Freeze- thaw weathering involves the breakdown of rock particles into smaller fragments through continuous fluctuations in the temperature of the water bodies. This form of weathering is common along coastlines. The water enters the rocks and then freezes when there is a decrease in temperature. The freezing expands the rock particles and aids frictions between the rock parts. This helps in the breakdown of the rocks to smaller particles.
It involves temperatures fluctuating around 0°C and is the dominant mechanical weathering process on coastlines
The strong ocean currents are undermining both areas causing earthquakes. ... Both areas are on the boundary of active plates, the motion of the plates causes earthquakes.
Predicting earthquakes is a very complex task as compared to that of the volcanic eruptions that take place as a consequence of these quakes. Not even the USGS can accurately predict these earthquakes as an earthquake occurs from deep within the layers of the earth and thus it is quite difficult to predict how shallow these depths are.
<u>Monitoring and predicting the behavior</u> of an active or extinct or dominant type of volcano is much easier as they can be studied based on magma and lava, for example, the swelling inside a volcano can predict that magma has accumulated near the surface.
Movement of magma and gases through the hydrothermal vents can be done through the thermal monitoring system also a volcano can bee seen on the surface and a earthquake in the seismic wave form underneath the surface is not.
