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