De Ridder, S orcid.org/0000-0002-0797-7442 and Maddison, JR (2017) Wave field inversion of ambient seismic noise. In: 79th EAGE Conference and Exhibition 2017 - Workshops. 79th EAGE Conference & Exhibition 2017, 12 Jun 2017 - 15 Jun 2021, Paris, France. ISBN 978-94-6282-219-1
Abstract
We formulate a full wave field inversion for ambient seismic noise recorded by large and dense seismograph arrays. Full wave field inversion exploits the constraints on the gradients of the wave field that array data inherently possess (the sum is greater than its parts). Consequently, we can relax the spatial and temporal constraints on the wave field source functions in the seismological inverse problem. The result is that we become insensitive to the noise sources in, and changing character of, the ambient seismic field. In principle the formulation holds equally for ambient noise wave fields and for wave fields excited by controlled sources. We support the theory with examples in one dimension in the time domain, and in two dimensions in the frequency domain. The latter being of interest to invert surface wave ambient noise for phase velocity maps. We include checker board tests for geometries mimicking USArray and Ocean Bottom Cables.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Institute for Applied Geosciences (IAG) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Jun 2021 07:47 |
Last Modified: | 14 Jun 2021 07:47 |
Status: | Published |
Identification Number: | 10.3997/2214-4609.201701687 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:174896 |