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Evidence of El Nino and the Indian Ocean Dipole from Sr/Ca derived SSTs for modern corals at Christmas Island, eastern Indian Ocean

Marshall, Jerry; McCulloch, Malcolm

Description

While the El Nino/Southern Oscillation (ENSO) has been regarded as an almost exclusively Pacific Ocean phenomenon, there is a growing amount of evidence that there are interannual events in other ocean basins which are possibly related to ENSO. Here we describe results from Sr/Ca analysis of a 24 year coral record from Christmas Island in the tropical eastern Indian Ocean. The Sr/Ca data was matched with blended ship and satellite data from the region to produce the Sr/Ca-SST calibration. There...[Show more]

dc.contributor.authorMarshall, Jerry
dc.contributor.authorMcCulloch, Malcolm
dc.date.accessioned2015-12-13T23:27:11Z
dc.date.available2015-12-13T23:27:11Z
dc.identifier.issn0094-8276
dc.identifier.urihttp://hdl.handle.net/1885/93201
dc.description.abstractWhile the El Nino/Southern Oscillation (ENSO) has been regarded as an almost exclusively Pacific Ocean phenomenon, there is a growing amount of evidence that there are interannual events in other ocean basins which are possibly related to ENSO. Here we describe results from Sr/Ca analysis of a 24 year coral record from Christmas Island in the tropical eastern Indian Ocean. The Sr/Ca data was matched with blended ship and satellite data from the region to produce the Sr/Ca-SST calibration. There is evidence of both warm and cool SST anomalies in the Sr/Ca derived SSTs, with an extreme cooling event of 1994 relating to the unusual oceanographic conditions set up by the Indian Ocean Dipole (IOD) and warmer than normal SSTs corresponding with ENSO events in the Pacific.
dc.publisherAmerican Geophysical Union
dc.sourceGeophysical Research Letters
dc.subjectKeywords: Calcium; Oceanography; Strontium; Anomalies; Geophysics; calcium; coral record; El Nino-Southern Oscillation; sea surface temperature; strontium; Christmas Island; Indian Ocean
dc.titleEvidence of El Nino and the Indian Ocean Dipole from Sr/Ca derived SSTs for modern corals at Christmas Island, eastern Indian Ocean
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume28
dc.date.issued2001
local.identifier.absfor040605 - Palaeoclimatology
local.identifier.ariespublicationMigratedxPub26565
local.type.statusPublished Version
local.contributor.affiliationMarshall, Jerry, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationMcCulloch, Malcolm, College of Physical and Mathematical Sciences, ANU
local.bibliographicCitation.issue18
local.bibliographicCitation.startpage3453
local.bibliographicCitation.lastpage3456
local.identifier.doi10.1029/2001GL012978
dc.date.updated2015-12-12T09:49:25Z
local.identifier.scopusID2-s2.0-0035883293
CollectionsANU Research Publications

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