DOI: 10.1016/j.quascirev.2013.07.003
Scopus记录号: 2-s2.0-84882639999
论文题名: Late Holocene climate variability from Lake Pupuke maar, Auckland, New Zealand
作者: Striewski B. ; Shulmeister J. ; Augustinus P.C. ; Soderholm J.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 77 起始页码: 46
结束页码: 54
语种: 英语
英文关键词: Auckland
; Changes of wind regime
; Diatom productivity
; El Nino-Southern Oscillation
; Lacustrine sediment sequences
; Lake Pupuke
; Laminae couplet thickness
; New Zealand
; Quasi-annual organo-diatomaceous laminae couplets
; Southern Ocean
; Spectral analysis
Scopus关键词: Auckland
; El Nino southern oscillation
; Lacustrine sediments
; Laminae couplet thickness
; New zealand
; Quasi-annual organo-diatomaceous laminae couplets
; Southern ocean
; Wind regime
; Atmospheric pressure
; Lakes
; Ocean currents
; Spectrum analysis
; Climatology
; airflow
; biological production
; climate variation
; diatom
; El Nino-Southern Oscillation
; eolian deposit
; Holocene
; lacustrine deposit
; lamination
; maar
; paleoclimate
; sedimentary sequence
; spectral analysis
; wind direction
; Auckland
; Lake Pupuke
; New Zealand
; North Island
英文摘要: Spectral analyses of quasi-annual organo-diatomaceous laminae couplets in an Auckland maar lake indicate brief (sub-decadal scale) episodes with strong spectral power and long periods of weak to no spectral power between c. 1700 to c. 550cal. yr BP. Laminae couplet thickness appears to be a function of changes in wind flow over the basin, with enhanced wind flow deepening the mixing zone and providing additional nutrients for laminae formation. Aeolian dust from Australia amplifies the wind signal. Spectral signals in the high power episodes are focused in <4 years and 6-8 years windows. These are consistent with El Niño-Southern Oscillation (ENSO) periodicity. This climate system is known to play a major role in the modern Auckland climate whereby strongly negative (positive) ENSO are associated with enhanced (diminished) SW airflow over Auckland. ENSO events interact in the modern climate and the spectral results indicate that this is the case when spectral power is strong in the laminae. These results highlight strong but intermittent ENSO activity between 600 and 1400cal. yr BP. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60562
Appears in Collections: 过去全球变化的重建
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作者单位: Geological Survey of Western Australia, Department of Mines and Petroleum, East Perth, WA 6004, Australia; Climate Research Group, School of Geography, Planning and Environmental Management, University of Queensland, St Lucia, QLD 4072, Australia; School of Environment, University of Auckland, Auckland 1142, New Zealand
Recommended Citation:
Striewski B.,Shulmeister J.,Augustinus P.C.,et al. Late Holocene climate variability from Lake Pupuke maar, Auckland, New Zealand[J]. Quaternary Science Reviews,2013-01-01,77