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#1
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"Maxprop" wrote in message nk.net... Actually they do have tides, albiet almost imperceptible. Near the equator the oceans have very little tide. So what? Bwahahahhahahahahahahahahhahahah! Lord but you are ignorant. What makes you think there is very little tide near the Equator? Simple physics proves how stupid your statement really is. The pull of gravity from the Moon and Sun raises the tides. The pull is the even greater at the Equator than at higher latitudes because the Earth surface at the Equator is closer to the Moon and Sun than the higher latitudes. Hence gravity is slightly stronger there, hence the tides are actually higher. Some sailor you are! Go stand in the corner. CN |
#2
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Capt. Neal® wrote:
"Maxprop" wrote in message nk.net... Actually they do have tides, albiet almost imperceptible. Near the equator the oceans have very little tide. So what? Bwahahahhahahahahahahahahhahahah! Lord but you are ignorant. What makes you think there is very little tide near the Equator? Simple physics proves how stupid your statement really is. The pull of gravity from the Moon and Sun raises the tides. The pull is the even greater at the Equator than at higher latitudes because the Earth surface at the Equator is closer to the Moon and Sun than the higher latitudes. Hence gravity is slightly stronger there, hence the tides are actually higher. Some sailor you are! Go stand in the corner. So, the moon stays over the equator in your universe? Interesting. For the rest of us, the Moon's orbit is inclined to the equator by 28 degrees so the moon travels "up and down" from the equator every month. When the Moon is a its highest declination, we have our largest tides in the mid-latitudes. Since the Moon is roughly over one of the tropics, this is called a "tropic tide." When the Moon is over the equator, we have smaller tides at mid-latitudes; these are called equatorial tides. (These affects have to be added into the Spring and Neap tides caused by the relative angle of the sun and moon to get an almost full picture.) The tides at the equator are also reduced by the fact that they actually lag the moon by 6 hours. This is caused by the fact that the "tidal wave" cannot move fast enough through the ocean to keep up. This s called "tidal lag" and the tides at low latitudes are called "indirect tides," while at high latitudes they are "direct tides." Actually, the tides at any location are likely dominated by local affects. |
#3
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Jeff Morris wrote: The tides at the equator are also reduced by the fact that they actually lag the moon by 6 hours. This is caused by the fact that the "tidal wave" cannot move fast enough through the ocean to keep up. Care to explain that? Cheers ------------ And now a word from our sponsor ---------------------- For a quality mail server, try SurgeMail, easy to install, fast, efficient and reliable. Run a million users on a standard PC running NT or Unix without running out of power, use the best! ---- See http://netwinsite.com/sponsor/sponsor_surgemail.htm ---- |
#4
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Nav wrote:
Jeff Morris wrote: The tides at the equator are also reduced by the fact that they actually lag the moon by 6 hours. This is caused by the fact that the "tidal wave" cannot move fast enough through the ocean to keep up. Care to explain that? One explanation I've seen is that the average depth of the ocean does not allow the wave to propagate fast enough at the Equator. http://www.marktovey.co.uk/tidesfull.html#Q16 I've also seen it described in term of the "natural resonance" of the ocean at the equator, which is 30 hours, while the Moon's rotation is a bit over 12 hours, but I'm sure this comes down to the same thing. What I haven't seen described in detail is exactly how much this affect reduces the tides. |
#5
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Jeff Morris wrote: Nav wrote: Jeff Morris wrote: The tides at the equator are also reduced by the fact that they actually lag the moon by 6 hours. This is caused by the fact that the "tidal wave" cannot move fast enough through the ocean to keep up. Care to explain that? One explanation I've seen is that the average depth of the ocean does not allow the wave to propagate fast enough at the Equator. http://www.marktovey.co.uk/tidesfull.html#Q16 I've also seen it described in term of the "natural resonance" of the ocean at the equator, which is 30 hours, while the Moon's rotation is a bit over 12 hours, but I'm sure this comes down to the same thing. What I haven't seen described in detail is exactly how much this affect reduces the tides. Exactly and it does -a lot I think (although I've not done/seen any maths on this). The wavelength of the tidal resosnance is 1/2 the earth. For a trochoidal wave this would imply a huge natural crest - peak depth. The oceans are simnply not deep enough to allow full development of such a wave (IMHO) of course. This impedes the propagation of the wave (as do the continents). Cheers |
#6
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From an elementary school science site:
http://www.astronomycafe.net/qadir/q2792.html "Capt. Neal®" wrote in message ... "Maxprop" wrote in message nk.net... Actually they do have tides, albiet almost imperceptible. Near the equator the oceans have very little tide. So what? Bwahahahhahahahahahahahahhahahah! Lord but you are ignorant. What makes you think there is very little tide near the Equator? Simple physics proves how stupid your statement really is. The pull of gravity from the Moon and Sun raises the tides. The pull is the even greater at the Equator than at higher latitudes because the Earth surface at the Equator is closer to the Moon and Sun than the higher latitudes. Hence gravity is slightly stronger there, hence the tides are actually higher. Some sailor you are! Go stand in the corner. CN |
#7
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Overly simplified. As I said the Sun also creates tides.
CN "katysails" wrote in message ... From an elementary school science site: http://www.astronomycafe.net/qadir/q2792.html "Capt. Neal®" wrote in message ... "Maxprop" wrote in message nk.net... Actually they do have tides, albiet almost imperceptible. Near the equator the oceans have very little tide. So what? Bwahahahhahahahahahahahahhahahah! Lord but you are ignorant. What makes you think there is very little tide near the Equator? Simple physics proves how stupid your statement really is. The pull of gravity from the Moon and Sun raises the tides. The pull is the even greater at the Equator than at higher latitudes because the Earth surface at the Equator is closer to the Moon and Sun than the higher latitudes. Hence gravity is slightly stronger there, hence the tides are actually higher. Some sailor you are! Go stand in the corner. CN |
#8
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"Capt. Neal®" wrote in message Overly simplified. As I said the Sun also creates tides. Just keep digging that hole, Cappy. Pretty soon you'll be able to get that damned Coronado in there with you. Max |
#9
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"Capt. Neal®" wrote in message ... "Maxprop" wrote in message Actually they do have tides, albiet almost imperceptible. Near the equator the oceans have very little tide. So what? Bwahahahhahahahahahahahahhahahah! Lord but you are ignorant. What makes you think there is very little tide near the Equator? Simple physics proves how stupid your statement really is. The pull of gravity from the Moon and Sun raises the tides. The pull is the even greater at the Equator than at higher latitudes because the Earth surface at the Equator is closer to the Moon and Sun than the higher latitudes. Hence gravity is slightly stronger there, hence the tides are actually higher. Some sailor you are! Go stand in the corner. This is such an ignorant post, I'm not going to respond to it. At least not beyond pointing out how completely ignorant it is. Might do some reading, sock puppet. You really don't have a clue. Max |
#10
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"Maxprop" wrote in message link.net... "Capt. Neal®" wrote in message ... Some sailor you are! Go stand in the corner. This is such an ignorant post, I'm not going to respond to it. That's the dumbest thing that I've ever read! Regards Donal -- |
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