29 Apr to 6 May 2012 @ 09:58

[Weatherlawyer]

Saturn has been retrograde since February. All the others are now in
direct orbit.
I have no idea what impacts retrograde motion has on the earth. Just
thought I'd try folowing the idea for a while.

Nothing goes retrograde until the middle of May.

Meanwhile on planet earth, the time of this phase is: 09:58 and that
means it will be similar weather to any lunar spells at 10 and 4
o'clock.

And there just happens to be some boat anchor type fronts in the North
Atlantic. These indicate volcanic activity. An anticyclone moves over
Iceland which is an unusual phenomena.

Most of the stuff in the Antarctic after today looks to be non seismic.

[Felix Tilley]

This stuff really belongs in sci.geo.geology. They are used to your stuff.


Felix

[Weatherlawyer]

Posting early for post-Christmas aren't you?

[Weatherlawyer]

> > >  So far, there is nothing on the list since:
> > > 2012/04/27 at 10:29
> > > 5.1 M. SULAWESI, INDONESIA
> > > And we are at the end of this spell. It should be replaced by a
> > > vulcanic one on the 29th April: 09:58.
>
> > > There is an odd sweep up the western coast of the North Atlantic chart
> > > by way of phreatic behaviour. It goes straight into the Arctic by way
> > > of Iceland, taking with it a small anticyclone. I have to confess I
> > > can't make head or tail of that chart this coming week.
>
> > > Around Antarctica:
>
> > > The system between 80 and 100 east flat-lines  all throug the weekend.
> > > Then it gets worse and spikes into the continent at 160 east Monday
> > > night'#Tuesday morning.
> > > What that means to the habitable parts of the planet, it will be
> > > interesting. Probably tornadic stuff.
>
> > > Meanwhile, west of the Peninsula/ South America a confluence of 4
> > > separate Lows seem to bleed away to nothing only to be rplaced by a
> > > situation that develops from the central Pacific later tonight (28
> > > April 2012) becoming dangerous by Sunday morning and dissipating after
> > > midnight.
>
> > > It leaves a Low so large that the Anticyclone is displaced over South
> > > America and enters the Atlantic, sending a ridge as far as the
> > > continent between 40 and 20 west. No idea what will happen with that
> > > ether but it is as unusual as I have seen down there.
>
> > > It builds almost immediately as it clears the South American landmass.
>
> > > So, we are in for an interesting weekend.
>
> > 2012/04/28 @ 10:08
> > 6.7 M. TONGA.
>
> Looks like the last one.

Be it dry or wet, the weather always pays its debt.
And who an explain how seismicity does the same?

> The North Atlantic seems to be set up for
> doubles and triples if not eruptions of volcanoes. And erupting
> volcanoes.
>
> Similarly after the dark mass clears this afternoon, the
> Antarctic looks to be setting up for many duplicate and triplicate
> earthquakes.

2012/04/29
5.8 M. @ 15:02. 39.7 N. 142.0 E. NEAR THE EAST COAST OF HONSHU, JAPAN
5.8 M. @ 10:28. 35.6 N. 140.5 E. NEAR THE EAST COAST OF HONSHU, JAPAN

A matching set on the 5M and over list?
No.
They are about 4 1/2 degrees apart. It is on the full list that things
get interesting:

