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CCNet 114/2001 - 6 November 2001
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"I read with great interest the new discovery in Iraq. I have found masses of microspherules in Swedish peat bogs in levels dating back to c. 2200 BC. These spherules are similar to spherules I have found near the Tunguska epicentre this summer. I thought that this might be something to point out to the other list members."
-- Lars Franzén, Earth Sciences Centre, Goteborg University, Sweden

"The items about a possible impact crater in southern Iraq are intriguing but such an impact by itself is, I suggest, nothing to get too excited about. If confirmed it would indicate an impactor with a diameter around 150m. The environmental effects would probably be no worse than than recent volcanic explosions - the worse of which was the 1815 Tamboro explosion that probably resulted in the "year without summer". As I understand it, with a 150m asteroid/comet the direct devastation would have extended out to a radius of about 100km and ignition from the fireball somewhat less. Moderately destructive blast wave effects and thick dust and debris would reach several hundred km. Dust might have caused some minor global cooling and perhaps (due mainly to the impact with saltwater) some temporary thinning of the ozone layer (a dip was even detected with the Tunguska event in 1908). By themselves these hardly seem reasons for collapse of several civilisations.
The possibility that this was one of many impact events, due to a bombardment by comet fragments around this time, is a different matter."
-- Michael Paine, 5 November 2001

- ><><><>< - ><><>< - ><>< - ><><>< - ><><><>< -

1. LEONID METEOR SHOWER COULD BE ONE OF BEST IN HISTORY . . .
SpaceDaily, 6 November 2001

• SUBARU APPROACHES ORIGIN OF COMETS . . .
Ron Baalke

• NEAR EARTH OBJECTS: AN OPPORTUNITY FOR ALL UK ASTRONOMY AND SPACE SCIENCE . . .
Duncan Steel

• WHAT DRIVES THE COSTS OF FLOOD DISASTERS . . .
Andrew Yee

• UK SPACE HISTORY, EDUCATION AND POLICY . . .
Dave Wright

• MORE EVIDENCE OF IMPACT EVENT 2200BC?
Lars Franzén

• WE SHOULD BE CAREFUL WITH UNCONFIRMED DATA . . .
Ian Lyon

• POSSIBLE BRONZE AGE IMPACT CRATER . . .
Michael Paine

• MULTIPLE CONGRATULATIONS . . .
Mike Darancette

• THREAT OF SMALL IMPACTORS . . .
Jens Kieffer-Olsen

...And Finally:

• HELP TO TURN PIE IN THE SKY INTO A REAL MEAL . . .
Andy Nimmo

All currently available at CCNet.

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Dan

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