The Analysis of Earthquake Rupture Length and Tsunamis Run Up Based on Information of Time Duration (Case Study: 11 April 2012’s Aceh Twin Earthquakes)

Indonesia is a region who has earthquakes and tsunami's high vulnerability. Tsunami's parameters are determined by several parameters such as magnitude, depth, and type of fault, but some earthquake's event who has large magnitude didn't cause tsunami. The purpose of this study are : (1) to calculate the time duration of earthquake to determine the direction and length of rupture and (2) to know the relationship about time duration and run up of 11 April 2011’s tsunamis. The data and methods that used in this study are the signals data from several stations of earthquake occurrence from IRIS and run up data’s from NOAA. The seismogram’s data are processed with seisgram2K's software. The results of this study are: (1) the length of rupture of first earthquake is more than the second earthquake (2) the time duration has relationship with run up of tsunamis.