Krakatau Facts Volcanic Island in Indonesia Between Java and Sumatra

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Presentation transcript:

Krakatau Facts Volcanic Island in Indonesia Between Java and Sumatra About 7 km across Rising 800 meters above sea level Long active volcano Eruptions over several days 10 a.m., August 26, 1883: Explosion Explosion = 150 megatons of dynamite Heard 3600 km away in SE Australia 4 km3 of ash shot 30 km high

Remnant Island Survived Rakata remained above sea level Covered in 40 meters of ash Temperatures at eruption 300o C to 850o C No life observed

The Damage Krakatau and nearby islands sank Tidal waves over 36 meters high Destroyed 295 towns on Java and Sumatra Killed over 35,000 people Ash cloud affected world climate

A Century Later: 1984-85 Thick green rain forest No pythons seen 30 species of birds, 9 species of bats Several species of rats and reptiles Over 300 species of small animals Life Covers a New Geography

Life Returns to Rakata Return of life studied by scientists Spring 1884: A tiny spider Fall 1884: A few shoots of grass 1886: 15 species of grass and shrubs 1889: Large lizard eating crabs on coast 1897: 49 species of grass and shrubs

Decades Later 1919: A large python; patches of forest 1928: Almost 300 species of grasses 1929: Several pythons seen; forests covered island