Mediterranean climate variability during the Holocene.
Mediterranean climate variability during the Holocene.
复制标题
全新世期间地中海气候变化。
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
V. Lykousis
中科院分区：
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作者：
J. Casford;R. H. Abu;E. Rohling;S. Cooke;K. Boessenkool;H. Brinkhuis;C. D. Vries;G. Wefer;M. Geraga;G. Papatheodorou;I. Croudace;J. Thomson;V. Lykousis
我们对沿地中海东部北缘发现的四个具有抑制生物扰动效应的高沉积速率海相岩心进行了研究。我们证明，作为现代文明发展中心的这一地区，在整个全新世都受到了约20摄氏度左右的独特冷却事件周期的显著影响。在保存最完好的情况下，这些事件的发生似乎特别突然，不到一个世纪。降温事件通常持续了几个世纪，有令人信服的迹象表明，它们与黎凡特/东非地区干旱加剧有关(Rossignol-Strick，1995；1998；Alley等人，1997；Hassan，1986；1996；1997a，b；McKim Malville等人，1998)。其中几个情节似乎与文化重组、土著发展(例如。牛的驯化、新技术)和人口迁移以及民族和思想的融合(Hassan，1986；1996；1997 a，b；McKim Malville，1998)。我们推断，可能起源于高纬度的气候事件(O‘Brien等人，1995；Bond等人，1997；Mayewski等人，1997；Alley等人，1997)通过直接的大气联系导致地中海东部及其周围地区的降温和干旱，因此在现代文明的发展中发挥了重要作用。
We present a study on four high sedimentation-rate marine cores with suppressed bioturbation effects, recovered along the northern margin of the eastern Mediterranean. We demonstrate that this region, central to the development of modern civilisation, was substantially affected throughout the Holocene by a distinct cycle of cooling events on the order of 2o C. In the best-preserved cases the onset of these events appears particularly abrupt, within less than a century. The cooling events typically lasted several centuries, and there are compelling indications that they were associated with increased aridity in the Levantine/NE African sector (Rossignol-Strick, 1995; 1998; Alley et al., 1997; Hassan, 1986; 1996; 1997a,b; McKim Malville et al., 1998). Several of these episodes appear coincident with cultural reorganisations, with indigenous developments (eg. cattle domestication, new technologies) and population migrations and fusion of peoples and ideas (Hassan, 1986; 1996; 1997a,b; McKim Malville, 1998). We infer that climatic events of a likely high-latitude origin (O’Brien et al., 1995; Bond et al., 1997; Mayewski et al., 1997; Alley et al., 1997) caused cooling and aridity in and around the eastern Mediterranean via a direct atmospheric link, and therefore played an important role in the development of modern civilisation.