What are some hazards from both explosive and non-explosive eruptions?

1. What are the hazards of quiet and explosive eruptions?
2. What is a hazard from an explosive eruption?
3. What are the 4 major hazards of eruptions?
4. What is a non explosive eruption?
5. What are indirect volcanic hazards?
6. What are the common earthquake related hazards?
7. Why are volcanic eruptions hazardous?
8. Can you name five 5 geologic hazards posed by an erupting volcano?
9. What hazard is common both due to earthquake and volcanic eruption?
10. Which of the hazards brought by volcanic eruption would you consider the most devastating?
11. What are the types of volcano hazards and what are their impacts to a community?
12. What can happen during non-explosive eruptions?
13. How does non-explosive eruption occur?
14. What are two important factors that affect the explosiveness of a volcanic eruption?

What are the hazards of quiet and explosive eruptions?

Two hazards are that a quiet eruption causes are: The eruption is quiet so the people would not be aware of the explosion. So, the lava could harm their homes or vehicles. Also, the ashes and acid rain could be damaging to their skin and lungs.

What is a hazard from an explosive eruption?

Larger events can generate pyroclastic surges—hot, ground-hugging, and fast-moving currents of rocks and gas—and send a column of rocks, ash, and gas high into the atmosphere. ... The downwind ash plume from such eruptions also poses a hazard to aircraft.

What are the 4 major hazards of eruptions?

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 is a non explosive eruption?

Nonexplosive eruptions are the most common type of volcanic eruptions. These eruptions produce relatively calm flows of lava in huge amounts. ... Vast areas of the Earth's surface, including much of the sea floor and the Northwestern United States, are covered with lava form nonexplosive eruptions.

What are indirect volcanic hazards?

Indirect hazards are volcanism-induced environmental changes that lead to distress, famine, or habitat destruction. Indirect effects of volcanism have accounted for approximately 8 million deaths during historical times, while direct effects have accounted for fewer than 200,000, or 2.5% of the total.

What are the common earthquake related hazards?

These include ground shaking, landslides, liquefaction, and in some areas, tsunamis. These primary hazards often produce secondary hazards such as ruptured utility lines, hazardous spills, and fires. Buildings can crumble or collapse, trapping people inside and burying streets in rubble.

Why are volcanic eruptions hazardous?

Volcanic ash is not like ash from a fire: it is made up of tiny pieces of rock and volcanic glass. This poses a serious health hazard because inhalation of volcanic ash can lead to major respiratory problems. Recent eruptions in Iceland and Indonesia have generated large ash clouds that disrupted nearby air traffic.

Can you name five 5 geologic hazards posed by an erupting volcano?

Volcanic Eruptions - Lava Flows, Ash Fall, Lahars. Landslides - Rock Falls or Slides, Debris Flows, Mud Flows. Floods - Inundation, Erosion. Snow Avalanches.

What hazard is common both due to earthquake and volcanic eruption?

This zone of volcanism and earthquakes, involving several plates and trenches and manifested in Latin America by the Andes Mountains and their extension into Central America and Mexico, virtually encircles the Pacific Ocean and is known as the "Ring of Fire." Geologic hazards-earthquakes, the landslides they induce, ...

Which of the hazards brought by volcanic eruption would you consider the most devastating?

Lava-flows, together with gas exhalations, mud pools, hot springs and rock avalanches, have an intermediate range, being most lethal in the surrounding of the volcano. Tephra fall can be dangerous, especially for persons with respiratory problems, over a distance of 270 miles (170km).

What are the types of volcano hazards and what are their impacts to a community?

We have witnessed many kinds of destructive phenomena at U.S. volcanoes: hot, fluid lava flows that overrun communities; powerful explosions that devastated huge tracts of forest; choking debris avalanches and mudflows that destroy bridges and homes; noxious gas emissions that impact human health; airborne ash clouds ...

What can happen during non-explosive eruptions?

Non-explosive volcanic eruptions generally occur when magma is thin and flows easily. Lava flows out of the volcano, rather than blocking the vent, and little or no gas forms inside the volcano. The lava simply pours out and flows over the ground like a river.

How does non-explosive eruption occur?

Lava is molten rock erupted at the ground surface. When molten rock is beneath the ground, it is called magma. Lava flows are the effusive (non-explosive) outpourings of lava, and usually flow slower than walking pace. Lava flow types include a'a, blocky and pahoehoe.

What are two important factors that affect the explosiveness of a volcanic eruption?

In this zone, you will see rocks from all these areas. A volcano's explosiveness depends on the composition of the magma (molten rock) and how readily gas can escape from it. As magma rises and pressure is released, gas bubbles (mainly of water vapor and carbon dioxide) form and expand rapidly, causing explosions.