How is a Kermadec Trench formed?

The Kermadec Trench is one of Earth’s deepest oceanic trenches, reaching a depth of 10,047 metres (32,963 ft). Formed by the subduction of the Pacific Plate under the Indo-Australian Plate, it runs parallel with and to the east of the Kermadec Ridge and island arc.

Where is the Hikurangi subduction zone?

The Hikurangi plate boundary, located off the East Coast of the North Island, is where the Pacific tectonic plate subducts (or dives underneath) the Australian tectonic plate – and is what scientists call a subduction zone.

What is the type of plate boundary that formed the Hikurangi Trench?

The Hikurangi tectonic plate boundary is a convergent boundary. This means that the Australian and Pacific plates are pushing against each other. There are two kinds of plates – oceanic and continental plates.

What type of convergent boundary is the Tonga Trench?

The Tonga Trench is a convergent plate boundary. The trench lies at the northern end of the Kermadec-Tonga Subduction Zone, an active subduction zone where the Pacific Plate is being subducted below the Tonga Plate and the Indo-Australian Plate.

Where is the Kermadec?

The Kermadec Islands are the visible surface of a chain of about 80 volcanoes, stretching for 2,600 km between Tonga and New Zealand. Raoul Island is the biggest of the group, which begins at the southernmost L’Esperance. While the other islands and islets are smaller, several of them harbour important bird colonies.

How long is Kermadec Trench?

about 750 mi
Kermadec Trench, submarine trench in the floor of the South Pacific Ocean, about 750 mi (1,200 km) in length, forming the eastern boundary of the Kermadec Ridge.

How was the Hikurangi Trench formed?

The Hikurangi Trench was created by the Pacific tectonic plate subducting under the Australian tectonic plate. The ocean plate (the Pacific Plate) is being pushed (converged) under the thicker Australian continent plate and as it is forced underneath it creates a big gully called a trench.

How far away is the Hikurangi Trench from Napier?

approximately 158 km’s
Napier is approximately 158 km’s away from the Hikurangi trench. From research the East Coast of NZ has the highest risk in the country of a Tsunami. There has been a geological record shows that the area has been impacted by large Tsunami in the past, on average approximately one every 900 years.

Where is the Hikurangi Trough?

North Island of New Zealand
The Hikurangi Trench, also called the Hikurangi Trough, is an oceanic trench in the bed of the Pacific Ocean off the east coast of the North Island of New Zealand, lying between the southern end of the Cook Strait and the Chatham Rise.

How far away from Napier is the Hikurangi Trench?

about 15 km
The Pacific Plate dives westward beneath the North Island, starting at the offshore Hikurangi Trough. It lies about 25 km beneath Wellington and about 15 km beneath Napier and Gisborne.

What type of trench is the Tonga Trench?

oceanic trench
The Tonga Trench is an oceanic trench located in the southwestern Pacific Ocean. It is the deepest trench in the Southern hemisphere and the second deepest on Earth. The fastest plate-tectonic velocity on Earth is occurring at this location, as the Pacific Plate is being subducted westward in the trench.

What tectonic plates formed the Tonga Trench?

It is a subduction zone where Pacific plate is going under the Indo-Australian plate. As a result, the Pacific plate bends towards below and the Indo-Australian plate is uplifted. That tectonic event has created the Tonga Trench and some other trenches and ridges.