Open AccessFloods in Karnataka during 2009 : A synoptic study
Author(s) -
B. Puttanna,
Geeta Agnihotri
Publication year - 2012
Publication title -
mausam
Language(s) - English
Resource type - Journals
ISSN - 0252-9416
DOI - 10.54302/mausam.v63i2.1396
Subject(s) - low pressure area , trough (economics) , monsoon , bengal , shore , precipitation , bay , climatology , west bengal , monsoon trough , synoptic scale meteorology , environmental science , geography , geology , hydrology (agriculture) , meteorology , oceanography , atmospheric pressure , socioeconomics , sociology , economics , macroeconomics , geotechnical engineering
Karnataka a State in south peninsular India receives 73% of its annual rainfall during southwestmonsoon season. Because of the complex physiographical features, the rainfall pattern over the State shows large spatialvariation from 50 to 350 cms. The coefficient of interannual variation of the monsoon rainfall is about 15% over coastalKarnataka (CK) and between 20-30% over interior Karnataka. The precipitation over this State is mainly dominated bysemi permanent systems like off shore trough running along the west coast, low pressure systems forming over the Bay ofBengal during the monsoon season. A well marked low pressure area during 28 September - 3 October 2009 over the Bayof Bengal caused widespread damage to life and property in north Karnataka. In this study, an attempt has been made toexamine the synoptic features of this system that caused heavy rainfall over many districts of the State leading towidespread destruction.