4.5 22:00:06 52.387 -171.833 FOX ISLANDS, ALEUTIAN ISLANDS,
ALASKA
4.5 17:28:47 40.069 143.499 OFF THE EAST COAST OF HONSHU,
JAPAN
4.6 16:29:56 83.978 0.227 NORTH OF SVALBARD
4.9 15:45:09 25.518 142.611 VOLCANO ISLANDS, JAPAN REGION
5.8 15:02:18 39.729 142.074 NEAR THE EAST COAST OF HONSHU,
JAPAN
4.6 12:46:53 -23.558 -177.599 SOUTH OF THE FIJI ISLANDS
4.6 12:16:55 36.897 141.030 NEAR THE EAST COAST OF HONSHU,
JAPAN
4.5 11:58:40 28.792 57.352 SOUTHERN IRAN
4.6 11:29:53 83.952 -0.511 NORTH OF SVALBARD
5.8 10:28:52 35.601 140.483 NEAR THE EAST COAST OF HONSHU,
JAPAN
4.5 09:01:45 -24.603 -175.359 SOUTH OF TONGA
5.4 08:09:06 2.709 94.556 OFF THE WEST COAST OF NORTHERN
SUMATRA
4.5 07:17:08 16.528 -98.340 GUERRERO, MEXICO
4.8 06:52:02 -36.169 -98.522 SOUTHEAST OF EASTER ISLAND
4.1 06:22:25 -20.311 -69.358 TARAPACA, CHILE
4.4 04:39:37 15.125 -94.850 OFF THE COAST OF OAXACA, MEXICO
4.7 03:52:27 1.919 92.404 OFF THE WEST COAST OF NORTHERN
SUMATRA
4.9 03:00:44 1.949 93.804 OFF THE WEST COAST OF NORTHERN
SUMATRA
4.6 02:13:56 2.218 89.778 NORTH INDIAN OCEAN
4.5 02:11:17 -3.041 136.042 PAPUA, INDONESIA
5.2 01:57:52 -3.052 136.124 PAPUA, INDONESIA
4.4 01:55:09 17.000 -85.258 NORTH OF HONDURAS
4.7 00:43:25 -2.263 -79.531 NEAR THE COAST OF ECUADOR

(For a subjective understanding of the term "interesting".)

> The next spell is:
> 29 Apr to 6 May 2012 @ 09:58  Which is volcanic in nature.

[Weatherlawyer]

On Apr 29, 11:38 pm, Weatherlawyer <weatherlaw...@gmail.com> wrote:
>
> > I have no idea what impacts retrograde motion has on the earth. Just

> > thought I'd try following the idea for a while.

>
> > Nothing goes retrograde until the middle of May.
>

> > And there just happens to be some boat anchor type fronts in the North
> > Atlantic. These indicate volcanic activity. An anticyclone moves over
> > Iceland which is an unusual phenomena.

I missed this:

> http://makeagif.com/i/AsZNiJ

[data...@yahoo.com]

we predict mechanical or electrical failures from bad grounding.
I missed the fortuna quake by 64 miles thru a very casual prediciton.

[data...@yahoo.com]

he's in the groove, almost columnar.

[Brian]

Weatherlawyer <weathe...@gmail.com> wrote:
> Saturn has been retrograde since February. All the others are now in
> direct orbit.
> I have no idea what impacts retrograde motion has on the earth. Just
> thought I'd try folowing the idea for a while.
>
> Nothing goes retrograde until the middle of May.
>

>.

Mars is very close to earth at the moment. Does that have any effect on
earth.

--
Regards Brian

[Weatherlawyer]

On Apr 30, 7:52 am, Brian <bcl...@es.co.nz> wrote:
>
> Mars is very close to earth at the moment. Does that have any effect on
> earth.

Freighters for the lizards you mean?

[Brian]

I don't understand.

--
Regards Brian

[Jack Campin]

>>> Mars is very close to earth at the moment.
>>> Does that have any effect on earth.
>> Freighters for the lizards you mean?
> I don't understand.

He is alluding to http://www.davidicke.com/

-----------------------------------------------------------------------------
e m a i l : j a c k @ c a m p i n . m e . u k
Jack Campin, 11 Third Street, Newtongrange, Midlothian EH22 4PU, Scotland
mobile 07800 739 557 <http://www.campin.me.uk> Twitter: JackCampin

[Weatherlawyer]

On Apr 30, 2:24 pm, Jack Campin <bo...@purr.demon.co.uk> wrote:
> >>> Mars is very close to earth at the moment.
> >>> Does that have any effect on earth.
> >> Freighters for the lizards you mean?
> > I don't understand.
>
> He is alluding to:
> http://www.davidicke.com/

And:
> http://groups.google.com/group/sci.geo.earthquakes/msg/694ed08801e820ab

[Skywise]

Brian <bcl...@es.co.nz> wrote in news:1350538017357459137.458003bclark-
es.c...@free.teranews.com:

> Mars is very close to earth at the moment. Does that have any effect on
> earth.

