Earthquake and Volcanic Activity Concepts

A major earthquake struck Norway near Jan Mayen island, raising concerns about a potential volcanic eruption. The earthquake caused significant ground shaking due to ground amplification, especially in areas with sandy volcanic rock. The event was a tectonic earthquake along the Jan Mayen transform fault. Although the earthquake was not volcanic, it could theoretically trigger an eruption if the Beerenberg volcano is close to erupting. Historical data shows a low probability of such eruptions. A hypothetical eruption could involve ash ejection and lava flow, but the likelihood remains low. Geomagnetic storms are unrelated to these geological events.

What time did the earthquake strike near Jan Mayen island?

• 6:30 am

• 5:15 am

• 4:00 am

• 3:33 am

What is the main cause of increased shaking in certain areas during an earthquake?

• Ground amplification

• Seismic wave speed

• Geomagnetic storms

• Volcanic activity

What is the main composition of the volcanic rock on Jan Mayen island?

• Sandstone

• Basalt

• Limestone

• Granite

What type of fault movement was responsible for the earthquake near Jan Mayen?

• Reverse fault

• Left lateral strike slip

• Right lateral strike slip

• Normal fault

Under what conditions can an earthquake trigger a volcanic eruption?

• When the volcano is dormant

• When there is a geomagnetic storm

• When the volcano is already close to erupting

• When the earthquake is below magnitude 4

What is the minimal theoretical MMI shaking required to potentially trigger a volcanic eruption?

• MMI 4

• MMI 5

• MMI 3

• MMI 6

How many historical earthquakes have triggered eruptions at Beerenberg volcano?

• 10 out of 28

• 15 out of 28

• 5 out of 28

• 2 out of 28

What is the likelihood of Beerenberg volcano erupting soon?

• Very high

• Moderate

• Low

• Certain

What type of volcanic formation is most likely if Beerenberg erupts?

• Stratovolcano

• Cinder cone

• Tuff ring

• Shield volcano

What is the relationship between geomagnetic storms and earthquakes?

• Directly related

• Indirectly related

• No relation

• Causes earthquakes