Article
Geosciences, Multidisciplinary
C. Prakasam, R. Aravinth, Varinder S. Kanwar, B. Nagarajan
Summary: The research focuses on the analysis and stabilization measures of Dhalli landslide in Himachal Pradesh. The kinematic analysis revealed the causes of wedge failure and the field investigation assessed the stability of the slope. Based on the results, a suitable stabilization method using reinforced wired net mesh and shotcrete was proposed, indicating a post-stabilization FOS value of 1.6.
GEOMATICS NATURAL HAZARDS & RISK
(2021)
Article
Computer Science, Interdisciplinary Applications
Xin Liu, Yu Wang, Anthony Kwan Leung
Summary: This paper proposes a novel probabilistic back analysis method that explicitly models the rainfall triggering mechanism for a slope failure. By incorporating both slope failure and survival records, uncertainties in soil strength and hydraulic parameters can be effectively reduced.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Engineering, Environmental
Xin Liu, Yu Wang, Anthony Kwan Leung
Summary: Rainfall plays a crucial role in triggering landslides in many areas. Understanding the relationship between rainfall characteristics and slope stability is essential for mitigating landslide risks. Previous studies have shown that there exists a threshold curve of rainfall intensity and duration for a specific slope, beyond which landslides are expected to occur. This study aims to overcome the limitations and assumptions of previous research and investigate the rainfall intensity-duration control of landslides using real slope case histories and rainfall records. A generalized procedure called the critical rainfall pattern curve (CRPC) is proposed, which provides a simple yet effective tool for slope-specific landslide prediction and risk assessment.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Pin-Chun Huang
Summary: This study explores the relationship between rainfall pattern, slope stability of soil layer, and the occurrence of shallow landslides. A seepage flow model and slope stability analysis approach were used to examine the variation of unstable grids. By dividing the watershed into multiple zones and applying a dynamic recurrent neural network model, the possible duration and start time of shallow landslides in each zone can be predicted effectively.
Article
Engineering, Geological
Nilo Lemuel J. Dolojan, Shuji Moriguchi, Masakazu Hashimoto, Kenjiro Terada
Summary: A method for analyzing shallow slope failures caused by rainfall is developed through the use of the Green-Ampt infiltration equation and the infinite slope stability model. The model is applied and validated with landslides that occurred during Typhoon Hagibis in Japan, showing good agreement with reported failure depths and times. The applicability of the model extends to post-analysis, real-time, or projected assessment of slope stability based on input rainfall data.
Article
Engineering, Geological
Bastian Van den Bout, Luigi Lombardo, Ma Chiyang, Cees van Westen, Victor Jetten
Summary: The research introduces an iterative method for finding progressive slope failure surfaces while considering lateral forces due to weight of the fractured failure material. The method performed well in predicting smaller failures, but ellipsoid sampling methods proved to be more robust for larger slope failures. Comparison with other free and open-source methods showed complex variation in failure surface patterns for the 2009 Messina event, highlighting the potential of the method to provide catchment-scale deterministic failure volume and geometry for future disasters.
ENGINEERING GEOLOGY
(2021)
Article
Engineering, Geological
Haibing Yu, Huiming Tang, Jia-Qing Zhou, Changdong Li, Huawei Zhang, Wen-Yu Zhu
Summary: This study investigated the dynamic stability analysis of bedding rock slopes with soil interlayer under different rain patterns. It derived the critical rain intensities for dry and water-filled fissures and introduced rain coefficients for investigating rain patterns. The study also analyzed the evolving water head and water pressure along the soil interlayer under different infiltration scenarios. Based on the analytical solutions, an analytical model incorporating time-varying water head was established to predict slope stability. Numerical simulations validated the analytical solutions and the study proposed a failure threshold based on the rainfall threshold for slope failure considering different rain patterns. The results showed that rain patterns and coefficients have a significant impact on the rainfall threshold for slope failure. The study provides valuable insights into assessing the evolving slope stability under different rain patterns and improves our understanding of the dynamic stability of bedding rock slopes with inclined soil interlayer.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Engineering, Geological
Emir Ahmet Oguz, Ivan Depina, Vikas Thakur
Summary: Uncertainties in parameters of landslide susceptibility models can hinder accurate predictions of landslide occurrences. This study introduces a new three-dimensional probabilistic landslide susceptibility model to address this issue, showing better performance in predicting landslides compared to conventional models.