If you mean gravitationally, very very verrrrrrrrrry small.
Probably less than an SUV going down the road.

If there's interest, I might be persuaded to crunch the numbers.

Brian

[Weatherlawyer]

They seem to have a more marked connection with tornadoes.
Whatever they will clear the Atlantic by Friday leaving inclement
weather so something os bound to break on Thursday.

Got to be the worst of the tornadoes.
Or not as the case may be.
They don't appear to have engendered any volcano swarms. Not that I
have been keeping my eye on that. Red Puma might, being based in
Switzerland (that's in Paris, France for any Americans reading this.)

The two dark patches off Antarctica disappear later today. Without
doing all that much to the definition of the air masses until
Saturday. It does look like things are settling down down there except
for the width of the corridors that are lower than 1010 millibars.

Then on Saturday that confluence to the peninsula reaches the pole
again. All the way from 120 W. to 160 E.
Thatr's a lot of ground.

It becomes a real mess after Sunday.

[Weatherlawyer]

Anyone care to have a go at this:

5 2012/05/02 13:48:12 23.285 -44.938 NORTHERN MID-ATLANTIC
RIDGE
5.5 2012/05/02 12:17:59 -54.588 143.861 WEST OF MACQUARIE
ISLAND
5 2012/05/02 09:57:31 9.292 94.094 NICOBAR ISLANDS, INDIA
REGION
5.1 2012/05/02 05:14:03 -24.223 -176.198 SOUTH OF THE FIJI
ISLANDS
5 2012/05/02 02:53:07 -24.23 173.887 SOUTHEAST OF THE
LOYALTY ISLANDS

6 2012/05/01 22:43:38 14.466 -92.909 OFFSHORE CHIAPAS,
MEXICO
5.7 2012/05/01 16:38:01 18.518 -100.841 MICHOACAN, MEXICO
5 2012/05/01 15:44:37 21.816 -108.437 OFF THE COAST OF BAJA
CALIFORNIA SUR
5.4 2012/05/01 13:59:44 -2.658 121.884 SULAWESI, INDONESIA
5.4 2012/05/01 05:33:51 25.395 141.361 VOLCANO ISLANDS,
JAPAN REGION

5.1 2012/04/30 21:40:39 3.315 92.965 OFF THE WEST COAST OF
NORTHERN SUMATRA
5 2012/04/30 20:17:45 -29.637 -176.17 KERMADEC ISLANDS
REGION
5.1 2012/04/30 19:15:27 -20.8 -175.708 TONGA
5 2012/04/30 19:12:50 3.657 127.392 KEPULAUAN TALAUD,
INDONESIA
5.1 2012/04/30 18:20:08 17.201 147.669 MARIANA ISLANDS
REGION
5.6 2012/04/30 18:11:45 -5.757 128.562 BANDA SEA
5.1 2012/04/30 16:56:44 -8.368 105.403 SOUTH OF JAVA,
INDONESIA
5.4 2012/04/30 13:06:59 14.431 93.36 ANDAMAN ISLANDS, INDIA
REGION
5.7 2012/04/30 08:00:10 1.759 89.575 NORTH INDIAN OCEAN
5.5 2012/04/30 07:39:45 -29.838 -71.494 OFFSHORE COQUIMBO,
CHILE

