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Field Visit to Kosi
fan-2010 session
The power
of the flow (August 2008)
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Newly
excavated channel during August 2008 avulsion
(Sitapur
village, Bihar) |
Downstream
part of the excavated channel around Birpur; this part
of the channel existed before August 2008 avulsion (re-occupation) |
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Damaged
road during August 2008 flood
(Sitapur village, Bihar) |
Damaged
house during August 2008 flood; the location is ~ 15km
downstream of the breach point at Kusaha |
Landscaping by August 2008 Avulsion and flooding
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"Sand
sea" created by large scale water spread following
the break at Kusaha in August 2008 |
Scouring
(3-4 ft deep) around Birpur |
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Giant
ripples (?) formed during the flow in August 2008 (Birpur,
India) |
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Hinterland of the Kosi River sediment supply processes:
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Timur -
Kosi confluence zone downstream of MBT (?); high energy
system due to high slopes (Barahkshetra, Nepal) |
Deformed (jointed) Quartzites around the Timur - Kosi
confluence zone
(d/s of MBT?) |
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Debris
flow from the mud- dominated intervals in Siwaliks
(Barah-
Chatra road, Nepal) |
'Small
scale faulting'. Strath surface defined by Siwalik rocks
is cut across by a steeply dipping fault (Chatra,
Nepal) |
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