Lecture9
Table of Contents
- Journey to the Center of Earth
- Why study Earth's interior?
- Why study Earth's interior?
- Why study Earth's interior?
- Why study Earth's interior?
- Why study Earth's interior?
- Why study Earth's interior?
- Why study Earth's interior?
- Why study Earth's interior?
- Why study Earth's interior?
- What's Inside the Earth?
- 8.1 How do geologists know about rocks in Earth's interior?
- 8.1 How do geologists know about rocks in Earth's interior?
- 8.1 How do geologists know about rocks in Earth's interior?
- 8.1 How do geologists know about rocks in Earth's interior?
- 8.1 How do geologists know about rocks in Earth's interior?
- 8.1 How do geologists know about rocks in Earth's interior?
- 8.1 How do geologists know about rocks in Earth's interior?
- 8.2 How do earthquakes help make images of Earth's interior?
- 8.2 How do earthquakes help make images of Earth's interior?
- 8.2 How do earthquakes help make images of Earth's interior?
- Earthquake Waves
- 8.2 How do earthquakes help make images of Earth's interior?
- Velocity of Earthquake Waves
- 8.2 How do earthquakes help make images of Earth's interior?
- Earthquake Waves-travel time
- 8.2 How do earthquakes help make images of Earth's interior?
- 8.2 How do earthquakes help make images of Earth's interior?
- 8.2 How do earthquakes help make images of Earth's interior?
- 8.2 How do earthquakes help make images of Earth's interior?
- 8.2 How do earthquakes help make images of Earth's interior?
- 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
- 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
- 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
- 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
- 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
- 8.4 What composes the interior of Earth?
- 8.4 What composes the interior of Earth?
- 8.4 What composes the interior of Earth?
- 8.4 What composes the interior of Earth?
- 8.4 What composes the interior of Earth?
- 8.4 What composes the interior of Earth?
- 8.5 How hot is the interior of Earth?
- 8.5 How hot is the interior of Earth?
- 8.5 How hot is the interior of Earth?
- 8.5 How hot is the interior of Earth?
- 8.5 How hot is the interior of Earth?
- 8.5 How hot is the interior of Earth?
Text and Images from Slide
8.2 How do earthquakes help make images of Earth's interior?
- Earthquakes create waves
- Surface waves - some undulate up and down, others side to side. As these pass through soil, rock, buildings, etc. they exhibit plastic behavior. Things bend and/or break and stay that way.
- Body waves - mainly elastic, two main types.
- P (primary) waves, particles are displaced in the same direction by compression. Can affect all materials.
- S (secondary) waves, particles are displaced at right angles to the wave direction. Cannot affect fluids, so cannot transmit through liquids or gas.