Posted on 01/19/2016 3:55:32 AM PST by Jan_Sobieski
It is based on the distance from a satellite, so all rises and falls are relative. So if the surface of the water drops away from the GPS the seafloor is dropping.
Make sense?
Amazing! Scares the Shiite out of me too!
It was your first post, asshole.
Then the journalist fails to express what happened clearly, which is idiotic journalism. The story refers repeatedly to the water getting shallower.
No, sorry. The story says, specifically and repeatedly, that the water was getting shallower.
Yes. It got four inches shallower.
If you are measuring the location from a stationary spot in space, would the bouy be closer to the satellite or farther from it?
Four inches shallower, which means four inches less depth of water. That’s what “shallower” means. Listen, if the satellite is measuring the location of the buoy relative to some elevation datum, that’s fine. Makes sense to do it that way. But the story is talking about the water column, which to me means depth of water. If the writer means something else, he or she should say so.
Your logic reminds me of a carpenter my dad worked with. A piece of wood was too long and he would mark an end. My Dad would say, why not cut this end its closer and we don’t need to turn the board. The guy would answer, but this is the end that’s too long.
Anyway...a story came out and debunked this story. So we are safe.
That makes no sense at all. Water shallower means less depth of water, i.e. a shorter distance between the surface and the bottom.. Either the surface was somehow depressed, or the bottom rose, not fell.
I understand that the buoy’s elevation is measured by satellite, and that if the bottom of the sea goes down, the surface also goes down, at least temporarily. But that is not what was written! The story said, more than once, that the water got shallower. “Water column”, not “elevation of buoy”.
Anyway, enough of this. I have things to do tonight, and work tomorrow.
"Laurel McCoy, a meterologist with the National Weather Service, said the agency looked at the data for the buoy mentioned in the story, which is located west of Astoria. The data showed "the natural fluctuation" of the ocean's tides, and is nothing out of the ordinary, she said.
"There's really nothing to worry about," McCoy said. "We're not seeing any sort of indication that anything is happening with Cascadia."
McCoy said the article had referenced a small clip of data about the water column, but a longer time span shows the how the water height increases and drops over time as expected.
------------------------------------
So, it seems this was just a case of someone panicking after reading only part of the data, and trying to use scare tactics to make money.
The Bay of Fundy is roughly the same latitude as Oregon, and though the currents interacting with a bit of land cam enhance a tidal surge, the increasing latitude farther from the equator has the greater effect on the min/max differential in most locations.
In the case of the Bay of Fundy, tides of 50 feet are not uncommon. http://bayoffundytourism.com/tides/
As to the tectonic plate shifting up or down quickly, how much noise energy would that produce? Probably in an area of the world with so many seismographs, it wouldn’t slip by without notice. A vertical plate movement produces a step change in sea level-— the wavelength of such a generated tsunami is 50 miles or more.
https://www.superstation95.com/index.php/world/779
The water column height gauge depicts a tide at its location in excess of two meters, about 7’2”. Notice there is no sustained step change, but the displacement is sinusoidal. While larger than most other movements visible on the graph when blown up to see detail, other similar excursions are present. Bupkis.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.