LEARNING TARGET: I will work with my team to analyze the existance of ROGUE WAVES during today's class

WORDS O' THE DAY:

• frequency (waves/second or waves/minute
• period ("seconds/wave or minutes/wave")
• amplitude (wave height)
• wavelength (distance from crest to crest)
• crest (the highest point of the wave)
• trough (the lowest point of the wave)
• speed
• Rogue Waves

FORMULAE OBJECTUS:

wave speed = (frequency)(wavelength)

For example: (meters/wave) x (waves/sec) = meters/sec

 

WORK O' THE DAY:

The THREE BIGS are:

• BIG WIND
• BIG TIME
• BIG AREA

Recall that it is all about kinetic energy from moving air molecules into moving water molecules.

A KEY CONCEPT about waves in general and ocean waves in particular is that waves transfer energy.

That means ocean waves do NOT transfer water molecules from one part of the ocean. Rather, waves transfer energy across the ocean.

Air molecules pushed by the wind bash into water molecules. Those water molecules bash into the water molecule right next to them which bash into other water molecules and so on and so on!

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ROGUE WAVES

For many years, "Rogue" waves were considered something of a sea leg

end. Massive waves double or triple (or more!) the height of the surrounding ocean suddenly appearing to damage (or sink!) ships.

Scientists were skeptical since there was no real evidence to support those claims.

That has changed over the last 15 - 20 years as a substantial body of evidence has accumulated documenting the existing of Rogue Waves. (By the by, it may interest you to know that on average a massive container ship is lost *somewhere* on the oceans of the world about once a week -- and Rogue waves are thought to account for a significant number of those).

There is a remarkable book: "

"The Wave: In Pursuit of the Rogues, Freaks and Giants of the Ocean" by Susan Casey

The author notes that rather astounding fact (of all the sinkings) by posing the question (I'm paraphrasing): "Imagine a 747 crashing every week. Would people notice that?"

Let's take a gander at what the European Space Agency has to say HERE

We'll do one of my favorite class-reading strategies for that. I have paper copies if you like!

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We'll discuss the following *in depth* next time!

Please type the following into ChatGPT:

Describe how rogue wave form from the chaotic motion of ocean waves and include in-text citations and html links in end notes

Here's what I got back:

Rogue waves are extremely large and rare ocean waves that can reach heights of up to 30 meters and pose a significant threat to ships and offshore structures. These waves are believed to form from the chaotic interaction between smaller waves and can occur suddenly and unpredictably, making them a challenging phenomenon to study and understand.

According to a study by Onorato et al. (2013), rogue waves are a result of a nonlinear interaction between waves of different frequencies and amplitudes. This interaction can cause waves to either cancel each other out or amplify each other, leading to the formation of a rogue wave. The exact conditions necessary for a rogue wave to form are still not fully understood, but it is believed that the presence of strong currents and winds can increase the likelihood of their occurrence.

Recent research has also suggested that the occurrence of rogue waves may be linked to the phenomenon of wave turbulence, which is characterized by the chaotic motion of ocean waves. Wave turbulence occurs when waves of different frequencies interact with each other, leading to a state of disorder in the wave field. This disorder can create conditions that favor the formation of rogue waves, as the chaotic motion can cause waves to suddenly amplify and combine into a single large wave.

In conclusion, rogue waves form from the chaotic motion of ocean waves, which can lead to the nonlinear interaction between waves of different frequencies and amplitudes. While the exact conditions necessary for their occurrence are still not fully understood, recent research has suggested that their formation may be linked to the phenomenon of wave turbulence.

References:

Onorato, M., Osborne, A. R., Serio, M., & Bertone, S. (2013). Rogue waves and their generating mechanisms in different physical contexts. Physics Reports, 528(2), 47-89. doi:10.1016/j.physrep.2013.03.001

Nazarenko, S. (2016). Wave turbulence and rogue waves. Journal of Physics A: Mathematical and Theoretical, 49(12), 123001. doi:10.1088/1751-8113/49/12/123001

 

If you got something a bit too technical as well, please have the chatbeast revise in terms that an articulate high school student can understand

Now please work with your team to develop a few slides that explain rogue waves using scientifically appropriate terms.

You'll notice a massive amount of fake/photoshopped pictures during your research. BE VERY CAREFUL.

For more information on rogue waves, please visit:

• National Geographic
• Science Direct
• Science Daily

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Let's take a gander at THIS animation of a Rogue Wave off of Vancouver Island

Be prepared to share your work with the class next time.

See you tomorrow/Friday!