[data-issues] mag 9.5 bogus event in db
Rick Benson
rick at iris.washington.edu
Wed Apr 8 12:51:54 PDT 2009
Hello, Philip-
The IRIS DMC has been aware that these events populate
the catalogs, and a conscious decision was made to leave them
in place and have them altered at the source.
Thanks for the note, and since you are contacting the ISC, we
will not ask them again.
-Rick
On Apr 8, 2009, at 11:52 AM, Philip Crotwell wrote:
> Hi
>
> I suspect you just store what you are given, but thought I would point
> this out just in case. It is very unlikely that this was really a
> magnitude 9.5.
>
> 1 2006-10-09 19:06:18.0 18.974 121.117 11 9.5 MS ISCCD MAN
> MAN 249 22 LUZON, PHILIPPINE ISLANDS
>
> I looked at the ISC website and they also have the 9.5 magnitude, so
> your db is correct in that sense. I guess the ISC can argue that MAN
> (whoever that is) contributed it, and so they should publish it. But
> it seems like a little extra care should be given to really large
> magnitudes as people are often interested in the biggest earthquakes.
> As it stands now, the "biggest" earthquake in the database this decade
> is not really a very big earthquake. :(
>
> The reason I noticed this is that REV picks up on this event and so
> the biggest circle on our map is not real. I am going to manually
> reject this event in REV, so not a big deal for me, but might continue
> be for others.
>
> I will also send something to the isc.
>
> thanks,
> Philip
>
> PS There was a 9.9 in Bolivia in 1999, likely same type of issue.
> 1999-10-14 10:59:35.0 -16.559 -62.775 .1 9.9 MD ISCCD HDC HDC
> 120 8 CENTRAL BOLIVIA
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================
Rick Benson
Director of Operations
IRIS DMC
(206)547-0393 ext. 119(office)
rick at iris.washington.edu
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