Discussion on faults, foci, epicenters and earthquakes.

Related BrainMass Solutions

• Faults Foci and Epicenters

  562949 Faults Foci and Epicenters How are faults, foci (plural of focus), and epicenters related? Faults that are experiencing no active creep (relatively consistent yet minor movements) may be considered "safe."

• Geology: Fault Creep

  Alden (2014), writes, "Creeping behavior happens on all kinds of faults, but it's most obvious and easiest to visualize on strike-slip faults, which are vertical cracks whose opposite sides move sideways with respect to each other...On the Hayward fault

• Earth Science: Forces Within the Earth

  Earthquakes often occur on faults - strike-slip earthquakes occur on strike-slip faults, normal earthquakes occur on normal faults, and thrust earthquakes occur on thrust or reverse faults.

• Tectonic cycle, faults and plates

  This pressure builds until it overcomes the resistance between the plates, and suddenly breaks them apart. This causes an earthquake. Discussion of the types of plate boundaries and faults that exist in different parts of the world.

• Geologic Disaster and Hazards

  Further, pumping wastewater onto faults in deep disposal wells also triggers earthquakes. Step 3 The mitigation strategies for earthquakes include identifying hazards, building safer structures, and learning about earthquake safety.

• How Geologic Maps can assist in earthquake planning

  Very, very few earthquakes occur at faults that are exposed on the surface; instead, the fault breaks at a location deeper, where more movement has taken place and more strain and energy have built up.

• Earthquakes

  Plates can also be compressed to push up mountains when they collide or move sideways along transform faults. The plates are the Earth's crust that float on the molten rock in the center of the Earth.

• Volcanoes and Earthquakes

  The edges of the tectonic plates are marked by faults and most earthquakes occur along these fault lines, where the plates slide past one another or collide. Earthquakes is a natural way or releasing pressure and stress caused by tectonic plates.

• Eccentricity

  Foci (+or- 5, 0), major semiaxis 13 Since the foci are on the x-axis, the equation of an ellipse is ,where a>b, and a=13. From the property of foci, we know if F1=(5,0), and F2=(-5,0), then any point P on the ellipse satisfies PF1+PF2=2a.