Preliminary Early Report on the 46km W of Illapel, Chile tsunami
Laboratory of Remote Sensing and Geoinformatics for Disaster Management,
International Research Institute of Disaster Science, Tohoku University

Introduction

On 09/16/2015 22:54:33 (UTC) a Mw 8.3 magnitude earthquake occurred.

Preliminary Tsunami simulation results

Updated at Thu Sep 17 18:03:48 2015 (JST)

Initial conditions

Latitude: -31.58 deg

Longitude: -71.75 deg

Focal Depth: 12.00 (km)

Estimated Magnitude: 8.3

Parameters for simulation. Estimated from Papazachos(2004)

Length: 290.32 (km)

Width: 107.37 (km)

Slip: 3.40 (m)

The star shows the location of the epicenter. Click on the image to enlarge.

Propagation simulation

Tsunami numerical modeling is performed by using linear shalllow water theory on spherical coordinates with bathymetry/topography grid data of 5 arc-min from GEBCO.

Governing Equation : Linear Shallow Water Equations

Numerical Scheme : Leap-frog Finite Difference Method

Spatial Grid Size : 5 arc-min

Tsunami propagation

Maximum inundation heights

Click on the image to enlarge