Investigation of geospa tial effects on moisture dynamics in Tezpur (Assam) and Roorkee (Uttarakhand) through isotopes observa tions

Abstract

In the present paper, stable isotope (δ18O) of air moisture is used to investigate geospatial correlation in moisture variability between two stations – Tezpur (Assam) and Roorkee (Uttarakhand). The isotopic composition of air moisture has shown a good correlation in time domain. It was found that the isotopic composition of air moisture in the monsoon period is depleted in comparison to non-monsoon period which opens up a possibility of using isotopes as a tool to track movement of monsoon vapours.