I have used the Preliminary Reference Earth Model of Dziewonski and Anderson (1981) to calculate the travel time curve. This model is very robust in the sense that it is designed to fit a wide variety of data including free-oscillation,... Continue Reading →

Refer to Chapter 4 of Shearer, Introduction to Seismology. For a ray piercing through Earth, the ray parameter (or horizontal slowness) p is defined by several expressions: where u = 1/v is the slowness, θ is the ray incidence angle, T is... Continue Reading →

In the last tutorial, we have seen the basics of the Linux commands. Now, we will learn some more tools which we can use to do data processing. We will see the uses of for loop, while loop, awk command,... Continue Reading →

When we pluck a string fixed at both ends, then this will creating a standing wave. We can get some insights on the behavior of the propagating wave by considering normal modes or free oscillations of the string. A wave... Continue Reading →

Based on problem 3.7 chapter 3 of Introduction to Seismology (Shearer) (COMPUTER) In the case of plane-wave propagation in the x direction within a uniform medium, the homogeneous momentum equation (3.9) for shear waves can be expressed as ,where u... Continue Reading →

The fault plane is characterized by its normal vector and the direction of its motion is given by the slip vector. Here, we calculate the normal vector and the slip vector for a given fault geometry. The orientation of the... Continue Reading →

Sometimes, to create a cross section profile is not that easy when it comes to an Oblique projection map. Maybe, not only that, to make a cross section profile is not that easy either when it comes to various direction... Continue Reading →

We have calculated the auxiliary fault plane solution using the input of main fault solution in perl. Here, we do the same in Fortran. And we will also plot to solution to visualize the results. Fortran Code to get the... Continue Reading →