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13 Questions

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Seismic Events in East Greenland 2023

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Questions and Answers

What unique characteristic did the earthquake sensors detect in mid-September 2023?

Localized tremors under specific areas

Unusually high-frequency signals

Continuous vibrations for nine days (correct)

Short and sharp tremors

What event initiated the long-lasting rumble detected in September 2023?

Tectonic plate movement

An underwater volcano eruption

Meteorological disturbances

A landslide and tsunami in a fjord (correct)

How much rock and ice was displaced during the event in East Greenland?

Approximately 10 million cubic yards

Approximately 50 million cubic yards

Approximately 75 million cubic yards

Approximately 33 million cubic yards (correct)

What was the height of the tsunami triggered by the landslide in East Greenland?

650 feet Signup and view all the answers

Which scientist expressed surprise at the nature of the seismic event following the investigation?

Dr. Kristian Svennevig Signup and view all the answers

What phenomenon occurred as a result of the tsunami in the confined fjord?

A standing wave known as a seiche Signup and view all the answers

How long did the seismic signal continue after the landslide and tsunami events?

Nine days Signup and view all the answers

What primary factor contributed to the landslide that triggered the tsunami?

Melting glaciers due to climate change Signup and view all the answers

Where did the landslide originate in relation to the open ocean?

200 km inland Signup and view all the answers

What unique aspect of the fjord system contributed to the tsunami's behavior?

Its complex structure preventing energy dissipation Signup and view all the answers

What was the significance of the seismic activities observed after the landslide?

They provided evidence of a long-lasting seismic phenomenon Signup and view all the answers

Which researcher emphasized the impact of climate change on the landslide event?

Dr. Stephen Hicks Signup and view all the answers

What type of survey revealed the mega-tsunami wave in the fjord?

Danish Navy sonar survey Signup and view all the answers