Referate und Hausarbeiten : Geographie
► Environment and Natural Resources
● San Francisco
● Los Angeles
● Death Valley (86 meters below sea level ; lowest point in U.S.)
● Silicon Valley
● Mount Whitney (4417 meters)
● California is an area where are many earthquakes. Every day there are up to 14 little earthquakes, but most of them are so slight that they aren't even noticed. Since the beginning of this century there have been 3600 quakes which have registed over 4.0 on the Richter scale. (Only Earthquakes with the magnitude over ~4 are noticeably) In 1906, there was an earthquake measuring 8.3 near San Francisco. Because of the terrible destruction this earthquake caused, new laws were passed for building construction. This was useful in 1989, when a quake measuring 7.1 arose in San Francisco.
● It is estimated that within the next 30 years there will be another quake of the 8.3 magnitude. This will be called the “Big Bang”. So the Californians live under the constant threat of earthquakes. Residents are told to avoid putting heavy objects on shelves, to fasten cupboards to walls and in the case of a quake to get under a bed or table.
● GREAT EARTHQUAKES DURING THE LAST CENTURY
1 1906 SAN FRANCISCO, 8.3 Richter Scale Damage to homes built before earthquake codes.
2 1983 COALINGA, 6.7 Richter ScaleDamage to older homes built before earthquake codes.
3 1971 SAN FERNANDO, 6.6 Richter ScaleDamage to newer homes improperly designed or constructed.
4 1984 MORGAN HILL, 6.2 Richter ScaleDamage to homes built before earthquake codes.
5 1989 LOMA PRIETA, 7.1 Richter ScaleDamage to homes built before earthquake codes.
6 1994 NORTHRIDGE, 6.7 Richter ScaleDamage to modern houses.
● The climate in California is subtropical (It lies between the 32. and the 42. degree of latitude) ...