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MineSeis - A MATLAB GUI Program

to Calculate Synthetic Seismograms from a Linear, Multi-shot Blast Source Model

LA-UR-98-3005
Xiaoning Yang, George Randall and D. Craig Pearson
Geophysics Group (EES-11), Los Alamos National Laboratory


Introduction

Modeling ground motions from multi-shot, delay-fired mining blasts is important to the understanding of their source characteristics such as spectrum modulation. MineSeis is a MATLAB (a computer language) Graphical User Interface (GUI) program developed for the effective modeling of these multi-shot mining explosions. The program provides a convenient and interactive tool for modeling studies.

Multi-shot, delay-fired mining blasts are modeled as the time-delayed linear superposition of identical single shot sources in the program. These single shots are in turn modeled as the combination of an isotropic explosion source and a spall source. Delays due to the delay-firing and the single-shot location differences are both taken into account in calculating the time delays of the superposition. Both synthetic and observed single-shot seismograms can be used to construct the superpositions.

The program uses MATLAB GUI for input and output to facilitate user interaction with the program. With user provided source and path parameters, the program calculates and displays the source time functions, the single shot synthetic seismograms and the superimposed synthetic seismograms. In addition, the program provides tools so that the user can manipulate the results, such as filtering, zooming, saving and creating hard copies.

Formulation
 
Program Implementation
 
Conclusion


Please direct quetions or comments to the author.