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Contributing to Sustainable Farming in Bangladesh with GNSS

  • Principal Investigator(s): Mike Steckler, Lamont-Doherty Earth Observatory, Columbia University
  • UNAVCO Staff: John Galetzka
  • Dates: July 16 – August 7, 2019
  • Location: Bangladesh
  • Funding Source: The World Bank

Written by Mike Steckler, John Galetzka, and Beth Bartel
26 March 2020

Project Summary

Farming in coastal Bangladesh relies on polders, low-lying tracts of land enclosed by earthen embankments that protect the land from tidal surges. In a dynamic deltaic environment and a changing climate, the polders are under threat. Factors influencing long-term stability of polders include subsidence, sedimentation, river migrations, flooding, storm surges, and sea level rise.

Through the project "Long Term Monitoring, Research and Analysis of Bangladesh Coastal Zone (Sustainable Polders Adapted to Coastal Dynamics)," researchers are examining these factors and the long-term management and design of the polders. The geodetic component of the project includes new continuous GNSS to monitor subsidence, co-located with Surface Elevation Tables, to ground truth InSAR measurements. Data will be incorporated into dynamic river system models at multiple scales of resolution and development of designs for sustainable polders.

UNAVCO Support

Mike Steckler and John Galetzka were assisted by students from Dhaka University (Sanju Singha, Samiul Alim, Masud Rana), faculty from Barisal University (Hasnat Jaman, Alamgir Hosain), and staff from the Institute of Water Management (Salam Sikder, Shaikh Nahiduzzaman) to install four new continuous GNSS stations, and refurbish five older ones during this particular journey to the world’s largest river delta—the Ganges-Brahmaputra-Meghna Delta.

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Last modified: 2020-03-26  09:05:58  America/Denver