68 Aftershocks
catagory 5 earth qwacke
On March 11 alone, there were 200+ aftershocks. From the 9.0 magnitude earthquake on Friday March 11 05:46:23 UTC until March 31 midnight there were approximately 2,806 earthquakes ranging in magnitude 3.9 through 7.9.
An earthquake in the ocean is dangerous than on land because in the ocean if it occurs it can generate an earthquake which can cause more destruction than an earthaquake on land
Aftershocks, landslides, liquefaction, and tsunamis can all cause damage in the days or months following a large earthquake. Buildings weakened by the initial earthquake may collapse due to aftershocks, while unstable terrain can lead to landslides. Liquefaction can cause the ground to become soft and unstable, and tsunamis can result from undersea earthquakes, posing a threat to coastal areas even after the initial seismic event.
Most of the damage from the Sumatra-Andaman earthquake was from the tsunami it triggered rather than the earthquake itself. When the earthquake occurred it caused the seafloor to shift upwards, displacing an enormous column of water. This caused a wave to race across the ocean that came ashore in many locations as a surge of water with enough force to sweep away entire buildings.
There must have been a lot, but it's hard to say. An aftershock can be a small tremble or large enough to cause some huge damage.
An earthquake caused an undersea landslide. it also can form by an under water earthquake
Aftershocks cause the most earthquake-related deaths and injuries.
A volcano eruption can cause an earthquake and or aftershocks
The earthquakes that immediately follow a major earthquake shock are called aftershocks. Aftershocks occur as the Earth's crust adjusts to the stress changes caused by the initial earthquake. While most aftershocks are smaller in magnitude than the main earthquake, some can still be strong enough to cause damage.
aftershocks. Aftershocks are smaller earthquakes that can happen following the main earthquake as the fault adjusts to the stress changes from the initial seismic event.
aftershocks. These aftershocks occur as the stressed crust readjusts following the main earthquake. They can sometimes be powerful enough to cause further damage to buildings and infrastructure.
Aftershocks cause the most earthquake-related deaths and injuries.
Aftershocks can be dangerous because buildings and structures weakened by the initial earthquake can be further damaged or collapse. People may also be at risk from falling debris or landslides triggered by aftershocks. Additionally, aftershocks can cause panic and hinder rescue and recovery efforts.
catagory 5 earth qwacke
The difference between them is that Primary effects happen during the earthquake e.g. Casualties, Damage to parking structures & free ways. But with Secondary effects they happen after an earthquake e.g. Fire, Landslides & Liquefaction
On March 11 alone, there were 200+ aftershocks. From the 9.0 magnitude earthquake on Friday March 11 05:46:23 UTC until March 31 midnight there were approximately 2,806 earthquakes ranging in magnitude 3.9 through 7.9.