DOI: 10.1002/grl.50765
论文题名: Systematic ENSO-driven nutrient variability recorded by central equatorial Pacific corals
作者: LaVigne M. ; Nurhati I.S. ; Cobb K.M. ; McGregor H.V. ; Sinclair D. ; Sherrell R.M.
刊名: Geophysical Research Letters
ISSN: 0094-8701
EISSN: 1944-8432
出版年: 2013
卷: 40, 期: 15 起始页码: 3956
结束页码: 3961
语种: 英语
英文关键词: corals
; ENSO
; phosphate
; proxy
; upwelling
Scopus关键词: corals
; ENSO
; Phosphate concentration
; proxy
; Southern oscillation
; Temperature recovery
; upwelling
; Upwelling relaxation
; Atmospheric pressure
; Phosphates
; Nutrients
; carbon cycle
; concentration (composition)
; coral
; El Nino-Southern Oscillation
; nutrient budget
; satellite imagery
; upwelling
; Christmas Island
; Fanning Island
; Line Islands
; Pacific Ocean
; Pacific Ocean (Equatorial)
; Anthozoa
; Porites
; Scleractinia
英文摘要: Variations in ocean productivity are driven largely by nutrient supply to the photic zone, but temporal records of nutrient variability are sparse. Here we show scleractinian coral P/Ca proxy records of variations in phosphate concentrations during El Niño Southern Oscillation (ENSO) cycles in the central equatorial Pacific. Covarying P/Ca records in Porites corals from Christmas and Fanning Islands show a regional ∼40% decrease during the upwelling relaxation of the 1997-1998 El Niño, consistent with less frequent nutrient measurements from this area. Similar ∼35-45% skeletal P/Ca decreases occur during the 1982-1983 and 1986-1987 El Niño events, which predate satellite color and regional nutrient measurements. After each El Niño event, nutrient increases lag temperature recovery by 4-12 months, likely reflecting uptake by massive phytoplankton blooms that followed resumption of upwelling. The results support the utility of coral P/Ca to probe the mechanisms linking ENSO, equatorial upwelling, and carbon cycling in the past. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881177751&doi=10.1002%2fgrl.50765&partnerID=40&md5=d31a2d8ed52abfe6eaa3c2c3c731f00e
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5965
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Earth and Oceanographic Science, Bowdoin College, 6800 College Station, Brunswick, ME 04011, United States
Recommended Citation:
LaVigne M.,Nurhati I.S.,Cobb K.M.,et al. Systematic ENSO-driven nutrient variability recorded by central equatorial Pacific corals[J]. Geophysical Research Letters,2013-01-01,40(15).