Enhancing landslide predictability: Validating geophysical surveys for soil moisture detection in 2D and 3D scenarios

Enhancing landslide predictability: Validating geophysical surveys for soil moisture detection in 2D and 3D scenarios
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增强滑坡的可预测性:验证 2D 和 3D 场景中土壤湿度检测的地球物理调查

DOI:
10.1016/j.jsames.2023.104664
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发表时间:
2023
影响因子:
1.8
通讯作者:
Bortolozo C
Bortolozo C
中科院分区:
地球科学4区
文献类型:
--
作者:
Bortolozo C

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每年,巴西都在努力应对山体滑坡的破坏性影响,尤其是在夏季。国家自然灾害监测和警报中心(Cemaden)非常重视对这些现象的研究,以更深入地了解其过程和原因。在这项努力中面临的一个关键挑战是获取高风险地区土壤的岩土技术特性,土壤湿度是一个关键因素。收集点样以获取这些岩土参数不仅成本高昂,而且在提供全面的二维或三维覆盖方面也受到限制。因此,该项目的主要目的是验证通过地球物理调查在二维和三维场景下获取土壤湿度数据的方法。数据是从Cemaden网络内的土壤湿度站和各种收集的样本中收集的,以确认结果。为了产生更可控、更真实的条件,进行了一系列的田间入渗试验。这些发现与地电法确定土壤湿度的能力有关,为地球动力学小组及其合作机构牵头的未来调查奠定了宝贵的基础。
Every year, Brazil grapples with the destructive impact of landslides, typically during the summer season. The National Centre for Monitoring and Alerts of Natural Disasters (Cemaden) places significant emphasis on studying these phenomena to understand their processes and causes more deeply. One key challenge faced in this endeavour is the procurement of geotechnical properties of the soil in high-risk areas, with soil moisture being a crucial factor.Collecting point samples for acquiring these geotechnical parameters is not only costly but also limited in providing a comprehensive two-dimensional or three-dimensional coverage. Therefore, the primary aim of the proposed project is to validate the method of acquiring soil moisture data through geophysical surveys in both 2D and 3D scenarios.Data was gathered from soil moisture stations within Cemaden's network and various collected samples to confirm the results. To generate more controlled yet realistic conditions, a sequence of field infiltration experiments was conducted. The findings, related to the ability of the geoelectric method to define soil moisture, derived from this project form an invaluable foundation for future investigations spearheaded by the Geodynamics Group and its collaborating institutions.
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