Earthquake Evidence from Sediment Cores

Рет қаралды 6,046

2 жыл бұрын

Charlotte Pizer drills sediment cores on the East Coast of New Zealand in order to find evidence of past earthquakes that have pushed the land either up or down. This is helping to build our understanding of how the Hikurangi plate boundary produces earthquakes on different faults including the subduction fault itself that underlies the eastern North Island.
With thanks to the Maungaharuru Tangitū Trust and the Ngāti Pāhauwera Development Trust for supporting this research in the Pakuratahi Valley.
The research is a collaboration between GNS Science and Victoria University of Wellington.
SIGN UP for Out There Learning news, articles and updates: julianthomson.substack.com/
Keen to massively BOOST YOUR SCIENCE COMMUNICATION IMPACT? More info here: courses.outtherelearning.co.n...
Visiting schools to talk about your science? This is how to TURN INFORMATION INTO INSPIRATION! courses.outtherelearning.co.n...

Пікірлер: 39

@GeologyNick 2 жыл бұрын

Really enjoyed this. Well done. Thank you.

@OutThereLearning 2 жыл бұрын

Glad you enjoyed it!

@milkismurder 2 жыл бұрын

Amazing, I've seen core analysis for big changes on long timescales but nothing as recent and specific as this. Love the reference point of the ash layer

@OutThereLearning 2 жыл бұрын

Thanks for your feedback!

@geoffreynolds4740 2 жыл бұрын

I have recently discovered this channel and I have to say, as a retired geography / geology teacher this reminds me of the good old days and all the things I have forgotten. Thank you from 30 miles west of London.

@OutThereLearning 2 жыл бұрын

Thanks so much for your appreciation!

@JP-cy1lw Жыл бұрын

The British Isles are the Mecca of Geology, nowhere else compares!

@JP-cy1lw Жыл бұрын

An excellent upload, made even better by the voice clarity and the fact that no annoying vertical video was included. Subscribed!

@OutThereLearning Жыл бұрын

Thanks!

@complimentary_voucher 2 жыл бұрын

Great work, the graphic was fab, thanks!

@OutThereLearning 2 жыл бұрын

Thank

@sammcnaughton5961 2 жыл бұрын

Really interesting, great work!

@OutThereLearning 2 жыл бұрын

Thanks!

@Chris-NZ 2 жыл бұрын

Really interesting. :)

@OutThereLearning 2 жыл бұрын

Cheers!

@thundaga4005 2 жыл бұрын

Quite amazing to see that core. Note that although the evidence seems pretty clear, she didn't want to declare certainty for the whole East Coast until more samples - how science is done.

@OutThereLearning 2 жыл бұрын

Indeed

@michaelpether1331 2 жыл бұрын

Thanks for a very clear explanation so that the layperson can understand - along with Af8 this is extremely valuable research and findings for the population to develop and commit to preparedness.

@OutThereLearning 2 жыл бұрын

Thanks - Great that you like it

@Not_all_as_it_seems 2 жыл бұрын

A 6m lift occurred in Napier during 1931 EQ, i think it was a 6.3. It would be safe to assume that the Hikurangi subduction zone can be thanked for this incident.

@OutThereLearning 2 жыл бұрын

Indeed...

@davecurtis8833 2 жыл бұрын

Very interesting. Would be be great to see a future video with the results of the sea cores and cores from the nearby valleys.

@OutThereLearning 2 жыл бұрын

Thanks for your comment and suggestion

@malcolmanon4762 2 жыл бұрын

Nice video :) I was wondering how you control for sea level changes - either due to tectonic uplift or changes in global sea level due to fluctuations in the volume of the cryosphere.

@OutThereLearning 2 жыл бұрын

Sea level has not changed much over this time scale compared to the amounts of uplift and subsidence. Therefore the changes can be attributed to tectonic movements.

@muzikhed 2 жыл бұрын

Interesting to see how you read the core samples. You guys from Out There Learning do a brilliant job with your videos, they are all so well made and highly interesting, informative and enjoyable . It must be reassuring for New Zealanders to know the have an enthusiastic group of scientists working in their benefit to understand the local past, present and future geological situation.

@OutThereLearning 2 жыл бұрын

Thanks for your kind feedback

@paulthomson2288 2 жыл бұрын

Great explanation and very clear interpretations of how to read a core. I also feel much safer living in Havelock North at 65m above sea level rather than thinking about realestate in Westshore in Napier.

@OutThereLearning 2 жыл бұрын

Thanks for watching!

@user-js6wg1nt5w 2 ай бұрын

Very informative. Thank you 🎉

@OutThereLearning 2 ай бұрын

Thanks

@mbvoelker8448 2 жыл бұрын

Wow. I've never seen someone read a core that way. Cool!

@OutThereLearning 2 жыл бұрын

Great that you found it interesting!

@MatthewWalkerNZ 2 жыл бұрын

How do we know the quick changes are not simply the top layers of sediment being washed away? Is it just not an environment where that happens - or comparison with other samples?

@SheepWaveMeByeBye 2 жыл бұрын

They can date samples from just above and just above the abrupt change, to see if they have a similar age.

@OutThereLearning 2 жыл бұрын

Really good question and you have pointed at the answer. This is one reason that multiple cores are taken both locally and regionally, to see if the same changes are recorded consistently or not