Anonymous at Tue, 12 Mar 2024 13:49:55 UTC No. 16070042

>>16069951
It's widespread enough that submarines track the thermocline layer flows that they don't give away their position from the outer hull's expansion/contraction during depth changing maneuvers.

Anonymous at Tue, 12 Mar 2024 15:07:13 UTC No. 16070164

>>16069951
I'm not sure if it's properly known whey they happen but salinity is certainly part of the solution, they originate from rivers which spew fresh water to the sea, forcing salt water down afterall. More over things like suspended particles will contribute. Also one thing you fail to appreciate is the sheer scale of the these features there can be lot of energy lost as the river travels and still be plenty more to go. A thing to note also is how once a flow forms it self reinforces, digging a channel for itself and causing low pressure which further draws in the water that's following along to the same course. The seabed is pretty soft stuff so even a fairly weak flow can still carve canyons in it.

Anonymous at Tue, 12 Mar 2024 15:54:37 UTC No. 16070225

>>16069951
He said they are formed by turbidites, like the one that broke the original communication cables layed across the Atlantic by Newfoundland.
>>16070164
>More over things like suspended particles will contribute.
This

Anonymous at Tue, 12 Mar 2024 17:28:40 UTC No. 16070375

>>16069951
>A couple of comment pointed out that maybe is due to salinity, but any difference in concentration will dissipate very quickly
not necessarily. Salt water is heavier and sinks. Local concentrations of salty water sink forming larger volumes of salty water.
Combine it with a gully and suddenly it can flow for a decent while without mixing.
Not a full explanation but it probably has to do with that but you're right in general it should mix.
There could also be vents near the bottom of the sea spewing out water. Supposedly there are large caverns below bedrock filled with water which are probably quite salty. Maybe add some vulcanic activity and suddenly salt water is forced up to bedrock level.

All just empty speculation. I took and failed a course on climate dynamics.

Anonymous at Tue, 12 Mar 2024 22:20:04 UTC No. 16070851

>>16070225
>turbidites
*turbidity current
Basically the same phenomena as a pyroclastic flow

Anonymous at Tue, 12 Mar 2024 22:21:05 UTC No. 16070854

>>16069951
Anyway that was a neat video, thanks for posting OP.

🗑️ Anonymous at Wed, 13 Mar 2024 06:52:41 UTC No. 16071541

>>16069951
It makes me think: ehat if the last glacial maximum (or some other period not old enough to get the effects erased) was far more severe than believed, with so much ice accumulating in the glaciers that much of the sea floor got exposed?

Anonymous at Wed, 13 Mar 2024 06:53:43 UTC No. 16071542

>>16069951
It makes me think: What if the last glacial maximum (or some other period not old enough to get the effects erased) was far more severe than believed, with so much ice accumulating in the glaciers that much of the sea floor got exposed?