Determining Mass Wasting Risk Factors
To determine the risk of mass wasting, understanding the factors that trigger slope movement is crucial.
- Seismic Activity: Earthquakes are significant triggers for mass wasting. A seismometer measures ground motion, providing data on seismic activity. In earthquake-prone regions, this data is vital for assessing the likelihood of earthquake-induced landslides, which contributes significantly to the overall mass wasting risk.
- Topography (Satellite Data): While stereo satellite data helps analyze slope angles and landforms, which are important susceptibility factors, it doesn't measure the triggering event itself.
- Gravity Measurement: The acceleration due to gravity is a fundamental force but doesn't vary significantly enough locally to be the primary determinant of mass wasting risk compared to triggers or specific geological weaknesses.
- Geological Map: Geological maps are essential for understanding slope materials and structures (susceptibility factors), but they do not directly measure the dynamic triggers like seismic events.
Therefore, monitoring seismic activity with a seismometer provides critical information about a primary trigger mechanism, making it highly valuable for assessing the dynamic risk of mass wasting, especially in seismically active areas.
Important Questions from Geomorphology
Which one of the following is not an igneous rock?
Which of the following statements is/are correct?
1. Hypocenter is the point on the surface of the Earth, nearest to the focus.
2. Velocity of earthquake waves is higher in denser materials.
3. P waves move faster and are the first to arrive at the surface of the Earth.
Select the correct answer using the code given below:
Which one of the following is the lowermost/innermost intrusive igneous rock?
The formation of ‘tors’ on small rocky hills is associated with which among the following?
Which one of the following statements about metamorphic rocks is not correct?
