by mercalli scale.
because since the earthquake shakes up the ground so much some extra waves come up which are called after shocks
The ground shaking is caused by an earthquake in which two tectonic plates rub against each other or overlap. This happens mainly on fault lines (where two tectonic plates shift). The ancient Chinese used a system in which a ball would be in a carved Dragons mouth and depending on how big the earthquake was (how much shaking and destruction) the ball would fall into certain cups. Now we use seismographs.
A Tsunami can travel as fast a jetliner in flight which is anywhere from 500-600 mph. The earthquake occurred about 80 miles of the coast, although a Tsunami will slow as it hits the coast line, you can figure residents had anywhere from 8 - 15 minutes to get to higher ground. Not much time!
alot
lots
The intensity of ground shaking during an earthquake is influenced by factors such as the earthquake's magnitude, depth, and distance from the epicenter. The type of soil and rock formations in the affected area can also impact the extent of ground shaking. Additionally, local topography and buildings' proximity to fault lines can amplify shaking.
contributers
contributers
because since the earthquake shakes up the ground so much some extra waves come up which are called after shocks
Seismometers measure ground movement during an earthquake. These instruments detect and record the vibrations caused by the seismic waves generated by the earthquake.
An earthquake can be caused in two different ways, there is a volcanic earthquake and a tectonic earthquake. Tectonics earthquakes are much more common than volcanic earthquakes. Volcanic earthquakes are when magma, or molten rock, moves underground. This can cause earthquake directly in what is called a harmonic tremor, or indirectly by breaking and shifting rock. A tectonic earthquake is when stress built up by the movement of Earth's tectonic plates is released in the form of shaking.
0.3 magnitude
yousally the are followed by much smaller quakes
Ground motion increases logarithmically with each unit increase in earthquake magnitude. Therefore, the ground motion would be approximately 10 times greater for a magnitude 5.5 earthquake compared to a magnitude 4.5 earthquake.
The ground shakes moving a needle which is then used to see how strong it was based on how much the needle moved.
Liquefaction occurred in some areas of Christchurch during the 2011 earthquake due to the loose, water-saturated soil in those locations. When the ground shakes violently during an earthquake, the water-saturated soil loses its strength and behaves like a liquid, causing buildings, roads, and utility services to sink or tilt, resulting in extensive damage.
The amount of ground displacement in an earthquake is referred to as the fault slip or fault displacement. This measures how much the rocks on either side of the fault have moved relative to each other during the earthquake.