Floods in Uttarakhand explained

The National Remote Sensing Centre under ISRO has released some interesting satellite images that could possibly explain the devastation in Uttarakhand

The before and after pictures below are self-explanatory. The post-flood image on Bhuvan (ISRO'a geoportal) was acquired on 21 June, 2013. Zooming into the Kedar valley area highlights the disturbances and flooding that have occurred north of the region, including the emergence of a new stream (number 3 in the image)  which has cut across a green patch. The water brought down a lot of debris towards Kedarnath and further down into the Mandakini river, causing the major disaster. This is an initial assessment; other parameters such as rainfall data and terrain will need to be examined for further analysis.

Kedar valley's landscape changes

kedarnath

The website of National Remote Sensing Centre has uploaded some relevant satellite images too. The first image (Resourcesat-2 AWiFS Image of June 1, 2013) of the area acquired on June 1, 2013 shows some snow covered areas in the upper reaches of Himalaya. This was well before the rains hit.

Snow indication

image

The second image (Resourcesat-2 AWiFS Image: June 21, 2013) dated June 21, which was acquired after the event, clearly shows that the area under snow has increased substantially. This suggests that there would have been heavy rainfall in lower areas, including the Kedar valley and other part of Uttarakhand, leading to the floods.

image

Kedarnath's location

 

 

This 3D video of the Himalayan region shows the terrain of Kedar valley. 




 

 

  • It is really a tragedy. Hope

    It is really a tragedy. Hope all come safe from that flooded area

    Posted by: Anonymous | 2 years ago | Reply
  • National Remote Sensing

    National Remote Sensing Centre under ISRO has updated the above images with additional information in their website now

    Posted by: Anonymous | 2 years ago | Reply
  • A very trivial study! ICIMOD

    A very trivial study! ICIMOD has a much better analysis with suggestions for the future.

    Posted by: Anonymous | 2 years ago | Reply
  • What is shown in Down to

    What is shown in Down to Earth is minimal. One should go to BHUVAN website of NRSC,Hyderabad and the MOSDAC website of SAC, Ahmedabad to get an understanding of the inputs given by ISRO. Infact, MOSDAC has given the forecast of Cloud burst on June 16th with places identified. ISRO has also enabled the satellite phones for helping NDRF. ICIMOD site is good. They have put the inputs from NOAA, and TRMM besides the field photos.

    Posted by: Anonymous | 2 years ago | Reply
  • very well explained the whole

    very well explained the whole analysis...nice work

    Posted by: Anonymous | 2 years ago | Reply
  • Excellent analysis on the

    Excellent analysis on the subject. Dr.A.Jagadeesh Nellore(AP),India

    Posted by: Anonymous | 2 years ago | Reply
  • Very nicely explained.

    Very nicely explained.

    Posted by: Anonymous | 2 years ago | Reply
  • very sufficient expaination.

    very sufficient expaination. But a well reason is differnt from this reason.

    Posted by: Anonymous | 2 years ago | Reply
  • It's very sad news that alot

    It's very sad news that alot of lives destroyed. My Uttarakhand is almost destroyed. May god bless all people. sunita ajay

    Posted by: Anonymous | 2 years ago | Reply
  • Thanks allot, you explained

    Thanks allot, you explained it very nicely and its makes my project easy over this tragedy.

    Posted by: Anonymous | one year ago | Reply
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