The first coseismic interferogram is typically available a few hours after the first post-seismic image is acquired.
Sentinel-1 interferogram — one cycle of phase change (one color fringe) corresponds to ~2.8 cm of line-of-sight displacement (half the radar wavelength).
NISAR interferogram — one cycle of phase change (one color fringe) corresponds to ~12.1 cm of line-of-sight displacement (half the radar wavelength).
Line-of-sight displacement — positive values are motion toward the satellite, negative values motion away from it.
.grd) or GeoTIFF (.tif) format, geocoded to WGS-84 longitude/latitude, plus a Google Earth (.kmz) file combining all of a date-pair's products where available. "Ionosphere-corrected" products (NISAR only) have the ionospheric phase delay removed.
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| Track (dates) | Data | File | Size |
|---|---|---|---|
| NISAR A4(20260930-20261012) | Wrapped phase | phase_filt.tif | 17.4 MB |
| Wrapped phase (ionosphere-corrected) | phase_filt_ionofree.tif | 4.0 MB | |
| Unwrapped phase | unwrap.tif | 2.1 MB | |
| Unwrapped phase (ionosphere-corrected) | unwrap_ionofree.tif | 1.6 MB | |
| Line-of-sight displacement | los.tif | 2.1 MB | |
| Line-of-sight displacement (ionosphere-corrected) | los_ionofree.tif | 1.6 MB | |
| All products (Google Earth) | intf.kmz | 1.9 MB | |
| NISAR A76(20261005-20261017) | Wrapped phase | phase_filt.tif | 8.6 MB |
| Wrapped phase (ionosphere-corrected) | phase_filt_ionofree.tif | 2.5 MB | |
| Unwrapped phase | unwrap.tif | 1.3 MB | |
| Unwrapped phase (ionosphere-corrected) | unwrap_ionofree.tif | 1.0 MB | |
| Line-of-sight displacement | los.tif | 1.3 MB | |
| Line-of-sight displacement (ionosphere-corrected) | los_ionofree.tif | 1.0 MB | |
| All products (Google Earth) | intf.kmz | 1001.7 KB | |
| NISAR D141(20260927-20261009) | Wrapped phase | phase_filt.tif | 42.6 MB |
| Wrapped phase (ionosphere-corrected) | phase_filt_ionofree.tif | 5.0 MB | |
| Unwrapped phase | unwrap.tif | 3.1 MB | |
| Unwrapped phase (ionosphere-corrected) | unwrap_ionofree.tif | 1.4 MB | |
| Line-of-sight displacement | los.tif | 3.1 MB | |
| Line-of-sight displacement (ionosphere-corrected) | los_ionofree.tif | 1.4 MB | |
| All products (Google Earth) | intf.kmz | 3.2 MB | |
| S1 D11(20260904-20261022) | Wrapped phase | phase_filt.tif | 137.0 MB |
| Unwrapped phase | unwrap.tif | 12.7 MB | |
| Line-of-sight displacement | los.tif | 12.8 MB | |
| All products (Google Earth) | intf.kmz | 12.8 MB | |
| S1 D113(20261005-20261017) | Wrapped phase | phase_filt.tif | 156.6 MB |
| Unwrapped phase | unwrap.tif | 13.6 MB | |
| Line-of-sight displacement | los.tif | 13.6 MB | |
| All products (Google Earth) | intf.kmz | 13.0 MB |