PLEASE NOTE:
*
Subject:
Medieval references to impacts?
To:
cambridge-conference@livjm.ac.uk (Cambridge Conference)
Date sent: Fri, 15 Aug
1997 03:58:59 -0500 (CDT)
From:
pib@nwu.edu
The Cambridge conference list has been quiet recently, so I
thought I'd pass
along some possible medieval European references to impact events
which I
haven't seen referenced in this context before. Having said
that, no doubt
someone here will offer a dozen citations in which these events
were
discussed as records of potential impact events.
The first record comes from the _Anglo-Saxon Chronicle_:
A.D. 679. This year Elwin was
slain, by the river Trent, on the
spot where Everth and Ethelred
fought. This year also died St.
Etheldritha; and the monastery of
Coldingiham was destroyed by
fire from heaven.
Does "destroyed by fire from heaven" refer to an
airburst or impact?
I'm quoting from the translation by James Ingram (London, 1823),
available
online at:
http://sunsite.berkeley.edu/OMACL/Anglo/part1.html
Gregory of Tours in his _History_ (of the Franks) describes a
couple of
interesting events which might be impact-related. I'm
quoting from the
translation by Lewis Thorpe published by Penguin Books, 1974.
Gregory describes events in 580 A.D. (V.33, pages 295-296):
In the fifth year of King
Childebert's reign great floods
devasted parts of the Auvergne.
The rain continued for twelve
days and the Limage was under such a
depth of water that all
sowing had to cease. The River
Loire, the River Allier (which
used to be called the Flavaris) and the
mountain-streams which
run into this latter were so swollen
that they rose higher
above the flood-level than ever
before. Many cattle were
drowned, the crops ruined and buildings
inundated. The River
Rhone, at the spot where it meets the
Saone, overflowed its
banks and brought heavy loss to the
inhabitants, undermining
parts of the city of Lyons. When
the rains stopped, the trees
came out in leaf once more, although by
now it was September.
In Touraine this same year, one morning
before the day had dawned, a
bright light was seen to traverse the
sky and then disappear in the
East. A sound as of trees crashing
to the ground was heard throughout
the whole region, but it can hardly have
been a tree for it was audible
over fifty miles and more. In this
same year again the city of
Bordeaux was sadly shaken by an
earthquake. The city walls were in
great danger of collapsing. The entire
populace was filled with the
fear of death, for they imagined that
they would be swallowed up with
their city unless they fled. Many
of them escaped to neighboring
townships. This terrible disaster
followed them to the places where
they had sought refuge and extended even
into Spain, but there it was
less serious. Huge rocks came
cascading down from the mountainpeaks of
the Pyrenees, crushing in their wake the
local inhabitants and their
cattle. Villages around Bordeaux
were burned by a fire sent from
heaven: it took so swift a hold
that homesteads and threshing floors
with the grain still spread out on them
were reduced to ashes. There
was no other apparent cause of this
fire, so it must have come from
God. The city of Orleans blazed
with a great conflagration. Even the
richer citizens lost their all, and if
anyone managed to salvage
anything from the flames it was
immediately snatched away by the
thieves who crowded around.
Somewhere near Chartres blood poured forth
when a loaf of bread was broken in
two. At the same time the city of
Bourges was scourged by a hailstorm.
Is Gregory describing the effects of one or more
airbursts? Except for that
bloody bread, of course.
Gregory also describes events in October of 585 A.D. (VIII.24, page 455):
While I was staying in Carignan, I
twice during the night saw
portents in the sky. These were
rays of light towards the
north, shining so brightly that I had
never seen anything
like them before: the clouds were
blood-red on both sides,
to the east and the west. On a
third night these rays
appeared again, at about seven or eight
o'clock. As I gazed
in wonder at them, others like them
began to shine from all
four quarters of the earth, so that as I
watched they filled
the entire sky. A cloud gleamed
bright in the middle of the
heavens, and these rays were all focused
on it, as if it were
a pavilion the coloured stripes of which
were broad at the
bottom but became narrower as they rose,
meeting in a hood
at the top. In between the rays of
light there were other
clouds flashing vividly as if they were
being struck by
lightning. This extraordinary
phenomenon filled me with
foreboding, for it was clear that some
disaster was about to
be sent from heaven.
Is Gregory talking about an aurora? Perhaps noctilucent
clouds, possibly
airburst-induced? A few pages later Gregory goes on to say:
This same year two islands in the sea
were consumed by fire
which fell from the sky. They
burned for seven whole days,
so that they were completely destroyed,
together with the
inhabitants and their flocks.
Those who sought refuge in
the sea and hurled themselves headlong
into the deep died an
even worse death in the water into which
they had thrown
themselves, while those on land who did
not die immediately
were consumed by fire. All were
reduced to ash and the sea
covered everything. Many
maintained that all the portents
which I have said earlier that I saw in
the month of October,
when the sky seemed to be on fire, were
really the reflection
of this conflagration.
Was this an impact event, possibly accompanied by a local
impact-induced
tsunami?
We need to be careful when interpreting such events since
there is a
tendency for observers to meld unrelated phenomena that occur
near each
other in time, and therefore to assume spurious cause-and-effect
relationships. Last November's purported impact in Honduras
provides a good
contemporary example. Initial reports stated that a bright
fireball
impacted and caused a landslide, fires, and a crater. Later
reports stated
that the landslide was unrelated to the bollide. No
evidence of a crater or
any impact debris was found near the site of the landslide.
Eyewitnesses
merged these unrelated events because of the temporal
synchronicity. There
is also the natural tendency to add spurious details.
Still, I think the
accounts by Gregory are worth considering.