But actually it probably has a lot to do with the mechanics of the wave
itself
and the sea floor/bed around Diego Garcia itself. The wave may have
'flowed'
around Diego Garcia, but when it reached Somalia it had nowhere else to go
but
up the beach.

I watched a simulation that showed the main "wave" energy was directed
squarely
towards Sri Lanka. Probably because it was paralell to the fault line near
Indonesia.
While watching the simulation I noted that DG was not in line and quite a
bit outside
(flanked) of this main wave energy.

It's pretty simple physics.

Fluid dynamics is excruciatingly complicated.

tianli wrote:

But actually it probably has a lot to do with the mechanics of the wave
itself
and the sea floor/bed around Diego Garcia itself. The wave may have
'flowed'
around Diego Garcia, but when it reached Somalia it had nowhere else to go
but
up the beach.

I watched a simulation that showed the main "wave" energy was directed
squarely
towards Sri Lanka. Probably because it was paralell to the fault line near
Indonesia.
While watching the simulation I noted that DG was not in line and quite a
bit outside
(flanked) of this main wave energy.

It's pretty simple physics.

Fluid dynamics is excruciatingly complicated.

It's just to deep for me.

dxAce
Michigan
USA

wrote:
I talked by phone, about an hour ago, with a gentleman on DG and he
said they experienced waves 3 to 4 feet high but suffered no damage.
If the island's elevation is only 4 to 22 feet high, that makes
sense.
But why was there so much damage to the coast of Somalia, another
2000
miles further west, and no damage to DG?? Would they tell us if
there
really was damage on DG??

Hi,

I saw your intervention on the net abour the the Diego Garcia base, not
affected by the tsunami. Do you know if the base has played a role in
the warning. Did the navy there, called countries of the region, as
little islands, etc? Bye! Eric

This is on GlobalSecurity.org:
http://www.globalsecurity.org/milita...ego-garcia.htm

Initial indications are that Diego Garcia was not affected by the
Andaman Tsunami of 26 December 2004. It is located south of the tip of
India, well with in range of what the tsunami, with a max elevation of
22 and an average elevation of only 4 feet. Civilians monitoring
shortwave radio reported on rec.radio.shortwave that a female operator,
in answer to a query from an aircraft after giving weather information,
reported no ill effects from the earthquake.

Officials said the Diego Garcia Navy Support Facility, which houses
about 1,700 military personnel and 1,500 civilian contractors, suffered
no damage related to the earthquake and ensuing tsunamis. Personnel at
the facility reported no unusual activity or problems over the weekend.
Diego Garcia, the southernmost island in the Chagos Archipelago, sits
about 1,000 miles south of India and roughly 2,000 miles from the
earthquake's epicenter. Even though an earthquake like Sunday's
will radiate destructive waves in all directions, the damage caused by
the water differs greatly depending on the undersea topography.

Favorable ocean topography minimized the tsunami's impact on the
atoll. Diego Garcia is part of the Chagos Archipelago, situated on the
southernmost part of the Chagos-Laccadive Ridge. To the east lies the
Chagos Trench, a 400 mile long, underwater canyon that ranges in depth
from less than 1,00 meters below the surface to depths that plunge to
over 5,000 meters. It is one of the deepest regions of the Indian
Ocean. Diego Garcia is located to the west of Chagos Trench, which runs
north and south. The depth of the Chagos Trench and grade to the shores
does not allow for tsunamis to build before passing the atoll. The
result of the earthquake was seen as a tidal surge estimated at six
feet.


Mark Zenier wrote:
In article , dxAce
wrote:


wrote:

I talked by phone, about an hour ago, with a gentleman on DG and
he
said they experienced waves 3 to 4 feet high but suffered no
damage.
If the island's elevation is only 4 to 22 feet high, that makes
sense.
But why was there so much damage to the coast of Somalia, another
2000
miles further west, and no damage to DG?? Would they tell us if
there
really was damage on DG??

Nah, it's all a big secret to get you conspiracy kooks going!

But actually it probably has a lot to do with the mechanics of the
wave itself
and the sea floor/bed around Diego Garcia itself. The wave may have
'flowed'
around Diego Garcia, but when it reached Somalia it had nowhere else
to go but
up the beach.

It's pretty simple physics.

