Global database of surface ocean particulate organic carbon export fluxes diagnosed from the 234Th technique

Through the processes of the biological pump, carbon is exported to the deep ocean in the form of dissolved and particulate organic matter. There are several ways by which downward export fluxes can be estimated. The great attraction of the 234Th technique is that its fundamental operation allows a downward flux rate to be determined from a single water column profile of thorium coupled to an estimate of POC/234Th ratio in sinking matter. We present a database of 723 estimates of organic carbon export from the surface ocean derived from the 234Th technique. Data were collected from tables in papers published between 1985 and 2013 only. We also present sampling dates, publication dates and sampling areas. Most of the open ocean Longhurst provinces are represented by several measurements. However, the Western Pacific, the Atlantic Arctic, South Pacific and the South Indian Ocean are not well represented. There is a variety of integration depths ranging from surface to 220m. Globally the fluxes ranged from -22 to 125 mmol of C/m**2/d. We believe that this database is important for providing new global estimate of the magnitude of the biological carbon pump.

Carbon and nitrogen content of marine pore waters

We have developed sampling methods and an analytical system to determine the concentration of dissolved organic C (DOC) in marine pore waters. Our analytical approach is a modification of recently developed high-temperature, Pt-catalyzed oxidation methods; it uses Chromatographic trapping of the DOC-derived CO2 followed by reduction to CH4 and flame ionization detection. Sampling experiments with nearshore sediments indicate that pore-water separation by whole-core squeezing causes artificially elevated DOC concentrations, while pore-water recovery by sectioning and centrifugation does not appear to introduce DOC artifacts. Results from a set of northwestern Atlantic continental slope cores suggest that net DOC production accounts for >50% of the organic C that is recycled at the sediment-water interface.

Fábulas americanas : en consonancia con los usos, costumbres e historia natural del país /

Poems.

Branched Cross

Hans Rutenzwig; 1 ft. 7 11/16 in.x 7 3/32 in.x 6 17/32 in.; engraved, chased and partially gilded silver and pearls

Saint Anthony of Padua

Maso di Banco; 2 ft. 5 1/4 in.x 1 ft. 3 63/64 in.; tempera on wood, gold ground

The civil engineer's pocket-book,

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Haec accurata recognitio trium voluminum operum clariss. P. Nicolai Cusae Card. ...

Adams,

Ioannis Iouiani Pontani Opera ...

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Aeneae Syluii Senensis S. Rom. Ecclesiae cardinalis tituli S. Sabinae De Bohemorum et ex his Imperatorum aliquot origine ac gestis ... Historia.

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[Commentariorum Aeneae Sylvii Piccolominei Senensis, de Concilio Basileae celebrato libri duo, olim quidem scripti, nunc vero primum impressi, in quibus sic illam synodum depingit, sic quicquid illic actum est, bona fide refert ... cum multis aliis nunquam antehac impressis ...]

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Epistole [et] varij tractat[us] Pij secu[n]di po[n]tificis maximi ...

CCBE S. XVI,

Die Sprache John Audelay's (Laut- und Flexionslehre).

Lebenslauf.

Francisci Guicciardini ... Historiarum sui temporis libri viginti : ex italico in latinum sermonem nunc primùm [et] conuersi [et] editi /

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Ioannis Iouiani Pontani carminum, quae quidem extant omnium. Tomus quartus ...

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