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Old January 11th 05, 10:32 AM posted to uk.sci.weather
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Default "Has the tsunami changed world weather forever?"

Joe Egginton wrote:
Gianna Stefani wrote:
Dave Ludlow wrote:

On 10 Jan 2005 16:41:48 -0800, (Scott
Whitehead) wrote:


Don't fall off your chairs laughing, everybody, but there is an
article in today's (Tuesday) Sun which is blaming the weekend's
gales and heavy rain on the tsunami!

Astrophysicist Piers Corbyn believes the tsunami "could have an
effect on the weather".
He is quoted as saying: "The immediate effect is that it has put a
lot more water on the land. This will evaporate more quickly and
so make the atmosphere damper."

It's a "big fear haunting weather scientists". The article is on
P25 if anyone is chomping at the bit to buy a copy!!



He's not the only one in need of some education. A spokeswoman for
the Energy Watchdog (whatever it's called) was interviewed about the
Carlisle floods yesterday, on Sky News. She said: "I don't know if
this heavy rain was caused by the tsunami, but..." I kid you not.

This must be a candidate for Quote of the Year.


I did notice we had a very high tide yesterday (the mid-day tide) ...
guess that was my share of the wave then (;


Yes, it bounced around the world, deflecting off coastlines ;-)


ISTR seeing some reports that the tsunami did indeed cause unusual tide
levels in various parts of the globe...



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Old January 11th 05, 10:57 AM posted to uk.sci.weather
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"John Hall" wrote in message
...
In article ,
a writes:
I heard some report saying the quake that caused the tsunami was so great

it
shifted the earths axis of rotation by an inch or something - is that

true,
and how on earth (lol) do you measure something like that on a planetary
scale!?


That was covered in a thread on here a week or so ago. It shouldn't be
hard to find on Google.



sorry, dont get here very often )


  #13   Report Post  
Old January 11th 05, 11:02 AM posted to uk.sci.weather
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via sci.space.news

FOR IMMEDIATE RELEASE: 1/10/05

NOAA 2005-104

NOAA SCIENTISTS ABLE TO MEASURE TSUNAMI HEIGHT FROM SPACE

After reviewing data from four Earth-orbiting radar satellites, NOAA scientists
today announced they were able to measure the height of the devastating tsunami
that erupted in the Indian Ocean. The ability to make depth surveys from space
may lead to improvements in the models that forecast the hazardous effects of
tsunamis. NOAA is an agency of the U.S. Department of Commerce.

The height goes down over time as the wave spreads over the ocean and the energy
is expended on shore. At 2 hours after the quake, it was 60 cm (about 2 feet)
high. By 3 hours 15 minutes after the quake, that dropped to around 40 cm (about
16 inches) high. By 8 hours 50 minutes after the quake, the wave spread over
most of the Indian Ocean and was quite small in most areas -- 5 to 10 cm (2 to 4
inches) -- about the limit of the satellite resolution. However, the wave was
still large enough after all that elapsed time that it was still bouncing around
in the Bay of Bengal still appears about 25 cm high (10 inches) as measured by
the satellites.

Several days after the Indian Ocean tsunami, scientists from NOAA's Laboratory
for Satellite Altimetry in Silver Spring, Md., examined data from the four
spacecraft -- the TOPEX/Poseidon and Jason, operated jointly by NASA and the
French space agency, CNES; the European Space Agency's Envisat and the U.S.
Navy's Geosat Follow-On.

"By chance, these satellites were in the right place at the right time," said
Walter H.F. Smith, a geophysicist at the NOAA LSA, which routinely monitors
sea-level variations from space using radar measurements taken by several
satellites. The measurements are used to make simple charts of unexplored ocean
basins, and to forecast the intensification of hurricanes, the onset of an El
Niño, and other weather and climate events.

Upon further investigation of satellite data, NOAA researchers were able to
detect the Indian Ocean tsunami in profiles of sea level along the satellites'
flight paths by comparing the sea level seen on Dec. 26, 2004, with the sea
level measurements the satellites picked up a few days, or weeks, earlier.

Also, U.S. and French teams, working in parallel with data from the joint
NASA/French Space Agency's Jason and TOPEX/Poseidon, independently confirmed the
satellites' measurements of the height of the tsunami waves. "These observations
are unique and of tremendous value for testing and improving tsunami computer
models and developing future tsunami early warning systems," said Lee-Lueng Fu,
of NASA's Jet Propulsion Laboratory in Pasadena, Calif.

Smith emphasized that LSA does not get the satellite data until several hours
after a tsunami has developed -- too late to be used as a real-time forecast.

