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The impact of equatorial Pacific tropical instability waves on hydrography and nutrients: 2004-2005

Citation

Strutton, PG and Palacz, AP and Dugdale, RC and Chai, F and Marchi, A and Parker, AE and Hogue, V and Wilkerson, FP, The impact of equatorial Pacific tropical instability waves on hydrography and nutrients: 2004-2005, Deep-Sea Research. Part 2: Topical Studies in Oceanography, 58, (3-4) pp. 284-295. ISSN 0967-0645 (2011) [Refereed Article]


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DOI: doi:10.1016/j.dsr2.2010.08.015

Abstract

This paperdocumentsthevariabilityinphysicsandnutrientsduringtwocruisesspanning1101W to 1401W inDecember2004andSeptember2005.Thegoalofthisworkistosetthehydrographic frameworkforcompanionpaperswhichquantifytheroleofiron,siliconandgrazinginmaintainingthe high nitrate,lowchlorophyll(HNLC)conditionsintheequatorialPacific.Thetwocruiseswere conductedalmostayearapart,atdifferentphasesoftheElNin˜o cycle,butduringsimilarlyintense tropicalinstabilitywave(TIW)seasons.Thehigherphytoplanktonbiomassobservedonthe2005cruise was duetoacombinationoftimeofyearandaweakeningElNin˜ o. AgeneralrelationshipbetweenTIWs and Sicyclingisdescribed.TIWsadvecttheequatorialupwellingplumealternatelytothenorthand south, andalsogeneratelocalizedenhancedupwelling.Thedistortedupwellingplumeisaregion of enhancedbiogenicsilicaproductionandexport.Awayfromregionsofactiveupwelling, Si remineralizationisenhancedandexportissignificantlyreducedorabsent.

Item Details

Item Type:Refereed Article
Keywords:biological oceanography
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Biological Oceanography
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Strutton, PG (Associate Professor Peter Strutton)
ID Code:76098
Year Published:2011
Web of Science® Times Cited:19
Deposited By:IMAS Research and Education Centre
Deposited On:2012-02-28
Last Modified:2017-10-31
Downloads:0

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