ALERT LEVELS

unit viii. volcanoes

start

effects of volcanic eruptions

Explain positive and ill effects of a volcanic eruption.

Explain the roles and responsibilities of PHIVOLCS.

Discuss the classifications of volcanic activity.

objectives

01

INACTIVE VOLCANO

Dormant volcanoes have not erupted for a very long time but may erupt at a future time. Extinct volcanoes are not expected to erupt in the future.

Volcanoes are said to be active if they have already erupted in the past or in recent times and still capable of erupting anytime.

ACTIVE VOLCANO

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positive effects

Generate tourism

provide valuable nutrients to the soil

heat and electricity

provided habitat to species

create new islands

Erupting volcanoes extraordinary scenery are beautiful and natural that they attract tourists to the area bringing in some economic value.

1. Generate Tourism

unit viii. volcanoes

positive effects of an eruptions

The lava and ash deposits during an eruption break down to provide valuable nutrients to the soil.

2. Soil Nutrients

unit viii. volcanoes

positive effects of an eruptions

The high level of heat and electricity inside the Earth, close to a volcano can provide opportunities for generating geothermal energy.

3. Heat & electricity

unit viii. volcanoes

positive effects of an eruptions

This provide refuge for rare plants and animals from human and other destructive organism.

4. Habitat to species

unit viii. volcanoes

positive effects of an eruptions

Volcanoes create new islands and add to the continents.

5. Create new islands

unit viii. volcanoes

positive effects of an eruptions

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negative effects

volcanic gases

pyroclastic flows

lahar

volcano slides

lava flows

The most abundant gas typically released into the atmosphere from volcanic systems is water vapor.

1. Volcanic gases

unit viii. volcanoes

negative effects of an eruptions

A high density mixtures of hot, dry rock fragments and hot gases that move away from the vent that erupted them at high speeds.

2. Pyroclastic flows

unit viii. volcanoes

negative effects of an eruptions

Lahar is an Indonesian term that describes a hot or cold mixture of water and rock fragments flowing down the slopes of a volcano and river valleys.

3. Lahar

unit viii. volcanoes

negative effects of an eruptions

Landslides are large masses and rock and soil that fall, slide or flow very rapidly under the force of gravity.

4. Volcanic landslides

unit viii. volcanoes

negative effects of an eruptions

Streams of molten rock that pour or ooze from an erupting vent. It destroy everything in their path.

5. Lava flows

unit viii. volcanoes

negative effects of an eruptions

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) is a service institute of the Department of Science and Technology (DOST) that is principally mandated to mitigate disasters that may arise from volcanic eruptions, earthquakes, tsunami and other related geotectonic phenomena.

HELLO! We LAVA You!

phivolcs

• Predict the occurrence of volcanic eruptions and earthquakes and their related geotectonic phenomena.
• Determine how eruptions and earthquakes shall occur and also areas likely to be affected.
• Generate sufficient data for forecasting volcanic eruptions and earthquakes
• Mitigate hazards of volcanic activities through appropriate detection, forecast and warning system
• Formulate appropriate disaster preparedness plans

HELLO! We LAVA You!

phivolcs

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Hazardous eruption is imminent, underway or suspected.

Volcano is exhibiting heightened or escalating unrest with increased potential of eruption.

Volcano is exhibiting signs of elevated unrest above known background level.

Volcano is in typical background, non - eruptive state.

WARNING

WATCH

ADVISORY

NORMAL

VOLCANO ALERT LEVELS

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Hazardous eruption is imminent, underway or suspected.

Volcano is exhibiting heightened or escalating unrest with increased potential of eruption.

Volcano is exhibiting signs of elevated unrest above known background level.

Volcano is in typical background, non - eruptive state.

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green

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index

team

DATa

map

process

comparison

timeline

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section

04

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02

01

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TIMELINE

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team

There's no creativity without fun,No innovation without creativity,No success without innovation.Are you ready to do awesome things?

Name

thanks!