Swell period question

Discussion in 'Mid Atlantic' started by Waverider82, Aug 25, 2010.

  1. Waverider82

    Waverider82 Well-Known Member

    256
    Mar 26, 2010
    Do Longer wave periods always mean more time in between sets? That's what I've been told from numerous people.

    Well how come during long period hurricane swells, in my limited experience, the waves are relentless with tremendous consistency and hardly ever a real lull for long? Seems that the frontal short period systems are more gusty and have more time in between sets?

    Is it just my imagination because the waves are so much bigger it seems like less time in between waves?
     
  2. bauer

    bauer Well-Known Member

    182
    Aug 22, 2010
    getting worked

    Its because your getting worked so hard white water is so much more powerful once your our you'll realize the time between sets
     

  3. Waverider82

    Waverider82 Well-Known Member

    256
    Mar 26, 2010
    Yeah I think you hit the nail on the head.
     
  4. schweez

    schweez Well-Known Member

    119
    Sep 17, 2008
    i like the sarcasm bc i dont know what hes saying. ::crossesfingers::
     
  5. Waverider82

    Waverider82 Well-Known Member

    256
    Mar 26, 2010
    What? I wasn't being sarcastic.
     
  6. rodndtube

    rodndtube Well-Known Member

    819
    May 21, 2006
    Did you read/watch any of the tutorials yet? Suggest a search of the Internet for some basic information on the issue -- in the long run you will appreciate it and can then apply your knowledge to other spots and not just your local shoreline.

    Better yet, buy or borrow from your library the classic on the subject:
    Bascom, Willard. Waves and Beaches: The Dynamics of the Ocean Surface. Garden City, N.Y.: Anchor Press, 1980.
     
  7. burdturd

    burdturd Well-Known Member

    71
    Aug 18, 2009
    Whats up with all you retards? Someone asks a question, either answer it or don't answer it. This is the reason why these forums are practically dead.
     
  8. LVl<E

    LVl<E Well-Known Member

    106
    Jan 6, 2009
    a long period swell does not mean more time between "sets". It simply means that the period being 10 secs is the time usually between each wave. The longer periods as you will see give the wave more time to build in size, speed and power which leads to better waves. A 1 foot swell @ a 10 sec period will always be better than a 10 foot swell @ a 5 sec period. youll learn with experience. just pay attention.
     
  9. rodndtube

    rodndtube Well-Known Member

    819
    May 21, 2006
    I provided some answers... they will require a little bit of work and the harvest will yield great fruits. Basically, reading a book such as the one by Bascom, or some of the "tutorials" available on various wave forecasting and other surf-related sites will provide a broad spectrum of information that more authoritative and succinct than several opinions on a forum that may or may not be accurate. Good answers and relevant knowledge on the topic of hurricane swells will also take a few pages... forums don't handle that much information very well.

    BTW, practice what you a preaching in your reply, burdturd! Stay on-topic :)
     
  10. dave

    dave Well-Known Member

    448
    Dec 11, 2008
    the period refers to each wave, not a set and it means thats how long it takes from the time it starts to form to the time it breaks, so its better formed and has more power
     
  11. njsurfer42

    njsurfer42 Well-Known Member

    Nov 9, 2009
    he did answer the question, turdmo. bascom's book is one of, if not the, best book on the subject ever written. & it was written over 40 years ago. you clearly haven't read it or you wouldn't have said what you did.
    "the act of self discovery provides the sauce for the meat of knowledge."

    at any rate, the time between sets is generally more a function of the distance a swell travels to get to where you are b/c the distance allows the swell to organize itself into coherent packages, or "sets". faster moving waves move to the front of the wave train & slower moving waves fall to the back. given that hurricane swells are traveling a max. of about 500 miles, they don't have a lot of time to separate into distinct groups, hence the shorter time between sets. the waves that hit the north shore of hawaii every winter traverse thousands of miles of open ocean, giving them much more time in between sets, upwards of 30min. at times.
     
  12. Swellinfo

    Swellinfo Administrator

    May 19, 2006
    Hi,

    I will get to updating with more tutorials sometime, when I find the time.

