Landslides最新文献

{"title":"Application of the debris-flow hazard index for pipelines in the context of the hydrogeological disaster of February 2023 in São Sebastião, Serra do Mar, Brazil","authors":"Vinicius Queiroz Veloso, Fabio Augusto Vieira Gomes Reis, Victor Cabral, Artur A. Sá, Marcelo Fischer Gramani, Thiago Castro Ribeiro, Agostinho Tadashi Ogura, Claudia Vanessa do Santos Corrêa, Pedro Victor Serra Mascarenhas, Wanderley Russo, Joana Paula Sánchez, Caiubi Emanuel Souza Kuhn, Lucilia do Carmo Giordano","doi":"10.1007/s10346-024-02319-4","DOIUrl":"https://doi.org/10.1007/s10346-024-02319-4","url":null,"abstract":"<p>Debris flows are a type of natural disaster that poses great threat to infrastructure, humans and the environment. In Brazil, debris flows have caused significant damage, especially in the Serra do Mar Mountain region. The increasing frequency and intensity of extreme precipitation events in the country highlights the need for the development of effective landslide risk management strategies. In this study, we analyze the initiation and dynamics of a debris-flow event that occurred in the Toque-Toque Grande watershed based on numerical modeling, as well as the risk that debris-flow occurrences represent to pipeline crossings using the Debris-flow Hazard Index methodology. The Toque-Toque Grande watershed is located in São Sebastião, northern coast of the São Paulo state (Brazil), where in February 18–19, 2023, an unprecedent precipitation event triggered landslides and debris flows. The results revealed that the intensification of extreme precipitation frequency and volume over short periods demands a more in-depth analysis. Instantaneous events, occurring without prior accumulations, are becoming increasingly frequent. It becomes imperative to urgently comprehend their dynamics and their relationship with natural disasters, especially debris flows, and their impact on urban centers and strategic infrastructures along impact routes. The increasing frequency and intensity of extreme precipitation events highlight the need for adaptable risk management strategies focused on prevention to mitigate impacts on infrastructure, society, and the environment. Additionally, the study emphasizes the urgency of structural protection measures following the magnitude of the 2023 event, evidenced by meteorological and geomorphological assessments, highlighting the influence of physical environmental conditions on the formation of debris flows. Computational modeling aided in visualizing the dynamics of the flow, providing crucial understanding for its dynamics. The identification of high-risk areas and the implementation of containment measures, exemplified by the protection structure of Transpetro in the Toque-Toque Grande basin, highlight the importance of proactive structural measures in impact mitigation. Essentially, this study sought to demonstrate the complexity of debris flow risk management, advocating for multidisciplinary approaches, prevention strategies, emergency response, and infrastructure protection in the face of environmental and operational challenges.</p>","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"68 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solid–fluid phase transition characteristics of loess and its drag reduction mechanism","authors":"Daozheng Wang, Xingang Wang, Xiaoqing Chen, Qiangbing Huang, Jiading Wang, Baoqin Lian, Fei Wang","doi":"10.1007/s10346-024-02331-8","DOIUrl":"https://doi.org/10.1007/s10346-024-02331-8","url":null,"abstract":"<p>Flow-like events usually occur during heavy rainfall and pose significant threats to ecosystems and human life and property because of their suddenness, high speed, and long distances. To study the solid–fluid transition and subsequent high fluidity and hypermobility mechanism of redeposited loess, we conducted a series of flume tests and rheological tests, and the results showed that loess exhibits different degrees of fluidized movement characteristics under different rainfall intensities, and a rainfall intensity of 90 mm/h was the most likely to trigger loess flowslides. Additional rheological analyses indicated that viscosity (shear rate) bifurcation characterizes the rheological response of loess solid–fluid transition, and the decrease in viscosity caused by shear thinning can explain the drag reduction effect and its high fluidity in the process of solid–fluid transition, which corresponds well with the results of flume tests. We proposed a two-step yielding characteristic and introduced structural dynamics to establish a unified solid–fluid transition model incorporating a hydro-mechanical coupling and rheological property. The model can be used to describe both the solid-like behavior of soil before phase transition using an elastoplastic model and fluid-like behavior after phase transition using a viscoplastic model. The research results provide a new understanding of solid–fluid phase transition characteristics of loess from the perspective of rheology, which can also provide a new idea for studying the fluidization movement of rock avalanches and pyroclastic flows and their geomorphic evolution.