Continental slope sea level and flow variability induced by lateral movements of the Gulf Stream in the Middle Atlantic Bight (Articolo in rivista)

Type

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

Label

• Continental slope sea level and flow variability induced by lateral movements of the Gulf Stream in the Middle Atlantic Bight (Articolo in rivista) (literal)

Anno

• 2006-01-01T00:00:00+01:00 (literal)

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

• 10.1016/j.pocean.2006.07.005 (literal)

Alternative label

• Böhm E.; Hopkins T. S.; Pietrafesa, L. J.; Churchill, J. H. (2006)
  Continental slope sea level and flow variability induced by lateral movements of the Gulf Stream in the Middle Atlantic Bight
  in Progress in Oceanography
  (literal)

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

• Böhm E.; Hopkins T. S.; Pietrafesa, L. J.; Churchill, J. H. (literal)

Pagina inizio

• 196 (literal)

Pagina fine

• 212 (literal)

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

• 70 (literal)

Rivista

• Progress in Oceanography (Rivista)

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

• 2-4 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• Institute of Atmospheric Sciences and Climate, Italian National Research Council, I-00133 Rome, Italy Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695-8201, USA College of Physical & Mathematical Sciences, North Carolina State University, Raleigh, NC 27695-8201, USA Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA (literal)

Titolo

• Continental slope sea level and flow variability induced by lateral movements of the Gulf Stream in the Middle Atlantic Bight (literal)

Abstract

• As described by [Csanady, G.T., Hamilton, P., 1988. Circulation of slope water. Continental Shelf Research 8, 565–624], the flow regime over the slope of the southern Middle Atlantic Bight (MAB) includes a current reversal in which southwestward flow over the upper and middle slope becomes entrained in the northeastward current adjacent to the Gulf Stream. In this paper we use satellite-derived data to quantify how lateral motions of the Gulf Stream impact this current system. In our analysis, the Gulf Stream’s thermal front is delineated using a two-year time series of sea surface temperature derived from NOAA/AVHRR satellite data. Lateral motions of the Gulf Stream are represented in terms of temporal variations of the area, east of 73°W, between the Gulf Stream thermal front and the shelf edge. Variations of slope water flow within this area are represented by anomalies of geostrophic velocity as derived from the time series of the sea level anomaly determined from TOPEX/POSEIDON satellite altimeter data. A strong statistical relationship is found between Gulf Stream displacements and parabathic flow over the continental slope. It is such that the southwestward flow over the slope is accelerated when the Gulf Stream is relatively far from the shelf edge, and is decelerated (and perhaps even reversed) when the Gulf Stream is close to the shelf edge. This relationship between Gulf Stream displacements and parabathic flow is also observed in numerical simulations produced by the Miami Isopycnic Coordinate Model. In qualitative terms, it is consistent with the notion that when the Gulf Stream is closer to the 200-m isobath, it is capable of entraining a larger fraction of shelf water masses. Alternatively, when the Gulf Stream is far from the shelf-break, more water is advected into the MAB slope region from the northeast. Analysis of the diabathic flow indicates that much of the cross-slope transport by which the southwestward flow entering the study region is transferred to the northeastward flow exiting the region occurs in a narrow band roughly centered at 36.75°N, order 150 km north of Cape Hatteras. This transport, and thus the cyclonic circulation of the southern MAB, strengthens when the Gulf Stream is relatively close to the shelf edge, and weakens when the Gulf Stream is far from the shelf edge. (literal)

Prodotto di

• dinamica marina e produttività biologica da misure satellitari (TA.P04.017.003) (Modulo)
• Institute of atmospheric sciences and climate (ISAC) (Istituto)

Autore CNR

• EMANUELE BOHM (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Continental slope sea level and flow variability induced by lateral movements of the Gulf Stream in the Middle Atlantic Bight" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute of atmospheric sciences and climate (ISAC) (Istituto)
• dinamica marina e produttività biologica da misure satellitari (TA.P04.017.003) (Modulo)

Autore CNR di

• EMANUELE BOHM (Unità di personale interno)

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

• Progress in Oceanography (Rivista)

Insieme di parole chiave di

• Parole chiave di "Continental slope sea level and flow variability induced by lateral movements of the Gulf Stream in the Middle Atlantic Bight" (Insieme di parole chiave)