ANALISIS PARAMETER ELASTISITAS BATUAN DAERAH SUMATERA BARAT DENGAN METODA WADATI UNTUK DATA GEMPABUMI 1995 SAMPAI 2005

Abstract

The elasticity parameters analysis is based on earthquake data West Sumatera in 1995 till 2005 at SPS-3 BMG Padang panjang through Wadati method. In the Wadati diagram is used the plot of arrival time earthquake wave (P-S) versus absolute time of P arrivals of station. (V_p/V_s =1.66), Poison ratio (σ = 0.19), Modulus bulk (К = 4.89 10­­¹⁰ Pa), Rigiditas (µ = 3.52 10¹⁰ Pa). From analysis data result is estimated that the dominan rock as earth crust layer in West Sumatera are Granit and Basalt.

Keywords: Elasticity, rock, earthquake, wadati