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Geology 155. Oceanography. What is Oceanography?. Oceanography Subdisciplines. Geological. Physical. Chemical. Biological. How Do the Oceans Impact Us?. Hurricane Katrina. Indonesia Tsunami. Hurricane Katrina. Hurricane Katrina. 2004 Indonesia Tsunami.
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Geology 155 Oceanography
OceanographySubdisciplines • Geological • Physical • Chemical • Biological
How Do the Oceans Impact Us? • Hurricane Katrina • Indonesia Tsunami
2004 Indonesia Tsunami Click image above to view film footage
Gaining Knowledge of the Oceans • Early Voyages • Science for Voyaging • Age of Discovery • Voyaging for Science
Science for Voyaging • Polynesia Colonization • Vikings • Chinese • The Age of Discovery
The Age of Discovery • Prince Henry the Navigator • Christopher Columbus • Ferdinand Magellan
Voyaging for Science • The First Scientific Exploration • James Cook • Charles Darwin • The Challenger Expedition
The Challenger Expedition • Major Contributions . . . • First pure scientific expedition • Life was possible below 549 m (1800 ft) • Discovered 4,717 new species • Collected ocean water information • Temperature, salinity, and water density • Ocean current and sediment distribution
21st Century Technology Underwater • Sonar • Submersibles Satellite • MODIS • QuikSCAT • TRMM
Ocean Facts • About 70% of Earth’s surface is covered by water. • Average depth of the Pacific Ocean = 4,638 m • Average depth of the Atlantic Ocean = 3,872 m • Average temperature = 3.9°C (39.0°F) • Age of oceans = 4 billion years
Hydrologic Cycle • Continuous cycle of how water moves through different reservoirs, or from ocean to air, onto land, to lakes and streams and groundwater back to the sky and ocean.
Hypsographic Curve • Shows distribution of elevations and depths on Earth ( Know how to read graph)