</p>","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"48 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141936018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating geoinformatics and numerical modelling for landslide back-analysis and forecasting: a proactive mitigation study of the Shiv Bawri landslide","authors":"Avinash Sajwan, G. V. Ramana","doi":"10.1007/s10346-024-02321-w","DOIUrl":"https://doi.org/10.1007/s10346-024-02321-w","url":null,"abstract":"<p>In the monsoon season of 2023, Himachal Pradesh witnessed the catastrophic Shiv Bawri landslide, underscoring the vulnerability of mountainous regions to natural disasters. This study employs advanced geoinformatics and numerical modelling to provide a comprehensive back-analysis and forecasting of landslide dynamics. A detailed methodology encompassing field investigations, drone surveys, and data compilation for rainfall and satellite imagery forms the basis of the analysis. A multi-phase mass flow model and the TRIGRS-derived factors of safety for pre-event and post-event analysis, considering vegetation’s influence through root reinforcement models, are employed. The findings reveal a high correspondence between modelled and actual landslide events, with the models effectively predicting the landslide’s volume, flow height, and velocity. The multi-phase mass flow calculations yield a volume estimate of 4.12 <span>(times)</span> 10⁴ m³ (post-event) and 2.92 <span>(times)</span> 10⁴ m³ (pre-event), with respective validation success rates of 88.99% and 93.9%. The analysis indicates maximum flow height and velocity of 14.2 m and 16.2 m/s for post-event and 12.1 m and 12.6 m/s for pre-event analysis. The study emphasises the necessity of integrating detailed terrain analysis and numerical modelling for effective landslide risk mitigation and preparedness. By providing insights into the complex interplay of natural factors leading to landslides, this research advances the proactive management of landslide risks in susceptible mountainous regions.</p>","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"75 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Using anatomical tree growth responses to date landslide movements","authors":"Karel Šilhán","doi":"10.1007/s10346-024-02324-7","DOIUrl":"https://doi.org/10.1007/s10346-024-02324-7","url":null,"abstract":"<p>The dating of landslide movements is a unique opportunity to learn about their past in the absence of archival data. Dendrogeomorphic methods, based on the study of tree rings, offer an exceptional combination of accuracy and temporal range of dating. However, most landslide studies to date have been based on the analysis of macroscopic growth disturbances in trees. In doing so, the use of anatomical growth responses may be more advantageous in some aspects. Thus, this study aims to introduce the spectrum of anatomical growth responses in trees induced by landslide movements for their dating, substantiating their advantages and limitations, and comparing them with each other. Samples from roots and trunks of sycamore maple (<i>Acer pseudoplatanus</i> L.) growing on a landslide of known time of occurrence (May 2010) were used. Geophysical ERT measurements were performed to test the assumption of subsurface influence of landslide movements on tree growth. Based on the results focused on the intensity of changes in vessel lumen area (VLA) and percentage changes of VLA within the tree ring, anatomical changes identified in four different geomorphic situations on the landslide with expected different effects of landslide movements on tree growth were compared with each other. Responses in tree roots were generally significantly stronger compared to those in tree trunks. However, the short time series and difficult cross-dating of roots can be considered as a disadvantage. On the other hand, the identification of anatomical responses in trees with straight trunks (until now practically not used in landslide research) allows a significant expansion of the number of trees usable for landslide dating in the future.</p>","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"22 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141862596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Landslides triggered by the 2024 Noto Peninsula earthquake","authors":"Doan Huy Loi, Sanchitha Jayakody, Kyoji Sassa, Kazuo Konagai, Kiyoharu Hirota, Atsutoshi Ono, Takashi Takanaka, Tomonori Oki, Taichi Minamitani","doi":"10.1007/s10346-024-02333-6","DOIUrl":"https://doi.org/10.1007/s10346-024-02333-6","url":null,"abstract":"","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"95 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141862597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monitoring cases of rainfall-induced debris flows in China","authors":"Xiaojun Guo, Marcel Hürlimann, Peng Cui, Xiaoqing Chen, Yong Li","doi":"10.1007/s10346-024-02316-7","DOIUrl":"https://doi.org/10.1007/s10346-024-02316-7","url":null,"abstract":"<p>Debris flows are considered one of the most hazardous types of mass movement. China has a long history of monitoring debris flows, which has enhanced the understanding of debris flows and the development of strategies for their prevention. This study reviewed case studies and outputs related to debris flow monitoring in China. The monitoring systems are set in seven catchments, with area between 2 and 40 km², covering various types of debris flows in different climate conditions. This review also introduced the definitions and classifications adopted for debris flows in China for comparison with those used in Western literatures. A comprehensive analysis was conducted of debris flow parameters, including the grain size distribution, density, Froude number, velocity–depth relationship, volume–peak discharge relationship, volume–drainage area relationship, and velocity and peak discharge calculation methods. Additionally, the rainfall intensity–duration thresholds were compared. Accurate identification of such information is fundamental for enhancing comprehension of debris flow characteristics, facilitating monitoring, and the implementation of early warning and alarm systems.