5.8 2012/04/29 15:02:18 39.729 142.074 NEAR THE EAST COAST
OF HONSHU, JAPAN
5.8 2012/04/29 10:28:52 35.601 140.483 NEAR THE EAST COAST
OF HONSHU, JAPAN
5.4 2012/04/29 08:09:06 2.709 94.556 OFF THE WEST COAST OF
NORTHERN SUMATRA
5.2 2012/04/29 01:57:52 -3.052 136.124 PAPUA, INDONESIA
5.7 2012/04/28 19:21:05 -5.325 152.153 NEW BRITAIN REGION,
PAPUA NEW GUINEA
5 2012/04/28 19:06:48 -41.034 43.491 PRINCE EDWARD ISLANDS
REGION
5.3 2012/04/28 18:00:36 -3.304 100.405 KEPULAUAN MENTAWAI
REGION, INDONESIA
6.7 2012/04/28 10:08:08 -18.643 -174.725 TONGA



If you want a clue, I haven't included the tornado spells in the USA:
> http://www.spc.noaa.gov/climo/reports/today.html
Should I?

Cos I should.

(If you ask nicely I could give you another line on it.)

[Weatherlawyer]

On Apr 29, 11:38 pm, Weatherlawyer <weatherlaw...@gmail.com> wrote:

We havwe had so far a resonating series of quakes that seem to
reverberate from one side of the phenomenon that is the Indian/
Pacific.

If I had to choose a spell that sums up periods where the lunar phase
at 10 or 4 o'clock determines the weather without some sort of build
up detracting from the picture this week would be it so far.

> Be it dry or wet, the weather always pays its debt.

> And who can explain how seismicity does the same?

>
> > The North Atlantic seems to be set up for
> > doubles and triples if not eruptions of volcanoes. And erupting
> > volcanoes.
>
> > Similarly after the dark mass clears this afternoon, the
> > Antarctic looks to be setting up for many duplicate and triplicate
> > earthquakes.
>

> > The next spell is:
> > 29 Apr to 6 May 2012 @ 09:58  Which is volcanic in nature.

As of 1 May about 5 volcanoes shed plumes about half a mile high.
Nothing that exceptional. But it is difficult to measure what is
exceptional until world trade comes to an halt.

There were not that many significant earthquakes but there were quite
a few tornadoes.

From now on though the picture is about to change. Though of course
how stable that will be I can only guess.
What looks to be a tropical storm is developing in the southern
hemisphere maybe in the Indian Ocean but also tracking somehow int the
Pacific.

The Low hovering over Britain the laat few days moves up to
Scandinavia and becomes a blocking Low. The series of Blocking Highs
associated with tornadoes in the USA remains in place in the same
manner it has had all week. (Deflating with the worst of the
tornadoes.)

So those signs of multiple earthquakes could actually mean some pretty
disasterous tornadoes are going to occur. It looks like a triplicate
or a Large 5 and a Mag 6 or so from Noon to midnight. Tomorrow the two
blocks develop.
Sunday Noon the High deflates again. So tornadoes for that part of
things.

Which takes us to the end of this spell.

In the Antarctic, the close isobars reach all the way from the
Peninsula to the Ross Icec Shelf. Which is as much of that phenomenon
as I have seen on that chart. Stuff crossing the land mass seems to
indicate windstorms rather than earthquake storms.

There is also one on the Amery Ice Shelf that lasts till Monday.
The cyclone in the southern Pacific grows larger than Australia before
the charts give out. But don't appear to develop into earthquake
features. Nothing greater than 6 at any rate.

I'm assuming the way it evolves into a multi-pointed system means
multiple earthquakes of smaller magnitude.
But I don't know what things tend to look like in the summer down
there (which is its winter) so stormy is as stormy does, I suppose.

[Weatherlawyer]

On May 4, 11:52 am, Weatherlawyer <weatherlaw...@gmail.com> wrote:
>
> > Be it dry or wet, the weather always pays its debt.

A long time ago I dreamed up the idea you could forecast the magnitude
of a quake by the time lage between them.
I don't know how naive that was nor if I counted mag 4s.

If I remember correctly an 18 hour lapse was worth a Mag 7.
A 15 hour lapse a Mag 6 and
A twelve hour lapse
...Something or other.

