​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The Tellus survey is a national programme to gather geochemical and geophysical data across Ireland – in other words, to examine the chemical and physical properties of our soil, rocks and water.

Tellus is undertaken by Geological Survey Ireland and is funded by the Department of the Environment, Climate and Communications. All data from Tellus is made available free of charge online.

Tellus involves two types of surveying:

airborne geophysical surveying using a low-flying aircraft. To find out where the Tellus aircraft is flying you can view the weekly flight plan here.

– ground-based geochemical surveying of soil, stream water and stream sediment. Check out where our ground survey teams are sampling here.

For more information on the Tellus survey contact the Tellus Freephone Information line on 1800 45 55 65.

​Find out more about our ground and airborne field operations, education, applications of Tellus data and guidelines and factsheets.

Tellus collects geochemical and geophysical data that will inform the management of Ireland’s environment and natural resources.

Tellus undertakes research with a range of collaborators in order to maximise the societal and economic benefits of the geochemical and geophysical data. Explore the themes to see how Tellus​ data is being used to benefit society. Soil Sampling Teams Begin Urban Geochemical SamplingThe Tellus survey soil samplers, uwill now start sampling soil in the urban areas of Galway, Limerick, Cork, and Waterford.07/02/2024 00:00:00 position available at ESRL The Earth Surface Research Lab is currently advertising for a Postdoctoral Researcher 22/01/2024 00:00:00 Article on Mapping Geoelectric Field Hazards in Ireland in Space Weather Journal01/02/2024 00:00:00 Report for Tellus G12 Soil Sampling Survey31/01/2024 00:00:00