Friday, September 10

Highest Tide 2010

December last year I posted a photo article about sea levels and high tide down at Southsea. It wasn't the highest tide, but this year I managed to catch the highest tide.

I took this video near Southsea Castle and the aquarium:

video

You can see in the last clip of the video I had to stand on the wall to avoid getting wet. Later on whilst taking some photos at Old Portsmouth, I did get soaked by spray from a wave.
This is a nice photo showing just how high and rough it was on the day, I couldn't get to close to the fence because of the waves:


Two of the waves can be seen just reaching the top of the sea wall.
And here it is at low tide in the summer:



Why take these photos?
Well imagine adding 1 to 2 metres to that high tide, the path would have to be blocked from public use many times a year and the waves would be slopping over the higher sea walls.
1 to 2 metres is the sea level rise expected by the end of the century and into the first part of the next century.

Now instead add 6 metres - the amount sea levels would rise if the equivalent volume of ice as on  Greenland melted - then Portsmouth would be flooded in many areas.


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