| Hydrogen Bomb Underground Test Detonation - Project Cannikin |
 |
Credit goes to "Atomic Journeys - Welcome To
Ground Zero" for this video-sequence.
Keep comments civil.
______________
Thanks to PanzerStephenwolf and MegaJaMs for
providing me with more accurate information
about this video. :) Thanks.
And I can't promise that the video
information that's posted here is 100%
accurate either. Please have that in mind.
(Wikipedia can't be used as a definite
reference anyway)
First: This is detonated at least 6000 feet
into the ground (roughly 2000 meters).
"This footage is from Project Cannikin, which
was merely a proof-test for the 5 megaton
warhead to be used on the Spartan missile
system. Researchers were fearful of such a
large device being detonated underground, so
the testing was moved to way out in the
middle of nowhere on the Amchitka penninsula
in Alaska.
The effect on the ground was necessary, and
predicted, to see its pulse effect."
"The blast registered a 7.0 on the Richter
scale and caused a subsidence crater over a
mile wide and 60 feet deep, which filled with
water and became the largest lake on the
island. Rockfalls, containing over 46,000
square yards of material, smothered
intertidal marine life. Nearly three hundred
deceased rock greenling fish were found
offshore, and subsequent catches of rock sole
declined substantially
. The remains of over 10,000 three-spined
sticklebacks and 700 Dolly Varden were found
in the island's lakes, streams, and ponds.
Perhaps 1,000 sea otters were killed, their
skulls fractured by the force of the blast
driving their eyeballs through the bones
behind their sockets. Harlequin ducks were
found with their backs broken and their legs
driven into their bodies by the force of the
explosion."
And should people decide to post "junk
comments" (which I personaly will determine),
said comment will be removed without
informing the author. Either you like it, or
you don't. Your problem.
Tags : Hydrogen Bomb Underground test Detonation Project Cannikin |
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Affichage : 476456
Durée : 46 s |
| Nuclear Weapons Test-Cannikin-5mt |
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Credit Must Go To Peter Kuran
Producer/Director For this footage.
Cannikin was detonated on 6 November 1971.
The announced yield was "less than five"
megatons -- the largest underground nuclear
test in US history. (Estimates for the
precise yield range from 4.4 Mt to 5.2Mt.)
The ground lifted 20 feet, caused by an
explosive force equivalent almost 400 times
the power of the Hiroshima bomb. Subsidence
and faulting at the site created a new lake,
over a mile wide. The explosion caused a
seismic shock of 7.0 on the Richter scale,
causing rockfalls and turf slides of a total
of 35,000 square feet.Though earthquakes and
tsunamis predicted by environmentalists did
not occur, a number of small tectonic events
did occur in the following weeks, thought to
be due to the interaction of the explosion
with local tectonic stresses.
Amchitka is a volcanic, tectonically unstable
island in the Rat Islands group of the
Aleutian Islands in southwest Alaska.
Amchitka was selected by the United States
Atomic Energy Commission to be the site for
underground detonations of nuclear weapons.
Three such tests were carried out: Long Shot,
an 80 kiloton blast in 1965; Milrow, a 1
megaton blast in 1969; and Cannikin in 1971
— at "under 5 megatons", the largest
underground test ever conducted by the United
States. The tests were highly controversial,
with environmental groups fearing that the
Cannikin explosion, in particular, would
cause severe earthquakes and tsunamis.
Though performed as part of the Nuclear
Weapons Testing Program, "[the] purpose of
the Milrow test was to test an island, not a
weapon." It was a "calibration shot",
intended to produce data from which the
impact of larger explosions could be
predicted, and specifically, to determine
whether the planned Cannikin shot could be
performed safely. It was detonated on 2
October 1969, with an approximate yield of 1
to 1.2 megatons.
The shockwave reached the surface with an
acceleration of over 35g, causing a dome of
the earth's surface, approximately 3km in
radius, to rise about 5m. The blast "turned
the surrounding sea to froth" and "forced
geysers of mud and water from local streams
and lakes 50 feet into the air" A "surface
collapse feature," also known as a subsidence
crater, was formed by material collapsing
into the cavity formed by the explosion.
Tags : COLD WAR NUKES NUCLEAR WEAPONS ATOMIC BOMB TESTING SOVIET Missle history physical science social political |
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Affichage : 8251
Durée : 134 s |
| Project Cannikin Review |
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0800041 - Project Cannikin Review - 1971 -
13:00 - Color - This video reviews Project
CANNIKIN, a nuclear test conducted on
Amchitka Island, Alaska, at 11:00 a.m.,
Bering Standard Time, on November 6, 1971.
CANNIKIN, a slightly less-than-five-megaton
device, was the largest underground nuclear
test conducted in the United States. CANNIKIN
was conducted to proof test a warhead for the
Spartan missile, a Safeguard Ballistic
Missile Defense Program.
The video shows the nuclear device and
instrumentation canister being lowered into
the shaft, detonation sequences, and test
effects. A long-range view of water
turbulence after the detonation is shown, but
no tsunami or large ocean wave was observed
or recorded. Numerous ground shock waves are
shown at normal speed and as seen by
high-speed, slow-motion cameras located at
various sites on the island. Surface effects
at ground zero and other island locations
were filmed one day after the test.
Approximately 38 hours after the test, a
subsidence crater, approximately 1.5 miles in
diameter and 55 feet deep, began to form.
Many scenes in the video have no sound
intentionally; no material was deleted.
The three underground nuclear tests conducted
on Amchitka Island, Alaska, were as follows:
LONG SHOT, October 29, 1965, shaft, Vela
Uniform Project, approximately 80 kilotons
MILROW October 2, 1969, shaft, weapons
related, approximately 1 megaton (Mt)
CANNIKIN, November 6, 1971, shaft, weapons
related, less than 5 Mt
Tags : Project Cannikin Review Amchitka Island Alaska Safeguard Ballistic Missile Defense nuclear |
|
Affichage : 4292
Durée : 28 s |
| Nuclear Weapons Test-Milrow-1mt |
 |
Amchitka is a volcanic, tectonically unstable
island in the Rat Islands group of the
Aleutian Islands in southwest Alaska.
Amchitka was selected by the United States
Atomic Energy Commission to be the site for
underground detonations of nuclear weapons.
Three such tests were carried out: Long Shot,
an 80 kiloton blast in 1965; Milrow, a 1
megaton blast in 1969; and Cannikin in 1971
— at "under 5 megatons", the largest
underground test ever conducted by the United
States. The tests were highly controversial,
with environmental groups fearing that the
Cannikin explosion, in particular, would
cause severe earthquakes and tsunamis.
Though performed as part of the Nuclear
Weapons Testing Program, "[the] purpose of
the Milrow test was to test an island, not a
weapon." It was a "calibration shot",
intended to produce data from which the
impact of larger explosions could be
predicted, and specifically, to determine
whether the planned Cannikin shot could be
performed safely. It was detonated on 2
October 1969, with an approximate yield of 1
to 1.2 megatons.
The shockwave reached the surface with an
acceleration of over 35g, causing a dome of
the earth's surface, approximately 3km in
radius, to rise about 5m. The blast "turned
the surrounding sea to froth" and "forced
geysers of mud and water from local streams
and lakes 50 feet into the air" A "surface
collapse feature," also known as a subsidence
crater, was formed by material collapsing
into the cavity formed by the explosion.
Credit Must Go To Peter Kuran
Producer/Director For this footage.
Tags : COLD WAR NUKES NUCLEAR WEAPONS ATOMIC BOMB TESTING SOVIET Missle history physical science social political |
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Affichage : 2534
Durée : 59 s |
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