Frost rings as time markers in Northern Hemisphere tree-ring chronologies, with special reference to the 1627 BC and AD 536 events

IF 2.7 3区 农林科学 Q1 FORESTRY
Samuli Helama
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Abstract

This paper discusses the findings of frost rings in three supra-long Northern Hemisphere tree-ring chronologies. Comparison between recently published data representing bristlecone pine from western North America, Scots pine from northern Fennoscandia and Siberian larch and Siberian spruce from the Yamal Peninsula shows the rare occurrence of frost rings dated to exactly same calendar years in more than one of these chronologies. The frost ring dates evident in all three datasets are dated to 1627 BC and AD 536. Previously, tree-ring features indicative of adverse growing conditions around 1627 BC have been discussed in the literature. Here, it is emphasised that the frost rings 1627 BC and AD 536 are dated to exactly same calendar year in all available tree-ring records, which demonstrates the value of such an event as a definitive time marker. Other major events of frost rings from multiple sites were dated to 421 BC, 251 BC, AD 627, AD 884, AD 985, AD 1109, AD 1259, AD 1453, AD 1601 and AD 1884. Similar to 1627 BC and AD 536, some of these events have been attributed to volcanic forcing and climate anomalies that led to human consequences and disasters. The case of the 1650 s BC appears different, with possibility of more than one major eruptions, as suggested by frost ring events dated to 1656 BC and 1653 BC in Yamal and western USA, respectively.

霜冻年轮作为北半球年轮年表的时间标记,特别参考公元前1627年和公元536年的事件
本文讨论了三个超长北半球树木年轮年表中霜轮的发现。最近公布的北美西部狐尾松、芬诺斯坎迪亚北部的苏格兰松、亚马尔半岛的西伯利亚落叶松和西伯利亚云杉的数据对比显示,在这些年表中,很少有霜冻年轮在同一个日历年出现。这三个数据集中的霜轮日期都可以追溯到公元前1627年和公元536年。以前,文献中已经讨论了公元前1627年左右指示不利生长条件的树木年轮特征。这里强调的是,在所有可用的树木年轮记录中,公元前1627年和公元536年的霜冻年轮是完全相同的历年,这表明了霜冻年轮作为确定的时间标记的价值。其他主要的霜冻年轮事件发生在公元前421年、公元前251年、公元627年、公元884年、公元985年、公元1109年、公元1259年、公元1453年、公元1601年和公元1884年。与公元前1627年和公元536年类似,其中一些事件被归因于火山强迫和气候异常,导致了人类的后果和灾难。公元前1650年代的情况似乎有所不同,可能不止一次的大喷发,正如公元前1656年和公元前1653年分别在亚马尔和美国西部发生的霜环事件所表明的那样。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Dendrochronologia
Dendrochronologia FORESTRY-GEOGRAPHY, PHYSICAL
CiteScore
5.50
自引率
13.30%
发文量
82
审稿时长
22.8 weeks
期刊介绍: Dendrochronologia is a peer-reviewed international scholarly journal that presents high-quality research related to growth rings of woody plants, i.e., trees and shrubs, and the application of tree-ring studies. The areas covered by the journal include, but are not limited to: Archaeology Botany Climatology Ecology Forestry Geology Hydrology Original research articles, reviews, communications, technical notes and personal notes are considered for publication.
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