04/05/12
5.0 16:23 NORTH INDIAN OCEAN

03/05/12
5.2 18:08 NORTH OF HONDURAS

6 till 4; that's 10 hours.
I must have included mag 4s in the scheme. Either that or it didn't
work very well.


2012/05/04
5.0 16:23 NORTH INDIAN OCEAN
4.7 10:55 VANCOUVER ISLAND, CANADA REGION
4.0 07:07 GUERRERO, MEXICO
4.5 06:29 NEW BRITAIN REGION, PAPUA NEW GUINEA
4.6 05:34 HOKKAIDO, JAPAN REGION
4.5 02:54 NEAR THE EAST COAST OF HONSHU, JAPAN
4.8 02:31 NEW BRITAIN REGION, PAPUA NEW GUINEA
4.3 02:00 WESTERN TURKEY


2012/05/03
4.1 21:45 WESTERN TURKEY
4.9 21:20 KURIL ISLANDS
5.2 18:08 NORTH OF HONDURAS


Not so impressive now, is it.

[Brian]

Well in New Zealand we have had a 5.5 Mag quake followed by a 6.0 Mag quake
approx 2 hours later. This happened on June and Dec last year.

--
Regards Brian

[Weatherlawyer]

On May 5, 2:38 am, Brian <bcl...@es.co.nz> wrote:
> Weatherlawyer <weatherlaw...@gmail.com> wrote:
>
> >>> Be it dry or wet, the weather always pays its debt.
>
> > A long time ago I dreamed up the idea you could forecast the magnitude

> > of a quake by the time lag between them.

I didn't say it worked I just noticed that there was a pattern that
required an explanation. Obviously I dropped the idea for a reason. I
can't remember much about it now. This was a few years ago.

Looking at the NEIC list for the latest mag 5 quakes you can see there
wasn't one since 4:30ish pm last night.

But we did have these instead:

1903 6 W WORTHINGTON NOBLES MN 4363 9572 (FSD)
1910 WORTHINGTON NOBLES MN 4363 9560 TORNADO TOUCHDOWN 3/4 MILES
NORTH OF WORTHINGTON NEAR THE AIRPORT. (FSD)
1928 5 N ROUND LAKE NOBLES MN 4361 9547 TORNADO TOUCHDOWN 5
MILES NORTH OF ROUND LAKE MN. (FSD)
1940 7 SW LAKEFIELD JACKSON MN 4361 9527 (FSD)
1949 2 S LAKEFIELD JACKSON MN 4365 9517 TORNADO TOUCHDOWN 2
MILES SOUTH OF LAKEFIELD MN. (FSD)
2005 5 SE LAKEFIELD JACKSON MN 4363 9511 BRIEF TOUCHDOWN (FSD)
2015 3 SSW SIOUX CENTER SIOUX IA 4304 9620 (FSD)
2022 3 N ORANGE CITY SIOUX IA 4305 9606 (FSD)
2045 3 N SHERBURN MARTIN MN 4370 9473 (MPX)
2050 3 W PRIMGHAR O'BRIEN IA 4309 9569 (FSD)
2141 3 SSE RUTHVEN PALO ALTO IA 4309 9488 (DMX)
2215 3 W ALGONA KOSSUTH IA 4307 9429 FUNNEL CLOUD REACHING TO
THE GROUND. NO DEBRIS OBSERVED AND QUICKLY BECAME RAIN WRAPPED. (DMX)
2253 2 S KIESTER FARIBAULT MN 4351 9371 (MPX)
2302 1 NW KIESTER FARIBAULT MN 4355 9373 TREES DAMAGED FROM THE
TORNADO. (MPX)
2303 5 N GOLDFIELD WRIGHT IA 4281 9392 STRONGLY ROTATING WALL
CLOUD WITH A CIRCULATION ON THE GROUND. (DMX)

And that is just for a small part of just one continent. We had some
strong winds here last night. We don't have a tornado watch like they
have in the USA. In fact most people in Britain are unaware that we
have more tornadoes per square mile than any other country in the
world.

