| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
High resolution seismic imaging of the ocean structure using a small volume airgun source array in the Gulf of Cadiz
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| Autores: |
Geli, Louis
Cosquer, Emmanuel
Hobbs, R. W.
Klaeschen, D.
Papenberg, C.
Thomas, Yannick
Menesguen, Claire
Hua, Bach-lien
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| Data: |
2009-12
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| Ano: |
2009
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| Palavras-chave: |
High resolution
Seismics
Oceanography
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| Resumo: |
A small volume (117 cu-inch) seismic source producing signal predominantly in the 150-200 Hz frequency window was used during the GO calibration experiment in the Gulf of Cadiz (April-May 2007). The data show the small scale (< 10 m in the z direction) internal structure of the ocean. High-resolution images display seismic reflectors that often appear as distinct, horizontal, short (similar to a few hundred meters to a few km long) segments, lying at different depths, while low-resolution (similar to 20 to 30 Hz) display long, horizontal reflectors (similar to a few tens of km), sometimes linked by short, apparently "dipping" segments. The present data suggest that this apparent dipping effect is due to the insufficient separation power (similar to lambda/4) of the low resolution data. Improving high resolution acquisition systems hence appears to be a critical challenge to understand the seismic response of the ocean. Citation: Geli, L., E. Cosquer, R. W. Hobbs, D. Klaeschen, C. Papenberg, Y. Thomas, C. Menesguen, and B. L. Hua (2009), High resolution seismic imaging of the ocean structure using a small volume airgun source array in the Gulf of Cadiz, Geophys. Res. Lett., 36, L00D09, doi:10.1029/2009GL040820.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/2009/publication-7297.pdf
DOI:10.1029/2009GL040820
https://archimer.ifremer.fr/doc/00000/7297/
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| Editor: |
American Geophysical Union
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| Formato: |
application/pdf
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| Fonte: |
Geophysical Research Letters ( GRL ) (0094-8276) (American Geophysical Union), 2009-12 , Vol. 36 , N. L00D09 , P. 1-6
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| Direitos: |
2009 American Geophysical Union
info:eu-repo/semantics/openAccess
restricted use
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