scholarly journals Prediction of Slow-Moving Landslide Mobility Due to Rainfall Using a Two-Wedges Model

Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2030
Author(s):  
Antonello Troncone ◽  
Luigi Pugliese ◽  
Andrea Parise ◽  
Enrico Conte
Keyword(s):  
Shear Zone ◽  
Water Table ◽  
Analytical Solutions ◽  
Soil Mass ◽  
New Approach ◽  
Water Table Fluctuations ◽  
Small Velocity ◽  
Landslide Mobility ◽  
Landslide Body ◽  
Slow Moving

In the present study, the landslides cyclically reactivated by water-table oscillations due to rainfall are dealt with. The principal kind of motion that usually characterizes such landslides is a slide with rather small velocity. As another feature, soil deformations are substantially accumulated inside a narrow shear zone situated below the landslide body so that the latter approximately slides rigidly. Within this framework, a new approach is developed in this paper to predict the mobility of this type of landslides due to rainfall. To this end, a two-wedges model is used to schematize the moving soil mass. Some analytical solutions are derived to link rain recordings with water-table fluctuations and in turn to landslide displacements. A well-documented landslide frequently activated by rainfall is studied to check the forecasting capacity of the proposed method.

Higher Order Analytical Solutions of Water Table Fluctuations in Coastal Aquifers

Ground Water ◽  
2011 ◽  
Vol 50 (2) ◽  
pp. 301-307 ◽  
Author(s):  
J.D. Stojsavljevic ◽  
D.-S. Jeng ◽  
B.R. Seymour ◽  
D. Pokrajac
Keyword(s):  
Water Table ◽  
Analytical Solutions ◽  
Coastal Aquifers ◽  
Higher Order ◽  
Water Table Fluctuations

scholarly journals Reply [to “Comment on ‘Beach water table fluctuations due to wave run-up: Capillarity effects’ by L. Li et al.”]

1998 ◽  
Vol 34 (11) ◽  
pp. 3205-3206
Author(s):  
L. Li ◽  
D. A. Barry ◽  
J. -Y. Parlange ◽  
C. B. Pattiaratchi
Keyword(s):  
Water Table ◽  
Water Table Fluctuations ◽  
Run Up ◽  
Beach Water

Shallow Water Table Fluctuations in Relation to Soil Penetration Resistance

Ground Water ◽  
2003 ◽  
Vol 41 (7) ◽  
pp. 964-972 ◽  
Author(s):  
James B. Shanley ◽  
K. Niclas Hjerdt ◽  
Jeffrey J. McDonnell ◽  
Carol Kendall
Keyword(s):  
Shallow Water ◽  
Water Table ◽  
Penetration Resistance ◽  
Shallow Water Table ◽  
Water Table Fluctuations ◽  
Soil Penetration Resistance

Water table fluctuations control CO2 exchange in wet and dry bogs through different mechanisms

2019 ◽  
Vol 655 ◽  
pp. 1037-1046 ◽  
Author(s):  
Joshua L. Ratcliffe ◽  
David I. Campbell ◽  
Beverley R. Clarkson ◽  
Aaron M. Wall ◽  
Louis A. Schipper
Keyword(s):  
Water Table ◽  
Co2 Exchange ◽  
Water Table Fluctuations

scholarly journals Influence of Water Table Fluctuation on Natural Source Zone Depletion in Hydrocarbon Contaminated Subsurface Environments

2020 ◽  
Author(s):  
Reem Ismail ◽  
Saeid Shafieiyoun ◽  
Riyadh Al Raoush ◽  
Fereidoun Rezanezhad
Keyword(s):  
Water Table ◽  
Contaminated Soil ◽  
Soil Surface ◽  
Source Zone ◽  
Water Table Fluctuation ◽  
Mass Removal ◽  
Water Table Fluctuations ◽  
Water Conditions ◽  
Static Water ◽  
Influence Of Water

Most of the prediction theories regarding dissolution of organic contaminants in the subsurface systems have been proposed based on the static water conditions; and the influence of water fluctuations on mass removal requires further investigations. In this study, it was intended to investigate the effects of water table fluctuations on biogeochemical properties of the contaminated soil at the smear zone between the vadose zone and the groundwater table. An automated 60 cm soil column system was developed and connected to a hydrostatic equilibrium reservoir to impose the water regime by using a multi-channel pump. Four homogenized hydrocarbon contaminated soil columns were constructed and two of them were fully saturated and remained under static water conditions while another two columns were operated under water table fluctuations between the soil surface and 40 cm below it. The experiments were run for 150 days and relevant geochemical indicators as well as dissolved phase concentrations were analyzed at 30 and 50 cm below the soil surface in all columns. The results indicated significant difference in terms of biodegradation effectiveness between the smear zones exposed to static and water table fluctuation conditions. This presentation will provide an overview of the experimental approach, mass removal efficiency, and key findings.

scholarly journals Evaluation of water table fluctuations and drainage discharge of bi-level drainage system in a layered soil

2017 ◽  
Vol 21 (1) ◽  
pp. 69-81
Author(s):  
kazem Esmaili ◽  
Mohammad ali Maddahzadeh. ◽  
Bijan Ghahraman ◽  
◽  
◽  
...  
Keyword(s):  
Water Table ◽  
Drainage System ◽  
Layered Soil ◽  
Water Table Fluctuations

Predicting preferential flow and water table fluctuations in karst systems using film-flow theory and source-responsive models

2021 ◽  
Author(s):  
Torsten Noffz ◽  
Jannes Kordilla ◽  
Alireza Kavousi ◽  
Thomas Reimann ◽  
Martin Sauter ◽  
...  
Keyword(s):  
Water Table ◽  
Vadose Zone ◽  
Water Resource Management ◽  
Preferential Flow ◽  
Film Flow ◽  
Dry Valleys ◽  
Diffuse Infiltration ◽  
Water Table Fluctuations ◽  
Aquifer Systems ◽  
Karst Systems

<p>The locally focused dissolution of the rock material (e.g., below dolines and dry valleys) in karst systems and in general percolating clusters of fractures in consolidated aquifer systems trigger the development of preferential flow paths in the vadose zone. Rainfall events may initiate rapid mass fluxes via macropores and fractures (e.g., as gravitationally-driven films) that lead to source-responsive water table fluctuations and comparably short residence times within the vadose zone. The degree of partitioning into a slow diffuse infiltration component and a rapid localized part depends, amongst others, on the hydraulic interaction of porous matrix and fracture domain as well as the geometrical characteristics of the fracture systems (e.g., persistence, connectivity) that are often difficult to obtain or unknown under most field conditions. Given their importance in water-resource management, specifically in arid and semi-arid regions (e.g., Mediterranean), it is desirable to recover such infiltration dynamics in porous-fractured systems with physically-based yet not overparameterized models. Here, we simulate water table fluctuations in a karst catchment in southwest Germany (Gallusquelle) using a source-responsive film flow model based on borehole and precipitation data. The model takes into account interfacial connectivity between slow and fast domain as well as phreatic zone discharge via classical recession analysis. This case study shows the potential importance of preferential flows while modeling water table responses in karst systems and recognizes the need for formulations other than those applied for a diffuse bulk fractured domain where infiltration patterns are assumed to be homogeneous without formation of infiltration instabilities along preferential pathways.</p>

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