Floods in Karnataka during 2009 : A synoptic study
DOI:
https://doi.org/10.54302/mausam.v63i2.1396Keywords:
Monsoon, Floods, Synoptic, Off-shore troughAbstract
Karnataka a State in south peninsular India receives 73% of its annual rainfall during southwest
monsoon season. Because of the complex physiographical features, the rainfall pattern over the State shows large spatial
variation from 50 to 350 cms. The coefficient of interannual variation of the monsoon rainfall is about 15% over coastal
Karnataka (CK) and between 20-30% over interior Karnataka. The precipitation over this State is mainly dominated by
semi permanent systems like off shore trough running along the west coast, low pressure systems forming over the Bay of
Bengal during the monsoon season. A well marked low pressure area during 28 September - 3 October 2009 over the Bay
of Bengal caused widespread damage to life and property in north Karnataka. In this study, an attempt has been made to
examine the synoptic features of this system that caused heavy rainfall over many districts of the State leading to
widespread destruction.
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