Article
Engineering, Geological
Nilo Lemuel J. Dolojan, Shuji Moriguchi, Masakazu Hashimoto, Nguyen Xuan Tinh, Hitoshi Tanaka, Kenjiro Terada
Summary: This study introduces a catchment-scale, multihazard approach to assess landslides and flooding caused by heavy rainfall. By combining hydrological and geotechnical principles, the model successfully simulates the hydrologic and geotechnical response of the catchment, providing a practical framework for a unified early warning system for landslide and flood-prone areas.
ENGINEERING GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Chunyan Bao, Lingtao Zhan, Yingjie Xia, Yongliang Huang, Zhenxing Zhao
Summary: Creep slope is a dynamic process that goes from stable deformation to unstable failure. Studying the development trend of landslides is crucial for slope treatment and landslide early warning.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Environmental Sciences
Wooyoung Na, Changhyun Jun, Sang Yeob Kim
Summary: This study focuses on evaluating the influence of different rainfall patterns on slope stability and compares it with an actual landslide incident that occurred in Korea in 2011. The study found that models considering abrupt rainfall intensity can more accurately capture the timing of landslide occurrences. Therefore, the appropriate adoption of a rainfall distribution model should be highlighted for landslide prediction.
Article
Engineering, Geological
Paolo Paronuzzi, Alberto Bolla
Summary: This paper investigates the shallow landslides triggered by rainfall in the alpine environment, particularly focusing on the colluvial soil covering the terraced belts. The study describes the engineering geological characteristics and failure mechanisms of these landslides and presents data on their geomorphological and engineering geological characteristics. The findings show that a critical rainfall intensity of about 40-45 mm/h can cause soil slips in mountain basins with high humidity and fine fraction content.
ENGINEERING GEOLOGY
(2023)
Article
Engineering, Environmental
Yang Li, Kaixi Xue, Yu Zhao, Chaolin Wang, Jing Bi, Tianyuan Wang, Shenfu Wang, Bo Zhang
Summary: This paper investigates the influence of rainstorm conditions on the stability of layered soil slopes through physical model tests and numerical simulation. The results show that the layered structure and inclination affect the rainwater infiltration and stability of the slopes. Different inclinations greatly influence the safety factors, with downdip slopes being more susceptible to landslides. The results provide a theoretical basis for designing a stratified soil slope management plan.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Article
Environmental Sciences
Nunziarita Palazzolo, David J. Peres, Massimiliano Bordoni, Claudia Meisina, Enrico Creaco, Antonino Cancelliere
Summary: This study compares 1D infinite slope and 3D slope stability analysis by calibrating the SCOOPS 3D model with genetic algorithms, showing better performance of the 3D model in terms of ROC statistics. Results indicate that in a specific case study, the 3D model performs even better than other studies present in the scientific literature to date.
Article
Engineering, Chemical
Zhiliu Wang, Xinming Li, Song Yin, Xidong Du
Summary: In this study, a new mechanical model was developed to consider the degradation of soil strength due to water migration. Through a case study, it was found that the wetting front depth increased with increasing rainfall time and showed different trends in different stages. The improved analytical solution can accurately evaluate the potential sliding surface under rainfall conditions, providing guidance for slope stability evaluation and analysis of dangerous surfaces.
