Research >> Failure Mechanisms Simulated by the CRISIS Model
Embedded Files
Failure Mechanisms Simulated by the CRISIS Model
Brief Description:
Validating landslide models requires more than just matching mapped and modeled landslide locations—it also means assessing whether the predicted failure mechanisms align with real-world conditions like topography, geology, geomorphology, soil moisture, and material strength. While most regional models estimate landslide density or other landslide characteristics, few—if any—classify landslides by how they fail.
CRISIS distinguishes between different failure mechanisms:
1. Bottom-up failure from a rising groundwater table,
2a. Top-down failure from a downward propagating wetting front,
2b. Top-down failure from perched water tables, and
3. Failure from water exfiltration from fractured bedrock to overlying soil.
We applied CRISIS to landslides triggered by Hurricane Maria in Utuado, Puerto Rico.
Key Takeaway:
Different failure mechanisms can occur across a landscape, influenced by factors such as geomorphic position, subsurface material type, ground cohesion, weathering profile, and bedrock properties—highlighting the model’s capability to realistically capture diverse real-world slope behaviors.
1. Bottom-Up Failure from a Rising Groundwater Table
2a. Top-Down Failure from a Downward Propagating Wetting Front
2b. Top-Down Failure from a Perched Water Table
3. Failure from Water Exfiltration from Fractured Bedrock to Overlying Soil
Application in Utuado, Puerto Rico:
CRISIS was able to capture different failure mechanisms depending on the field conditions: geomorphic position, subsurface material type, ground cohesion, weathering profile, and bedrock properties.
1. Bottom-Up Failure from a Rising Groundwater Table
2a. Top-Down Failure from a Downward Propagating Wetting Front
2b. Top-Down Failure from a Perched Water Table
3. Failure from Water Exfiltration from Fractured Bedrock to Overlying Soil
Page updated
Google Sites
Report abuse