Md. Sabbir Hossain

M.S. researcher in Geophysics · Chengdu University of Technology

Email GitHub LinkedIn 📍 Chengdu, China

About

I study how seismic waves scatter in the heterogeneous crust, and how a hidden anomaly can be told apart from the random clutter around it. I build numerical experiments from first principles (finite-difference wave solvers, stochastic media and radiative-transfer models) and turn them into quantitative, testable observations.

My route into geophysics began in electrical engineering: a B.Eng. in Electrical Engineering & Automation, then a year maintaining the mission-critical power infrastructure of a national government data center. That background in signals, hardware and fault diagnosis shapes how I approach wave physics, and I am interested in research that connects physical modelling with sensing and signal analysis.

Wave scatteringSubsurface / GPR sensing Stochastic mediaFinite-difference modelling P/S wavefield decompositionSimulation-driven few-shot detection Power-hardware signal analysis

Research

Seismic scattering by localized anomalies in random media

M.S. research, College of Geophysics, CDUT · 2023 – present · first-author manuscript in preparation · code on GitHub

Can a localized zone of strong heterogeneity be detected inside an already-scattering crust? I built a complete simulation framework from scratch to answer this with a three-level control design: homogeneous medium → matched stochastic background → background plus anomaly. Differencing the last two isolates exactly what the anomaly adds.

+43%late coda energy behind the anomaly

+54%S-wave energy behind the anomaly

~50×growth of the P→S energy ratio with heterogeneity

0.6%energy-conservation error over 4,600+ steps

The framework combines a 4th-order velocity–stress staggered-grid solver with a convolutional PML, FFT-based von Kármán and Gaussian random media, divergence–curl P/S energy separation, and an independent Monte Carlo radiative-transfer model. Sweeping the correlation length across ka ≈ 1.5–25 maps the transition from wide-angle scattering (strong coda, strong P→S conversion) to forward scattering (travel-time delays).

Wavefield snapshots, anomaly difference field and seismograms — (a) Wavefield in a random medium containing an 8 × 8 km anomaly; (b) difference from the matched background, isolating the anomaly's scattered field; (c) seismograms with and without the anomaly.

Correlation-length series — Wavefields and seismograms for correlation lengths a = 0.3, 1 and 5 km.

Energy and S/P ratio — Total energy and E_S/E_P through time for the ε- and a-series.

Grid-side control of a distributed hybrid energy storage system

B.Eng. thesis, Southwest Petroleum University · 2021 – 2022 · published

Modelled and simulated grid-side converter control for a distributed hybrid energy storage system in MATLAB, and evaluated how it supports power quality and grid stability.

Publications & Software

M. S. Hossain et al. “P-S Wavefield Redistribution, Coda Development, and Scattering by a Localized Heterogeneous Anomaly: Controlled 2-D Fourth-Order Finite-Difference Simulations.” In preparation

M. S. Hossain. “Grid-side control technology research on the distributed hybrid energy storage system.” International Journal of Research in Advanced Engineering and Technology, 9(4):24–27, 2023. Journal

seismic-model: an open-source 2-D P-SV elastic finite-difference framework for wave scattering in random heterogeneous media (Python). Software

Education

M.S., Geophysics, Chengdu University of Technology
2023 – present

Thesis: Comparison of Full-Wave Seismic Scattering and Radiative Transfer Simulations in Random Media · Sichuan Provincial Government Scholarship
B.Eng., Electrical Engineering & Automation, Southwest Petroleum University
2018 – 2022

Ranked 5th among international students in the major · published thesis
Diploma in Engineering, Electrical Technology, Rajshahi Polytechnic Institute
2014 – 2018

Bangladesh Technical Education Board

Experience

Service Engineer, ARK Power Ltd. (ISO 9001:2015)
2022 – 2023

Operated and maintained the power infrastructure of a national government data center in Dhaka: UPS, diesel generators, automatic transfer switches, LV distribution, protection and SCADA monitoring. Fault diagnosis and load management on live systems.
Volunteer, Life Affairs Dept., International Student Association, CDUT
2024 – 2025

Supported international students with course selection, leave approvals and university notices. Named Outstanding ISA Staff Member (2025).
Campus Ambassador, Bangladesh–China Youth Student Association
2023 – 2024

Guided applicants to CDUT and organized cultural-exchange events.

Honors

Sichuan Provincial Government Scholarship, graduate excellence
2023 – 2026
Outstanding ISA Staff Member, College of International Education, CDUT
2025
Ranked 5th among international students, Electrical Engineering & Automation, SWPU
2022

Skills

Programming: Python (NumPy, SciPy, Matplotlib), C, MATLAB, LaTeX, Git, GitHub Actions
Numerical modelling: Finite-difference PDE solvers, C-PML, stochastic random fields, Monte Carlo transport, SPECFEM, PowerWorld
Signal analysis: Modern signal processing, cross-correlation and travel-time estimation, energy/coda analysis, wavefield decomposition
Electrical & hardware: Power electronics, UPS and backup power, protection and grounding, SCADA, microcontrollers, Multisim, Proteus, AutoCAD
Languages: Bengali (native) · English (fluent) · Chinese (conversational, HSK)