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| Titel |
Scaling properties of pH fluctuations in coastal waters of the English Channel: pH as a turbulent active scalar |
| VerfasserIn |
S. B. Zongo, F. G. Schmitt |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 18, no. 6 ; Nr. 18, no. 6 (2011-11-16), S.829-839 |
| Datensatznummer |
250013996
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| Publikation (Nr.) |
 copernicus.org/npg-18-829-2011.pdf |
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| Zusammenfassung |
| We consider here pH and temperature fluctuations in marine waters, recorded
at fixed points using high resolution automatic devices. We analyze time
series coming from 4 monitoring stations located along French coast: one
station is situated in the coastal area off Boulogne-sur-mer (Eastern English
Channel) and 3 stations in the Bay of Seine. All these pH time series reveal
large fluctuations at all scales similar to turbulent temperature
fluctuations. We compare the pH and temperature time series through Fourier
spectral analysis methods: spectra, compensated spectra, cospectra. We find
good scaling properties of pH fluctuations, with power spectral slopes close
to 1.5 for marine stations and 1.2 for the estuarine station. These analyses
show that pH fluctuations in marine waters are strongly influenced by
turbulent hydrodynamical transport, and may be considered as a turbulent
active scalar. |
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