</p>","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"31 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implementation of a slope stability method in the CRITERIA-1D agro-hydrological modeling scheme","authors":"G. Sannino, F. Tomei, M. Bittelli, M. Bordoni, C. Meisina, R. Valentino","doi":"10.1007/s10346-024-02313-w","DOIUrl":"https://doi.org/10.1007/s10346-024-02313-w","url":null,"abstract":"<p>This paper presents the implementation of a slope stability method for rainfall-induced shallow landslides in CRITERIA-1D, which is an agro-hydrological model based on Richards’ equation for transient infiltration and redistribution processes. CRITERIA-1D can simulate the presence and development of roots and canopies over space and time, the regulation of transpiration activity based on real meteorological data, and the evaporation reduction caused by canopies. The slope can be considered composed of a multi-layered soil, leading to the possibility of simulating the bedrock and of setting an initial water table level. CRITERIA-1D can consider different soil horizons characterized by different hydraulic conductivities and soil water retention curves, thus allowing the simulation of capillarity barriers. The validation of the proposed physically based slope stability model was conducted through the simulation of the collected water content and water potential data of an experimental slope. The monitored slope is located close to Montuè, in the north-eastern sector of Oltrepò Pavese (northern Apennines—Italy). Just close to the monitoring station, a shallow landslide occurred in 2014 at a depth of around 100 cm. The results show the utility of agro-hydrological modeling schemes in modeling the antecedent soil moisture condition and in reducing the overestimation of landslides events detection, which is an issue for early warning systems and slope management related to rainfall-induced shallow landslides. The presented model can be used also to test different bioengineering solutions for slope stabilization, especially when data about rooting systems and plant physiology are known.</p>","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"16 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on the deformation characteristics of Sanmendong landslide and the correlation of hydrodynamic action","authors":"Weiyi Zhang, Guangcheng Zhang, Jingyi Sun, Feifei Chen, Yiliang Liu","doi":"10.1007/s10346-024-02301-0","DOIUrl":"https://doi.org/10.1007/s10346-024-02301-0","url":null,"abstract":"<p>Studying the formation mechanisms and influencing factors of typical regional landslides is a crucial step in landslide control and disaster prediction. The mechanism of formation and the influence of hydrodynamic factors on accumulated landslides in the Three Gorges Reservoir have always been a focus of attention. Although rainfall and reservoir water level factors interact with each other, refining the impact areas and characteristics of these two factors will be beneficial for future research on accumulated landslides in the Three Gorges Reservoir area. Taking the Sanmendong landslide as an example and relying on its geological background and professional monitoring data, this study employs gray correlation analysis to analyze the sensitivity between changes in hydrodynamic factors and changes in landslide safety factor. It discusses the regions affected by rainfall and the descending speed of the reservoir water level under different conditions, as well as the changing patterns of data. The ILF-FFT landslide prediction model is utilized to study the relationship between real monitoring data of the Sanmendong landslide and fluctuations in hydrodynamic factors, obtaining the weight coefficients of hydrodynamic factors in the model and separating the fluctuation curve under the influence of rainfall and reservoir water level fluctuations. A comparative analysis of the contribution of hydrodynamic factors to the deformation of the Sanmendong landslide is conducted. The results indicate that the overall deformation of the Sanmendong landslide is more sensitive to rainfall factors, and as the descending speed of the reservoir water level increases, its sensitivity to landslide deformation will also increase. The local deformation of the landslide toe is greatly affected by the factors of reservoir water level descent, and with the increase of the descending speed of the reservoir water level, the correlation results also increase. It is important to note that there is a sudden change in the correlation results at a descending speed of 1.0 m/d in the local stability analysis, which is related to the most dangerous sliding surface identified in the simulation calculation and requires special attention during the process of reservoir water level descent. Furthermore, the deformation of the landslide toe in Sanmendong is greatly affected by the descent of the reservoir water level, while the deformation of the landslide head is more influenced by rainfall factors.