Simulation of the seismic wave propagation
on the tablet computer

Development of the iPad app "地震波シミュ"

Kentaro EMOTO

Geophysics, Science, Tohoku University

JpGU Meeting 2015, SSS26-18, 26 May

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Name	地震波シミュ
Accepted	30 Mar 2015
Release	1 Apr 2015
Category	Education
Size	944 KB

Simulator of the simple seismic wave propagation in 2D.

IDE: Xcode
Language: Objective-C

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iPad Air
CPU	Apple A7 1.4 GHz dual-core
Memory	1 GB

App usage

CPU: ∼180%
Memory: 80 ∼ 100MB

Intuitive, Accessible, Interactive, Simple

Complex & professional simulations → PC or Supercomputer

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Acceptable waiting time is

[Nah, 2004]

✕ Draw after the calculation

○ Draw simultaneously with the calculation

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Required calculation time for 2000 steps (20s)

10 s

20 s

30 s

(Nx, Nz) = (512, 384) → Image size: (512pt, 384pt)
dx = dz = 200m, dt = 0.01s

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Summary

I have developed an iPad app named "地震波シミュ".
Intuitive, interactive and accessible seismic wave simulator
It can be used for the education.
Non-professional programmer (such as I) can create iOS application.

Future development

Mutable topography
Tsunami