What were the effects of Krakatoa eruption?

During the next 24 hours, hot avalanches of ash raced down the volcano and across the sea. Most of the volcanic island collapsed into the ocean, triggering tsunamis and creating a giant underwater crater, or caldera. The eruption devastated surrounding islands and the coast of Java, causing over 36,000 fatalities.

What are the possible primary and secondary effects of volcanoes?

VOLCANIC HAZARDS 3 Primary hazards are direct hazards from eruption such as pyroclastic flows, pyroclastic falls, lava flows and poisonous gas release. The secondary hazards are the indirect consequences such as lahars, tsunamis and epidemic disease and post-eruption famine.

What are the 3 main effects of volcanic eruptions?

Major health threats from a volcanic eruption Health concerns after a volcanic eruption include infectious disease, respiratory illness, burns, injuries from falls, and vehicle accidents related to the slippery, hazy conditions caused by ash.

Who did Krakatoa effect?

The combined effects of pyroclastic flows, volcanic ashes and tsunamis had disastrous results in the region. The official death toll recorded by the Dutch authorities was 36,417 and many settlements were destroyed, including Teluk Betung and Ketimbang in Sumatra, and Sirik and Semarang in Java.

What effect does Krakatoa have on the local area?

Dense clouds immediately lowered temperatures in the immediate area. As the dust spread, according to later studies, the eruption likely caused a drop in average global temperatures for several years.

What are secondary impacts?

Effects are often classified as primary and secondary impacts. Primary effects occur as a direct result of the ground shaking, eg buildings collapsing. Secondary effects occur as a result of the primary effects, eg tsunamis or fires due to ruptured gas mains.

What is the primary secondary and tertiary effect of volcanic eruption?

Primary effects: Effects directly caused by the eruption. Secondary effects: Effects of events triggered by the eruption. Tertiary effects: Effects of long term or permanent changes brought about by the eruption.

What are the effects of a volcano?

Volcanoes can change the weather. They can cause rain, thunder and lightning. Volcanoes can also have long-term effects on the climate, making the world cooler. Fast-moving lava can kill people and falling ash can make it hard for them to breathe.