PSN-L Email List Message
Subject: Re: SOLAR ACTIVITY VS. EARTHQUAKES
From: AHrubetz@.......
Date: Sun, 20 Jun 2010 13:30:01 EDT
Yes, putting variable stresses on the Earth may be likened to the straw
that broke the camels back.
Several years ago, my amigo from Guatemala, Rolando Benitez and I observed
and discussed a diurnal rhythm of pressure variations on our barographs:
Pressure maxima occurred at approximately 1000 and 2200 hours and pressure
minima at roughly 0400 and 1600 hours local time. We deduced that the
atmospheric pressure variations were solar-induced, and that the diurnal
atmospheric pressure "tides" were primarily excited by the Sun's heating of the
atmosphere. By heating the atmosphere by day and not at night relative to
a fixed point on Earth, the cycle generates atmospheric tides that have
periods relative to the solar day. On a latitude basis, these variations
should be greater at the equator since the intensity of the Sun's rays are at
a maximum there.
A subsequent review of the literature (S. Hastenrath, Climate Dynamics of
the Tropics, Chapter 2, "Diurnal Waves of Atmospheric Pressure According
to Theory") revealed that in theory ". . There is a 12-hour pressure wave .
.. . that trails from east to west in such a way that any location maxima
are experienced around 10 and 22 hrs, and minima around 4 and 16 h. local
time." His interesting chart on page 10 corresponded to our observations.
The NASA EARTH OBSERVATORY reports that:
"For over two centuries, meteorologists were puzzled by the observation
that atmospheric pressure in the tropics peak at 10 a. m. and 10 p.m. nearly
every day. In the late 1960's, a theory was proposed that these surface
pressure variations result from waves that are generated by the Sun's heating
of the upper atmosphere. The waves, called solar tides, propagate to the
ground as they travel around the globe . . . "
There are numerous references on the subject, such as Wikipedia's
"Atmospheric Tide," and H. D. Rathgeber's Semi-Diurnal Variations of Atmospheric
Pressure and of Cosmic Ray Intensity - Proceedings of the Physical Society,
Melbourne, 1950.
So, I conclude that yes, solar-induced pressure variations are occurring
on Earth, and that it is theoretically possible that these variations may
trigger a nascent earthquake.
Al Hrubetz
In a message dated 6/20/2010 3:05:54 A.M. Central Daylight Time,
gmvoeth@........... writes:
You Mean Like
90% of all people who die have eaten tomatoes
sometime in their life ??
All I know is Nickle is Magneto Strictive and
Quartz is Piezo Electric both things will change shape
in the presence of one field or the other.
Now the earth is a big thing full of both those
and the sun generates lots of E and B fields ???
Maybe the sun can change the dimensions
of the Earth slightly based upon those ideas.
Putting stresses and strains into like
the straw which broke the camels back ??
geoff
----- Original Message -----
From:
To:
Sent: Wednesday, June 16, 2010 4:48 PM
Subject: SOLAR ACTIVITY VS. EARTHQUAKES
>A friend sent me a portion of a newsletter form the Space and Science
> Research Center, apparently a private concern out of Florida. The
report dealt
> primarily with prediction of agricultural production vs sunspot
activity.
> But what caught my eye was the statement: "After studying 300-plus
years
> of data, an SSRC study also found decreased solar activity had an 80.6%
> correlation with increased volcanic activity, and 100% correlation with
> essentially all of the largest U. S. earthquakes."
> I had never heard of such an analogy. Is this make believe?
>
> Al Hrubetz
>
__________________________________________________________
Public Seismic Network Mailing List (PSN-L)
To leave this list email PSN-L-REQUEST@.............. with
the body of the message (first line only): unsubscribe
See http://www.seismicnet.com/maillist.html for more information.
Yes, putting variable stresses on the Earth ma=
y be=20
likened to the straw that broke the camels back.
