71–80 of 90 posts
Could this be used for electromagnetic (and other) waves as well? I suppose the principles are similar for a medium in which oscillations move into some direction(s) etc.
The electromagnetic equations are linear, whereas the fluid dynamic ones are non-linear. This difference is crucial for this phenomenon.
This is a commercially available product for wave prediction on ships: https://nextocean.nl/wavepredictor.php Not specifically meant for rogue waves though, but rather to predict calm streaks in the waves affecting the ships motion. This is useful, e.g. when landing a helicopter or transferring cargo or persons to another ship while at sea. I can confirm that there is a lot of interesting math involved and, as noted…
There are also open source tide and wave models, which is what researchers use and are fairly accurate. Not sure how much this commercial product differs, but I know the Navy etc. use the open source ones with in house adjustments.
> one moment, just downloading this project off github
> just downloading few gigs of dependencies
“Cannot use import statement outside module”
Earlier quoted context omitted.
I wonder to what extent all the mathematical modeling can be replaced by modern run-of-the-mill data science techniques.
Other than the computational cost, why would you want to use stats when you have an analytic model right there?
The "traditional view" is basically a linear model view.
The new understand involves nonlinear models.
If you've ever double bounced someone on a trampoline it's the same effect. Constructive interference is awesome.
The causes of rogue waves are not understood.
Earlier quoted context omitted.
I wonder to what extent all the mathematical modeling can be replaced by modern run-of-the-mill data science techniques.
My guess would be: not that much. But I work in the field of numerical mathematics and computational physics, so I could have some bias. :-D The more nuanced answer would be that taking the raw radar data as input to e.g. a neural network and train that to output the predicted timeseries of future ship motion is not feasible. It would take a giant network and too much compute to train for very unreliable results. Thi…
Surfers are very familiar with how two waves that come in different angles combine into a very high wave at the intersection. I really don't understand why monster waves seem so mysterious to scientists. I'm certain they happen all the time but no one is there to observe them except for the occasional unlucky sailor. https://en.wikipedia.org/wiki/The_Wedge_(surfing)
Because what you're describing isn't a "rogue wave," it's just a slightly bigger wave. I'm not a surfer and am just a person who's been swimming in the sea a handful of times and I've seen this phenomenom. The rogue waves being described are incredibly rare to the point that sailors who have sailed 5000 hours have never encountered one and are sometimes talked about as though they are mythical. When rogue waves were…
Surfers are very familiar with how two waves that come in different angles combine into a very high wave at the intersection. I really don't understand why monster waves seem so mysterious to scientists. I'm certain they happen all the time but no one is there to observe them except for the occasional unlucky sailor. https://en.wikipedia.org/wiki/The_Wedge_(surfing)
I mean, there was just an article about how scientists discovered that worms travel after a rain, which is something I figured out when I was ten. Science has a lot of blind spots. Surfers and children aren’t high on the list of people to consult or observe. Nor for a long time was folk medicine.