CIRCOLAZIONE TERMOALINA PDF

ingranaggio della circolazione termoalina degli oceani. D’altra parte, l’upwel- ling costiero può indurre intensi flussi di calore nell’oceano, rendendo questo. Il picnoclino (dal greco πυκνός (puknòs), “denso”) è un sottile strato o una superficie che strati scorrono l’uno sull’altro dando luogo alla circolazione oceanica profonda (circolazione termoalina) con grande influenza sul clima globale. Anche gli oceani d’altra parte formano un tipo esclusivo di cella convettiva, ovvero la circolazione termoalina che è influenzata dal calore (termo) e dalla.

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Thermohaline circulation – Wikidata

The circulation has two stable states. The deep circulation influences Earth’s heat budget and climate. Estratto da ” https: Information contained in the Greenland and Cirfolazione ice sheets and in north Atlantic sediments provide important clues.

Download Presentation Connecting to Server. Manifestazioni sistemiche delle epatopatie.

Email Presentation to Friend. Similar fluctuations during the last interglacial appear to have caused rapid, large changes in circolaziione. URL consultato il 10 marzo archiviato dall’ url originale il 21 luglio Cool water flows along the bottom and upwells towards low latitudes.

Data from cores through the Greenland ice sheet 1deep-sea sediments 2,3and alpine-lake sediments 4 indicate that: It varies on time scales from decades to centuries to millennia, and this variability is thought to modulate climate over such time intervals. Dal sono disponibili misurazioni mediante satelliti meteorologici. Le stazioni idrologiche sono date in alto, ed i transporti sono relativi a 3, dbar.

Contour plot of salinity as a function of depth in the western basins of the Atlantic from the Arctic Ocean to Antarctica. Menu di navigazione Strumenti personali Accesso non effettuato discussioni contributi registrati entra.

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File:Circulacion – Wikimedia Commons

Integrating this equation from the bottom of the ocean to the top of the abyssal circulation layer gives: The switching on and off of the meridional overturning circulation has large hysteresis Figure Il regno delle monere.

Thermohaline circulation Most of northward, warm water flow is through the western boundary current because surface flow elsewhere wind-driven is southward. Oceanic Transport of Heat The oceans carry about half the heat from the tropics to high latitudes required to maintain Earth’s temperature.

RevisitedSpringer,p. Le misure di temperatura superficiale del mare si limitano alla porzione superiore del mare nota come near-surface layer, alla lettera, strato vicino alla superficie [2].

T-S plots of water in the various ocean basins.

File:Circulacion termohalina.jpg

T-S plot of data collected at various latitudes in the western basins of the south Atlantic. Some sinks and returns southward as a cold, deep, western-boundary current. La temperatura superficiale marina subisce cambiamenti su scala giornaliera, ma in misura assai minore rispetto alla temperatura della massa d’aria sovrastante a causa del calore specifico maggiore dell’acqua rispetto all’aria.

The deep water later upwells in other regions and in other oceans, and eventually makes its way back to the Gulf Stream and the north Atlantic. The volume of deep water is far larger than the volume of surface water. Win – OpenSees. Reynolds, Accuracy of in situ sea surface temperatures used to calibrate infrared satellite measurements PDFin Journal of Geophysical Researchvol.

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Circolazione termoalina, profonda e delle alte latitudini.

Note that the flow is constrained by the deep mid-ocean ridge system. La fatturazione delle operazioni e la detrazione IVA. Altri progetti Wikimedia Commons.

The return to normal salinity does not cause the circulation to turn on. La temperatura superficiale marina, proprio come la temperatura dell’aria, varia al variare dell’altezza del sole sull’orizzonte variazione giornalierama in misura molto minore a causa del maggiore calore specifico dell’acqua [11]. Nel sono stati pubblicati i primi dati sulle misurazioni effettuate [5].

From Lynn and Reid Thermohaline circulation Result of the differential heating and cooling, and freshening and salting i.

Metabolismo delle proteine. Mixing among three water masses produces intersecting lines on a T-S plot, and the ciircolazione at the intersection is rounded by further mixing. Although currents in the deep ocean are relatively weak, they have transports comparable to the surface transports.

Result of the differential heating and cooling, and freshening and salting. The North Atlantic Current brings warm circklazione northward where it cools.

Antarctic Circumpolar Current Figura The same data, but salinity is plotted as a function of temperature in a T-S plot.

The ocean may be the primary cause of variability over times ranging from years to decades, and it may have helped modulate ice-age climate. Geerts, Lake Effect Snow. Temperature and salinity plotted as a function of depth.