​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​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 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 and ground-based geochemical surveying of soil, stream water and stream sediment.

Tellus has established a Product Development workstream in order to produce more focused, user-centric data products, the need for which has been identified through stakeholder consultation, independent reviews of Tellus and government policy. Product development is undertaken under five main themes: mineral pro​spe​ctivity, smart agriculture, environment and health, climate action and education.

To date, Tellus surveying has been completed in Northern Ireland (2004–2008) and the border region of Ireland (2011–2013). Tellus airborne surveying has been completed in the north midlands region of Ireland (2014–2015), the eastern midlands region (2015), the west of Ireland (2016–2017) across counties Limerick, north Tipperary and west Cork (2018–​2019) and most recently in south east Ireland (2019). The Tellus airborne geophysical survey has now mapped 75% of the country.​ 

The latest phase of the survey will see the aircraft flying from September 2020, until the end of the year (weather permitting) over Counties Laois, Kilkenny, Tipperary and Waterford, and neighbouring parts of Kildare, Carlow, Offaly and Cork. 

Our website is updated weekly with the planned flight schedule, you can view the weekly flight plan here.

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. Outgoing to the US, 2021 call for applicationsGSI is pleased to continue our partnership with Fulbright Ireland and announce the current call for incoming Scholars and Students. The Fulbright-GSI awards offer travel and subsistence funding (this does not include salaries) for Irish based researchers to be hosted by US institutes to carry out research and develop trans-Atlantic partnerships. 20/10/2020 23:00:00 Airborne Survey takes off for 2020The next phase of the Tellus Survey – a nationwide programme of Geological Survey Ireland – will take off over southern and central counties of Ireland in the comings days06/09/2020 23:00:00 paper published on innovation in adon mapping, adding value to legacy airborne radiometric data22/09/2020 23:00:00 Research Coordination Group 2019 Annual Report28/06/2020 23:00:00