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| Titel |
On the estimation of tidal and subinertial alongshore water transport from onshore telluric field measurements |
| VerfasserIn |
Martinho Marta-Almeida, Fernando Santos, Jesus Dubert, Rita Nolasco, Ivo Bernardo, Antonio Soares, Alvaro Peliz, Joao Dias |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250042372
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| Zusammenfassung |
| Onshore measurements of telluric field oscillations have been used to estimate the water
transport associated to tidal flow in the western Portuguese coast. The onshore E-W dipoles
located at São Jacinto and Sines were calibrated by comparing the ocean modelled N-S shelf
water transport originated by the main lunar tidal frequency and the corresponding onshore
motionally tidal electric field. Calibration factors of 3.00Ã104 and 4.25Ã103 m3 s-1 for each
mV km-1, with motionally induced origin, were estimated for São Jacinto and Sines,
respectively. The results showed that it is possible to estimate the water transport from
onshore measurements. The possibility of estimate subinertial alongshelf flow was also
assessed, concluding that due to the lack of periodicities controlling that flow is not possible
to establish a relationship between alongshelf transports and measured electric potential
difference. |
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