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

机译：具有成本效益，环保意识的海底基础设施，可增强社区对海啸的抵御能力

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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. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本文的重点是减轻近场海啸检测对人类和环境的影响。我们提出了一种混合网络基础结构，该结构将海底传感器网络与光缆相结合，可实现经济高效，及时且可靠的近场海啸检测。我们首先为近场海啸检测制定一个成本最小化问题。为了捕获环境的重要特征，优化模型将重要的海洋环境因素和现实的声传播模型纳入了其形式化。开发了一种启发式方法来为原始成本最小化问题得出接近最佳的解决方案。为了证明所提出模型的可行性，使用了一个以巴东市为中心的案例研究，并使用不同的设计参数和成本方案对不同网络配置进行了比较分析。分析中使用了三种不同的成本函数，即线性，幂律和对数。结果表明，对于线性，对数和幂律成本函数，启发式算法可以在存在解决方案时计算有效的网络配置。但是，应该对结果进行进一步评估，以预测成本函数中可能存在的局部最大值。 （C）2016 Elsevier Ltd.保留所有权利。

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