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| Titel |
Lagrangian study of surface transport in the Kuroshio Extension area based on simulation of propagation of Fukushima-derived radionuclides |
| VerfasserIn |
S. V. Prants, M. V. Budyansky, M. Yu. Uleysky |
| 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 ; 21, no. 1 ; Nr. 21, no. 1 (2014-02-24), S.279-289 |
| Datensatznummer |
250120891
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| Publikation (Nr.) |
 copernicus.org/npg-21-279-2014.pdf |
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| Zusammenfassung |
| Lagrangian approach is applied to study near-surface large-scale transport in
the Kuroshio Extension area using a simulation with synthetic particles
advected by AVISO altimetric velocity field. A material line technique is
proposed and applied to find out the origin of water masses in cold-core
cyclonic rings pinched off from the jet in summer 2011. Tracking and
Lagrangian maps provide the evidence of cross-jet transport. Fukushima-derived
caesium isotopes are used as Lagrangian tracers to study transport
and mixing in the area a few months after the 11 March 2011 tsunami that
caused heavy damage of the Fukushima Nuclear Power Plant (FNPP). Tracking
maps are computed to trace the origin of water parcels with measured levels
of 134Cs and 137Cs concentrations collected during two research vessel
(R/V) cruises in June and July 2011 in the large area of the northwest
Pacific (Kaeriyama et al., 2013; Buesseler et al., 2012). It is shown that Lagrangian
simulations are useful for finding the surface areas that are potentially
dangerous due to the risk of radioactive contamination. The results of
simulation are supported by tracks of the surface drifters that were
deployed in the area. |
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