Re: Effects of Thera explosion revised upward

On Mon, 28 Aug 2006 23:31:15 +0200, Hayabusa <peregrine@xxxxxxxxxxx>
wrote:

On Sun, 27 Aug 2006 21:36:56 +1200, Eric Stevens
<eric.stevens@xxxxxxxxx> wrote:


The eruption around 1470 B.C. had four distinct phases. The first was

the data I know is 1627 BCE. But that may be the acid peak in
Greenland. Which may or may not come from Thera. Do you know anything
about where the 1470 data comes from?

directing most of its energy westwards (Figure 7.4). It is estimated
that the original height of the tsunami was 46-68 m in height, and
maybe as high as 90 m. The average period between the dozen or more
peaks in the wave train was 15 minutes.
Evidence of the tsunami is found in deposits close to Santorini. On
the island of Anapi to the east, sea-borne pumice was deposited to an
altitude of 40-50 m above present sea level. Considering that sea
levels at the time of the eruption may have been 10 m lower,

The rest of what you write sounds reasonable, but where on earth did
you get the -10m MSL? Disagree 100%.


I got it from the book from which I was quoting. :-)

To go back to the beginning - the book was "Tsunami - The Underrated
Hazard" Edward Bryant, Cambridge
University Press 2001, ISBN 0 521 77244 3 and 0 521 77599 X

.... and as I quoted the sources acknowledged that the beginning of
that particular chapter were:

- based on [Yokohama 1978: Pichlet and Fridrich, 1980; Kastens and
Cita, 1981; Bryant 1991; LaMoreaux, 1995; Cita et al, 1996; Johnstone,
1997; Pararas-Carayannis, 1998c

http://tinyurl.com/lbnvl suggests that while the 10 metres may not be
exact, the general tenor of Bryant's statement in this regard may be
correct.



Eric Stevens
.