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Geophysics

Geophysics

​Geophysical data and maps include data from the Tellus project (magnetic, electromagnetic, radiometric data) and other sources​ (2006 Joint Airborne Geoscience Capability pilot studies and 1979-1981 Hunting Geology and Geophysics Ltd.).

Airborne surveys collect magnetic, radiometric and electromagnetic data. Data are available in merged packages of all the Tellus phases or individually as survey blocks are completed.

​​​​​TypeDescription
Magnetic Data Airborne geophysical magnetic intensity data (in nT) collected at 10Hz at a nominal survey altitude of 60m and a line spacing of 200m.
Radiometric DataAirborne geophysical Gamma-Ray data (including Total Counts (cps), Potassium (%), equivalent Thorium (ppm) and equivalent Uranium (ppm)) collected at 1Hz at a nominal survey altitude of 60m and a line spacing of 200m.
Electromagnetic DataAirborne geophysical frequency domain electromagnetic data (four-frequencies: 912, 3005, 11962 and 24510 Hz, in-phase and quadrature EM responses and resistivity transforms) collected at 1Hz at a nominal survey altitude of 60m and a line spacing of 200m.

Tellus 2019 Merged areas of Tellus phases

Tellus 2019 A6 block (West Cork)

Tellus 2019 A5 block (Limerick)

Tellus 2018 A4 block (Donegal)

Tellus 2018 A3 block (Mayo)

Tellus 2017 A2 block (Galway, including parts of Mayo, Tipperary and Offaly)

Tellus 2016 Waterford (Waterford, parts of southern Tipperary and Kilkenny)

Tellus 2016 A1 block (Meath, Kildare, Offaly, rural Dublin and parts of Laois, Wicklow)

Tellus 2015 North Midlands (Roscommon, Longford, Westmeath)

Tellus 2013 Tellus Border (Donegal, Sligo, Leitrim, Cavan, Monaghan, Louth)

2006 - Joint Airborne Geoscience Capability (JAC) pilot studies (Cavan-Monaghan, Silvermines and Castleisland)

1979-1981 Hunting Geology and Geophysics Ltd (Central Ireland)

 

 

Tellus 2019: Merged areas of Tellus phases

​​​​​DataAccess

​Merged areas of all Tellus phases to date, including Tellus Border, Tellus North Midlands, blocks A1, A2, A3, A4 and A5.

Tellus Merge 2019 geophysical technical report (16.7MB)

Tellus Merge 2019 data release notes

Magnetic data

Tellus magnetic merged data XYZ (629.9 MB)
Tellus magnetic merged grd, tiff and gxf (978.9 MB)

​Radiometric dataTellus radiometric merged data XYZ (108.7 MB)
Tellus radiometric merged grd, tiff and gxf (981.9 MB)
​Electromagnetic data

​Tellus electromagnetic 2F merged data XYZ (762.4 MB)
Tellus electromagnetic 2F merged grd, tiff and gxf (489.1 MB)

Tellus electromagnetic 4F merged data XYZ (806.4 MB)
Tellus electromagnetic 4F merged grd, tiff and gxf (540.4 MB)

Map Viewerlink to online viewer (select either magnetic, radiometric or electromagnetic tab)
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Tellus 2019: A6 block (West Cork)

​​​​​DataAccess

​A6 block: West Cork

Tellus A6 block geophysical technical report (12.6 MB)

Tellus A6 block data release notes

Magnetic Data

Tellus A6 magnetic data XYZ (41.9 MB)
Tellus A6 magnetic grd, tiff and gxf (34.7 MB)

Radiometric Data

Tellus A6 radiometric data XYZ (10.3 MB)
Tellus A6 radiometric grd, tiff and gxf (45.2 MB)

Electromagnetic Data

Tellus A6 electromagnetic data XYZ (163.6 MB)
Tellus A6 electromagnetic grd, tiff and gxf (80.7 MB)

​Map Viewerlink to online viewer (select either magnetic, radiometric or electromagnetic tab)
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Tellus 2019: A5 block (Limerick)

​​​​​DataAccess

​A5 block: Limerick

Tellus A5 block geophysical technical report (11.1MB)

Tellus A5 block data release notes

Magnetic DataTellus A5 magnetic data XYZ (85.4 MB)
Tellus A5 magnetic grd, tiff and gxf (53.6 MB)
Radiometric DataTellus A5 radiometric data XYZ (18.2 MB)
Tellus A5 radiometric grd, tiff and gxf (78.3 MB)
Electromagnetic DataTellus A5 electromagnetic data XYZ (317.1 MB)
Tellus A5 electromagnetic grd, tiff and gxf (130.8MB)
​Map Viewerlink to online viewer (select either magnetic, radiometric or electromagnetic tab)
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Tellus 2018: A4 block (Donegal)