Several years ago, my amigo from=
=20
Guatemala, Rolando Benitez and I observed and discussed a diurnal rhythm=
of=20
pressure variations on our barographs: Pressure maxima occurred at=
=20
approximately 1000 and 2200 hours and pressure minima at roughly 0400 and=
1600=20
hours local time. We deduced that the atmospheric pressure=
=20
variations were solar-induced, and that the diurnal=20
atmospheric pressure "tides" were primarily excited by the=
Sun's=20
heating of the atmosphere. By heating the atmosphere by day and not=
at=20
night relative to a fixed point on Earth, the cycle generates=20
atmospheric tides that have periods relative to the solar=20
day. On a latitude basis, these variations should be=
=20
greater at the equator since the intensity of the Sun's rays are at a maxi=
mum=20
there.
A subsequent review of the literature (S.=
=20
Hastenrath, Climate Dynamics of the Tropics, Chapter 2, "Diurnal=
Waves=20
of Atmospheric Pressure According to Theory") revealed that in theory&=
nbsp;=20
". . There is a 12-hour pressure wave . . . that trails from east to west=
in=20
such a way that any location maxima are experienced around 10 and 22 hrs,=
and=20
minima around 4 and 16 h. local time." His interesting chart on=
page=20
10 corresponded to our observations.
The NASA EARTH=20
OBSERVATORY reports that:
"For over two centuries, meteorologists were=
puzzled=20
by the observation that atmospheric pressure in the tropics peak at 10 a.=
m. and=20
10 p.m. nearly every day. In the late 1960's, a theory was proposed=
that=20
these surface pressure variations result from waves that are generated by=
the=20
Sun's heating of the upper atmosphere. The waves, called solar tides=
,=20
propagate to the ground as they travel around the globe . . .=20
"
There are numerous references on the subject,=
such as=20
Wikipedia's "Atmospheric Tide," and H. D. Rathgeber's Semi-Diurnal Vari=
ations=20
of Atmospheric Pressure and of Cosmic Ray Intensity - Proceedings of=
the=20
Physical Society, Melbourne, 1950.
So, I conclude that yes, solar-induced pressur=
e=20
variations are occurring on Earth, and that it is theoretically possible=
that=20
these variations may trigger a nascent earthquake.
Al Hrubetz
In a message dated 6/20/2010 3:05:54 A.M. Central Daylight Time,=20
gmvoeth@........... writes:
You Mean=20
Like
90% of all people who die have eaten tomatoes
sometime in the=
ir=20
life ??
All I know is Nickle is Magneto Strictive and
Quartz=
is=20
Piezo Electric both things will change shape
in the presence of one=
field=20
or the other.
Now the earth is a big thing full of both those
=
and=20
the sun generates lots of E and B fields ???
Maybe the sun can ch=
ange=20
the dimensions
of the Earth slightly based upon those ideas.
P=
utting=20
stresses and strains into like
the straw which broke the camels back=
=20
??
geoff
----- Original Message -----
From:=20
<AHrubetz@.......>
To: <psn-l@..............>
Sent:=20
Wednesday, June 16, 2010 4:48 PM
Subject: SOLAR ACTIVITY VS.=20
EARTHQUAKES
>A friend sent me a portion of a newsletter fo=
rm=20
the Space and Science
> Research Center, apparently a priva=
te=20
concern out of Florida. The report dealt
> primarily=
with=20
prediction of agricultural production vs sunspot activity. =
=20
> But what caught my eye was the statement: "After studying=
=20
300-plus years
> of data, an SSRC study also found decrease=
d=20
solar activity had an 80.6%
> correlation with increased volcanic=
=20
activity, and 100% correlation with
> essentially all of the larg=
est U.=20
S. earthquakes."
> I had never heard of such an analogy.&nbs=
p; Is=20
this make believe?
>
> Al=20
Hrubetz
>
_____________________________________________________=
_____
Public=20
Seismic Network Mailing List (PSN-L)
To leave this list email=20
PSN-L-REQUEST@.............. with
the body of the message (first lin=
e=20
only): unsubscribe
See http://www.seismicnet.com/maillist.html for mo=
re=20
information.
[ Top ]
[ Back ]
[ Home Page ]