Special Issue "Landslide Hydrology"
Deadline for manuscript submissions: closed (30 June 2018).
Dr. Thom A. Bogaard
Most landslides are triggered by rainfall, but the hydrologic dynamics that leads to changes in soil moisture and pore water pressure remains an important focal area of investigation. The effects of hillslope hydrology on runoff generation have been thoroughly studied, but less attention has been paid to these effects on slope stability. Nonetheless, the complex interactions amongst dynamic hydro-eco-geomorphic processes that evolve across spatial and temporal domains create the conditions for landslide initiation. Both the infiltration and exfiltration of rainwater and snowmelt provide the local trigger of landslides, while drainage and evapotranspiration tend to stabilize hillslopes by rerouting and removing subsurface water. An important aspect of the hydrologic system is the dynamics of preferential flow pathways, which can concentrate subsurface water within critical hillslope areas or drain water from potentially-unstable sites. Incorporating hydrological process knowledge into slope failure analysis still lags behind model development, largely because of the complexity of landslides. In addition to difficulties in understanding water pathways within heterogeneous soils and fractured bedrock, monitoring groundwater levels or soil moisture contents in unstable terrain present a challenge due to the large areas.
This Special Issue aims to develop a better understanding of hydrological processes related to landslide occurrence at both local and regional scales. It focuses on investigations in different climatological regions of the world where hydrological processes are monitored, including detailed field studies and regional hydrological investigations using remotely sensed and broader-scale field data. Analyses and modeling of these hydrological processes in potential landslide sites based on field observations at hillslope and catchment scales are welcome, as are the effects of vegetation, land use, geomorphology, and other earth surface dynamics on hydrological processes in unstable hillslopes. The objective is to improve our understanding of hydrologic dynamics in unstable hillslopes and ultimately the prediction of landslide triggering mechanisms, both in space and time.
Prof. Roy C. Sidle
Dr. Roberto Greco
Dr. Thom A. Bogaard
Manuscript Submission Information
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- preferential flow
- vegetation influences
- pore water pressure
- suction loss
- cascading hazards