A cost-effective, environmentally-aware undersea infrastructure to enhance community resilience to tsunamis

Xerandy, Taieb Znati, Louise K. Comfort

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The focus of this paper is on mitigating the impact of near-field tsunami detection on humans and the environment. We propose a hybrid network infrastructure that combines an undersea sensor network with fiber optic cable for cost effective, timely, and reliable near-field tsunami detection. We first formulate a cost minimization problem for near-field tsunami detection. To capture important characteristics of the environment, the optimization model incorporates into its formalization important sea environment factors and a realistic acoustic propagation model. A heuristic approach is developed to derive a near-optimal solution to the original cost minimization problem. To demonstrate the viability of the proposed model, a case study, focused on Padang City is used, and a comparative analysis of different network configurations, using different design parameters and cost scenarios is performed. Three different cost functions, namely linear, power-law, and logarithmic, are used in the analysis. The results show that the heuristic computes efficient network configurations when a solution exists, for the linear, logarithmic, and power-law cost functions. However, further assessment should be made on the results to anticipate a local maximum that may exist in the cost function.

Original languageEnglish
Pages (from-to)84-96
Number of pages13
JournalSafety Science
Volume90
DOIs
Publication statusPublished - Dec 1 2016
Externally publishedYes

Keywords

  • Cost
  • Fiber optic cable
  • Heuristic
  • Near-field tsunami
  • Optimization
  • Reliability
  • Timeliness
  • Undersea sensor

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Safety Research
  • Public Health, Environmental and Occupational Health

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