Seismographs can detect earthquakes from far beyond 100 miles if sensitive enough. Sometimes many instruments at great distances are used to calculate the severity of the quake.
Oklahoma has had more then 50 small earthquakes in 2010, most within 50 miles of Oklahoma City, OK.
yes. Many scientist have predicted earthquakes accurately before they occur, unfortunately they can only predict them a couple of seconds before they occur in your area and they are already occurring a few miles from where you live. But our government will spend a lot of money on earthquake predictions so when the big one hits there will be no money left to restore your house but there will be enough money to rebuild all the banks, savings and loans, stock brokers homes and buildings. This is similar to the 700 billion dollar bail out for the crooks that robbed the banks.
The intensity of earthquakes is very high. So it can be felt hundreds of miles away.
We can feel earthquakes hundreds of miles away due to the seismic waves they generate, which travel through the Earth's crust. These waves, particularly P-waves (primary waves) and S-waves (secondary waves), can propagate over long distances, causing the ground to shake even far from the epicenter. The intensity of the shaking diminishes with distance, but sensitive instruments and human perception can still detect these vibrations. Additionally, local geological conditions can amplify the effects of distant earthquakes.
The seismograph was invented by the Chinese polymath Zhang Heng in 132 AD during the Han dynasty. Zhang's seismoscope was able to detect and indicate the direction of earthquakes from hundreds of miles away.
if you are talking about deformation, it does cause earthquakes but they are very small
You can feel earthquakes hundreds of miles away because seismic waves travel through the Earth's crust and are able to cause vibrations in the ground that can be felt at a distance. The intensity of the shaking will decrease the further you are from the earthquake's epicenter.
Yes, sharks have a keen sense of smell and can detect blood in the water from miles away. Their ability to detect even tiny amounts of blood helps them locate potential prey.
Deep focus earthquakes are seismic events that occur at depths greater than 300 kilometers (approximately 186 miles) within the Earth's crust or upper mantle. They are typically associated with subduction zones, where one tectonic plate is forced beneath another. These earthquakes can release significant amounts of energy and are less common than shallow earthquakes, which occur at shallower depths. Due to their depth, deep focus earthquakes often produce less surface shaking compared to shallow ones, but they can still be felt over large distances.
Most are between 1 and 10 miles deep.
witin 15 miles
The absolute threshold is the smallest amount of light that a person can detect. The human absolute threshold we can detect is a candle flame at 30 miles away.