Yes, I dug out the Nat. Geo. World Atlas and the physical map of the
Indian Ocean shows why some areas like India and Somalia got
plastered.
The continental shelf and the shoreline are parallel to the wave
front,
so the energy got concentrated vertically. Diego Garcia and the
Chagos
have the Chagos Trench that runs east and south of DG, so the energy
could diffract around.

The surprise for me is that Broome and Northwest Australia didn't get
it hard. One description (can't remember if it was in the newspaper
or
on one of the American TV news broadcasts) said that in these
subduction
quakes, some of the seabed falls and some areas rise. So there's a
dipole effect where, for some directions, the waves cancel out.

They said Sumatra moved 100 ft. I'd hate to be a land surveyor there
using GPS. Until they recalibrate their local benchmarks, it'll be
hopeless.

Mark Zenier Washington State resident

CORRECTION TO PREVIOUS POST
This is on Deigo Garcia's official US Navy website:
http://www.dg.navy.mil/ then select Tsunami News Update at left-middle
of screen/page.


Initial indications are that Diego Garcia was not affected by the
Andaman Tsunami of 26 December 2004. It is located south of the tip of
India, well with in range of what the tsunami, with a max elevation of
22 and an average elevation of only 4 feet. Civilians monitoring
shortwave radio reported on rec.radio.shortwave that a female operator,
in answer to a query from an aircraft after giving weather information,
reported no ill effects from the earthquake.


Officials said the Diego Garcia Navy Support Facility, which houses
about 1,700 military personnel and 1,500 civilian contractors, suffered
no damage related to the earthquake and ensuing tsunamis. Personnel at
the facility reported no unusual activity or problems over the weekend.
Diego Garcia, the southernmost island in the Chagos Archipelago, sits
about 1,000 miles south of India and roughly 2,000 miles from the
earthquake's epicenter. Even though an earthquake like Sunday's
will radiate destructive waves in all directions, the damage caused by
the water differs greatly depending on the undersea topography.


Favorable ocean topography minimized the tsunami's impact on the
atoll. Diego Garcia is part of the Chagos Archipelago, situated on the
southernmost part of the Chagos-Laccadive Ridge. To the east lies the
Chagos Trench, a 400 mile long, underwater canyon that ranges in depth
from less than 1,00 meters below the surface to depths that plunge to
over 5,000 meters. It is one of the deepest regions of the Indian
Ocean. Diego Garcia is located to the west of Chagos Trench, which runs
north and south. The depth of the Chagos Trench and grade to the shores
does not allow for tsunamis to build before passing the atoll. The
result of the earthquake was seen as a tidal surge estimated at six
feet.

CORRECTION TO PREVIOUS POST
This is on Deigo Garcia's official US Navy website:
http://www.dg.navy.mil/ then select Tsunami News Update at left-middle
of screen/page.


Initial indications are that Diego Garcia was not affected by the
Andaman Tsunami of 26 December 2004. It is located south of the tip of
India, well with in range of what the tsunami, with a max elevation of
22 and an average elevation of only 4 feet. Civilians monitoring
shortwave radio reported on rec.radio.shortwave that a female operator,
in answer to a query from an aircraft after giving weather information,
reported no ill effects from the earthquake.


Officials said the Diego Garcia Navy Support Facility, which houses
about 1,700 military personnel and 1,500 civilian contractors, suffered
no damage related to the earthquake and ensuing tsunamis. Personnel at
the facility reported no unusual activity or problems over the weekend.
Diego Garcia, the southernmost island in the Chagos Archipelago, sits
about 1,000 miles south of India and roughly 2,000 miles from the
earthquake's epicenter. Even though an earthquake like Sunday's
will radiate destructive waves in all directions, the damage caused by
the water differs greatly depending on the undersea topography.


Favorable ocean topography minimized the tsunami's impact on the
atoll. Diego Garcia is part of the Chagos Archipelago, situated on the
southernmost part of the Chagos-Laccadive Ridge. To the east lies the
Chagos Trench, a 400 mile long, underwater canyon that ranges in depth
from less than 1,00 meters below the surface to depths that plunge to
over 5,000 meters. It is one of the deepest regions of the Indian
Ocean. Diego Garcia is located to the west of Chagos Trench, which runs
north and south. The depth of the Chagos Trench and grade to the shores
does not allow for tsunamis to build before passing the atoll. The
result of the earthquake was seen as a tidal surge estimated at six
feet.