"Right now, this technique is not a first line of defense in tsunami hazard
monitoring and warnings, but it gives scientists a window to tsunami activity in
the deep and in remote parts of an ocean basin, too far away from coastal tide
gauges and other instruments that could detect it," Smith added.

Smith said NOAA researchers proposed that the best application of satellite data
to improve tsunami hazard forecasts would be a reconnaissance mapping of the
ocean floor from space. "The detailed shape of the sea bed, all across the ocean
basin, determines the focusing -- or diffusion -- of tsunami energy barreling
toward the coast."

At NOAA's Pacific Marine Environmental Laboratory in Seattle, scientists have
developed a computer model, showing how the tsunami moved across the Indian
Ocean. Combined with the data from LSA, the PMEL model showed the changing sea
levels along the flight paths of the four satellites, which crossed the ocean
basin after the earthquake.

PMEL scientists apply the tsunami computer model to provide hazard assessments
for communities at risk, and develop a real-time forecast system for NOAA's
Tsunami Warning Centers.

Vasily Titov, an oceanographer at PMEL, said the satellite observations would be
used in ongoing research to improve the understanding of how tsunamis move
across the ocean.

The NOAA Satellite and Information Services is America's primary source of
space-based oceanographic, meteorological and climate data. It operates the
nation's environmental satellites, which are used for ocean and weather
observation and forecasting, climate monitoring, and other environmental
applications. Some of the oceanographic applications include sea-surface
temperature for weather forecasting and sea-surface heights for prediction of El
Niño and hurricane intensification.

NOAA is dedicated to enhancing economic security and national safety through the
prediction and research of weather and climate-related events and providing
environmental stewardship of the nation's coastal and marine resources.

Relevant Web Sites

* NOAA
http://www.noaa.gov
* NOAA's Satellite and Information Services
http://www.nesdis.noaa.gov
* NOAA Laboratory for Satellite Altimetry
http://ibis.grdl.noaa.gov/SAT/
* NOAA Satellites
http://www.noaa.gov/satellites.html



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Old January 11th 05, 11:43 AM posted to uk.sci.weather
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Default "Has the tsunami changed world weather forever?"

Scott Whitehead wrote:
Don't fall off your chairs laughing, everybody, but there is an
article in today's (Tuesday) Sun which is blaming the weekend's gales
and heavy rain on the tsunami!

Astrophysicist Piers Corbyn believes the tsunami "could have an effect
on the weather".
He is quoted as saying: "The immediate effect is that it has put a lot
more water on the land. This will evaporate more quickly and so make
the atmosphere damper."

It's a "big fear haunting weather scientists". The article is on P25
if anyone is chomping at the bit to buy a copy!!


Why are people so closed minded? As soon as you dismiss something and
close your mind to it you are limiting your potential. I truly believe
we should all spend time thinking about other possibilities every day.

According to NASA the tsunami has changed the day's duration, the north
pole has shifted by centimeteres and the shape of the Earth has changed.
If this wasn't reported by NASA but just mentioned on a radio show you
would all be ridicluing the statement. Would you not?

I don't believe the tsunami caused this weekends gales, but I am not
ruling it out 100%, also I am not ridicluing it. Learning to respect
other people points of views is a good lesson to learn, not easy but
worth doing.

Open you minds!

Graham
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Old January 11th 05, 11:55 AM posted to uk.sci.weather
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"Dave Ludlow" wrote in message
...
On 10 Jan 2005 16:41:48 -0800, (Scott
Whitehead) wrote:

Don't fall off your chairs laughing, everybody, but there is an
article in today's (Tuesday) Sun which is blaming the weekend's gales
and heavy rain on the tsunami!

Astrophysicist Piers Corbyn believes the tsunami "could have an effect
on the weather".
He is quoted as saying: "The immediate effect is that it has put a lot
more water on the land. This will evaporate more quickly and so make
the atmosphere damper."

It's a "big fear haunting weather scientists". The article is on P25
if anyone is chomping at the bit to buy a copy!!


He's not the only one in need of some education. A spokeswoman for the
Energy Watchdog (whatever it's called) was interviewed about the
Carlisle floods yesterday, on Sky News. She said: "I don't know if
this heavy rain was caused by the tsunami, but..." I kid you not.

This must be a candidate for Quote of the Year.

--
Dave
*wringing his hands in despair*



The Sun, Sky News - enough said about them, the reporters and the
organisation for which they work.

What will it be next from them? Something like:

"All the extra water dumped on this Country as a result of that damper
atmosphere will in turn evaporate and be carried even further north into the
Arctic, creating a damper atmoshere there and as a result a raging (even for
that area) blizzard over Greenland causing the ice sheet to grow
significantly in size, leading to a significant cooling of the Arctic and
will then lead to 2005/06 being the coldest winter the Northern hemisphere
has ever known"?