</p>","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"10 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preliminary study on the development characteristics and formation mechanism of the Zhongchuan Town liquefaction landslide-mudflow-blockage disaster chain induced by the 2023 Jishishan Earthquake in Gansu Province","authors":"Donghui Chen, Renmao Yuan, Ping Wang, Yingying Tian, Gang Hu, Jiwen An, Siyuan Ma","doi":"10.1007/s10346-024-02307-8","DOIUrl":"https://doi.org/10.1007/s10346-024-02307-8","url":null,"abstract":"<p>On December 18, 2023, at 23:59, a magnitude <i>M</i>_S 6.2 earthquake struck Jishishan County, Gansu Province. The earthquake triggered a severe liquefaction landslide-mudflow-blockage disaster chain event near Zhongchuan Town in the neighboring Haidong City, Qinghai Province (referred to as the “disaster chain event”). This event caused extensive damage to infrastructure, including residential buildings, power transmission towers, and roads, leading to significant loss of life and property. Based on extensive geological surveys conducted at the disaster site, this study employs a combination of methods, including satellite remote sensing image interpretation and three-dimensional real-world models from unmanned aerial vehicles (UAVs). The primary objective is to elucidate the fundamental developmental characteristics and evolution process of the disaster chain event. Moreover, this study preliminarily explores the formation mechanism of this disaster by integrating the topography, lithology, hydrogeological conditions, and seismic triggering factors. The results suggest that the disaster chain event was controlled by unfavorable local hydrogeological conditions and was triggered by the intense shaking of the Jishishan earthquake, resulting in the occurrence of loess liquefaction landslides. The mobilized mudflow material flowed remotely along the low-friction frozen channel. During the movement stage along the channel, the landslide-mudflow chain transitioned into a blockage failure event due to the obstruction of the downstream earth dam, thereby exacerbating the destructive capability and disaster scope of this event. Further in-depth analysis of the formation conditions and mechanisms of the disaster chain event carries significant implications for guiding disaster reduction and prevention in potential hazard points with similar geological conditions in the northwest Loess Plateau region of China.</p>","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"33 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formation and breach of the giant Cuola landslide dam and their impacts on the landscape evolution of river valley in the Jinsha River, southeastern Tibet","authors":"Xiaopeng Zhou, Jianhui Deng, Siyuan Zhao, Hua Li, Haonan Cui, Chenglin Ye, Wanyu Hu","doi":"10.1007/s10346-024-02318-5","DOIUrl":"https://doi.org/10.1007/s10346-024-02318-5","url":null,"abstract":"<p>The giant Cuola landslide is one of the largest and highest landslide dams in the upper reaches of the Jinsha River, which brought about a substantial influence on the geomorphological evolution of the Jinsha River valley. Through field investigations, UAV photogrammetry, OSL, and ¹⁰Be dating methods, the topographic and geological characteristics of the Cuola landslide dam were examined, and the evolution features of formation and failure were investigated as well. The results indicate that the Cuola landslide, with a volume of ~ 4 × 10⁸ m³ and an age of ~ 50.9 ka BP, was primarily due to a seismic event, and the major failure mode of the ~ 1590-m-high source area on the left bank was attributable to a wedge sliding. The landslide body slid into the valley and climbed ~ 540 m up the right bank with a long runout of 3740 m. The relict landslide deposits demonstrate a large-scale natural dam with a height of 272 m, a length of 1780 m, and a width of 1940 m, which completely blocked the river, and formed a dammed lake with an inundation length of 190 km and an impoundment volume of 10.817 km³. The longevity of the landslide dam was discussed in terms of glacial climate, dam morphology, and material characteristics, and fault dislocation was deduced to induce the overtopping dam break at ~ 4 ka BP. The overflowing water preferentially undercut the weak zone created by fault displacement within the dam until the onset of the final breach, facilitated by the warm climatic conditions of Holocene Climatic Optimum. The findings in this study illustrate the dramatic longevity of a natural dam produced by a giant landslide in one of the most deeply incised valleys in the world and provide a conceptual model for a better understanding of landslide-induced landscape evolution of high-relief river catchments.\u0000</p>","PeriodicalId":17938,"journal":{"name":"Landslides","volume":"34 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141742820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}