How to Forecast an Earthquake

Earthquakes are a common geological phenomenon; they happen all over the world every single day. However, most of the earthquakes are too weak for humans to feel. Since the dawn of time, man has sought to forecast earthquakes due to the possibility of their devastating effects. Even though earthquakes cannot be forecasted or predicted with 100 percent certainty, there are some things that you can do to help forecast earthquakes.

Difficulty: Challenging

Instructions

1. Look at geologic maps to find the locations of past earthquakes. Maps showing the locations of past earthquakes are available from the United States Geological Survey (USGS). By looking at these maps, you can see where earthquakes may be likely to occur again based on where they have occurred in the past.

2. Obtain information on when earthquakes have occurred in the past. In some locations that have experienced multiple earthquakes in the past, there may be some periodicity or pattern to when those earthquakes occurred. Knowing this periodicity can help you forecast when an earthquake may occur in the future. The USGS also has information on when earthquakes have occurred.

3. Examine seismograms, tracings or recordings of seismic activity at a particular location. If you see an increase in seismic activity on a seismogram, a large earthquake may soon follow.

4. Observe rocks in various areas. Sometimes, rocks will contain layers of disturbed sediments that indicate ancient, severe earthquakes. Knowing the locations of these past severe earthquakes can indicate that future severe earthquakes may occur in these same areas.

5. Take note of foreshocks. Sometimes large earthquakes are preceeded by smaller earthquakes known as foreshocks. If small earthquakes are occuring in a particular area over a particular period of time, then a larger, more severe earthquake may be forecasted for that area.

6. Look at the behavior of animals. Although highly controversial, some animals, such as dogs and cats, may change their behavior patterns prior to an earthquake.

7. Think about tidal forces. Tidal forces as predictors of future earthquakes is an unproven theory. The phenomenon, known as syzygy, says that tidal patterns can be used to forecast earthquakes, especially those involving oceanic crust.

Resources

• The United States Geological Survey

[Divish]

on 8/1/2008 Interested in different approaches to the theme? Visit http://uniall.blogspot.com/2008/08/blog-post.html. Author has some works related quake prediction and proposes to cooperate. Scientist writes about possibility to calculate date of quake.Unfortunately, text is in Russian but you can communicate in English and ask for translation.

[SensitivePlant]

on 7/17/2008 I read several articles claiming the TickleMe Plant can actually forecast an earthquake! This is the plant that MOVES when you Tickle It. The leaves fold and even the branches droop when tickled! Some claim hours before an earth this happens without even being tickled! That perked my interest so I have several TickleMe Growing
in my house and gave several greenhouse kits to friends in CA. For sure it is a very sensitive plant as with just the slightest tickle makesthe leaves fold up like magic. It was very easy to grow. I found my supplies at
www.TickleMePlant.com Its a must have plant and who knows maybe it really can forecast an earthquake