False, the focus is located deep underground. The epicenter is at ground level
According to several US news agencies (c.g. CBSNEWS), the USGS provided a comparison to help people gain perspective of Japan's recent earthquake.It was cited that"USGS compared Japan's earthquake with two well known quakes: last year's earthquake in Haiti and the historic 1906 San Francisco quake.The USGS calculated the magnitude 8.9 earthquake in Japan [on March 11, 2011] to be 700 times stronger than Haiti's recent magnitude 7.0 earthquake, which devastated Port-au-Prince and killed more than 300,000 people.When comparing to the San Francisco magnitude 7.9 earthquake in 1906, the USGS has figured that Japan's earthquake is equivalent to 30 times stronger."
That is quite shallow for an earthquake.
10km
No. The Richter's scale measures the magnitude or intensity of an earthquake on a scale up to ten.
False, the focus is located deep underground. The epicenter is at ground level
Very little, as the earthquake occurs deep underground, hence the deep focus.
yeah, sure whatever
Epicenter!!
An earthquake deep underground releases seismic energy in the form of seismic waves. These waves carry energy from the point of the earthquake's origin (the focus) and cause the ground to shake as they propagate through the Earth's crust.
Deep underground, an earthquake is caused by the release of stress that has built up between tectonic plates. This sudden release of energy generates seismic waves that propagate through Earth's crust, leading to the shaking of the ground surface.
According to several US news agencies (c.g. CBSNEWS), the USGS provided a comparison to help people gain perspective of Japan's recent earthquake.It was cited that"USGS compared Japan's earthquake with two well known quakes: last year's earthquake in Haiti and the historic 1906 San Francisco quake.The USGS calculated the magnitude 8.9 earthquake in Japan [on March 11, 2011] to be 700 times stronger than Haiti's recent magnitude 7.0 earthquake, which devastated Port-au-Prince and killed more than 300,000 people.When comparing to the San Francisco magnitude 7.9 earthquake in 1906, the USGS has figured that Japan's earthquake is equivalent to 30 times stronger."
Life changing event. The Unsinkable Molly Brown had her whole life changed from that day on. Just like the people who lived through the 1906 San Francisco earthquake they experienced something that affected their entire lives.
The epicenter, a point on the earth's surface directly over the focus, is where the first motion of an earthquake will be felt.The first motion of an earthquake is created at the focus, the point deep underground where the first break in the fault line occurs.
An example of an earthquake focus is the point underground where the seismic energy is released, causing the earthquake. This focus can vary in depth from shallow (less than 70 km) to intermediate (70-300 km) to deep (greater than 300 km) within the Earth's crust.
in the core
That is quite shallow for an earthquake.