[data-issues] mag 9.5 bogus event in db
Tim Ahern
tim at iris.washington.edu
Wed Apr 8 12:48:44 PDT 2009
The DMC's policy is to mimic the information provided by the catalog
suppliers. If they remove bogus events
then we will as well but we do not intervene at this level.
There are other examples we are aware of as well.
Cheers
Tim
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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