​​​​​DataAccess

​A4 block: Donegal

Tellus A4 block geophysical technical report (28MB)

Magnetic Data

Tellus A4 Donegal magnetic data XYZ (121 MB)

Radiometric Data

Tellus A4 Donegal radiometric data XYZ (18 MB)

Electromagnetic Data

Tellus A4 Donegal electromagnetic data XYZ (140 MB)
​Map Viewerlink to online viewer (select either magnetic, radiometric or electromagnetic tab)
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Tellus 2018: A3 block (Mayo)

​​​​​DataAccess

​A3 block: Mayo

Tellus A3 block geophysical technical report (28MB)

Magnetic Data

Tellus A3 Mayo magnetic data XYZ (161 MB)

Radiometric Data

Tellus A3 Mayo radiometric data XYZ (26 MB)

Electromagnetic Data

Tellus A3 Mayo electromagnetic data XYZ (204 MB)
​Map Viewerlink to online viewer (select either magnetic, radiometric or electromagnetic tab)
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Tellus 2017: A2 block (Co Galway, including parts of Mayo, Tipperary and Offaly)

​​​​​DataAccess

​A2 block: Co Galway, including parts of Mayo, Tipperary and Offaly

Tellus A2 block Galway area contractor technical report (17 MB)

Magnetic Data

Tellus A2 Galway magnetic data (532 MB)
Radiometric DataTellus A2 Galway radiometric data (72 MB)
Electromagnetic DataTellus A2 Galway electromagnetic data (1.1 GB)
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Tellus 2016: Waterford (Waterford, parts of southern Tipperary and Kilkenny)

​​​​​DataAccess

​Waterford, parts of southern Tipperary and Kilkenny

Waterford contractor technical report (22 MB)

Magnetic DataWaterford magnetic data (89 MB)
Radiometric DataWaterford radiometric data (10.8 MB)
Electromagnetic DataWaterford electromagnetic data (156 MB)
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Tellus 2016: A1 block (Meath, Kildare, Offaly, rural Dublin and parts of Laois, Wicklow)

​​​​​TypeSource

​A1 block: Meath, Kildare, Offaly, rural Dublin and parts of Laois, Wicklow

Tellus A1 block geophysics technical report (14.7 MB)

Tellus A1 block contractor technical report (9.5 MB)

Magnetic DataTellus A1 magnetic data (473 MB)
Radiometric DataTellus A1 radiometric data (54MB) - revised 24/10/2016
Electromagnetic DataTellus A1 electromagnetic data (742 MB)
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Tellus 2015: North Midlands (Roscommon, Longford, Westmeath)

​​​​​TypeSource

​Roscommon, Longford, Westmeath

Tellus North Midlands geophysics technical report (7.9 MB)

Magnetic DataTellus North Midlands magnetic data (428 MB)
Radiometric DataTellus North Midlands radiometric data (59 MB)
Electromagnetic Data

Tellus North Midlands electromagnetic data (984 MB)

Tellus North Midlands CDT data (359 MB)

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Tellus 2013: Tellus Border (Donegal, Sligo, Leitrim, Cavan, Monaghan, Louth)

​​​​​DataAccess

​Donegal, Sligo, Leitrim, Cavan, Monaghan, Louth

Tellus Border geophysics technical report (10.8 MB)

Magnetic DataTellus Border magnetic data (249 MB)
Radiometric DataTellus Border radiometric data (Ascii.xyz, 34.3 MB)
Electromagnetic DataTellus electromagnetic data (220 MB)
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2006 - Joint Airborne Geoscience Capability (JAC) pilot studies

​​​​​DataAccess

​Cavan-Monaghan, Silvermines and Castleisland

Airborne geophysical survey

Pilot studies 2006 report (35 MB)

Magnetic Data

Castleisland magnetic data (45 MB)

Cavan-Monaghan magnetic data (54 MB)

Silvermines magnetic data (7.3 MB)

Radiometric Data

Castleisland radiometric data (3.7 MB)

Cavan-Monaghan radiometric data (4 MB)

Silvermines radiometric data (678 KB)

Electromagnetic Data

Castleisland electromagnetic data (22 MB)

Cavan-Monaghan electromagnetic data (33 MB)

Silvermines electromagnetic data (4 MB)

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1979-1981 Hunting Geology and Geophysics Ltd

​​​​​DataAccess

​Central Ireland

Low resolution magnetic survey

Geophysical technical report- Hunting Geology and Geophysics Ltd (6 MB)

Magnetic Data

Hunting Geology and Geophysics Ltd magnetic data (19 MB)

Note: This low resolution data was collected with variable specifications (1-2km line spacing) and limited documentation, see associated report for details

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