Water masses in the thermocline of the coral sea

Tomczak, Matthias; Hao, Do Manh

doi:10.1016/0198-0149(89)90054-x

Cited by 27 publications

(31 citation statements)

References 9 publications

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“…Tomczak and Hao, (1989) and Solokov and Rintoul, (2000) showed that SLW (or SPEW) was transported eastward from the central part of the Pacific and had a strong influence on the water masses in the Coral Sea and the Solomon Sea. Solokov and Rintoul, (2000) showed that SEC transport 55 Sv toward the Coral Sea, with a transport concentrated in the upper thermocline.…”

Section: Westward Transport Of the Negative N* Signalmentioning

confidence: 99%

“…In the WTSP, the upper thermocline waters are characterized by maximum subsurface salinity (Tomczak and Hao 1989;Donguy 1994;Donguy and Henin 1997) and the underlying waters of the permanent thermocline are marked by wide range 165 of temperature and salinity (Emery and Meincke, 1986;Sprintall and Tomczak, 1992;Tomczak and Godfrey, 1994 …”

Section: Calculation Of N*mentioning

confidence: 99%

“…Water (SLW) (Wyrtki, 1962a;Solokov and Rintoul, 2000) or the South Pacific Equatorial Water (SPEW) (Donguy and Henin, 1977;Emery and Meincke, 1986;Tomczak and Hao, 1989;Donguy, 1994) and had a density between 24.4 and 24.8 and a 465 high salinity (>35.7) in the Coral Sea. Tomczak and Hao, (1989) and Solokov and Rintoul, (2000) showed that SLW (or SPEW) was transported eastward from the central part of the Pacific and had a strong influence on the water masses in the Coral Sea and the Solomon Sea.…”

Section: Westward Transport Of the Negative N* Signalmentioning

confidence: 99%

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Excess nitrogen as a marker of intense dinitrogen fixation in the Western Tropical South Pacific Ocean: impact on the thermocline waters of the South Pacific

Fumenia

Moutin

Bonnet

et al. 2018

Preprint

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Abstract. As part of the Oligotrophy to UlTra-oligotrophy PACific Experiment cruise, which took place in the Western 15Tropical South Pacific during the austral summer (March-April 2015), we present data on nitrate, phosphate and on particulate and dissolved organic matter. The stoichiometric nitrogen-to-phosphorus ratios of the inorganic and organic material and the tracer N* are described. N* allows to trace changes in the proportion of fixed nitrogen due to diazotrophy and/or denitrification.Our results showed that the Melanesian archipelago waters between 160° E and 170° W are characterized by a deficit of nitrate and phosphate in the productive layer, significant dinitrogen fixation rates and an excess of particulate organic nitrogen 20 compared to the canonical ratio of Redfield. A positive N* anomaly was observed in the productive layer reflecting the combined effect of phosphate uptake by diazotrophic organisms and remineralization of excess particulate organic nitrogen.The South Pacific Gyre waters between 170° W and 160° W were depleted in nitrate but rich in phosphate. Surface waters exhibited very low dinitrogen fixation rates, an absence of excess particulate organic nitrogen and a N* signal close to zero.The higher iron availability coupled with an absence of nitrate in the suface water of the Melanesian archipelago could 25 stimulate the diazotrophic activity, which in turn will introduce excess nitrogen, deplete the surface waters in phosphate and be the explanation for the positive N* anomaly in the Melanesian archipelago waters. In the thermocline waters, the N* tracer revealed its full complexity, with notably the cumulative effect of the remineralization of particulate organic nitrogen and the

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Section: Westward Transport Of the Negative N* Signalmentioning

confidence: 99%

Section: Calculation Of N*mentioning

confidence: 99%

Section: Westward Transport Of the Negative N* Signalmentioning

confidence: 99%

See 1 more Smart Citation

Excess nitrogen as a marker of intense dinitrogen fixation in the Western Tropical South Pacific Ocean: impact on the thermocline waters of the South Pacific

Fumenia

Moutin

Bonnet

et al. 2018

Preprint

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“…The origin of PEW is not made clear by Tomczak and Hao (1989), though they suggest if forms in the Equatorial currents via mixing, possibly of waters from both hemispheres. n…”

mentioning

confidence: 99%

“…Extending the work of Tomczak and Hao (1989), two distinct water masses occupy the thermocline in the Western Coral Sea, and are separated by a sharp front. Both PEW and WSPCW flow across the section in mid-basin, one circulating to the north in the anticyclonic gyre in the Gulf of Papua, while the other flowing out over the Queensland Trough and Plateau.…”

mentioning

confidence: 99%

Exchanges between hemispheres and gyres : a direct approach to the mean circulation of the equatorial Pacific

Wijffels¹

1993

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Mean circulation of the Coral Sea

Kessler

Cravatte

2013

JGR Oceans

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Water masses in the thermocline of the coral sea

Cited by 27 publications

References 9 publications

Excess nitrogen as a marker of intense dinitrogen fixation in the Western Tropical South Pacific Ocean: impact on the thermocline waters of the South Pacific

Excess nitrogen as a marker of intense dinitrogen fixation in the Western Tropical South Pacific Ocean: impact on the thermocline waters of the South Pacific

Exchanges between hemispheres and gyres : a direct approach to the mean circulation of the equatorial Pacific

Mean circulation of the Coral Sea

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