ALOS-2 acquires imageries according to JAXA's basic observation plan. However, in the event of a natural disaster, emergency observations can be performed at the request of relevant organizations.
JAXA performed emergency observations on February 8, 2023 by ALOS-2 in response to the Turkey-Syria Earthquake that occurred on February 6, 2023, at the request of the Turkish Ministry of Interior's Agency for the Disaster and Emergency Preparedness (AFAD) through
Sentinel Asia and the
International Disaster Charter.
In this article, we present datasets of the imageries data obtained from pre- and post-earthquake observations that can be used for InSAR analysis.
ALOS-2 Dataset for InSAR analysis (StripMap mode)
[Dataset①]
|
■ ALOS-2 imageries specifications
Observation mode：StripMap (SM3)
Resolution：10m
Polarization：HH+HV
Off-nadir Angle：28.2°
Beam ID：F2-5
Observation Path：78
Scene ID
| Pre-disaster：Apr 6, 2022 |
Post-disaster：Feb 8, 2023 |
| (1) ALOS2424982850-220406 |
(1) ALOS2470522850-230208 |
| (2) ALOS2424982860-220406 |
(2) ALOS2470522860-230208 |
| (3) ALOS2424982870-220406 |
(3) ALOS2470522870-230208 |
| (4) ALOS2424982880-220406 |
(4) ALOS2470522880-230208 |
|
[Dataset②] ※Inland areas
|
■ ALOS-2 imageries specifications
Observation mode：StripMap (SM3)
Resolution：10m
Polarization：HH+HV
Off-nadir Angle：36.2°
Beam ID：F2-7
Observation Path：184
Scene ID
| Pre-disaster：Mar 7, 2022 |
Post-disaster：Mar 6, 2023 |
| (1) ALOS2420620700-220307 |
(1) ALOS2474440700-230306 |
| (2) ALOS2420620710-220307 |
(2) ALOS2474440710-230306 |
| (3) ALOS2420620720-220307 |
(3) ALOS2474440720-230306 |
| (4) ALOS2420620730-220307 |
(4) ALOS2474440730-230306 |
| (5) ALOS2420620740-220307 |
(5) ALOS2474440740-230306 |
| (6) ALOS2420620750-220307 |
(6) ALOS2474440750-230306 |
|
[Dataset③] ※Mediterranean seaside
|
■ ALOS-2 imageries specifications
Observation mode：StripMap (SM3)
Resolution：10m
Polarization：HH+HV
Off-nadir Angle：28.2°
Beam ID：F2-5
Observation Path：184
Scene ID
| Pre-disaster：Mar 21, 2022 |
Post-disaster：Mar 20, 2023 |
| (1) ALOS2422690700-220321 |
(1) ALOS2476510700-230320 |
| (2) ALOS2422690710-220321 |
(2) ALOS2476510710-230320 |
| (3) ALOS2422690720-220321 |
(3) ALOS2476510720-230320 |
| (4) ALOS2422690730-220321 |
(4) ALOS2476510730-230320 |
| (5) ALOS2422690740-220321 |
(5) ALOS2476510740-230320 |
| (6) ALOS2422690750-220321 |
(6) ALOS2476510750-230320 |
|
JAXA has released the results of InSAR analysis conducted using the imageries from [Dataset①].
For details, please click the link below.
https://earth.jaxa.jp/en/earthview/2023/02/14/7381/index.html
In addition to the observations in StripMap mode, JAXA also observes the area in ScanSAR mode, which is capable of capturing imageries over a wider area. The observed data is available as open and free data on JAXA's G-Portal and other sites.
https://www.eorc.jaxa.jp/ALOS/en/dataset/alos_open_and_free_e.htm
If you are interested in the observed ALOS-2 imageries introduced in this article, please enter "InSAR Analysis Dataset of Turkey Earthquake" in the inquiry details and submit your request through the
Inquiry Page.
If the number of purchase scenes meets the conditions, it is possible to apply the InSAR package price and provide it at a discount price.
