WithJuv

WithJuv Doing: Geo-spatial and Remote Sensing Data Analysis >> Visualization >> Management


Offering: Consultancy || Training || Research Collaboration

23/07/2026

In my previous post, I shared a visualization of earthquake epicenters in Bangladesh spanning 104 years (1923–2026).

This time, I'm sharing a decadal animation that illustrates how earthquake activity has evolved over time.

The animation highlights the spatial distribution, frequency, and magnitude variations of earthquakes across each decade.

One noticeable trend is that earthquake epicenters have gradually become more concentrated toward the Dhaka region, with moderate-magnitude events occurring more frequently. This pattern underscores the growing seismic risk to Bangladesh's rapidly expanding urban core.

These insights emphasize the need for proactive earthquake risk reduction through evidence-based policies, improved preparedness, and interdisciplinary collaboration. Geospatial professionals, geologists, geographers, urban planners, engineers, policymakers, and disaster management experts must work together to strengthen Bangladesh's resilience against future earthquakes.

Earthquake Events in Bangladesh (1923–2026): A 104-Year OverviewRecent seismic trends show an alarming shift, earthquake...
21/07/2026

Earthquake Events in Bangladesh (1923–2026): A 104-Year Overview

Recent seismic trends show an alarming shift, earthquakes are occurring closer to densely populated urban hubs rather than remote fault zones, drastically increasing potential damage and risk to human lives.

A geospatial analysis of USGS data across Bangladesh (and a 25 km buffer) reveals 227 total earthquake events over the past century:
1. ≤ 3.9 (Minor): 16
2. 4.0 – 4.9 (Light): 166
3. 5.0 – 5.9 (Moderate): 40
4. ≥ 6.0 (Strong): 5

Recent Concern : In just the last 11 months (Sept 2025 – July 2026), 12 earthquakes were recorded (2 moderate, 10 light) with 6 centered in and around the Greater Dhaka region.

Frequent low-to-moderate tremors often serve as precursor signals for larger seismic events. To mitigate impact, we need:
1. Data-driven policies grounded in spatial hotspot mapping.
2. Updated urban planning and strict building code enforcement.
3. Collaborative research between government, private entities, and GIS professionals.
Geospatial technology is key to proactive disaster risk reduction.

আসন্ন জাতীয় সংসদ নির্বাচন ২০২৬-কে সামনে রেখে লক্ষ্মীপুর-২ (রায়পুর ও লক্ষ্মীপুর সদরের আংশিক) আসনের ইউনিয়নভিত্তিক ভোটার বি...
07/02/2026

আসন্ন জাতীয় সংসদ নির্বাচন ২০২৬-কে সামনে রেখে লক্ষ্মীপুর-২ (রায়পুর ও লক্ষ্মীপুর সদরের আংশিক) আসনের ইউনিয়নভিত্তিক ভোটার বিন্যাস নিয়ে আমাদের বিশেষ ইনফোগ্রাফিক! 🗳️

WithJuv_Elect_Week_2026 এর উদ্যোগে তৈরি এই মানচিত্রে আপনারা দেখতে পাচ্ছেন:
প্রতিটি ইউনিয়নের মোট ভোটার সংখ্যা।
নারী, পুরুষ ও হিজড়া (তৃতীয় লিঙ্গ) ভোটারদের বিস্তারিত পরিসংখ্যান। ভোটার সংখ্যার ক্রমানুসারে ইউনিয়নগুলোর তুলনামূলক গ্রাফ।

একনজরে লক্ষ্মীপুর-২ এর ভোটার তথ্য:
রায়পুর এলাকায় মোট ভোটার: ২,৫৭,৮৯৬ জন।
লক্ষ্মীপুর সদর (আংশিক) এলাকায় মোট ভোটার: ২,২৬,০৬৬ জন।
এই আসনে সর্বমোট ভোটার সংখ্যা: ৪,৮৩,৯৬২ জন।

আপনার ভোট, আপনার অধিকার। সঠিক তথ্য জানুন এবং সচেতন নাগরিক হিসেবে ভোটাধিকার প্রয়োগে উৎসাহিত হোন।

তথ্যসূত্র: বাংলাদেশ নির্বাচন কমিশন।

Lakshmipur-02 (Raipur and Lakshmipur Sadar): The Numbers Behind the Vote! The 13th National Parliament Election-2026 is ...
07/02/2026

Lakshmipur-02 (Raipur and Lakshmipur Sadar): The Numbers Behind the Vote!

The 13th National Parliament Election-2026 is approaching. Here is what you need to know about the Lakshmipur-02 constituency at a glance:

483,962 Total Voters
151 Polling Centers
944 Polling Booths

From the high-density zones of Uttar Charbangshi and Char Ruhita , the stage is set across 19 Unions.

Check the map to see your area's voter strength!

31/05/2024

The Normalized Difference Vegetation Index (NDVI) is a crucial indicator for monitoring vegetation health and assessing environmental conditions. I have created an animation showcasing the monthly NDVI of Bangladesh from 2021 to 2024 (up to May). This animation vividly illustrates several key features and patterns:

River Network and Forests: The animation highlights the river network of Bangladesh in blue and the forested areas in dark green. This clear differentiation helps in understanding the distribution and density of vegetation across the country.

Rainy Season Impact: During the rainy season, from June to November, Sylhet experiences significant rainfall, leading to flash floods. These floods can be observed in the NDVI animation as areas with sudden changes in vegetation cover, due to both the influx of water and subsequent vegetation stress or growth.

Coastal Flooding: The animation also shows large amounts of water getting stuck in the coastal areas during the rainy season. This waterlogging affects local communities, as it can disrupt daily life, agriculture, and infrastructure. The NDVI values in these regions may indicate changes in vegetation health, signaling the impact of prolonged water exposure.

Environmental Monitoring: The NDVI animation serves as a valuable tool for environmental monitoring. It helps in identifying trends, assessing the impact of seasonal changes, and planning for disaster management. By analyzing the NDVI data, we can better understand the ecological dynamics and devise strategies to mitigate adverse effects on both the environment and human populations.

17/05/2024

Upscaling the resolution of Sentinel-2 satellite imagery from 10 meters to 1 meter using the S2DR3 model. Super cool testing for Dhaka, Bangladesh.




Explore the beautiful landscape of Bangladesh by diving into the map!The LULC (Dynamic World v1) map for Bangladesh.This...
08/05/2024

Explore the beautiful landscape of Bangladesh by diving into the map!

The LULC (Dynamic World v1) map for Bangladesh.
This dataset divides the landscape into 9 distinct classes (sq. km): Tree Cover (58,382), Shrub land (8), Grassland (2,421), Cropland (74,053), Built-up (2,457), Bare/sparse vegetation (980), Permanent Water Bodies (12,671), Herbaceous Wetland (2,215).

The night-time light map reveals that Dhaka City and its surrounding areas, including most of the city's corporation zon...
05/05/2024

The night-time light map reveals that Dhaka City and its surrounding areas, including most of the city's corporation zones, are illuminated at night. Additionally, district centers and highway areas are also well-lit.

In contrast, coastal areas, the Chittagong Hill Tracts, and the Haor region of greater Sylhet exhibit minimal light during the night. This variation in light intensity across regions reflects different levels of urbanization and economic activities.

Artificial lighting at night can impact ecosystem growth, yet it is also essential for urban social security. However, excessive artificial light can disrupt natural habitats and affect wildlife behavior. Balancing the need for night-time illumination with sustainable practices is crucial for minimizing ecological impacts while ensuring public safety and urban development.




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