Any oceanographers here? Is the Pacific ocean rising?

[wasupaloopa]

I have been going to the same beach on the Central Coast of CA for years. I know many of the fixed rocks in the surf.

Today low tide was 2ft. Many of the rocks were exposed that were exposed last year when low tide was -1ft.

That is a three ft difference. Does sea level change?

[defacto7]

1. I'm no oceanographer

but I do know the ocean doesn't rise equally at all points. It depends on the density/gravity of the earth at any given point and also the sub-ocean terrain. The ocean isn't uniform in height at the surface. Some places would flood when others don't. After enough water accumulates there would be a general increase. It also depends on the moon's distance, that changes.

[4139]

2. Tides vary, they are not the same week after week, month after month

This article talks about “King” or peak extreme high tides, there are also extreme low tides
https://www.google.com/amp/amp.sanluisobispo.com/news/weather/weather-watch/article187741728.html

[wasupaloopa]

3. Thanks

[jberryhill]

5. This is an island only a couple of times a year

On tide charts for places where it matters, you’ll often see an additional number giving an index figure for how high or low a tide will be.

Most of the time, it’s a mudflat of varying proration. Occasionally people get caught out there.

[roamer65]

4. Also depends on the orbital position of the Moon.