- How strong does an earthquake have to be to cause a tsunami?
- Is there always a tsunami after an earthquake?
- Can the San Andreas Fault cause a 9.0 earthquake?
- Is a 12.0 earthquake possible?
- What are the 5 largest earthquakes ever recorded?
- Is it possible for California to fall into the ocean?
- What would happen if a 10.0 earthquake hit?
- Has there ever been a tsunami in California?
- How long after an earthquake does a tsunami happen?
- What happens if San Andreas Fault breaks?
- Can a 7.0 earthquake cause a tsunami?
- How far can a 9.0 earthquake be felt?
- What is the most dangerous fault line in the world?
- How long overdue is the San Andreas Fault?
- Is it safer to be outside or inside during an earthquake?
- What damage will the San Andreas Fault cause?
- Is a 10.0 earthquake possible?
- Can a tsunami hit LA?
How strong does an earthquake have to be to cause a tsunami?
Usually, it takes an earthquake with a Richter magnitude exceeding 7.5 to produce a destructive tsunami.
Most tsunamis are generated by shallow, great earthquakes at subductions zones..
Is there always a tsunami after an earthquake?
No, all earthquakes do not cause tsunamis. There are four conditions necessary for an earthquake to cause a tsunami: (1) The earthquake must occur beneath the ocean or cause material to slide in the ocean. (2) The earthquake must be strong, at least magnitude 6.5.
Can the San Andreas Fault cause a 9.0 earthquake?
The San Andreas fault is not long and deep enough to have a magnitude 9 or larger earthquake as depicted in the movie. … Shaking from even the largest possible San Andreas fault events will not be felt on the east coast, as described in the movie.
Is a 12.0 earthquake possible?
The magnitude scale is open-ended, meaning that scientists have not put a limit on how large an earthquake could be, but there is a limit just from the size of the earth. A magnitude 12 earthquake would require a fault larger than the earth itself.
What are the 5 largest earthquakes ever recorded?
10 biggest earthquakes in recorded historyValdivia, Chile, 22 May 1960 (9.5) … Prince William Sound, Alaska, 28 March 1964 (9.2) … Sumatra, Indonesia, 26 December 2004 (9.1) … Sendai, Japan, 11 March 2011 (9.0) … Kamchatka, Russia, 4 November 1952 (9.0) … Bio-bio, Chile, 27 February 2010 (8.8)More items…•Mar 14, 2011
Is it possible for California to fall into the ocean?
No, California is not going to fall into the ocean. California is firmly planted on the top of the earth’s crust in a location where it spans two tectonic plates. … There is nowhere for California to fall, however, Los Angeles and San Francisco will one day be adjacent to one another!
What would happen if a 10.0 earthquake hit?
The earthquake would be bad but the aftershocks would make the area very unstable. … If a 10.0 earthquake were to strike a major American city, it would be the most catastrophic earthquake to ever strike anywhere on the planet! You see, the largest temblor ever recorded anywhere on earth (9.5) occurred in Chile (1960).
Has there ever been a tsunami in California?
The last tsunami to hit California came from Japan, damaging more than 100 boats in Santa Cruz. The magnitude 9.0 earthquake in 2011 triggered a massive wave that traveled 5,000 miles across the ocean, causing damage up and down the West Coast as far south as San Diego. … In 1964, a magnitude 9.2 quake hit Alaska.
How long after an earthquake does a tsunami happen?
When the waves approach land, they will slow down and begin to grow in height. If a quake hits locally, or the quake causes an underwater landslide in Kachemak Bay, you may only have 15 to 20 minutes.
What happens if San Andreas Fault breaks?
USGS scenarios project more than 1,800 deaths, and 50,000 injuries due to a major Southern San Andreas fault earthquake. CoreLogic, a business analysis service, estimated a Southern San Andreas fault rupture will cause 3.5 million homes to be at risk with $289 billion in reconstruction value.
Can a 7.0 earthquake cause a tsunami?
Most tsunamis are generated by earthquakes with magnitudes over 7.0 that occur under or very near the ocean and less than 100 kilometers (62 miles) below Earth’s surface (earthquakes deeper than this are unlikely to displace the ocean floor).
How far can a 9.0 earthquake be felt?
In a place with complex geology, every rock contact scatters and absorbs seismic energy, so that far away you’d probably feel it but not see damage or casualties. In the U.S. Midcontinent, with layer-cake geology that makes efficient wave guides, a 9.0 event would probably produce appreciable damage 565 miles away.
What is the most dangerous fault line in the world?
San Andreas FaultLength1,200 km (750 mi)Displacement20–35 mm (0.79–1.38 in)/yrTectonicsPlateNorth American & Pacific16 more rows
How long overdue is the San Andreas Fault?
“We’re playing Russian roulette with Mother Nature. You realize the last big earthquake to hit the L.A. segment of the San Andreas fault was 1680. That’s over 300 years ago. But the cycle time for breaks and earthquakes on the San Andreas fault is 130 years, so we are way overdue.
Is it safer to be outside or inside during an earthquake?
Don’t run outside. Trying to run in an earthquake is dangerous, as the ground is moving and you can easily fall or be injured by debris or glass. Running outside is especially dangerous, as glass, bricks, or other building components may be falling. Again, you are much safer to stay inside and get under a table.
What damage will the San Andreas Fault cause?
Such an earthquake could be catastrophic. Were a magnitude-7.8 earthquake to hit the southern San Andreas Fault, it could cause more than 1,800 deaths, 50,000 injuries and $200 billion in damage and other losses, according to a 2008 report from the U.S. Geological Survey.
Is a 10.0 earthquake possible?
No, earthquakes of magnitude 10 or larger cannot happen. … No fault long enough to generate a magnitude 10 earthquake is known to exist, and if it did, it would extend around most of the planet.
Can a tsunami hit LA?
Major tsunamis could hit Los Angeles with little warning. Residents should know the signs and when and where to evacuate, scientists warn.