What is a strike-slip earthquake?
What is a strike-slip earthquake?
strike-slip fault – a fault on which the two blocks slide past one another. The San Andreas Fault is an example of a right lateral fault.
How do strike-slip faults cause earthquakes?
A recent study has revealed extensive data on how strike-slip faults develop over time and eventually cause earthquakes at the Earth’s surface. The cause of strike-slip fault earthquakes is due to the movement of the two plates against one another and the release of built up strain.
What type of fault motion occurs on the Hollywood fault?
It has an established dip angle of between 70° and 90° based on surface and subsurface observations, and has experienced significant left-slip movement since the late Miocene.
What happens if earthquake hits Los Angeles?
Up to 1 million people could be displaced from their homes. The damage could add up to $200 billion, the ShakeOut scenario estimates. Communications networks, including internet and cellphone service, could be disrupted for days or longer if telecommunications lines are severed and if electricity is out.
What is the most famous strike-slip fault?
In a strike-slip fault, the blocks of rock move in opposite horizontal directions. These faults form when crust pieces slide along each other at a transform plate boundary. The San Andreas Fault goes right through California. It is the most famous fault in the world.
Can a strike-slip fault cause a tsunami?
Strike-slip faults are not usually included in tsunami hazard assessments as they generally cause large horizontal (with limited vertical) displacements, and so are considered insufficient to generate large tsunamis unless they trigger a submarine landslide.
How big was the earthquake in Long Beach CA in 1933?
Magnitude: The 1933 earthquake was a magnitude 6.4 and it is estimated the fault ruptured for about nine miles in the subsurface (there was no surface fault rupture). The ground shaking lasted about 10 seconds.
Where are the fault lines in Los Angeles?
In the Los Angeles area, the surface expression of the Newport-Inglewood Fault is accentuated by a line of hills extending from Signal Hill to Culver City. The Newport-Inglewood is a right-lateral strike-slip fault with a slip rate of about 0.02 inches per year.
How big was the earthquake in Huntington Beach?
Oil derricks were shaken out of the ground in Huntington Beach. The earthquake impacted an estimated 75,000 square miles and was felt as far away as the San Joaquin Valley, the Owens Valley and northern Baja California. Click on the image for a larger view.
Why did California pass the field act after the earthquake?
Just one month after the earthquake, the California State Legislature enacted the Field Act when it was determined that loose subsoil, shoddy workmanship, and substandard materials all contributed to the failure of the school structures.