Gravity data collected during volcanic unrest period of the Svartsengi geothermal field in Iceland

The file contains free-air corrected data collected during the one-year unrest at the Svartsengi geothermal field in Iceland as a precursor the Fagradalsfjall eruption in 2021. Column 1: Name of the measurement site Column 2 and 3: Geographical coordinates of measurement sites Column 4-6. Change in elevation, free-air correction and free air gravity change from January 28-29th to April 22-28th 2020 Column 7-9. Change in elevation, free-air correction and free air gravity change from April 22-28th to October 5-6th 2020 Column 10-12. Change in elevation, free-air correction and free air gravity change from October 5-6th 2020 to February 17-18th 2021