On the effectiveness of mangroves in attenuating cyclone - Induced waves

S Narayanan, T Suzuki, MJF Stive, HJ Verhagen, WNJ Ursem, RWMRJB Ranasinghe

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review


A study of the effectiveness of mangroves in attenuating cyclone- induced waves was done using the SWAN 40.81 numerical model. Hydraulic parameters during extreme events and local mangrove vegetation parameters were estimated for the Kanika Sands mangrove island near the upcoming Dhamra Port in Orissa, India. Simplified generic analyses were first conducted to obtain insights into the characteristics and behaviour of the model and the system. These were used to select relevant scenarios for simulations of actual conditions at the case-study site. The mangroves were found to be effective in reducing wave heights at the port behind the island though the effectiveness is limited by its geometry and distance from the port. The presence of vegetation has a marked effect though the effect of a variation in vegetation factor is limited. An optimum cross-shore width range for maximum protection was quantified.
Original languageEnglish
Title of host publicationProceedings of 32nd Conference on Coastal Engineering, ICCE 2010
EditorsJ McKee Smith, P Lynett
Number of pages12
Publication statusPublished - 2011
Event32nd International Conference on Coastal Engineering - s.l., Shanghai, China
Duration: 30 Jun 20105 Jul 2010
Conference number: 32

Publication series



Conference32nd International Conference on Coastal Engineering
Abbreviated titleICCE 2010

Bibliographical note

geen ISBN


  • Cyclone
  • Kanika Sands
  • Mangroves
  • Vegetation Factor
  • Wave Attenuation


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