awesome mate. I have all the australian multibeam bathemerty as well as DEM models and when all the layers are put together just right, the hillshade aspect really shows the wash over path. The biggest thing is the topsoil deposit locations... the gulf of carpenteria is one of those I suspect. The other thing is that like the japan 2011 tsunami, the inrush of water is big but the drain back after the high water point is reached is the worst bit. That is where a signifigant amount of topsoil, vegetation and anything that can float get sucked out to sea very quickly, and deposited to the sea floor accordinly. Cheers!
Hey mate, thanks for the support. I'll be looking at the bathometry more in the next few months, I think there is more of the story to tell. The topsoil of the Perth Plain is the subject of a future episode. Looks like three different tsunami inundations brought in waves of sand during different events during different epochs. Stay tuned!.
Nice work mate. I'm convinced Broke inlet was formed by the burkle impact... the wash over topped the cliffs then swirled about in two eddies then broke out to the ocean...
There are some small wind and storm blown dunes near Busselton, which are similar to the dunes at Swanbourne in Perth, but these dunes I am describing around Bunbury are very different to wind blown dunes. These dunes contain large rock fragments, which cannot be wind blown and the orientation also bears no correlation to the direction of the wind. I have two episodes coming up in a few months looking at how wind blown sand dunes differ, and a close look at these dunes including the composition.
Have you done any research in northern western Aus ?? I’ve spent a lot of time driving in the Pilbara and the whole landscape is covered in evidence of massive amounts of water being there at some point Or is this from a much earlier time from when the ocean ran through the top half of WA to the bottom of South Australia
Not yet no. Just a logistically difficult place for me to get to and spend any time. I am keen to visit Tamala, Dirk Hartog Island, as well as essentially the entire coastline. This is an under documented region from a scientific standpoint.
👍 Definitely agree with this comment. The Bungle Bungles is part of an ancient ocean reef. Hope you can get there to give your thoughts... are you a geologist?
Have you looked into the Burkle crater theory as to the possible cause of the tsunami? There is definitely evidence of it on Madagascar's shoreline. Great work with your videos too 👍
Thanks for the support. I actually investigated this theory at the very start of this series, but, there is simply no evidence that the Indian Ocean was hit with an asteroid big enough to generate a tsunami 5000 years ago. In fact, the Burkle Crater is supposed to be maybe 25 km across, which means an asteroid hitting the ocean, which is 5km or so deep, would have had to have had a diameter of perhaps 6km in order to have enough mass to survive the vaporising effects of the water and still hit the ocean floor and then also leave such a crater. That's almost as large as the dinosaur killer 66 million years ago. A future video is planned to debunk Burkle.
How would you define these tsunami deposits? What distinguishes them from non-tsunami deposited material? Do you disagree with the conventional understandings of sedimentology along the WA coast ? and if so, which parts particularly and why? Are you able to refute these established theories with a more robust body of evidence? If I did not misinterpret your explanation, you state that the shadow effect would have prevented the deposition of sediment into the coastal area immediately east Cape Naturaliste. Why is this the case? How would the refraction of a high-energy tsunami wave around a headland impact its dissipation so severely, or was this not properly integrated into the analysis? I would suspect that even a partly de-energised wave impacting this area of coastline would still create evidence of sediment deposition, however this is just my opinion? The evidence you present is interesting, yet it seems to be vulnerable to cherry-picking and confirmation bias, among other methodological limitations. Some relationships you make appear to rely purely on superficial observation and lack robust support to establish true causative factors. Would like to hear your response to these issues 👍.
Hey Scha, I am currently doing some research in the UK and literally gathering evidence to show the difference between the sedimentology around the Irish Sea, with that of the south west of Western Australia. This will make up episode 8. When I am back in WA I will write a full reply to the points you raise. Very simply WA lacks the conditions needed to form sand dunes in the same way they do in other regions. Combine this with the different shapes, orientations and composition of many of the dunes in the south west of WA, and the tsunami theory becomes more plausible.
The directions of the chevrons also coincidently align with the direction of the freo doctor. I do appreciate you videos and want you to continue your research and videos, more concrete evidence I think is needed. I look forward to your future videos where I think you said you’ll explain this in more detail :)
Ignore this video!, it just a scare tactic, West. Australia is right in the middle of a stable tectonic plate. Safest place in the world. This uploader is just chasing hits on YT!
Did you watch the video? Plus the others in the series? That's exactly the theme. Despite being so far away from plate boundaries, West Australia has tsunami deposits along the entire Indian Ocean coastline. This video is the where and the how. A future video will discuss the why.
These events appear to be linked to ice age and interglacial sea level changes, so I am not particularly worried about this happening tomorrow. The problem of being in the lee of an archipelago is the total unpredictability of where waves are going to converge and experience a positive interreference as happened in Southern India in 2004.
@@WATsunami The positive interference is a great point. Thanks for highlighting it. I always imagined tsunami wave energy would be dampened by the islands. I guess Im not imagining on a big enough scale
Well done mate as this one was really interesting, its been a great series and lots of time and effort to produce.
Cheers Chris. This episode has taken longer than usual. A lot of research and thought went in to it. More to come.
Just found this channel and look forward to more uploads . Fascinating work 👍
Thank you
This is well done. Good work!
Thank you. Bunbury resident here 😎
I will be in Bunbury again this Saturday gathering more evidence.
I always wondered why I could find sea shells digging in the garden
What's the location? Have to be careful identifying shells as there are some very aquatic looking land snails.
awesome mate. I have all the australian multibeam bathemerty as well as DEM models and when all the layers are put together just right, the hillshade aspect really shows the wash over path.
