DIAS Geophysics has collected and continues to manage terrestrial gravity data In Ireland.
Since the establishment of the Geophysics Section, gravity measurements were taken at over 23,000 stations (Thirlaway 1951, Murphy 1952, 1974; , O’Reilly et al., 1996, Readman et al., 1997). The data coverage shown averages at about 4.2 stations per 10 km square, equivalent to an average spacing of about 1.55 km. The measurements have usually been made at or near to Ordnance Survey of Ireland bench marks or spot heights, and terrain corrections (rarely greater than 0.5 mGal) have been made where necessary. To view gravity station locations click here.
The overall accuracy is estimated to be about 0.2 mGal. The variation in the thickness of the overburden cover leads to uncertainty in calculating the Bouguer anomaly that in extreme cases can be up to 1.5 mGal for peat bog. The magnitude of the effect is rarely known so for simplicity the data reduction procedure in calculating the Bouguer anomaly has assumed a constant density of 2670 kg m -3 above sea-level datum.
Commercial data licence fee
€0.30 per point (for one year licence) + €250 licensing fee and €250 data preparation fee.
Multi-year licences are possible up to a maximum of 5-years, with approximately 50% reduction for each successive year so a 2 year licence is €0.45 per point, 3 year licence is €0.525 per point, 4 year licence is €0.5625 per point, and a 5 year licence is €0.60 per point.
For further details and price quotations contact geosecretary-at-cp.dias.ie. To view the agreement letter please click here.
Academic use
The gravity data can be made freely available to academic users upon request.
Murphy, T. 1952. – Measurements of gravity in Ireland: Gravity survey of Central Ireland. Geophysical Memoirs, Dublin Institute for Advanced Studies, No. 2, part 2.
Murphy, T. 1974. – Gravity Anomaly Map of Ireland. Communications of the Dublin Institute for Advanced Studies, Series D, Geophysical Bulletin No. 32.
O’Reilly, B.M., Readman, P.W. & Murphy, T. 1996. The gravity signature of Caledonian and Variscan tectonics in Ireland. Physics and Chemistry of the Earth 21, 299-304.
Readman, P.W., O’Reilly, B.M. & Murphy, T. 1997. Gravity gradients and upper crustal tectonic fabrics, Ireland. Journal of the Geological Society, London 154, 817-828.
Thirlaway, H.I.S. 1951. – Measurements of gravity in Ireland: Gravimeter observations between Dublin, Sligo, Galway and Cork. Geophysical Memoirs, Dublin Institute for Advanced Studies Ireland, No. 2, part 3.
This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
Gravity Data
DIAS Geophysics has collected and continues to manage terrestrial gravity data In Ireland.
Since the establishment of the Geophysics Section, gravity measurements were taken at over 23,000 stations (Thirlaway 1951, Murphy 1952, 1974; , O’Reilly et al., 1996, Readman et al., 1997). The data coverage shown averages at about 4.2 stations per 10 km square, equivalent to an average spacing of about 1.55 km. The measurements have usually been made at or near to Ordnance Survey of Ireland bench marks or spot heights, and terrain corrections (rarely greater than 0.5 mGal) have been made where necessary. To view gravity station locations click here.
The overall accuracy is estimated to be about 0.2 mGal. The variation in the thickness of the overburden cover leads to uncertainty in calculating the Bouguer anomaly that in extreme cases can be up to 1.5 mGal for peat bog. The magnitude of the effect is rarely known so for simplicity the data reduction procedure in calculating the Bouguer anomaly has assumed a constant density of 2670 kg m -3 above sea-level datum.
Commercial data licence fee
€0.30 per point (for one year licence) + €250 licensing fee and €250 data preparation fee.
Multi-year licences are possible up to a maximum of 5-years, with approximately 50% reduction for each successive year so a 2 year licence is €0.45 per point, 3 year licence is €0.525 per point, 4 year licence is €0.5625 per point, and a 5 year licence is €0.60 per point.
For further details and price quotations contact geosecretary-at-cp.dias.ie. To view the agreement letter please click here.
Academic use
The gravity data can be made freely available to academic users upon request.
For further details contact geosecretary-at-cp.dias.ie. To view the agreement letter please click here.
Publication References
Murphy, T. 1952. – Measurements of gravity in Ireland: Gravity survey of Central Ireland. Geophysical Memoirs, Dublin Institute for Advanced Studies, No. 2, part 2.
Murphy, T. 1974. – Gravity Anomaly Map of Ireland. Communications of the Dublin Institute for Advanced Studies, Series D, Geophysical Bulletin No. 32.
O’Reilly, B.M., Readman, P.W. & Murphy, T. 1996. The gravity signature of Caledonian and Variscan tectonics in Ireland. Physics and Chemistry of the Earth 21, 299-304.
Readman, P.W., O’Reilly, B.M. & Murphy, T. 1997. Gravity gradients and upper crustal tectonic fabrics, Ireland. Journal of the Geological Society, London 154, 817-828.
Thirlaway, H.I.S. 1951. – Measurements of gravity in Ireland: Gravimeter observations between Dublin, Sligo, Galway and Cork. Geophysical Memoirs, Dublin Institute for Advanced Studies Ireland, No. 2, part 3.
Geophysics
Latest News
Celtic Studies Summer School 2025
Precise Predictions and New Insights for the Migdal Effect
Matthew Dolan (University of Melbourne)
Constraints on Variation of the Weak Scale from Big Bang Nucleosynthesis
Geometric Semimetals and Their Simulation in Synthetic Matter
Language switcher