Land subsidence in Ho Chi Minh city risks and challenges for sustainable development of Ho Chi Minh city

Abstract

Land subsidence is a common geological hazard in the world and seriously impacts sustainable urban development, especially in important cities such as Ho Chi Minh City. The article presents an overview of the authors’ results of land subsidence research in Ho Chi Minh City from 2006 to 2020 using InSAR analysis techniques. The research results show that the current average subsidence rate across the city is about 2-5cm per year. Particularly in areas with weak geology and concentrated areas such as commercial projects, the subsidence rate can be up to 7 to 8cm per year. Thereby, the group of authors proposes that Ho Chi Minh City needs to build a land subsidence simulation and forecasting information system to support decision-making to help the government have quick, appropriate, and accurate solutions, improve management capacity, contribute to effective urban management, and adapt to climate change and sustainable development.