Scopus记录号: 2-s2.0-85061043150
论文题名: Classifying past climate change in the Chew Bahir basin, southern Ethiopia, using recurrence quantification analysis
作者: Trauth M.H. ; Asrat A. ; Duesing W. ; Foerster V. ; Kraemer K.H. ; Marwan N. ; Maslin M.A. ; Schaebitz F.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2019
语种: 英语
英文关键词: Eastern Africa
; Holocene
; Paleoclimate dynamics
; Pleistocene
; Recurrence plot
; Time-series analysis
英文摘要: The Chew Bahir Drilling Project (CBDP) aims to test possible linkages between climate and evolution in Africa through the analysis of sediment cores that have recorded environmental changes in the Chew Bahir basin. In this statistical project we consider the Chew Bahir palaeolake to be a dynamical system consisting of interactions between its different components, such as the waterbody, the sediment beneath lake, and the organisms living within and around the lake. Recurrence is a common feature of such dynamical systems, with recurring patterns in the state of the system reflecting typical influences. Identifying and defining these influences contributes significantly to our understanding of the dynamics of the system. Different recurring changes in precipitation, evaporation, and wind speed in the Chew Bahir basin could result in similar (but not identical) conditions in the lake (e.g., depth and area of the lake, alkalinity and salinity of the lake water, species assemblages in the water body, and diagenesis in the sediments). Recurrence plots (RPs) are graphic displays of such recurring states within a system. Measures of complexity were subsequently introduced to complement the visual inspection of recurrence plots, and provide quantitative descriptions for use in recurrence quantification analysis (RQA). We present and discuss herein results from an RQA on the environmental record from six short (< 17 m) sediment cores collected during the CBDP, spanning the last 45 kyrs. The different types of variability and transitions in these records were classified to improve our understanding of the response of the biosphere to climate change, and especially the response of humans in the area. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122554
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Geosciences, University of Potsdam, Potsdam, Germany; School of Earth Sciences, Addis Ababa University, Addis Ababa, Ethiopia; Institute of Geography Education, University of Cologne, Cologne, Germany; Potsdam Institute for Climate Impact Research, Potsdam, Germany; Department of Geography, University College London, London, United Kingdom
Recommended Citation:
Trauth M.H.,Asrat A.,Duesing W.,et al. Classifying past climate change in the Chew Bahir basin, southern Ethiopia, using recurrence quantification analysis[J]. Climate Dynamics,2019-01-01