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Modern Ocean Exploration
20th century
Modern Exploration
• England 1760 time to spread• Most noticeable effects appear late
1800s• Science/Technology pace of
advancement similar to today
• Steam engines, iron ships
Industrial Revolution
1900
• Underwater ships– Diesel engine, Electric motors, Lead-
acid battery
• Germans sinking Lusitania (used submarine) key factor in USA entering WWI
• Cold War – USA/Soviet Union explore sea and space
1900
1915
1960s and 70s
Main Expeditions• German 1925 – 1927 – Atlantic (14 times!)• mapping Atlantic seafloor with echo-
sounding technology – led to new theories as seafloor was not flat!
• US 1931 – Atlantic• 1st ship specifically designed/built for ocean
studies• Built upon Meteor’s data Mid-Atlantic
Ridge and mapped it
Meteor Expedition
Atlantis
• 1951 – 1953: Atlantic, Pacific and Indian
• Depths using echo-sounding technology
• Built upon Atlantis’ data• Deepest known part of Ocean
Challenger Deep in Marians Trench at 10, 838 m (35, 558 ft)
H.M.S Challenger II
Now, add to your notes
• On L column, by date/main topic
• A little picture/sketch that will help you remember the event