Earthquake’s Unseen Impact - Mapping the seafloor off Kaikoura

Play Video

$9,500

Prizes

1,558

Views

1. Please provide a brief summary of your video and research.

Shortly after the November 2016 Kaikōura earthquake NIWA’s Dr Joshu Mountjoy led a team of scientists to the Kaikōura coast area to investigate how the magnitude 7.8 quake had affected the sea floor and nearby canyon system.

The Natural Hazards Research Platform funded project had two aims: To map the offshore faults ruptured when the earthquake happened, and to investigate submarine landslides at the head of the Kaikōura Canyon.

Using multibeam and seismic echosounder technology to map the area, Dr Mountjoy was able to quickly compare imagery of the canyon rim made in 2013 with the new data captured after the earthquake.

The recorded changes to many areas of the sea floor around Kaikōura dwarf what has been observed on land. While the structure of the canyon itself has remained intact, huge undersea mudslides failed down into the canyon system destroying the rich canyon floor ecosystem.

“In 2013 everything at the head of the canyon was smooth and draped in mud. The new data from this survey show that the earthquake resulted in widespread landslides. Almost every part of the upper slope had mud removed from it. Videos show that this mud has also wiped out most of the life on the canyon floor.”

Following this initial survey Dr Mountjoy has been leading an effort to analyse additional data collected with RV Tangaroa in the deeper parts of the canyon and the 1500 km-long Hikurangi Channel.

“What we now know is that this event is the first direct documented example of “canyon-flushing”. Hundreds of millions of cubic metres of mud have cascaded down the canyon, eroding the seafloor and transporting sediment at least 700 km down the channel. This event will change how the international community understands deep sea sediment transport and submarine canyon development.”

2. Do you have a video hashtag for sharing via twitter?

@niwa_nz

Comments

6
cassandra story
11 months ago

In a legal/institutional environment that subsidized parent choice of curriculum and instructional methods, this would be a non-issue. On smart essay writing service you could buy 12 years of Victim Studies, non-judgmental English and Discovery Math and your neighbor could buy French III ( Literature), Calculus, Chemistry, and C+ programming. Your Ethnic Studies graduates will serve the engineers coffee.

Zoe Wilbur
8 months ago

I positive that searching for what is stated approximately the Buddha’s Holy Spirit in Pahamasambodhi could bring about a few curiosity and interest in similarly Buddhist research. This is pretty an thrilling topic. this could result in every other research subject Write My Assignment For Me of Buddhist/faith research. The studies specialize in searching out the which means of each the physical frame and his Holy Spirit.

funny jokes
7 months ago

Oh! This article has suggested to me many new ideas. deadpool 2 jokes
I will embark on doing it. Hope you can continue to contribute your talents in this area. Thank you.

Julie Higgs
6 months ago

Hi, I absolutely sure that you are right. Everyone treat information with their eyes so it is smarter to wonder individuals with the utilization of pictures and some other visual material. Yet, with regards to the writing, you would better begin composing appropriately. You will require to know each lead and a few prerequisites for this sort of composing. But whenever you have a hard time writing your paper, just ask an expert to write my essay abu dhabi and you will get it. This is the fruitful administration which has a considerable measure of advantages. We work professionally, give convenient conveyance and unique outcomes. Check the site to know more

petter son
about 1 month ago

This is my first time i visit here. I discovered such a large number of fascinating stuff in your web journal particularly its discourse. From the huge amounts of remarks on your articles, I figure I am not by any means the only one having all the satisfaction here! keep doing awesome
buy dissertation online

matt hummel
29 days ago

Wonderful site and I wanted to post a note to let you know, "Good job"! I’m glad I found this blog. Your blog site has presented me most of the strategies which I like. Thanks for sharing this.
- gta 5 cheats