• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Hydrology and hillslope processes explain spatial variation in tree-ring responses to the 1983 earthquake at Borah Peak, Idaho, USA
【24h】

Hydrology and hillslope processes explain spatial variation in tree-ring responses to the 1983 earthquake at Borah Peak, Idaho, USA

机译：水文和山坡工艺解释了1983年鲍拉峰，爱达荷州的1983年地震的树木反应空间变化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Dendrogeomorphic approaches have been used to identify tree-ring responses to earthquakes, and have the potential to contribute new paleoseismic information. However, this potential is limited by the relatively low intensity of damage from earthquakes. In this paper, we present a comparison of tree-ring responses in multiple species to the M-w 6.9 1983 Borah Peak, Idaho earthquake across three adjacent but distinct sites with different hydrologic settings, and different types and intensities of co-seismic mass movement. We analyzed samples from 166 trees for a broad range of growth responses, including suppressions, releases, reaction wood, and traumatic resin ducts. The proportions of trees recording growth disturbances at the sites with clear hydrologic changes and/or co-seismic mass movement were twice as high (39-42%) as the site where these processes were less evident (19%), and probability density functions of percentage change in growth for all crossdated trees echoed these results. Growth suppressions and reaction wood were common across sites, whereas traumatic resin ducts were only associated with rockfalls and landslides at one site. Growth releases were also primarily restricted to one site, and in contrast to previous studies, most of these probably reflected direct improvements in growing conditions via documented increased flow in springs and streams, rather than the indirect influence of reduced competition via the death of neighboring trees. These results highlight the importance of site selection in dendroseismology, and particularly suggest that focusing on sites with potential co-seismic hydrologic changes and mass movement, sampling trees with and without external evidence of earthquake impacts, and understanding the connection between responses and site conditions may facilitate greater contributions of dendrogeomorphic approaches to paleoseismology. (c) 2018 John Wiley & Sons, Ltd.
机译：Dendrogeomorphic方法已被用于识别地震的树木响应，并且有可能有助于促进新的古摆信息。然而，这种潜力受到地震损坏的相对低的强度受到限制。在本文中，我们向M-W 6.9 1983 Borah Peak，跨越三个相邻但不同的网站的多种物种中的树木响应进行了比较，具有不同的水文环境，以及不同类型和共同的批量运动的不同类型和强度。我们分析了166棵树的样品，用于广泛的生长反应，包括抑制，释放，反应木材和创伤树脂管道。具有透明水文变化和/或共震批量运动的树木在网站上记录生长紊乱的比例是占这些方法的次数（39-42％），其中这些过程不太明显（19％）和概率密度函数所有交叉树木的增长百分比变化都会回应这些结果。生长抑制和反应木在遗址上是常见的，而创伤性树脂管道仅与一个位点的岩石和滑坡相关联。增长释放也主要仅限于一个网站，与之前的研究相比，大多数这些可能反映了通过在春天和流中的文献的增加的流量的日益增长的流量来直接改善，而不是通过邻近树的死亡的间接影响。这些结果突出了位于树突中的网站选择的重要性，特别建议在具有潜在的共同地震水文变化和群众运动的网站上，具有和没有外部地震影响的外部证据，并理解响应与现场条件之间的联系可能促进树枝状常态方法对古摆力的更大贡献。 （c）2018 John Wiley＆Sons，Ltd。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号