Usually that is because of the size of our tornadoes but also, the
weather changes so quickly over here that people take little notice of
it despite the clichés.

In fact, I did say that I was expecting the geo-phenomena to be wind; -
tornadoes.

I had presumed because of the time of the phase that things would or
could become volcanic. But I suspect volcanic activity is not much
more than background level.

Tornadic activity OTOH....

http://www.spc.noaa.gov/climo/reports/today.html

But going back to your comment:
> In New Zealand we have had a 5.5 Mag quake followed by a 6.0 Mag quake

> approx 2 hours later. This happened on June and Dec last year.

If you look up the dates for those events and compare them to the
North Atlantic charts for the times involved:
> http://www.woksat.info/wwp7.html

You will see that there were suitable fronts indicative of the events,
some hours, if not a few days, in advance of them. One of them will be
an occluded front and one of them running parallel to it will be a
mixed line of warm cold and occluded fronts.

There just happens to be an example of such an event running down the
coast of Europe at the moment. (Noon, 5 May 2012: >
http://www.metoffice.gov.uk/weather/uk/surface_pressure.html) It is
running from the cyclone in the Baltic.

Also on that same chart is news of weakening and developing weather:
> http://www.metoffice.gov.uk/weather/uk/guide/key.html#pressure
This indicates a change in the pattern which is something brought
about by raspid full use of whatever energy is in the system beicoming
expended.

That is...
A Nurthkwace.
(Actually 2, see text.)

If you have a web site you can put the data on there and post a link
to show us. If you don't have a site, allow me to introduce you to
Opera Communities:
> http://my.opera.com/community/explore/

[Weatherlawyer]

On May 5, 9:13 am, Weatherlawyer <weatherlaw...@gmail.com> wrote:
>
> This indicates a change in the pattern which is something brought

> about by rapid full use of whatever energy is in the system beicoming

> expended.
>
> That is...
> A Nurthkwace.
> (Actually 2, see text.)

Did I ever mention I tend to forget things?

> That is...an earthquakes (Actually 2, see text.) should have read:

> That is... 2 earthquakes or more, or their equivalent as tornadoes or some-such.
(There should have been a tropical depression according to yesterday's
forecasts but the event did not last as long as it might have. So no
storms there.)

> If you have a web site you can put the data on there and post a link such as:
> http://my.opera.com/Weatherlawyer/blog/2012/05/05/be-it-dry-or-wet-the-weather-always-pays-its-debt?cid=88766532#comment88766532

[Weatherlawyer]

On May 5, 10:20 am, Weatherlawyer <weatherlaw...@gmail.com> wrote:
>
> > That is...an earthquakes (Actually 2, see text.) should have read:
> > That is... 2 earthquakes or more, or their equivalent as tornadoes or some-such.

This sort of thing:

4.7 M. 2012/05/05 @ 00:20. 41.4S. 91.8W. SOUTHEAST OF
EASTER ISLAND
4.9 M. 2012/05/05 @00:11. 41.1S. 91.0W. SOUTHEAST OF
EASTER ISLAND

I had in the days I was talking about, come to view such pairs as the
ends of storms.
Not that many that p[arallel on the chart for midnight before these
things occurred.
But some -enough to do the deed. Or match it that is.

We are still shy a couple of quakes though. (Or storms.) More striking
ones, at that:
http://www.wetterzentrale.de/topkarten/fsfaxsem.html
(All the more so it being the end of the lunar spell.)

[Weatherlawyer]

2012/05/05
5.5 M. @ 20:23. TONGA
I'm surprised nothing larger than this before the fat lady sang.
Though it is still a few hours before the curtain drops.

Maybe it was all in this:
http://www.spc.noaa.gov/climo/reports/120504_rpts.html

I wonder if the potential energy used had the same value with regard
to upsetting hi tech as in air and sea accidents?

It isn't likely as weather model runs when there are no large
earthquakes tend to be more accurate; the classical weather
forecasters, more certain. There is nothing like a large quake for FUD
and ferrets.

