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reply to post by defcon5
Its standard operating procedure of all mountaineers and expeditions to go through the biggest exit with the most potential to get the group out the fastest.
Knife, roof, out.
That bit shows me that there was a very dire threat be it real or imagined.
To this day there has been a discussion of exactly how many people were in this pass on that fateful day. However judging by words of the people involved in the search and who took the lower right picture there were definitely 8- 9 tracks of footprints left by tourists who wore almost no footwear. Their feet pressed the snow and this left a characteristic "columns" of pressed snow with a footprint on top.
Members of the group walked in a single file with a tall men walking in the back. His footprints partially covered footprints of his friends who walked in front of him. Overall the path gave an impression of organized and uneventful descent down the slope of the mountain. Several trails would deviate from the general direction, but then rejoin the group.
Other footprints were also discovered and photographed. It is hard to say if these were left by someone else or rescuers themselves.
Sure is a very high noise to signal ratio on this subject, no pun intended.*
So about the actual topic, how do we know that infrasound could not induce madness? It seems the very reason this thread was started was immediately dismissed, with no real explanation except "come on, if they could do that we'd know about it". So, on the topic of infrasound possibly causing this event and in light of the absence of radiation in the autopsy report, can anyone explain why it's not worth discussing even the possibility that infrasound could be more intense than the annoying, painful, uncanny, imperceptible, and/or mood/behavior-altering uses for which it is currently, openly (no secret, no conspiracy, just look it up) used?
*Or, as the man said, pun not removed.edit on 26-12-2013 by sepermeru because: edit button is my best friend
In the first controlled experiment of infrasound, Dr Lord and Professor Wiseman played four contemporary pieces of live music, including some laced with infrasound, at a London concert hall and asked the audience to describe their reactions to the music. The audience did not know which pieces included infrasound but 22 per cent reported more unusual experiences when it was present in the music. Their unusual experiences included feeling uneasy or sorrowful, getting chills down the spine or nervous feelings of revulsion or fear. "These results suggest that low frequency sound can cause people to have unusual experiences even though they cannot consciously detect infrasound," said Professor Wiseman, who presented his findings to the British Association science conference.
I think the infrasound frequencies hypothesized would be lower than those from a jet engine, so the experience you might need for comparison might be working in windy mountain passes.
I used to work near running jet engines all the time, which put all sorts of high and low frequencies, their sounds carry for miles, and we never had any problems like this.
Infrasound Brief Review of Toxicological Literature November 2001
Riding in automobiles exposes drivers and passengers to 1 to 20 Hz at up to 120 dB. Exposures while riding in helicopters, other aircraft, submarines, and rockets range from 1 to 20 Hz at 120 to 145 dB. In a free field, diesel engines generate frequencies of 10 to 20 Hz at sound pressure levels up to 110 dB. Jet engines, helicopters, and large rockets generate frequencies of 1 to 20 Hz at 115 to 150 dB (4). In a Finnish survey (5), infrasound levels exceeding 120 dB were found in cars and railway engines. The usual range in vehicles with closed windows was 90 to 110 dB. Infrasound sound pressure levels in aircraft cockpits and cabins ranged from 80 to 100 dB. Ships and aircraft sonic booms are other vehicular sources (1). In Japan, Okada (17) measured infrasound at 83 dB at 20 m from a running truck and 100 dB at 20 m from a running railroad carriage. Thus, persons may be subjected frequently to the annoyance of infrasound exposure if they reside in the vicinity of heavily trafficked areas, railways, airports, or rocket launch sites. Drivers, pilots, and other transportation workers are among those occupations with considerable exposure.
It is interesting that the name the indigenous people call that mountain "Kholat Syakhl" which means mountain of the dead. So, one question that would be interesting to know the answer to is, why do they call it that?
So again, I say that wind through a mountain pass has a better chance of fulfilling this requirement from your own source, than jet engines. Of course "annoyance" is probably too mild a word to describe the hypothesis in the OP, but it does sound like an extreme extension of "annoyance".
The primary effect of infrasound in humans appears to be annoyance (24-26). To achieve a given amount of annoyance, low frequencies were found to require greater sound pressure than with higher frequencies
reply to post by Astr0
But the cold doesn't explain all the injuries.
edit on 103131p://bThursday2013 by Stormdancer777 because: (no reason given)
locals? no. why would they? there would be tracks all over the place.
There is NO WAY that 10 people could stay sane in a tent
made for two !