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Ambassador report

Ambassador report

[Ambassador report] [Thermic Report] swell

by Aida Daeichiyan karandi | 20-06-2020 22:57 Comments 5 Comments recommendations 0 recommendations

There are two types of wind waves at the ocean surface: wind sea and swell.  Wind sea as the first kind is waves being generated under the influence of the local wind. As these waves propagate away from their generation area  they  are  called  swell.  Swell waves can propagate thousands of kilometers across entire ocean basins with energy  e-folding scales  exceeding  20,000  km. the  significant  wave height  (SWH)  and  the  mean  wave  period  (MWP) are the most common parameters used to  characterize  an  ocean  wave  field. while these  parameters  give a limited view of the wave  field.  They  are  calculated  by  integrating  the wave  spectra,  and  two  wave  fields  with  the  same SWH  and  MWP  may  still  be  different.  A  more  detailed investigation and  qualitative analysis is  needed  to  correctly  define  a  wave  field  characteristics. The  way  to  pursuit  this  analysis  is  by  studying  the wind sea and swell parameters separately.[1]
Swells are collections of waves produced by storm winds raging hundreds of miles out to sea, rather than the product of local winds along beaches. They are formed by a combination of factors and are coveted by surfers looking to catch a big wave. [2]
A swell in the ocean is formed through a combination of wind strength, wind duration, and fetch. Wind strength is how fast the wind blows across the surface of the ocean. Wind duration is how long it blows without interruption. And fetch is the distance wind blows across the surface without disruption from obstacles. As the wind blows across the water’s surface friction occurs and energy is transferred from wind to water. The result is a rising crest that forms into a wave. Over time and distance, sustained wind strength and duration build up a large amount of energy beneath the ocean’s surface, forming deeper waves known as swells. This energy fuels a swell so it can travel thousands of miles without changes in height or shape.[2]
we should be care of these swells during sea traveling.


Kushal Naharki

  • Kushal Naharki says :
    Hello Aida

    Greetings and Namaste from Nepal
    Wishing you a safe stay
    Thank you for your report on swell

    Keep writing great reports.
    We are eager to read more reports from you.
    Green Cheers :)

    Best wishes,
    Kushal Naharki

    Posted 14-07-2020 10:20

Sang Su Mentor

  • Sang Su Mentor says :
    Hi Aida Daeichiyan karandi, this is a mentor, Sang Su Lee.

    Thank you for introducing some types of sea waves that are caused by geographical and climate factors. As you've mentioned, since wave contains energy, it would be beneficial that people are using this energy to produce electrical energy. Nature is like a gift when people are using it in eco-friendly way.

    Thank you for your report!
    Posted 01-07-2020 02:43

Taehyun Mentor

  • Taehyun Mentor says :
    Hello Aida Daeichiyan karandi this is mentor Taehyun!

    Swell is a wave with a lot of energy. We often think that only huge waves and tidal waves on the beach have a lot of energy, but they're said to have a lot of energy and radio waves because they're low in the ocean, and they're invisible. I really enjoyed reading this article full of that! I found it interesting to read this article that even weather-monitoring instruments can hardly predict well!

    Thank you for the report!

    Green cheers!
    Posted 01-07-2020 02:30

Aarati Khatri

  • Aarati Khatri says :
    Hello Aida,
    Thank you for scientifically presenting your view on wind waves and ocean surface.
    Keep on sharing.
    Best Regards.
    Posted 28-06-2020 15:53


  • ALOK DHAKAL says :
    Thank your for your report!!
    Posted 21-06-2020 18:14

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