    As for your question, it is actually a really good one, because a lot of people are a bit confused about this... When we receive a long period swell, this doesn't implicitly mean there will be a longer interval between "sets", but yet there generally is. BUT, that doesn't always mean it will be an easier paddle.

    Ya, I know that wasn't helpful whats so ever, so I'll try to explain more, all though its harder without pictures.

    The wave period is the time it takes for one wavelength (from one wave trough to the next) to pass a certain point in space. So, of course, a 15 second period will actually give you more time in between individual waves. And, since the source of the longer period swells are further away in the ocean, this spreads out the "set waves", so that in fact the bigger set waves are spread out further.

    This, however, really doesn't imply that it will be an easier paddle. Because, for one, the longer period waves have more energy. So, if your sitting in impact zone getting worked, your might need a lot more paddle energy. And, also, when it comes to the randomness of the ocean waves at the shoreline, it doesn't always come in nice and organized like in the opean ocean. When the waves start to feel the ocean bottom, the waves are getting refracted, defracted, absorbed, deflected, blah blah blah... so there is much more randomness around the surf zone.

    And one more thought, is that if you have bigger waves, then even the smaller waves during that day will be a bit harder to paddle through....

    Having said all that, which prob didn't help at all, if you are surfing reef breaks with nice clearly consistent peaks and channels, then there will be much less randomness than at your average east coast beach break. Surfing a beach break on a long period ground swell, can be a hell of a paddle.
     
  13. Groundswell

    Groundswell Active Member

    39
    Aug 24, 2010
    Not always. As long period energy begins to "feel" the ocean bottom, refraction occurs causing the wave to slow down. This gives the waves behind it a chance to catch up forming a wave train. These trains create that relentless onslaught of waves you experience when paddling out. This is why you need to time your paddleouts and/or find your rips. Waves that propagate from their wind field will have a longer period than those created within the windfield (i.e. 4 ft @ 10 seconds vs 4 ft @ 4 seconds).
     
  14. bananadogpizza

    bananadogpizza Well-Known Member

    73
    Jun 23, 2010
    period is the thing that happens usually around once a month to many of the people who post on this forum that causes them to bicker and send whiny posts back and forth. dont see how that affects your paddle out unless you spend a lot of time reading those posts on this forum and get super bummed that you lose your surf vibe
     
  15. rodndtube

    rodndtube Well-Known Member

    819
    May 21, 2006
    Not me. I am over it already.

    It is called PMS.
     
  16. bb.rider

    bb.rider Well-Known Member

    60
    Apr 20, 2008
    seriously? have you ever ridden a groundswell?

    the longer the period, the longer time between sets: fact

    generaly the longer the period, the slower a wave actually breaks (depending where you are): fact

    as for 1 ft @ 10sec being better than 10 ft @ 5 sec...........CRAZY TALK...!!!!
     
  17. Waverider82

    Waverider82 Well-Known Member

    256
    Mar 26, 2010
    Yeah 1 foot at 10 seconds if flat as a lake.
     
  18. MDSurfer

    MDSurfer Well-Known Member

    Dec 30, 2006
    10ft @ 1 sec= Sponger heaven.
     
  19. Mitchell

    Mitchell Well-Known Member

    Jan 5, 2009
    I agree..Longer period swells have travelled a much longer distance and have had a chance to group into "sets" with longer gaps in between the sets. Anyone who surfed 16-20 sec. swell in the pacific knows it. You wait, and wait,...then comes the 8 wave set...then you wait, and wait. Paddling out in between sets is pretty easy. But your never really sure if you paddled out far enough until that first set arrives.
     
  20. Groundswell

    Groundswell Active Member

    39
    Aug 24, 2010
    Wave energy from a tropical storm along the East Coast is not just (for example) a wave or set of waves that are all 7 feet @ 14 seconds. A tropical system such as Danielle pulses producing different wave sizes and periods. Mother nature is never that cut & dry but lord knows Sean Collins has down an excellent job figuring it out. The buoys will report the primary data, & if you look, secondary data. This is why on a rockin swell the inside is breaking, the outside is breaking, & then you have your cleanup sets!!!!!!