primary effects:
people felll over and died
buildings collapsed
glasss shattered
roads ruined
bridges collapsed
Secondary effects:
Unemployment
Roads closed
People died Insurance claims rose
Supplies become harder to get
Businesses go bust
building collapsed ,200 injuries,181 people were killed, ground shaking, building are weaken, water and sewage pipe were damaged ,city's buildings were damaged etc.
The secondary wave of the earthquake cause little damage, only a few buildings fell.
Although I do not have the answer here are a couples of websites which i found answered your question: http://www.ess.washington.edu/tsunami/Sumatra.htm http://en.wikipedia.org/wiki/2004_Indian_Ocean_earthquake This is not advertising and I have no act on copyright
Surface waves typically cause more damage than primary or secondary waves during an earthquake. They travel along the earth's surface and are responsible for the shaking that can result in building collapse and other structural damage. Primary and secondary waves, while important for seismologists to study, usually do not cause as much damage as surface waves.
Scientists use devices called Seismographs to determine the epicenter of an earthquake. If 3 or more seismographs detect an earthquake, seismic wave activity can be measured and quantified and then cross-referenced with other data (the primary and secondary seismic waves) to determine the earthquake's location.
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
people died
We can divide the effects of an earthquake into those known as the primary effects and those known as the secondary effects. Primary effects of an earthquake are those resulting directly from the earthquake itself. These include; buildings collapsing; roads cracking; bridges giving way; shattering of glass and injuries / deaths resulting from these. Secondary effects are those that result from the primary effects. For example ground shaking may result in the cracking of gas and water pipes (primary effects) this can result in severe fires due to explosion from escaping gas and difficulties in putting out fires due to lack of water from burst mains (secondary effects). Other secondary effects include, homelessness, business going bankrupt and closing etc.
building collapsed ,200 injuries,181 people were killed, ground shaking, building are weaken, water and sewage pipe were damaged ,city's buildings were damaged etc.
The secondary wave of the earthquake cause little damage, only a few buildings fell.
20,000 people dead
Gujarat lies around 400 km from the plate boundary that is located between the Indian Plate and the Eurasian Plate. This earthquake that struck Gujarat was caused by rifting reverse faulting on reactivated rift faults
Primary and secondary refer to the order in which they come out, surface waves are called surface because they resonate close to the surface
floodinggg :D
how far away you are from the focus of an earthquake
P waves (primary waves) and S waves (secondary waves).
Eg. in an earthquake, they are called the primary and the secondary sound waves. grrrrrr