© copyright notice ||| français ||| italiano
prologue > prologue on tides > index tides
========================================================
back to 2.3 page 1 / Itinerary 2.3, page 2.
-- 2.3.#8 ---
The tide is a moving result.
Whether the tide is rising or falling is always only a moving result, between the volume of molecules in the cumulative phase and those in the dissipative phase.
This is true, but I hadn't yet fully understood to what extent this is true.
It was time to go see what really happens.
I understood this after I decided to go see how the tidal phenomenon develops, and after managing to document with videos the phenomena, which I later called "water figures" and "density waves."
It is when, under certain conditions, quantities of water molecules alternate between the cumulative and dissipative phases, every one or two seconds.
You too, reader, after watching the recordings, will understand in what sense the level of a tide is a moving result, between the cumulative and dissipative phases.
-- 2.3.#9 ---
A special lagoon.
To understand how the tides work, I chose the Lusenzo Lagoon, south of the Unione Island, located between Chioggia and Sottomarina, not far from Venice.
I chose this observation point because it's the most convenient to get to from my house, but also quiet, with limited boat traffic, and has disabled parking.
Fortunately, it's also a special place for my purpose: a kind of astronomical observatory for studying the formation of the tides.
-- 2.3.#10 ---
Lusenzo observatory.
It is one of the places where the water is frequently still, at every change of tide, and where much of this tidal research has been conducted.
It is one of the places where the effects of the movements of the Moon and the Sun on the tide can best be observed. In a certain sense, it is an astronomical observatory.
In my interpretation.
When the water from the Lusenzo lagoon is about to flow to the sea, it seems uncertain which canal to pass throughthe one east of the island connecting Chioggia to Sottomarina, or the one west of itand remains stagnant.
Even after slowly decreasing in level, it remains stagnant for a long time, in the sector far from the two canals leading to the sea.
"Water Figures" and "Density Waves.".
Thanks to this, I was able to observe two phenomena, new to me, which I have named "water figures" and "density waves."
These phenomena occur most frequently to the south of the island, preferably away from the two channels. They can occur both during rising and falling tides. But here I will only consider the latter.
--- 2.3.#11 ---
Figure d'acqua e Onde di densità.
I conclude this page with examples of "water figures" and "density waves." I will then continue, on a third page of the same itinerary, with more text and more examples.
During my research, I was able to record the photographs below, what I call "water figures," actual protuberances of water, evidence of an ongoing density change, arranged in more or less orderly grids. I now present them on several pages, if possible along with the circumstances in which the recordings took place.
Waves of density.
This film will also be included in Itinerary 5, on a page dedicated to other films, all shot on the same day.
-- 2.3.#12 ---
Alternating volumes of water.
Ultimately, the tide level is a moving average between the volume of water molecules in the cumulative phase and the volume of those in the dissipative phase.
I reached these possible conclusions after recording on video - in special locations, with still but not stagnant water, simultaneously with the Moon's critical angular velocities - the two phenomena I call water figures and density waves.
I interpreted these phenomena as the alternation of large volumes of water between the cumulative and dissipative phases every one or two seconds.
This alternation can show you a 10-15 percent difference in the volumes that the water assumes during high tide and those it assumes during low tide. At least in the place of observations.
Example 2011-03-18.
The phenomenon occurred on March 18, 2011, at 10:59 a.m., at point c of the calendar, at the critical angular velocity of 139.4 deltini/hr.
At that date and time, the phenomenon I call "water figures" (when the shapes tend toward squares) occurred. In other circumstances, "density waves" appear instead (when the shapes tend toward rectangles or stripes).