Discussion Paper | Discussion Paper | Discussion Paper | Discussion Paper | Ocean Sci. Discuss., 11, 575–611, 2014 Open Access www.ocean-sci-discuss.net/11/575/2014/ Ocean Science doi:10.5194/osd-11-575-2014 Discussions © Author(s) 2014. CC Attribution 3.0 License. This discussion paper is/has been under review for the journal Ocean Science (OS). Please refer to the corresponding final paper in OS if available. Coastal sea level response to the tropical cyclonic forcing in the north Indian Ocean P. Mehra1, S. Mohan1, P. Vethamony1, K. Vijaykumar1, T. M. Balakrishnan Nair2, Y. Agarvadekar1, K. Jyoti1, K. Sudheesh1, R. Luis1, S. Lobo1, and B. Harmalkar1 1CSIR-National Institute of Oceanography (NIO), Goa, India 2Indian National Centre for Ocean Information Services (INCOIS), Hyderabad, Goa, India Received: 13 December 2013 – Accepted: 27 January 2014 – Published: 20 February 2014 Correspondence to: P. Mehra (
[email protected]) Published by Copernicus Publications on behalf of the European Geosciences Union. 575 Discussion Paper | Discussion Paper | Discussion Paper | Discussion Paper | Abstract The study examines the observed storm-generated sea-level variation due to deep depression (Event-E1) in the Arabian Sea from 26 November–1 December 2011 and a cyclonic storm “THANE” (Event-E2) over the Bay of Bengal during 25–31 Decem- 5 ber 2011. The sea-level and surface meteorological measurements collected during these extreme events exhibit strong synoptic disturbances leading to storm surge up to 43 cm on the west coast and 29 cm on the east coast of India due to E1 and E2. E1 generated sea level oscillations at the measuring stations on the west coast (Ratnagiri, Verem and Karwar) and east coast (Mandapam and Tuticorin) of India with significant 10 energy bands centered at periods of 92, 43 and 23 min.