The biggest thing is the topsoil deposit locations... the gulf of carpenteria is one of those I suspect.
The other thing is that like the japan 2011 tsunami, the inrush of water is big but the drain back after the high water point is reached is the worst bit.
That is where a signifigant amount of topsoil, vegetation and anything that can float get sucked out to sea very quickly, and deposited to the sea floor accordinly.
Cheers!
Hey mate, thanks for the support. I'll be looking at the bathometry more in the next few months, I think there is more of the story to tell.
The topsoil of the Perth Plain is the subject of a future episode. Looks like three different tsunami inundations brought in waves of sand during different events during different epochs. Stay tuned!.
Fascinating. Cowtown! 🙌
Evidence all along this coastline.
Nice work mate. I'm convinced Broke inlet was formed by the burkle impact... the wash over topped the cliffs then swirled about in two eddies then broke out to the ocean...
What about the predominant South West winds building sand dunes? Those shadow spots are protected from those winds.
There are some small wind and storm blown dunes near Busselton, which are similar to the dunes at Swanbourne in Perth, but these dunes I am describing around Bunbury are very different to wind blown dunes. These dunes contain large rock fragments, which cannot be wind blown and the orientation also bears no correlation to the direction of the wind. I have two episodes coming up in a few months looking at how wind blown sand dunes differ, and a close look at these dunes including the composition.
Have you done any research in northern western Aus ?? I’ve spent a lot of time driving in the Pilbara and the whole landscape is covered in evidence of massive amounts of water being there at some point
Or is this from a much earlier time from when the ocean ran through the top half of WA to the bottom of South Australia
Not yet no. Just a logistically difficult place for me to get to and spend any time. I am keen to visit Tamala, Dirk Hartog Island, as well as essentially the entire coastline. This is an under documented region from a scientific standpoint.
👍 Definitely agree with this comment. The Bungle Bungles is part of an ancient ocean reef. Hope you can get there to give your thoughts... are you a geologist?
@@nauticaldaydreams I studied geography and geology at college, not to degree level.
Thankyou. Im in Albany WA
Have you looked into the Burkle crater theory as to the possible cause of the tsunami?
There is definitely evidence of it on Madagascar's shoreline.
Great work with your videos too 👍
Thanks for the support. I actually investigated this theory at the very start of this series, but, there is simply no evidence that the Indian Ocean was hit with an asteroid big enough to generate a tsunami 5000 years ago. In fact, the Burkle Crater is supposed to be maybe 25 km across, which means an asteroid hitting the ocean, which is 5km or so deep, would have had to have had a diameter of perhaps 6km in order to have enough mass to survive the vaporising effects of the water and still hit the ocean floor and then also leave such a crater. That's almost as large as the dinosaur killer 66 million years ago. A future video is planned to debunk Burkle.
@@WATsunami
Seems like you're all over it.. this all sounds very interesting, I look forward to the video. Thanks for the reply 👍
How would you define these tsunami deposits? What distinguishes them from non-tsunami deposited material?
Do you disagree with the conventional understandings of sedimentology along the WA coast ? and if so, which parts particularly and why? Are you able to refute these established theories with a more robust body of evidence?
If I did not misinterpret your explanation, you state that the shadow effect would have prevented the deposition of sediment into the coastal area immediately east Cape Naturaliste. Why is this the case? How would the refraction of a high-energy tsunami wave around a headland impact its dissipation so severely, or was this not properly integrated into the analysis? I would suspect that even a partly de-energised wave impacting this area of coastline would still create evidence of sediment deposition, however this is just my opinion?
The evidence you present is interesting, yet it seems to be vulnerable to cherry-picking and confirmation bias, among other methodological limitations. Some relationships you make appear to rely purely on superficial observation and lack robust support to establish true causative factors.
Would like to hear your response to these issues 👍.
Hey Scha, I am currently doing some research in the UK and literally gathering evidence to show the difference between the sedimentology around the Irish Sea, with that of the south west of Western Australia. This will make up episode 8.
When I am back in WA I will write a full reply to the points you raise. Very simply WA lacks the conditions needed to form sand dunes in the same way they do in other regions. Combine this with the different shapes, orientations and composition of many of the dunes in the south west of WA, and the tsunami theory becomes more plausible.
The directions of the chevrons also coincidently align with the direction of the freo doctor. I do appreciate you videos and want you to continue your research and videos, more concrete evidence I think is needed. I look forward to your future videos where I think you said you’ll explain this in more detail :)
Ignore this video!, it just a scare tactic, West. Australia is right in the middle of a stable tectonic plate. Safest place in the world. This uploader is just chasing hits on YT!
Did you watch the video? Plus the others in the series? That's exactly the theme. Despite being so far away from plate boundaries, West Australia has tsunami deposits along the entire Indian Ocean coastline. This video is the where and the how. A future video will discuss the why.
Soon as you acknowledged the aboriginal people i switched off. Not interested in woke bull....
Very interesting topic mate. Good video. Esperance WA, safely in the lee of an archipelago 😁👍 Happy with that
These events appear to be linked to ice age and interglacial sea level changes, so I am not particularly worried about this happening tomorrow. The problem of being in the lee of an archipelago is the total unpredictability of where waves are going to converge and experience a positive interreference as happened in Southern India in 2004.
@@WATsunami The positive interference is a great point. Thanks for highlighting it. I always imagined tsunami wave energy would be dampened by the islands. I guess Im not imagining on a big enough scale
@@chadogrady9017 I am more than happy to never experience a tsunami in my lifetime.