[Shake-dev] intensity maps show singular values calculated on each station

[pablo espinoza lara]

Dear Maria Fernanda,

As far as I understand, the ShakeMap program calculates the intensities based on the acceleration peaks found in the "db_dat.xml" files, on the other hand, the program pre-calculates the intensities according to the earthquake parameters ( Magnitude, depth, etc.), with these values pre-calculated paints the map of intensities, and if any station detects the earthquake (in your case the Ariguani station) will paint it according to the data of that station that are in db_dat.xml , This is the real data of the accelerometer, I attach a graph that I generated, similar to what happened to you (look to the left of my graph, near to the station "Caras").


Saludos desde Perú.

Pablo Lara
Instituto Geofísico del Perú

________________________________
De: Shake-dev <shake-dev-bounces at geohazards.usgs.gov> en nombre de Maria Fernanda Nader <mnader at sgc.gov.co>
Enviado: lunes, 8 de mayo de 2017 21:15
Para: shake-dev at geohazards.usgs.gov
Asunto: [Shake-dev] intensity maps show singular values calculated on each station

Dear all,

I am having a problem with my intensity maps. It turns, the program is plotting on top of the intensity maps some sort of singular values calculated for each station. I am not sure why is that happening and hat does it exactly mean. I am attaching a ".jpg" that probably explains better what I am trying to say. On this offshore event in northern Colombia, there is a station that registered the earthquake in the city Ariguani, and it shows a circular, singular spot on top of the actual shakemap with a lower value of intensity.
Does anybody have a clue of what the problem can be?
Cheers,
--
Maria Fernanda Nader


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