Particle fluxes in the deep Eastern Mediterranean basins: the role of ocean vertical velocities (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Particle fluxes in the deep Eastern Mediterranean basins: the role of ocean vertical velocities (Articolo in rivista) (literal)

Anno

• 2009-01-01T00:00:00+01:00 (literal)

Alternative label

• Patara, L; Pinardi, N; Corselli, C; Malinverno, E, Tonani, M, Santoleri R; Masina S (2009)
  Particle fluxes in the deep Eastern Mediterranean basins: the role of ocean vertical velocities
  in Biogeosciences (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Patara, L; Pinardi, N; Corselli, C; Malinverno, E, Tonani, M, Santoleri R; Masina S (literal)

Pagina inizio

• 333 (literal)

Pagina fine

• 348 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 6 (literal)

Rivista

• Biogeosciences (Rivista)

Note

• ISI Web of Science (WOS) (literal)
• Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1Centro Euro-Mediterraneo per i Cambiamenti Climatici (CMCC), Viale Aldo Moro 44, 40127 Bologna, Italy 2Laboratorio SINCEM, Universit`a di Bologna, Via S. Alberto 163, 48100 Ravenna, Italy 3Dipartimento di Scienze Geologiche e Geotecnologie, Universit`a Milano-Bicocca, Piazza della Scienza 4, 20126 Milan, Italy 4Istituto Nazionale di Geofisica e Vulcanologia (INGV), Viale Aldo Moro 44, 40127 Bologna, Italy 5Istituto di Scienze dell'Atmosfera e del Clima - C.N.R., Via del Fosso del Cavaliere 100, 00133 Rome, Italy (literal)

Titolo

• Particle fluxes in the deep Eastern Mediterranean basins: the role of ocean vertical velocities (literal)

Abstract

• This paper analyzes the relationship between deep sedimentary fluxes and ocean current vertical velocities in an offshore area of the Ionian Sea, the deepest basin of the Eastern Mediterranean Sea. Sediment trap data are collected at 500m and 2800m depth in two successive moorings covering the period September 1999-May 2001. A tight coupling is observed between the upper and deep traps and the estimated particle sinking rates are more than 200mday-1. The current vertical velocity field is computed from a 1/16×1/16 Ocean General Circulation Model simulation and from the wind stress curl. Current vertical velocities are larger and more variable than Ekman vertical velocities, yet the general patterns are alike. Current vertical velocities are generally smaller than 1mday-1: we therefore exclude a direct effect of downward velocities in determining high sedimentation rates. However we find that upward velocities in the subsurface layers of the water column are positively correlated with deep particle fluxes. We thus hypothesize that upwelling would produce an increase in upper ocean nutrient levels - thus stimulating primary production and grazing - a few weeks before an enhanced vertical flux is found in the sediment traps. High particle sedimentation rates may be attained by means of rapidly sinking fecal pellets produced by gelatinous macro-zooplankton. Other sedimentation mechanisms, such as dust deposition, are also considered in explaining large pulses of deep particle fluxes. (literal)

Prodotto di

• dinamica marina e produttività biologica da misure satellitari (TA.P04.017.003) (Modulo)
• Osservazioni e monitoraggio del mare da dati satellitari (TA.P07.016.003) (Modulo)
• Institute of atmospheric sciences and climate (ISAC) (Istituto)

Autore CNR

• ROSALIA SANTOLERI (Unità di personale interno)

Incoming links:

Prodotto

• Institute of atmospheric sciences and climate (ISAC) (Istituto)
• dinamica marina e produttività biologica da misure satellitari (TA.P04.017.003) (Modulo)
• Osservazioni e monitoraggio del mare da dati satellitari (TA.P07.016.003) (Modulo)

Autore CNR di

• ROSALIA SANTOLERI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Biogeosciences (Rivista)