whats up with the tides?
79230
Global warming.  It is killing all the frogs too!\n\nIf the frogs get eliminated...what's next!
730462
It's due to gravity. \nThe Moon Tide\nThe earth and the moon are two great masses that have a significant gravitational pull on each other. This is what keeps the moon in orbit around the earth, and it is also what causes tides to occur in the ocean. Picture the earth with a uniform level of water all around it.  The moon’s gravity pulls on the earth, and pulls the water towards it. The water moves up into a slight bulge on the side of the earth that faces the moon. At the same time, there is a force pulling water out in the opposite direction of the moon.\n\nCheck this link.\n\n\nIt will answer all your questions.\n http://oceanlink.island.net/oinfo/tides/tides.html
5297
BLowout tides occur in areas (generally nearshore shallows, marshes and tributaries) where the shore is very flat so the water remains shallow for some distance from the low tide mark. If you get a strong offshore wind at the same time as you have a low tide, then the wind will push the water out to sea so that you have what seems to be an extra-low tide, or a "Blowout" tide (because the wind blows out the water.)\n\nHere are some good photos of a blowout tide:\nhttp://www.fossilguy.com/trips/mrylnd_dec2005/mrylnd_dec2005.htm
919962
without a doubt, tide. Gain ispretty good but  sun sucks.
119440
Spring tides happen when the moon is both new and full, so no the moon is not always full when a tide is spring.  In fact larger spring tides usually happen when the moon is new.
312177
I believe that in most places, the difference in daily tide levels is greater than the difference between spring and neap tides.  Since the Sun's position relative to the earth changes in a daily cycle, and the Moon's position changes in a monthly cycle, that suggests to me that the Sun has a greater effect on tides.
176722
Tides vary in strength depending on whether the sun and moon are working together or against each other.  Also the shape of the coast that the tide washes against can magnify it (like a converging bay) or dimminish it (like a diverging promontory jutting into the sea).  Therefore, the location is key.  For substantial power generation, a massive structure may be required which is a huge investment.  The project may be opposed for esthetic reasons (some like big tides?) and economic reasons (access for ships and pleasure boats may be affected?).  Such structures can change the natural movement of sand and beaches, especially during and follopowing huge storms.  But one big problem remains, that you can not harness the tides without influencing and changing them.  The wrong structure could dimminish the very tide that you wish to harness.  Therefore, the tides can be harnessed (some have been) but not without many problems to overcome.  Computer models can help only with the technical problems to avoid abandoned investments.
531052
Guessing......red tides in the ocean are caused by an algae when conditions are right (low oxygen i believe) It may be the same in a waste water stabilisation pond, they might use a similar algae to help break down the waste materials.
194804
I'm not sure if the sea level rise is that dramatic. There are a lot of different predictions being bandied about. The estimate from the telegraph is that there will be a 20ft rise by 2600. The rise this century is expected to be about 1m.
199887
http://www.saltwatertides.com/pickpred.html\n\nThis site seems to have quite a few sites that you can pick to get the correct tidal information. Good luck!
176407
The tides are mainly influenced by the psition of the sun and moon relative to the earth and their gravitational pull, however the tides are also affected by the flow of water around geographical features it is such a complex system that tides are predicted by past measurement rather than a predicting formulae.
744204
Tide refers to the water level present in the ocean. It increases depending upon the season such as winter, summer and tropical. These tides levels are categorically watched by meterological dept inorder to protect the seashore areas in lieu of natural calmities such as tsunammi, typhoons etc.\n\nIn terms of shipping, tides are always watched by the captain inorder to move the ship safely saling to avoid grounding in mud.
485410
There would still be some tides, but they would be much, much more calm, as the sun only has about 10% (if not less) of the effect on the waters that the moon does.  Other than that, probably not too much.  No more moonlight.
383007
Yes, the first part is true.  Why does that make tides more "believable"?  \n Any two gravitaionally-bound objects will orbit around a common center of gravity.  (which is closer to the more massive object).
43764
Tides happen in the atmosphere, and even in the ground itself. We can easily measure them with instruments. The solid earth tide is actually quite substantial, but it is still small enough and slow enough that we do not notice it usually. \n\nThere are definitely tides in lakes and in rivers too. Why would there not be ? \n\nIt should be noted that the tides are NOT because the water is attracted to the sun and moon. Tides are because the gravity field from extraterrestrial bodies (including other planets, not just the sun and the moon) is not constant. On one side of the earth, the force on the water is greater than it is on the earth, so the water gets pulled away from the earth. On the other side of the earth, the force on the water is less than it is on the earth, so the water gets left behind in a pile as the earth gets pulled away from the water. \n\nThis is why there are usually 2 tides per day, although it should also be noted that due to resonance effects, there are places with no tides, places with 1 tide per day, and places with more than 2 tides per day.
344029
The moon's got gravity too, and like the Earth pulls the moon, the moon pulls on the Earth's waters. Depending on where the moon is, you get different tides. Kinda like if you move a magnet in a circle around a paperclip. The paperclip will move in different directions depending on where the magnet is.
108268
Like most of the Aegean sea, there is virtualy no tides or currents. High & low tide is a difference of about half a metre. (19 or 20 inches) As for currents, a couple of knots at most in narrow channels.