Full Moon Tide: August 28 2015

The tide under a full moon, August 28 2015.

via GIPHY

My original intention here was to capture the tide at its main intervals, to create a place-based schematic of the intertidal for a field guide I was working on. So I divided up my day and the tide into four intervals, defining the lower lowtide line, the upper lowtide line, the midtide line, and upper tide line.

With these photos I was able to create a schematic of the cove, divided into the lowtide, midtide and hightide zones. I chose a good day for it! The tide ranged from 0.6 m to 3.1 m (2.5m).

It was fun scheduling my field work around the tide, playing in tide pools and going for hikes, then hurrying back to be sure I was there at the right time to snap the photo.

On Galiano there is a semi-diurnal tidal cycle with two high tides and two low tides occurring every ~25 hours. Those who know tides will know that the greatest volume of water (1/2 the total tidal flux) comes in during the middle 1/3 interval, according to the Rule of Twelfths. The pattern is perfectly evident in this time-lapse series.

Publicado por chlorophilia chlorophilia, 19 de febrero de 2016

Comentarios

super cool. great use of the time lapse! how many ft does the tide rise and drop in this spot?

Publicado por kriskrug hace más de 6 años (Marca)

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