Article
Geosciences, Multidisciplinary
K. S. Sajinkumar, J. P. Kannan, G. K. Indu, C. Muraleedharan, V. R. Rani
GEOSCIENCE FRONTIERS
(2017)
Article
Environmental Sciences
K. S. Sajinkumar, H. S. Bincy, E. H. Bouali, T. Oommen, C. L. Vishnu, Y. Anilkumar, K. P. Thrivikramji, S. Keerthy
Summary: Coastal dynamics can rapidly change beach morphology and studying these changes using PSInSAR technology allows for detailed observations of erosion and deposition processes along the coast. The study found that erosion and deposition can coexist in certain areas, with different locations showing varying levels of displacement over time. The results illustrate the capability of PSInSAR as a reliable tool for monitoring temporal phases of coastal morpho-dynamics.
WETLANDS ECOLOGY AND MANAGEMENT
(2021)
Article
Water Resources
F. Z. Echogdali, S. Boutaleb, S. Taia, M. Ouchchen, M. Id-Belqas, R. B. Kpan, M. Abioui, J. Aswathi, K. S. Sajinkumar
Summary: Increased sedimentation reduces dam efficiency by decreasing storage capacity. This study used the SWAT model to estimate sediment production and identify critical sediment source areas in the Tata basin. The model was calibrated and validated, showing good agreement with measured flow data. The annual sediment yield ranged from 0 to 11 t/ha/y, with downstream areas generating more sediment due to increased surface runoff and other basin characteristics.
APPLIED WATER SCIENCE
(2022)
Article
Engineering, Environmental
K. S. Sajinkumar, C. Unnikrishnan Warrier, C. Muraleedharan, A. Shahul Hameed, V. R. Rani, A. P. Pradeepkumar, P. Sundarajan
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2017)
Article
Geosciences, Multidisciplinary
Haifeng Chen, Hao Zou, M. Santosh, Huawen Cao, Franco Pirajno, Changcheng Huang, Mingcai Hou
Summary: Researchers have identified a supervolcano eruption event in the tuff layers from the Early-Middle Triassic boundary in the Yangtze Block. This eruption may have contributed to the delayed biotic recovery after the end-Permian mass extinction.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
Yanjuan Yin, Baohua Zhang, Xinzhuan Guo
Summary: This study determines the Fe-Mn interdiffusion rates in natural Mn-bearing garnet crystals with 750 ppm H2O using an experimental approach. The results show that the Fe-Mn interdiffusion coefficient slightly decreases with increasing Fe content, and water significantly enhances the Fe-Mn interdiffusion in garnet. These findings suggest that the time required for homogenization of the compositional zoning of a garnet is much shorter than previously thought.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
Yirang Jang, Sung Won Kim, Vinod O. Samuel, Sanghoon Kwon, Seung-Ik Park, M. Santosh, Keewook Yi
Summary: Detrital zircon geochronology and Hf isotope analysis are used to infer provenance characteristics and evaluate the tectonic evolution of sedimentary basins. The results of this study show that the Paleozoic sequences of the Okcheon Belt have a diverse provenance linked to different tectonic environments.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
Stephen F. Foley, Isra S. Ezad
Summary: This study investigates the trace element compositions of melts and minerals from hydrous pyroxenites containing K-richterite through high-pressure experiments. The results show that different minerals play different roles in the enrichment of various trace elements. The study also models the isotopic aging process in hydrous pyroxenite source rocks.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
G. Harshitha, C. Manikyamba, M. Santosh, Cheng-Xue Yang, A. Keshav Krishna, V. V. Sesha Sai, I. Panduranga Reddy
Summary: The early Archean oceans underwent significant redox changes that had a lasting impact on the Earth's biosphere. This study investigates the geochemical characteristics of Archean Mnformations in southern India and reveals the importance of these sedimentary deposits in understanding the ancient redox conditions and sedimentation patterns. The findings suggest that the sediments were deposited in shallow to deeper shelf environments in the Archean proto-ocean, and they provide evidence of regional episodes of ocean oxygenation prior to the Great Oxygenation Event.
GEOSCIENCE FRONTIERS
(2024)