A Google Earth elevation transect is a geospatial analysis technique that extracts and visualizes terrain elevation data along a defined linear path using Google Earth's integrated digital elevation model (DEM) infrastructure. Within a GIS workflow, analysts define a transect by drawing a polyline across a geographic area of interest, prompting the platform to sample elevation values at regular intervals and render a corresponding cross-sectional profile. This process leverages Google Earth's fusion of SRTM, ASTER, and proprietary elevation datasets to deliver continuous terrain representation across diverse landscapes.

From a GIS perspective, elevation transects support critical spatial analysis tasks including slope assessment, watershed delineation, line-of-sight analysis, and infrastructure corridor planning. Geospatial professionals apply this methodology in environmental monitoring, geological surveys, civil engineering, and ecological habitat mapping. The technique enables rapid, non-destructive terrain characterization without requiring dedicated LiDAR acquisition or advanced GIS software licensing.

Practically, Google Earth elevation transects offer an accessible entry point for geospatial data exploration, allowing technical users to validate topographic models, communicate terrain complexity to stakeholders, and integrate exported elevation profiles into broader geospatial datasets for downstream mapping and analysis workflows.