Cyclone and monsoonal wave characteristics of northwestern Bay of Bengal: long-term observations and modeling

Sisir Kumar Patra, Pravakar Mishra (), P. K. Mohanty, U. K. Pradhan, U. S. Panda, M. V. Ramana Murthy, V. Sanil Kumar and T. M. Balakrishnan Nair
Additional contact information
Sisir Kumar Patra: National Institute of Ocean Technology (NIOT)
Pravakar Mishra: ICMAM-Project Directorate
P. K. Mohanty: Berhampur University
U. K. Pradhan: ICMAM-Project Directorate
U. S. Panda: ICMAM-Project Directorate
M. V. Ramana Murthy: ICMAM-Project Directorate
V. Sanil Kumar: National Institute of Oceanography
T. M. Balakrishnan Nair: Indian National Centre for Ocean Information Services (INCOIS)

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2016, vol. 82, issue 2, No 17, 1073 pages

Abstract: Abstract Long-term wave data play a crucial role in arriving the wave criteria for ports and harbors and shore protection structures. Seasonal and annual wave characteristics are studied based on wave data collected for the year 1994, 2008–2009 and 2013–2014 off Gopalpur, northwestern Bay of Bengal (BoB). The tropical cyclones ensued in BoB hit the coast frequently causing severe erosion due to extreme waves. The sea and swell waves are separated by wave steepness method, and the significant wave height (H s), zero-crossing period and mean wave direction are examined. The results indicate a distinct shift in sea direction by 90° during mid-November to mid-February compared with rest of the year. Throughout the year, predominant swell direction is 160°. In an annual cycle, the contribution of swells in wave height is slightly higher than that of the seas. Annual occurrences of single-, double- and multi-peaked spectra are 22, 40 and 38 %, respectively. The waves are predominant southerly during the southwest monsoon (June, July, August and September) and south-southeasterly for rest of the year, and the variations of wave parameters for three different years are trivial. The spectral wave model MIKE 21 is used to simulate wave characteristics using reanalyzed NCEP wind data for the period June 2008 to May 2009 which exhibits good agreement with a correlation coefficient (R) of 0.86 for H s. The design significant wave height of 7.1 m and 7.8 m is calculated for 10 and 100 years of return periods, respectively, by Weibull distribution.

Keywords: Monsoonal wave; Sea and swell; Spectral wave model; Bay of Bengal (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://link.springer.com/10.1007/s11069-016-2233-0 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:nathaz:v:82:y:2016:i:2:d:10.1007_s11069-016-2233-0

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/11069

DOI: 10.1007/s11069-016-2233-0

Access Statistics for this article

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards is currently edited by Thomas Glade, Tad S. Murty and Vladimír Schenk

More articles in Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards from Springer, International Society for the Prevention and Mitigation of Natural Hazards
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().