Finding Tiny Earthquakes by Their Fingerprints
A three-station seismic matched-filter experiment shows how repeating waveform shapes reveal small earthqua...
Utpal Kumar, PhD
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- 151+ Posts
- 12 Topics
- Oct 2026 Updated
What Happens When You Open a Website? TCP, TLS, and HTTP Explained
A simple shop-and-courier analogy explains how TCP delivers data, TLS protects it, and HTTP gives a website...
Recent posts
Recent technical articles on seismic analytics, scientific computing, numerical modeling, and production data workflows.
Numerical tests for seismic resolution (codes included)
Seismic resolution and fidelity are the two important measures of the quality of the seismic record and the seismic images. Seismic resolution quantifies the...
Locating earthquakes using geiger’s method (codes included)
Simple earthquake location problem and its solution using Geiger’s method
Exploratory factor analysis (codes included)
Factor Analysis is an exploratory data analysis method used to search influential underlying factors or latent variables from a set of observed variables
Working with obspy and basemap (codes included)
This post is aimed to resolve the issues regarding the conflicts of using obspy and basemap libraries together.
Time series analysis in geophysics (codes included)
Time-series analysis is essential in most fields of science, including geophysics, economics, etc. Most of the geophysical data comes in a time-series format...
Gmt tutorial for beginners (codes included)
The Generic Mapping Tools is widely used across Earth and Planetary and other fields of studies to process data and generate high-quality illustrations. This...
Getting started with obspy: downloading waveform data (codes included)
Obspy is an open-source Python framework developed for the processing of seismological data. In this post, I will introduce how to use Obspy along with some ...
Simple wave modeling and hilbert transform in matlab (codes included)
We demonstrate how to model a simple wave, obtain its frequencies, apply Hilbert transform, and perform edge detection
Writing netcdf4 data using python (codes included)
Create a reproducible NetCDF file in Python with dimensions, coordinate variables, units, missing values, compression, and correctly stored times. Includes c...
Time series analysis in python: filtering or smoothing data (codes included)
In this post, we will see how we can use Python to low-pass filter the 10 year long daily fluctuations of GPS time series. We need to use the “Scipy” package...
How to insert equation numbering in ms word
It is essential to insert equation numbers in your thesis and/or any scientific paper. In this post, I will show you some of the easiest ways to insert equat...
Reading netcdf4 data in python (codes included)
Read a NetCDF file with Python, inspect its dimensions and metadata, select a small region, handle missing values, and decode time coordinates. Includes a re...
Writing scientific papers in ulysses
Ulysses is a natural, freestyle way of writing. If you got any idea, just write it down, worry about the format and other things when you’re done. Don’t let ...
Pygmt: high-resolution topographic map in python (codes included)
A hands-on tutorial on plotting a high-resolution topographic map in Python with PyGMT — built up one layer at a time, with interactive checks.
Numerical tests for seismic resolution (codes included)
Seismic resolution and fidelity are the two important measures of the quality of the seismic record and the seismic images. Seismic resolution quantifies the...
Locating earthquakes using geiger’s method (codes included)
Simple earthquake location problem and its solution using Geiger’s method
Exploratory factor analysis (codes included)
Factor Analysis is an exploratory data analysis method used to search influential underlying factors or latent variables from a set of observed variables
Working with obspy and basemap (codes included)
This post is aimed to resolve the issues regarding the conflicts of using obspy and basemap libraries together.
Time series analysis in geophysics (codes included)
Time-series analysis is essential in most fields of science, including geophysics, economics, etc. Most of the geophysical data comes in a time-series format...
Gmt tutorial for beginners (codes included)
The Generic Mapping Tools is widely used across Earth and Planetary and other fields of studies to process data and generate high-quality illustrations. This...
Getting started with obspy: downloading waveform data (codes included)
Obspy is an open-source Python framework developed for the processing of seismological data. In this post, I will introduce how to use Obspy along with some ...
Simple wave modeling and hilbert transform in matlab (codes included)
We demonstrate how to model a simple wave, obtain its frequencies, apply Hilbert transform, and perform edge detection
Writing netcdf4 data using python (codes included)
Create a reproducible NetCDF file in Python with dimensions, coordinate variables, units, missing values, compression, and correctly stored times. Includes c...
Time series analysis in python: filtering or smoothing data (codes included)
In this post, we will see how we can use Python to low-pass filter the 10 year long daily fluctuations of GPS time series. We need to use the “Scipy” package...
How to insert equation numbering in ms word
It is essential to insert equation numbers in your thesis and/or any scientific paper. In this post, I will show you some of the easiest ways to insert equat...
Reading netcdf4 data in python (codes included)
Read a NetCDF file with Python, inspect its dimensions and metadata, select a small region, handle missing values, and decode time coordinates. Includes a re...
Writing scientific papers in ulysses
Ulysses is a natural, freestyle way of writing. If you got any idea, just write it down, worry about the format and other things when you’re done. Don’t let ...
Pygmt: high-resolution topographic map in python (codes included)
A hands-on tutorial on plotting a high-resolution topographic map in Python with PyGMT — built up one layer at a time, with interactive checks.