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Observation of concentrated heavy rain in Pakistan by AVNIR-2 onboard "Daichi" (ALOS) (8)

Northwestern Pakistan in the central Asia has been seriously damaged due to floods and mudslides caused by heavy rain which had occurred continuously since end of July 2010.

The Japan Aerospace Exploration Agency (JAXA) has performed the follow-up observation to monitor the state of the damage by the Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2)* onboard the Advanced Land Observing Satellite (ALOS, "Daichi") at 15:14 (JST) or 6:14 (UTC) on September 11 and at 14:56 (JST) or 5:56 (UTC) September 13, 2010. These observations show flood damages in south of Pakistan still remains wide inundation areas.

Fig. 1 show observed images assigned band 3, 2 and 1 of AVNIR-2 as the true color composite.
Enlarged Image (left)
True color
False color
Enlarged Image (right)
True color
False color
Fig.1
Fig.1: AVNIR-2 images with 0.0 degree pointing angle acquired at 15:14 on September 11 (left) and 14:56 on September 13, 2010 (right) (JST). Yellow squares show location of Figs. 2 to 4.
(Click to view enlarged image)

Figs. 2 and 3 show enlarged images of flooded urban area, which were taken on September 11, 2010 (left) and on September 8, 2009 as before disaster (right). Figs. 2 and 3 are located at Dera Allah Yar (13 km north-west from Jacobabad) and Qubba Saida Khan (84 km south-west from Jacobabad), respectively.

These are assigned band 4, 3 and 2 of AVNIR-2 as the false color composite, therefore vegetation and flood areas can be seen clear in red and light blue colors, respectively. In comparison to before as well as after disaster, they indicate that urban area was still flooded in large area.
Fig.2
Fig.2: Enlarged images of the flooded area in Dera Allah Yar. (25 square kilometers, left: September 11, 2010; right: September 8, 2009).
(Click to view enlarged image)
Fig.3
Fig.3: Enlarged images of the swollen rivers in Qubba Saida Khan. (25 square kilometers, left: September 11, 2010; right: September 8, 2009).
(Click to view enlarged image)
Fig. 4 shows enlarged images of flooded agricultural lands by the swollen river, which were taken on September 13, 2010 (left) and on October 26, 2009 as before disaster (right). It is located at Chenab River in Kot Hara. It is assigned band 4, 3 and 2 of AVNIR-2 as the false color composite, as well as Figs. 2 and 3. Fig. 4 seemed that the bridge shown by yellow circle was flooded and river width was wider than it in before disaster.
Fig.4
Fig.4: Enlarged images at Chenab River in Kot Hara. (25 square kilometers, left: September 13, 2010; right: October 26, 2009).
(Click to view enlarged image)

JAXA plans continuous observation of this region.

* Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2):

AVNIR-2 is a visible and near infrared radiometer for observing land and coastal zones.

It provides 10-m spatial-resolution image and 70-km swath on the ground. The pointing angle of AVNIR-2 is +44 and - 44 degrees. The images taken after disaster on September 11 and 13, 2010 and before disaster on September 8 and October 26, 2009 were acquired by 0.0 degree, respectively.

Reference

2010/9/8: Observation of concentrated heavy rain in Pakistan by AVNIR-2 onboard "Daichi" (ALOS) (7).
2010/9/7: Observation of concentrated heavy rain in Pakistan by AVNIR-2 onboard "Daichi" (ALOS) (6).
2010/9/3: Observation of the concentrated heavy rain in Pakistan using PALSAR onboard "Daichi" (ALOS) (4).
2010/8/25: Observation of concentrated heavy rain in Pakistan by AVNIR-2 onboard "Daichi" (ALOS) (5).
2010/8/18: Observation of concentrated heavy rain in Pakistan by AVNIR-2 onboard "Daichi" (ALOS) (4).
2010/8/10: Emergency observation of concentrated heavy rain in Pakistan by AVNIR-2 onboard "Daichi" (ALOS) (3).
2010/8/9: Emergency observation of concentrated heavy rain in Pakistan by AVNIR-2 onboard "Daichi" (ALOS) (2).
2010/8/5: Emergency observation of concentrated heavy rain in Pakistan by AVNIR-2 onboard "Daichi" (ALOS).
JAXA EORC