Natural Disasters in Hawaii

This information report is all about the natural disasters that have occurred in Hawaii in the past 40 to 60 years. it includes the population distribution across Hawaii and how the numbers have increased over the years. It provides clear and visual information with the help of graphs and timelines. There has been many devastating disasters that have hit hawaii with surprise. Think about how it feels to live in a place where you have a chance of dying any day?

Population increase

From 2000 to 2010, Hawaii’s population increased by 12.3%, a statistic attributed largely to consistent migration to the island. Hawaii’s population was 1,360,301 with around 953,207 people living in the city & county of Honolulu.

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What can happen in Hawaii

Hawaii is truly a paradise. However the islands are vulnerable to certain types of natural disasters such as flooding,hurricanes,tsunamis,lava flows, earthquakes, flash floods, tornadoes, waterspouts and especially volcanoes. The Hawaiian islands were formed by volcanic activity. The Hawaiian islands are constructed of 5 main volcanoes.

What are Hawaii most active volcanoes

Hawaii's active volcanoes include: Kilauea, Maunaloa. Maunaloa last erupted in 1984, and Kilauea has been continuously erupting since 1983. Loihi is located underwater off the southern coast of the island of Hawaii; erupting since 1996, this emerging seamount may eventually break the surface, adding a new island to the Hawaiian chain.

How are volcanoes formed

Volcanoes are formed when magma from within the earth’s upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash. Over time as the volcano continues to erupt it will get bigger and bigger.

What is a volcano?

A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur. Gases and rock shoot up through the opening and spill over. Eruptions can cause lava flows, hot ash flows, mudslides, avalanches, falling ash and floods. Volcano eruptions have been known to knock down entire forests. An erupting volcano can trigger tsunamis, flash floods, earthquakes, mudflows and rockfalls.

What is the life cycle of a volcano?

-There are 3 stages of a volcano life cycle: active, dormant and extinct. An active volcano is a volcano that has had at least one eruption during the past tens of thousands of years and most probably will erupt again. A dormant volcano is a volcano that has not erupted in a while and is quiet, but is estimated to erupt again. Extinct volcanoes are volcanoes that hasn’t erupted for a long time and aren’t expected to erupt again.

• Waterspouts

Did you know that the most recent natural disaster happened in Hawaii was on Mar 9, 2016.The natural disaster was a waterspout.There are two major types of waterspouts: tornadic waterspouts and fair-weather waterspouts.

• Tornadic waterspouts

Tornadic waterspouts are tornadoes that form over water, or move from land to water. They have the same characteristics as a land tornado. They are associated with severe thunderstorms, and are often accompanied by high winds, large hail, and frequent dangerous lightning.

• Fair weather waterspouts

Fair weather waterspouts usually form along the flat base line of developing cumulus clouds. This type of waterspout is generally not associated with thunderstorms. While tornadic waterspouts develop downward in a thunderstorm, a fair weather waterspout develops on the surface of the water and works its way upward.
This is a picture of a waterspout

Hawaii’s Earthquakes

How many earthquakes have occurred in Hawaii?

There have been more than 12,000 earthquakes, according to the US geological survey done by geologist Janet Babb.

When was the last big earthquake in Hawaii?

-1868 Hawaii earthquake was the largest recorded earthquake in the history of Hawaii and it’s islands, with a predicted magnitude of 7.9 on the richter scale and it caused at least 77 deaths.

How many earthquakes does Hawaii have in a year?

-The State of Hawaii encounters thousands of earthquakes annually. Many earthquakes are severe enough to be felt on one or more of it’s islands.

How are earthquakes formed?

Earthquakes are caused by the movement of the earth's tectonic plates. Earthquakes occur where the earth's plates meet along plate boundaries.For example as two plates move towards each other, one can be pushed down under the other one can move into the mantle. If this plate gets stuck it causes a lot of pressure on  surrounding rocks. When this pressure is released it produces shock waves. These are called seismic waves. Then that makes everything around, above to shake collapse.

Conclusion

To conclude, this is our presentation about Hawaii and it’s natural disasters. This has all the information on Hawaii’s natural disasters. Such as earthquakes, waterspout and volcanoes
the three main natural disasters . It also includes the population distribution and many fun facts. Thank you for listening.

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