High‐Arctic climate conditions for the last 7000 years inferred from multi‐proxy analysis of the Bliss Lake record, North Greenland
High‐Arctic climate conditions for the last 7000 years inferred from multi‐proxy analysis of the Bliss Lake record, North Greenland
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根据北格陵兰布利斯湖记录的多代理分析推断出过去 7000 年的高纬度北极气候条件
DOI：
10.1002/jqs.1548
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发表时间：
2012
影响因子：
2.3
通讯作者：
A. Ludikova
中科院分区：
文献类型：
--
作者：
J. Olsen;K. Kjær;S. Funder;N. K. Larsen;A. Ludikova
北极比中纬度地区更容易受到气候变化的影响。因此，高北极地区的古湖泊学研究对于深入了解气候系统的动态非常重要。在这里，我们提出了一个多代理研究从世界上最北端的湖泊之一：布利斯湖，皮尔地，格陵兰岛。全新世早期（10 850-10 480 cal. a BP）的特点是侵蚀加剧，海洋条件逐渐增多。从10 480 cal. a BP，直到该湖被隔离在7220 cal. a BP。从它的海洋隔离在7220卡尔。BP布利斯湖变成湖泊环境。来自地球化学代用指标（δ 13 C和总有机碳）的证据表明，在7220至6500 cal. a BP，对应于全新世热最大值，从3300到910 cal. a BP。从850到500卡。a BP较冷的气候条件持续存在。从温暖到寒冷的气候条件的转变发生在850卡路里左右。BP可能与从中世纪温暖期到小冰期的过渡有关。版权所有© 2011约翰威利父子有限公司.
The Arctic is more vulnerable to climate change than are mid latitudes. Therefore, palaeolimnological studies from the High Arctic are important in providing insights into the dynamics of the climate system. Here we present a multi‐proxy study from one of the world's northernmost lakes: Bliss Lake, Peary Land, Greenland. The early Holocene (10 850–10 480 cal. a BP) is characterized by increased erosion and gradually more marine conditions. Full marine conditions developed from 10 480 cal. a BP until the lake was isolated at 7220 cal. a BP. From its marine isolation at 7220 cal. a BP Bliss Lake becomes a lacustrine environment. Evidence from geochemical proxies (δ13C and total organic carbon) suggests that warmer conditions prevailed between 7220 and 6500 cal. a BP, corresponding to the Holocene thermal maximum, and from 3300 until 910 cal. a BP. From 850 to 500 cal. a BP colder climate conditions persisted. The transition from warmer to colder climate conditions taking place around 850 cal. a BP may be associated with the transition from the Medieval Warm Period to the Little Ice Age. Copyright © 2011 John Wiley & Sons, Ltd.