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Civil Engineering/location of earthquake?

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Question
dear Dr esmailzadeh.
why We'll drawing three circles to find the location of an earthquake? why three circles?
regards .
behzad .

Answer
sieismic center identification
sieismic center identi  
Dear Behzad

Each seismological center can estimate a distance from the center for earthquake center. One circle will give you a location on a circle , 2 circles will give you a lenz and 3 circles will give you an almost tiangle . Then you need at least 3 centers to calculate the very location of the earthquake. Please take a look at picture I sent you.

Regards
BEH

Civil Engineering

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Babak Esmailzadeh Hakimi

Expertise

I can answer questions in Structural Engineering, Earthquake Engineering, Project Management and Project Control topics!

Experience

I am experienced in the area of earthquake engineering in electrical power industry, i.e. Lifeline Earthquake Engineering. My focus has been on structural seismic design of power installations. Recently I have got involved in project management in the category of constructional engineering.

Organizations
Sinam Consulting Engineers Co.

Education/Credentials
Bs degree in Civil Engineering from Ferdowsi University ,1988, Mashhad Iran, Ms degree in Earthquake Engineering, Sharif University of Technology, 1993, Tehran, Iran

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