Source Separation and Medium Change of Contained Chemical Explosions from Coda Wave Interferometry
Differences in the seismic coda of neighboring events can be used to investigate source location offsets and medium change with coda wave interferometry (CWI). We employ CWI to infer the known relative location between two chemical explosions in Phase I of the Source Physics Experiment (SPE). The in...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Seismological Society of America
2021-04-01
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| Series: | The Seismic Record |
| Online Access: | https://doi.org/10.1785/0320210002 |
| _version_ | 1797359306240163840 |
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| author | Sean R. Ford William R. Walter |
| author_facet | Sean R. Ford William R. Walter |
| author_sort | Sean R. Ford |
| collection | DOAJ |
| description | Differences in the seismic coda of neighboring events can be used to investigate source location offsets and medium change with coda wave interferometry (CWI). We employ CWI to infer the known relative location between two chemical explosions in Phase I of the Source Physics Experiment (SPE). The inferred displacement between the first, SPE-1, and second, SPE-2, chemical explosion is between 6 and 18 m, with an expectation of 9.2 m, where the known separation is close to 9.4 m. We also employ CWI to find any velocity perturbation due to damage from SPE-2, by comparing its coda with the collocated third SPE chemical explosion, SPE-3. We find that damage due to SPE-2 must be confined to a spherical region with radius less than 10 m and velocity perturbation less than 25%. |
| first_indexed | 2024-03-08T15:16:20Z |
| format | Article |
| id | doaj.art-8bfc071cc3864e0284913f38870ba2e3 |
| institution | Directory Open Access Journal |
| issn | 2694-4006 |
| language | English |
| last_indexed | 2024-03-08T15:16:20Z |
| publishDate | 2021-04-01 |
| publisher | Seismological Society of America |
| record_format | Article |
| series | The Seismic Record |
| spelling | doaj.art-8bfc071cc3864e0284913f38870ba2e32024-01-10T11:56:23ZengSeismological Society of AmericaThe Seismic Record2694-40062021-04-011131010.1785/032021000221002Source Separation and Medium Change of Contained Chemical Explosions from Coda Wave InterferometrySean R. Ford0https://orcid.org/0000-0002-0376-5792William R. Walter1https://orcid.org/0000-0002-0331-0616Lawrence Livermore National Laboratory, Livermore, California, U.S.A.Lawrence Livermore National Laboratory, Livermore, California, U.S.A.Differences in the seismic coda of neighboring events can be used to investigate source location offsets and medium change with coda wave interferometry (CWI). We employ CWI to infer the known relative location between two chemical explosions in Phase I of the Source Physics Experiment (SPE). The inferred displacement between the first, SPE-1, and second, SPE-2, chemical explosion is between 6 and 18 m, with an expectation of 9.2 m, where the known separation is close to 9.4 m. We also employ CWI to find any velocity perturbation due to damage from SPE-2, by comparing its coda with the collocated third SPE chemical explosion, SPE-3. We find that damage due to SPE-2 must be confined to a spherical region with radius less than 10 m and velocity perturbation less than 25%.https://doi.org/10.1785/0320210002 |
| spellingShingle | Sean R. Ford William R. Walter Source Separation and Medium Change of Contained Chemical Explosions from Coda Wave Interferometry The Seismic Record |
| title | Source Separation and Medium Change of Contained Chemical Explosions from Coda Wave Interferometry |
| title_full | Source Separation and Medium Change of Contained Chemical Explosions from Coda Wave Interferometry |
| title_fullStr | Source Separation and Medium Change of Contained Chemical Explosions from Coda Wave Interferometry |
| title_full_unstemmed | Source Separation and Medium Change of Contained Chemical Explosions from Coda Wave Interferometry |
| title_short | Source Separation and Medium Change of Contained Chemical Explosions from Coda Wave Interferometry |
| title_sort | source separation and medium change of contained chemical explosions from coda wave interferometry |
| url | https://doi.org/10.1785/0320210002 |
| work_keys_str_mv | AT seanrford sourceseparationandmediumchangeofcontainedchemicalexplosionsfromcodawaveinterferometry AT williamrwalter sourceseparationandmediumchangeofcontainedchemicalexplosionsfromcodawaveinterferometry |