Hi all -
A few points about the recent discussion of the climate collapse of 536 CE:
1) For some reason some of you think that volcanic eruptions and cometary dust
veils
are mutually exclusive events, and that if a volcano goes off, then no comet
passes nearby. This is not so, as the events of 1628 BCE show.
2) Note the lack of volcanic glass shard from the new ice cores. Do volcanoes
only emit sulfur? I am certain that if Dr. Abbott had found tephra, she would
have reported it, as she has other volanic glass finds from other cores.
3) Why do some of you think that sulfur is not found in any cometary cores, and
that sulfur does not occur in space, when you have troilite samples in your own
collections?
4) Besides reading my book for the accounts of impacts in the Americas
following 536 CE, some of you may want to take a look at the following essay
for notes on another related impact:
Impact And The End Of The Roman Empire In The West
http://abob.libs.uga.edu/bobk/ccc/ce082202.html
It appears Comet Encke's debris stream was fairly spread out. We don't have
data from Africa or India yet.
5) Why hasn't this volcanic particulate/cometary dust issue been resolved?
Where are the eruption dates from the volcanoes themselves? In a nut shell, and
to my absolute knowledge, having spoken with the researchers, it is because
NASA refuses to fund research on impacts, and in particular research on
cometary impact, with the research being done by others when they can find
funding. NASA coordination with NSF, USGS and others is non-existent. This is
not due to any fault of Lindley Johnson, IMO, but rather the problem lies
elsewhere.
6) This is not a trivial problem, nor a trivial hazard. In closing this note, I
am hoping that the next NASA Administrator will not avoid his responsibilities
to ensure the continued prosperity, safety, and lives of the people of the
United States.
I suppose we'll all find out Directly.
Good Hunting -
E.P. Grondine
Man and Impact in the Americas
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