Date of Image:

5/28/2021

Date of Next Image:

Unknown

Summary:

Interferometric SAR (InSAR) uses the phase differences from repeat passes over the same area to identify regions where the distance between the sensor and the earth's surface has changed. This allows for the detection and quantification of deformation or movement. This ALOS-2 co-eruptive interferogram showing the line-of-sight (LOS) fringes (12 cm/fringe). The descending track (path 77) interferogram shows the difference between May 28, 2021 and May 14, 2021. Satellite LOS is to the WNW (parallel bottom edge of interferogram) from an angle between 35-40 degrees from nadir. Interpretation is that this is the deformation due to a dike intrusion to the SE of Nyiragongo volcano (green triangle in center).

Suggested Use:

This interferogram shows permant ground movement/deformation due to the recent earthquakes. Each color contour (blue to blue) indicates 12 cm of permanent ground motion.

Satellite/Sensor:

Japan Aerospace Exploration Agency (JAXA) ALOS-2 PALSAR-2

Resolution:

30 meters; not all of the resolution is maintained by the conversion to KMZ file.

Credits:

NASA-JPL/Caltech, Paul Lundgren, JAXA

Esri REST Endpoint:

See URL section on right side of page

WMS Endpoint:

Data Download:

https://maps.disasters.nasa.gov/download/gis_products/event_specific/2021/mount_nyiragongo_eruption/alos2/

Date of Image:

5/28/2021

Date of Next Image:

Unknown

Summary:

Interferometric SAR (InSAR) uses the phase differences from repeat passes over the same area to identify regions where the distance between the sensor and the earth's surface has changed. This allows for the detection and quantification of deformation or movement. This ALOS-2 co-eruptive interferogram showing the line-of-sight (LOS) fringes (12 cm/fringe). The descending track (path 77) interferogram shows the difference between May 28, 2021 and May 14, 2021. Satellite LOS is to the WNW (parallel bottom edge of interferogram) from an angle between 35-40 degrees from nadir. Interpretation is that this is the deformation due to a dike intrusion to the SE of Nyiragongo volcano (green triangle in center).

Suggested Use:

This interferogram shows permant ground movement/deformation due to the recent earthquakes. Each color contour (blue to blue) indicates 12 cm of permanent ground motion.

Satellite/Sensor:

Japan Aerospace Exploration Agency (JAXA) ALOS-2 PALSAR-2

Resolution:

30 meters; not all of the resolution is maintained by the conversion to KMZ file.

Credits:

NASA-JPL/Caltech, Paul Lundgren, JAXA

Esri REST Endpoint:

See URL section on right side of page

WMS Endpoint:

Data Download:

https://maps.disasters.nasa.gov/download/gis_products/event_specific/2021/mount_nyiragongo_eruption/alos2/