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| Titel |
Backward reconstruction of plankton sources in the Gulf of Naples |
| VerfasserIn |
Daniela Cianelli, Domenico D'Alelio, Pierpaolo Falco, Maurizio Ribera d'Alcalà, Enrico Zambianchi |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250107533
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| Publikation (Nr.) |
 EGU/EGU2015-7236.pdf |
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| Zusammenfassung |
| The Gulf of Naples (GoN) is a coastal area of the Southern Tyrrhenian Sea representing a
very complex system, influenced by numerous interacting factors depending on the peculiar
physical and biogeochemical conditions of this area. Since 2004 a system of HF coastal
radars (Sea Sonde CODAR) operates in the GoN providing real time (hourly data) surface
current fields with a resolution of 1.0 x 1.0 Km over almost the entire area of the
GoN.
Moreover plankton abundance in the GoN is monitored weekly at the Long-Term
Ecological Research station MareChiara (LTER-MC) since 1984. An oscillating population
dynamics, with an alternation, especially in summer, between phases reflecting the coastal
and offshore influence on the biological community, has been frequently observed at
LTER-MC station.
Such an opportunity to integrate biological data and current measurements at high spatio
– temporal resolution, makes the GoN a natural laboratory to investigate the role of surface
circulation in structuring the marine plankton community.
The results here presented refer to a year-long analysis carried out for 2009, which was
characterized by a very accurate estimate of the surface dynamics, with a reduced number of
HF radar data gaps. A Lagrangian particle transport model, forced by the HF radar current
fields, has been applied to identify probable sources and transport pathways of plankton
at LTER-MC station. In particular a backward-trajectory modeling approach has
been used to reconstruct a probability distribution function around the LTER-MC
station.
The results from the backward trajectory simulations allowed to identify origin of
plankton observed at LTER-MC; the surface dynamics analysis accounted for the relationship
between the inter-annual alternation in the plankton community and the variability in the
wind-driven circulation. |
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