Drought in the Western Great Plains, 1845–56
Drought in the Western Great Plains, 1845–56
复制标题
西部大平原的干旱，1845-56 年
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
P. Brown
中科院分区：
文献类型：
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作者：
C. Woodhouse;J. Lukas;P. Brown
通过对大平原西部两侧树木的树轮分析，以及对科罗拉多州东部和科罗拉多前缘山脉干旱和溪流的树轮重建，表明大平原西部发生了持续的19世纪中期干旱。编制新的大平原西部树木年轮年表，结合现有年表，现在可以更详细地评估这次干旱的空间和时间特征。对从大平原西北部到新墨西哥州中部的一组对干旱敏感的年轮年表的分析表明，从怀俄明州中南部到新墨西哥州东北部，1845-56年是干旱的核心地区。干旱在1845-48年、1851年和1854-1856年特别严重，在其间的几年里收缩并影响到较小的地区。这次干旱对自然生态系统和人类活动的影响很难衡量，因为缺乏历史文献和令人困惑的...
A sustained mid-nineteenth-century drought in the western Great Plains has been indicated by a tree-ring analysis of trees flanking the western Great Plains, and in tree-ring reconstructions of drought and streamflow for eastern Colorado and the Colorado Front Range. The development of new tree-ring chronologies for the western Great Plains, in combination with existing chronologies, now enables a more detailed assessment of the spatial and temporal characteristics of this drought. The analysis of a set of drought-sensitive tree-ring chronologies ranging from the northwestern Great Plains to central New Mexico indicates a core area of drought from south-central Wyoming to northeastern New Mexico for the years 1845–56. Drought was particularly severe in the years 1845–48, 1851, and 1854–56, contracting and affecting smaller regions in intervening years. The impact of this drought on natural ecosystems and human activities is difficult to gauge because of the paucity of historical documents and the confound...