复杂滑坡运动的完整历史年表?利用多学科方法改进基于树轮的结果

IF 5.7 1区 农林科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
Karel Šilhán , Jan Balek , Jan Klimeš , Jan Blahůt , Filip Harvich , Pavel Raška , Jiří Riezner , Martin Šťastný
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引用次数: 0

摘要

滑坡运动年表是确定其频率、评估滑坡危害和潜在触发因素的关键数据集。然而,关于历史滑坡活动的数据是不完整或完全缺乏的,因此获得这些数据的准确替代方法是使用树木地貌方法。即使这种方法也有它的局限性,所得到的运动年表通常被认为是最小的,并且包含不确定性。因此,在本研究的背景下,我们尝试用另外两个独立的时间信息来源来补充和交叉验证基于树木年轮的滑坡运动年表。年代学的主体部分是由177个受干扰的欧洲山毛榉(Fagus sylvatica L.)个体构建的。档案记录有助于补充较早时期的数据,而不是树木的年龄,并核实年表,相反,较近的时期(大约最近二十年)准确地补充了监测数据。由此得出的年表达到184年(1839-2022),并用于分析潜在的触发因素,这些触发因素以几天的极端降雨为代表。本文还讨论了不同方法的局限性,主要是在年代学中添加空间信息的能力不同,以及确定滑坡运动幅度的能力不同。该研究明确表明,历史森林经营数据可以用于树木地貌重建(在高管理强度的情况下是必要的)。这些数据将允许更有效地解释检测到的树木生长干扰以及样本大小的时间演变,这对于计算表示滑坡事件强度的事件响应指数至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Complete historical chronology of complex landslide movements? Improving the tree-ring based results using multidisciplinary approaches
Chronologies of landslide movements are a key dataset for determining their frequency, assessing landslide hazard and potential triggers. However, data on historical landslide activity are incomplete or completely lacking, so the accurate alternative to obtain them is to use dendrogeomorphic methods. Even this approach has its limitations, and the resulting chronologies of movements are generally considered to be minimal and including uncertainties. Thus, in the context of this study, an attempt was made to complement and cross-validate tree-ring based chronologies of landslide movements with two other independent sources of chronological information. The main part of the chronology was constructed from 177 disturbed European beech (Fagus sylvatica L.) individuals. Archival records helped to complement the data from an earlier period than the age of the trees and to verify the chronology, and conversely, the more recent period (approximately the last two decades) was accurately supplemented with monitoring data. The resulting chronology thus reaches 184 years (1839–2022) and was used for the analysis of potential triggers, which are represented by several days of extreme rainfall. This study also discusses the limitations of the different approaches, which are mainly related to the different ability to add spatial information to the chronology and the different abilities to determine the magnitude of the landslide movement. This study clearly indicated that historical forest management data can be used (necessary in the case of high intensity of management) in dendrogeomorphic reconstruction. These data will allow a more effective interpretation of the detected tree growth disturbances as well as the chronological evolution of sample size, which is crucial for the calculation of an event-response index expressing the intensity of the landslide event.
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来源期刊
Catena
Catena 环境科学-地球科学综合
CiteScore
10.50
自引率
9.70%
发文量
816
审稿时长
54 days
期刊介绍: Catena publishes papers describing original field and laboratory investigations and reviews on geoecology and landscape evolution with emphasis on interdisciplinary aspects of soil science, hydrology and geomorphology. It aims to disseminate new knowledge and foster better understanding of the physical environment, of evolutionary sequences that have resulted in past and current landscapes, and of the natural processes that are likely to determine the fate of our terrestrial environment. Papers within any one of the above topics are welcome provided they are of sufficiently wide interest and relevance.
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