Margaret River Tsunami Evidence Ep2 Chevron and Sand Wave Evidence
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- Опубліковано 15 жов 2024
- Indian Ocean Mega Tsunami Evidence at the Margaret River Sculpture Park, Hamelin Bay, Western Australia. Episode 2, Snakes and Chainsaws.
From Cape Leeuwin in the south to Cape Naturaliste in the north, there is a distinct and abrupt change in vegetation from coastal heath to mature Karri Tree forest. This change in vegetation is due to a saline sand layer that looks to have been washed in from the coast by an Indian Ocean ancient Holocene mega tsunami. We use Google Earth and Google maps as well as mini drone video footage and a bush walk through tiger snake infested coastal heath covered with tsunami chevrons and a coarse sand wave layer.
Evidence of what is being called a Mega Tsunami is found all along the Indian Ocean coast of Western Australia and South Australia, with evidence stretching all the way to Tasmania. We continue our geology and geography video documentary series in the Cape to Cape region.
Credits:
tsun.sscc.ru/hi...
Scotese, C.R., 2016. PALEOMAP PaleoAtlas for GPlates and the PaleoData Plotter Program, PALEOMAP Project, www.earthbyte.o...
www.tsunamilab....
Google Maps / Google Earth:
SIO, NOAA, U.S. Navy, NGA, GEBCO Landsat / Copurnicus IBCAO U.S. Geological Survey PGC/NASA, CNES / Airbus, Maxar Technologies, TerraMetrics
Music generated by Mubert mubert.com/render
orangefreesoun... by / alexanderblumusic
exploreparks.d...
www.casa.gov.a...
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We acknowledge the traditional custodians of the land, the Wadandi people of the Noongar nation and pay our respects to Elders, past, present and emerging.
Oh great video man please keep this good work going, super interesting, really well done, its a big but not too talked about topic
Thanks Harry. To cover the entire subject I expect to need about 12 to 15 episodes. I have episode 3 mostly edited and episode 4 in the can as raw footage, with a few other episodes in the planning stage.
@@WATsunami ah awesome thats good to hear, will be keen to see em, might have to go for a drive and check out some of these spots.
Been wondering what wouldve happened to the Busselton area being in the middle of the bay and what could be left to see now, or is the sandy geographe bay a result of that? scary to think prob would've seen the water crash over the cape first..
@@harryfromaustralia657 I have been looking at Bussleton. And it is puzzling. Which is very intriguing evidence for later episodes. Bussleton appears to have been in something of a wave shadow. All around the bay appears devoid of evidence. This is in contrast to the Augusta region which appears to have been struck by powerful waves refracting around the Cape Leeuwin Peninsula. Its almost as if the tsunami origin was not the Burckle Crater but was closer to home on the WA continental shelf. Oh could that be a spoiler alert for a future episode? haha
@@WATsunami still gonna continue the series at all?
@@harryfromaustralia657yes I have the next video almost ready to upload. I was working on it over the weekend. I was busy with a couple of other things for a couple of months, and I also had to re-think some of the things I was doing following some new research.
Ever notice how one side of the‘Kwinana Freeway’ is grey ‘hungry sand’ and the other is brown sand!
The freeway divides it nicely
Yes this is actually part of my research, and will be discussed on future episodes. I am seeing evidence of multiple tsunamis going back epochs. Evidence so far leads me to theorise the mega tsunamis which deposited the different sand layers, are widely spaced events happening once or twice every 10s of thousands or even more years apart, and are linked to sea level changes due to glacial periods. Sea level change triggers a continental shell collapse and tsunami, washes in a new layer over the older layer that is now a different colour due to the vegetation, and the process continues for a few more epochs of time.
In some areas, the tsunami went over over several kilometers inland... it was a bad day to be on the beach 5,000 years ago.
Agreed. In the south west, in a low lying area just to the north of the Cape to Cape region, I have looked on Google Earth at deposits up to 13km inland near Bunbury. A few hours drive North of Perth near the Pinnacles region there are sand waves over 30km inland. Looks like we have multiple tsunami events too. This is a regular (every several millennia) occurrence.
Thanks for comment@@WATsunami
Very interesting. What would have been the approximate height of the Tsunami?
There are two main measurements, the height of the waves, and the run up height. Very difficult to estimate how high the waves were, unless someone gets actual pictures or video. This is why the term 'run up height' is used, which means the highest point reached by seawater during the event. During a tsunami, water will often 'slosh', for lack of a better word, to a level above the height of the waves. In this case the maximum run up height is about 220 meters, above current sea levels. Sea level 5000 years ago was a little below where it is currently at. For example Rottnest Island became an island some time around 7 to 6 thousand years ago. So literally, this event, a continental slope landslide off the coast of Boranup and Leeuwin ridges, has the highest run up height of an open ocean tsunami, on planet earth. At this point I run out of knowledge regarding the wave height, as, I think, we need to run some simulations of this event to get a better understanding. Do you know any oceanographers?
Crustal displacement/pole shift-north pole rolls towards the larger magnet as it passes through the solar system
First the magnetic radiation heats the core and the magma plumes all join up beneath the crust.
The land moves, the water stays still
It a video about ancient history. Why acknowledge some people that happened to be there recently?
The event this video refers to is from 5000 years ago. That might seem like "ancient history" to you, but there is evidence of human occupation in this area almost 10x longer ago than that. Nearby Devil's Lair has evidence of human occupation approximately 48,000 years ago, so there's a good reason to acknowledge those who have been here much longer than most of us can comprehend.
Interesting video and very well explanied to and great video to and keep up the interesting work to