[Weatherlawyer]

There is a relationship between the tornadoes that strike the USA and
the number of earthquakes world wide, generally. It is related to the
North Atlantic anticyclone and is thus in many respects seasonal.

When the anticyclone is on the western coast of the North Atlantic,
the tendency is for tornadoes. When it is on the Eastern coast the
tendency is for earthquakes.

But as long as the Anticyclone lasts, the occurrence of earthquakes is
minimal.

Once the anti-storm breaks (anticyclosis?) we are given a thump in
which the world catches up to the rest of the solar system. Usually a
mega-quake or two super-quakes.

And of course the situation doesn't end with the initial quakes. There
is a reverberation or oscillation as the billions of tons of planet
and moon (6,600,000,000,000,000,000,000 +
6,600,000,000,000,000,000,000/6 tons) settle down again into an uneasy
co-existence.

http://www.bigsiteofamazingfacts.com/how-much-does-the-earth-weigh

The moon is 1/6th the weight of the earth but 1/81st of its volume.
That means a lot of leverage is in constant change. Which amounts to a
polar shift in equatorial motion from time to time.

The centre of gravity is somewhat offset from the middle of the moon.
And those big eyes of the man in it are extremely heavy.

It all turns out to make the mid point of the earth/moon joint orbit
some 1000 miles below the surface of the earth.

A central point that includes the entire mass of the solar system
(which is usually given as the sun, which itself is not at the centre
of the solar system and is a very large and extremely motile ball of
fuzz to start with.)

This central point is called the barycentre and moves at the speed of
the tides. (The alleged tides.)

It's all very complicated and requires oodles of computing power and
brainiacs to complete an accurate ephemeris of it all for just one
year -which is usually in need of correcting by the time the printers
finish with it.

Don't let that put you off.
Anyone can do the puzzle.

[Weatherlawyer]

On May 10, 2:58 am, Weatherlawyer <weatherlaw...@gmail.com> wrote:
>
> There is a relationship between the tornadoes that strike the USA and
> the number of earthquakes world wide, generally. It is related to the
> North Atlantic anticyclone and is thus in many respects seasonal.

The above is not what I refer to in the following:

> It all turns out to make the mid point of the earth/moon joint orbit
> some 1000 miles below the surface of the earth.
>
> A central point that includes the entire mass of the solar system
> (which is usually given as the sun, which itself is not at the centre
> of the solar system and is a very large and extremely motile ball of
> fuzz to start with.)
>
> This central point is called the barycentre and moves at the speed of
> the tides. (The alleged tides.)
>
> It's all very complicated and requires oodles of computing power and
> brainiacs to complete an accurate ephemeris of it all for just one
> year -which is usually in need of correcting by the time the printers
> finish with it.

"The folks who do tidal measurements don't get into the physics theory
much.

Tide tables are constructed from past measurements and computer
modeling that does not take underlying theory much into account. It is
much like the pretty weather maps you see on TV, computer generated
without a detailed understanding of all the physical details.

The task is just too complicated for even our best computers, and the
data fed into them is far from the quality and completeness we'd need.

You might think that with global positioning satellites we'd have the
measurements of water and land tides accurate to a fraction of a
smidgen. You'd be wrong.

If you check the research papers of the folks who do this, you see
that they are still dissatisfied with the reliability of such data
even over small geographic regions. We can map the surface of land to
within a meter this way, and get relative height measurements equally
well, but absolute height measurements relative to the center of the
Earth are much poorer.

Many of the numbers you see tossed about in elementary level books are
copied from other elementary level books, without independent checking
and without inquiring whether they were guestimates from theory or
from actual measurement."

> http://www.lhup.edu/~dsimanek/scenario/tides.htm

Although the author nods to the way co-tidal lines appear, he doesn't
seem to pay much attention to the fact the so called tidal bulges he
took so long to rebuff, don't even exist.

The actual relationship is a wave harmonic.