I wouldn't put it past them. In the past, the average 5 yr old schoolchild
has been shown to know more about the properties of water and ice crystals
at different temperatures than some reporters working for that organisation!
Furthermore, wasn't it the above Newspaper that carried a headline late last
January that the cold spell we were all waiting for had been delayed because
the cold air was taking longer than expected to get here from Canada?

Just glad I don't contribute in any way with any of their products to their
coffers.

--
Pete

Please take my dog out twice to e-mail

---------------------------------------------------------------
The views expressed above are entirely those of the writer and
do not represent the views, policy or understanding of any
other person or official body.
---------------------------------------------------------------



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Old January 11th 05, 12:37 PM posted to uk.sci.weather
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Default "Has the tsunami changed world weather forever?" (possibly morepedantry)

Mike Tullett wrote:
On Tue, 11 Jan 2005 10:37:17 -0000, a wrote in



I heard some report saying the quake that caused the tsunami was so great it
shifted the earths axis of rotation by an inch or something - is that true,
and how on earth (lol) do you measure something like that on a planetary
scale!?



See

http://science.nasa.gov/headlines/y2...htm?list962280


And quoting therefrom:

"devastating megathrust earthquake" ... if the word 'megathrust' exists
(and it does now I suppose) does it not mean 'a million thrusts' which
in turn means that it is meaningless?

"This continues the trend of earthquakes making Earth less oblate. Less
oblate means more round." ... as an unqualified person, but a logical
one, I would think they are looking at that backwards. The natural
tendency of a spinning ball to become spherical might cause the plates
to move with resulting earthquakes perhaps?

"None of these changes have yet been measured--only calculated. But Chao
and Gross hope ..." ... aye we all hope.

I do not mind if I am incorrect. I would only mind if I do not know I
am incorrect.

--
Gianna Stefani

www.buchan-meteo.org.uk
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Old January 11th 05, 01:08 PM posted to uk.sci.weather
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"Mike Tullett" wrote See
snip
http://science.nasa.gov/headlines/y2...htm?list962280


Thanks, Mike. I notice the tailpiece to this article says: "None of these
changes have yet been measured--only calculated. But Chao and Gross hope
to detect the changes when Earth rotation data from ground based and
space-borne sensors are reviewed".

Apart from the uncertainty this implies, I'm sure that other natural
forces are doing similar things - some maybe more, some less - without
attracting any of this attention. Which (I'm afraid), in my book, makes
this sort of hype a total non-event.

- Tom.


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Old January 11th 05, 02:13 PM posted to uk.sci.weather
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Default "Has the tsunami changed world weather forever?" (possibly more pedantry)

"He who knows not and knows not he knows not, he is a fool - shun him;
"He who knows not and knows he knows not, he is a child - teach him;
"He who knows and knows not he knows, he is asleep - wake him;
"He who knows and knows he knows, he is a wise man - hear him!"


I wonder which category Piers Corbyn fits??

Anne



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Old January 11th 05, 02:41 PM posted to uk.sci.weather
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Default "Has the tsunami changed world weather forever?"

Felly sgrifennodd Tom Bennett :
"Mike Tullett" wrote See
snip
http://science.nasa.gov/headlines/y2...htm?list962280


Thanks, Mike. I notice the tailpiece to this article says: "None of these
changes have yet been measured--only calculated. But Chao and Gross hope
to detect the changes when Earth rotation data from ground based and
space-borne sensors are reviewed".


But something remarkable seemed to happen around 26/12 to the UT1-UTC values
according to http://maia.usno.navy.mil/search/search.html.
Try putting in dates from around 20/12 to today and see what you get.

Or was this just coincidence?

(UT1 is solar time, UTC is atomic clock time)

Adrian

--
Adrian Shaw ais@
Adran Cyfrifiadureg, Prifysgol Cymru, aber.
Aberystwyth, Ceredigion, Cymru ac.
http://users.aber.ac.uk/ais uk
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Old January 11th 05, 03:01 PM posted to uk.sci.weather
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Default "Has the tsunami changed world weather forever?" (possibly more pedantry)


"Anne Burgess" wrote in message
...
"He who knows not and knows not he knows not, he is a fool - shun him;
"He who knows not and knows he knows not, he is a child - teach him;
"He who knows and knows not he knows, he is asleep - wake him;
"He who knows and knows he knows, he is a wise man - hear him!"

Anne, it seems to me there are one or two categories missing ... :-)

For instance, "he who knows and knows he knows, but seeks to
mislead by pretending to know something else ..."

pe




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