Investigating the capabilities of multi-scale and multi-sensor data to monitor rapidly depleting groundwater resources in Delhi, India.

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The overall aim of my project is to analyse the relative capabilities of multi-sensor and multi-scale geospatial data, including in-situ observations, GRACE gravity anomalies, InSAR ground displacement data and hydrological models, to facilitate accurate monitoring and understanding of changing groundwater resources across the megacity of Delhi, India. In particular, the value of the information extracted from the various data sources, from a perspective of water management, will be investigated. This process will involve quantifying both groundwater storage change and land subsidence across the region using geospatial techniques, investigating the relationship between ground deformation, groundwater storage change and the variability of elasticity properties in the underlying aquifer system, and exploring methods to integrate data to better inform groundwater management. .