Cyclic unrest in a geothermal field as a harbinger of the Fagradalsfjall eruption, Iceland - INSAR data repository

This repository is providing the InSAR data generated from the Copernicus Sentinel-1A and 1B satellites and as published in the paper Flóvenz et al. (2022) Cyclic unrest in a geothermal field as a harbinger of the Fagradalsfjall eruption, Iceland. Nature Geosciences, NGS-2021-06-01178 We analyse deformation and seismicity for one year prior to the March 2021 Fagradalsfjall eruption in Iceland. We generate a high-resolution catalogue of 39,500 earthquakes using optical cable recordings and develop a poroelastic model to describe three pre-eruptional uplift and subsidence cycles at the Svartsengi geothermal field, 8 km west of the eruption site. We find the observed deformation is best explained by cyclic intrusions into a permeable aquifer by a fluid injected at 4 km depth below the geothermal field, with a total volume of 0.11±0.05 km3 and a density of 850±350 kg/m3. The geodetic data relevant for the publication and provided here include: 1. Displacement from ascending geometry 2. Displacement from descending geometry 3. Vertical displacement component 4. Horizontal displacement component These data are available for the following bands and dates: band date<br> 58 07-01-2020<br> 57 13-01-2020<br> 56 19-01-2020<br> 55 25-01-2020<br> 54 31-01-2020<br> 53 06-02-2020<br> 52 12-02-2020<br> 51 18-02-2020<br> 50 24-02-2020<br> 49 01-03-2020<br> 48 07-03-2020<br> 47 13-03-2020<br> 46 19-03-2020<br> 45 25-03-2020<br> 44 31-03-2020<br> 43 06-04-2020<br> 42 12-04-2020<br> 41 18-04-2020<br> 40 24-04-2020<br> 39 30-04-2020<br> 38 06-05-2020<br> 37 12-05-2020<br> 36 18-05-2020<br> 35 24-05-2020<br> 34 30-05-2020<br> 33 05-06-2020<br> 32 11-06-2020<br> 31 17-06-2020<br> 30 23-06-2020<br> 29 29-06-2020<br> 28 05-07-2020<br> 27 11-07-2020<br> 26 17-07-2020<br> 25 23-07-2020<br> 24 29-07-2020<br> 23 04-08-2020<br> 22 10-08-2020<br> 21 16-08-2020<br> 20 22-08-2020<br> 19 28-08-2020<br> 18 03-09-2020<br> 17 09-09-2020<br> 16 15-09-2020<br> 15 21-09-2020<br> 14 27-09-2020<br> 13 03-10-2020<br> 12 09-10-2020<br> 11 15-10-2020<br> 10 21-10-2020<br> 9 27-10-2020<br> 8 02-11-2020<br> 7 08-11-2020<br> 6 14-11-2020<br> 5 20-11-2020<br> 4 26-11-2020<br> 3 02-12-2020<br> 2 08-12-2020<br> 1 14-12-2020