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
58    07-01-2020
57    13-01-2020
56    19-01-2020
55    25-01-2020
54    31-01-2020
53    06-02-2020
52    12-02-2020
51    18-02-2020
50    24-02-2020
49    01-03-2020
48    07-03-2020
47    13-03-2020
46    19-03-2020
45    25-03-2020
44    31-03-2020
43    06-04-2020
42    12-04-2020
41    18-04-2020
40    24-04-2020
39    30-04-2020
38    06-05-2020
37    12-05-2020
36    18-05-2020
35    24-05-2020
34    30-05-2020
33    05-06-2020
32    11-06-2020
31    17-06-2020
30    23-06-2020
29    29-06-2020
28    05-07-2020
27    11-07-2020
26    17-07-2020
25    23-07-2020
24    29-07-2020
23    04-08-2020
22    10-08-2020
21    16-08-2020
20    22-08-2020
19    28-08-2020
18    03-09-2020
17    09-09-2020
16    15-09-2020
15    21-09-2020
14    27-09-2020
13    03-10-2020
12    09-10-2020
11    15-10-2020
10    21-10-2020
9    27-10-2020
8    02-11-2020
7    08-11-2020
6    14-11-2020
5    20-11-2020
4    26-11-2020
3    02-12-2020
2    08-12-2020
1    14-12-2020