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61.

Pangaea

Geophysicist and geologist Tanya Atwater talks about the super continent Pangaea, thought to have broken up into the continents as we know them today beginning about 200 million years ago.
Online
2015; 2011
62.

Turbidity Currents: Module 3, Part 1

Professor Trujillo demonstrates the properties of a turbidity current.
Online
2018; 2010
63.

Asthenosphere: Module 2, Part 1

Professor Trujillo demonstrates the properties of the Asthenosphere layer of the Earth's crust.
Online
2018; 2010
64.

Asthenosphere: Module 2, Part 2

Professor Trujillo demonstrates the properties of the Asthenosphere layer of the Earth's crust.
Online
2018; 2010
65.

Plate Tectonics and Earthquake Distribution

Geophysicist and geologist Tanya Atwater talks about the correlation between plate boundaries and earthquake distribution.
Online
2015; 2011
66.

Children's Pool

While exploring the intertidal zone at a San Diego beach, Professor Trujillo focuses on the children's pool.
Online
2018; 2010
67.

Density Stratification: Module 1, Part 1

Professor Trujillo discusses and demonstrates the principle of density stratification.
Online
2018; 2010
68.

Wavy Turban Snail

While exploring the intertidal zone at a San Diego beach, Professor Trujillo focuses on the wavy turban snail.
Online
2018; 2010
69.

How Tides Work

Renowned oceanographer and geophysicist Walter Munk talks about the role of gravity and the Moon in tidal processes. He also discusses early ideas about tides in the days before Sir Isaac Newton developed his theory of gravity.
Online
2015; 2011
70.

Sea Anemone

While exploring the intertidal zone at a San Diego beach, Professor Trujillo focuses on the sea anemone.
Online
2018; 2010
71.

Ocean as a Sound Channel, the

Renowned oceanographer and geophysicist Walter Munk talks about differences in the ways sound travels in the ocean as compared to through the air. He observes that the ocean is an ideal medium through which sound can travel.
Online
2015; 2011
72.

Sea Level Change Over Time

Renowned oceanographer and geophysicist Walter Munk talks about the rise in sea level since the last Ice Age. Professor Munk notes that the geologic record indicates that sea level has risen by one hundred and twenty meters since that time--an amount Dr. Munk calls "enormous."
Online
2015; 2011
73.

Oceanic Crust vs. Continental Crust

Geophysicist and geologist Tanya Atwater discusses the differences between continental and oceanic crust. Continental crust tends to be much thicker and would be thicker still were it not for the forces of gravity and erosion. In addition, oceanic crust forms as a result of seafloor spreading, while continental crust is made at subduction zones from the same melting material that rises to make volcanoes.
Online
2015; 2011
74.

Internal Waves: Module 12

Professor Trujillo demonstrates the properties of waves that occur below the ocean's surface, called internal waves.
Online
2018; 2010
75.

The Ekman Spiral: Module 10

Professor Trujillo demonstrates the properties of the Ekman Spiral.
Online
2018; 2010
76.

Water Density: Module 11, Part 1

Professor Trujillo demonstrates the properties of water masses with different densities.
Online
2018; 2010
77.

Moon, the Sun and Tides, the

Renowned oceanographer and geophysicist Walter Munk talks about the relative roles of the Sun and the Moon in tidal processes. He observes that, over time, the Moon is moving further away from the Earth. While the gravitational impact of the Moon is now greater than that of the Sun, eventually, the ratio will be reversed.
Online
2015; 2011
78.

Plate Tectonics and Heat

Geophysicist and geologist Tanya Atwater talks about plate tectonics as a mechanism by which Earth's interior sheds the tremendous heat that builds up as a result of radioactive decay.
Online
2015; 2011
79.

Sea World #1

Senior Animal Care Specialist, Alaina Jasso, talks about Sea World's animal rescue program and the steps she took to pursue a career at Sea World.
Online
2018; 2010
80.

Wave Prediction and Military Operations

Renowned oceanographer and geophysicist Walter Munk talks about the role wave prediction played in the planning of amphibious landings during World War II.
Online
2015; 2011