low tide | high tide

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Uploaded by on Jun 8, 2009

This video depicts the low and high tide event that occurred on 30 May 2009 at Leo Carillo State Beach along the southern California coast. The parts of this video where the low tide scene changes to the high tide scene occur between 1:40 to 1:50 and 3:10 to 3:20.

Science has identified more than 400 factors which contribute to the phenomenon of oceanic tides; the greatest factor is the gravitational pull of the moon. Essentially, tides are the result of a great long-period wave travelling around Earth's oceans as Earth rotates. This wave moves along coastlines as it revolves around amphidromic points (nodes of no vertical wave motion) in oceans, bays, and gulfs. High tide is also known as "flood tide" whereas low tide is also called "ebb tide." Additionally, a tide coming in is said to be "rising" whereas a tide going out is said to be "falling."

Twice per month -- during the full and new moons, when the Earth, moon, and Sun are at syzygy (in line) -- the highest high tides and lowest low tides occur. Tides on these dates with the greatest tidal range are called "spring tides." (The name 'spring tides' has nothing to do with the season of the same name. Spring tides occur throughout the year whenever the conditions described are present.) When the moon is in quadrature (right angle to the Earth and Sun), tides with the least range occur. These tides are called "neap tides." Predictable variation of tides occur on a schedule of 18.6 years, which is the time it takes the moon to complete one cycle of its various motions.

To find the time of high and low tide for any coastal location in the United States, go to this webpage from the National Oceanic and Atmospheric Administration (NOAA):

http://co-ops.nos.noaa.gov/.

Once on this page ...

1. Click Tide Tables (listed along the left side of the page).

2. On the next page select the year for which you would like to find the tide prediction.

3. Then select the U.S. state where the section of coast in which you're interested is located.

4. On the next page, click on the name of the section of coast closest to, or containing the beach or location for which you would like to view the tide table. (This requires a bit of geographic knowledge. Try Google Earth or Google Maps if you're unsure about your location's situation.)

5. On the next page, you'll see a list of all of the tidal stations or tidal gage locations in your state of interest. Click the word 'Predictions' for the location closest to your place of interest.

To locate the time for low or high tides at Leo Carillo State Beach, I interpolate between the Santa Monica, Municipal Pier and the Mugu Lagoon (ocean pier) tide station data. Leo Carillo State Beach is located roughly between these two, but a little bit closer to Mugu Lagoon. So refer to data from both of these tide charts.

Tidal phenomena -- like everything in the natural world -- are fascinating. Study them!

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  • Thanks for the info.

    Can you also tell me how to figure out that the tide is Spring or Neap? Is there any formula available.

    Thanks

    Ali

  • @alisaeeddotcom Hi. There isn't any formula for figuring out Spring and Neap Tides. They occur on the day of or sometimes the day after the full or new moon.

    ____

    Find the tide chart for your location of interest on the NOAA website and look for the lowest (negative) value and the highest (positive) value for the water level. That's the Spring tide. Neap tides have the least difference between the high and low water levels.

    ___

    You can also find a chart for moon phases online.

  • Thank you very much for all the information about the video and how to go around on website for data about tides. I'm sure I'll enjoy low tide even more when I know all about it. I'm glad I found your video on youtube. Thanks again.

  • @betweenyouandsky Hello. You're welcome for all of the information. I make my videos to share the world with others.

    ___

    Do you live along the west coast? I think the west coast is more interesting than the east coast ... in some ways. It's mostly a rocky coast, whereas the east and Gulf coasts are mostly sandy barrier island beaches. (Except for Maine!) Rocky coasts have tide pools full of interesting critters.

    ___

    Anyway, enjoy your visits to the coast. And check out those tidal charts.

  • @betweenyouandsky Oh ... also ... I've modified the instructions in the video description on how to locate a tidal chart for a given place of interest.

    __

    Have fun and enjoy the Earth.

  • Where is this beach ? It's a beautiful area. I would go crazy from excitement when I see low tide like this ! Great video.

    Thanks !

  • @betweenyouandsky Hello. All of the information about this video can be found in the video description. Click the little arrow pointing down (v) to the LEFT of the number of views. It includes a link for a NOAA webpage & instructions on how to can find tide data for any stretch of coast in the U.S., including times for high & low tide.

    Any problems figuring out the webpage, send me a private message.

    Also, I have another hi/low tide video called "tidal creek | Goucester City, New Jersey".

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All Comments (18)

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  • how to downloiad this video hmmmm????

  • thanks this was helpful to me

  • Well, your guess is as good as mine what the thinkpinkliveblue meant by his/her comment. But s/he is a 16 year old Vietnamese from Hanoi. So I forgive her poor grammar.

    Realistically, though, thinkpinkliveblue said absolutely nothing with his/her comment. It's a completely non-sensical sentence.

    And yes, of course the moon is the greatest force creating the phenomenon of the tides. Read my self-written description at right for more information.

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