muon flux at a well-characterised site for shallow subsurface density prediction". United States. https://doi.org/10.1093/gji/ggz127. https://www.osti.gov/servlets/purl/1501805.
@article{osti_1501805,
title = {Joint inversion of gravity and cosmic ray muon flux at a well-characterised site for shallow subsurface density prediction},
author = {Cosburn, Katherine and Roy, Mousumi and Guardincerri, Elena and Rowe, Charlotte},
abstractNote = {Estimating subsurface density is important for imaging various geologic structures such as volcanic edifices, reservoirs, and aquifers. Muon tomography has recently been used to complement traditional gravity measurements as a powerful method for probing shallow subsurface density structure beneath volcanoes. Gravity and muon data have markedly different spatial sensitivities and, as a result, the combination is useful for imaging structures on spatial scales that are larger than the area encompassed by crossing muon trajectories. Here we explore and test a joint inversion of gravity and muon data in a study area where there is an independently-characterised target anomaly: a regionally extensive, high-density layer beneath Los Alamos, New Mexico, USA. We resolve the nearly flat-lying structure using a unique experimental set-up wherein surface and subsurface gravity and muon measurements are obtained above and below the target volume. Our results show that with minimal geologic (prior) constraints, the joint inversion correctly recovers salient features of the expected density structure. The results of our study illustrate the potential of combining surface and subsurface (e.g., borehole) gravity and muon measurements to invert for shallow geologic structures.},
doi = {10.1093/gji/ggz127},
journal = {Geophysical Journal International},
number = 3,
volume = 217,
place = {United States},
year = {Fri Mar 08 00:00:00 EST 2019},
month = {Fri Mar 08 00:00:00 EST 2019}
}
Web of Science
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Works referencing / citing this record:
Bayesian joint muographic and gravimetric inversion applied to volcanoes
journal, July 2019
- Barnoud, Anne; Cayol, Valérie; Niess, Valentin
- Geophysical Journal International, Vol. 218, Issue 3