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Emergency Communications Network for Disaster Management 灾害管理应急通信网
Pub Date : 2019-08-28 DOI: 10.5772/intechopen.85872
Carlos Alberto Burguillos Fajardo
In recent years, from the majority of field experiences, it has been learned that communications networks are one of the major pillars for disaster management. In this regard, the exploitation of different space technology applications to support the communications services in disasters plays an important role, in the prevention and mitigation of the natural disasters effects on terrestrial communications infrastructures. However, this chapter presents the design and implementation of an emergency communications network for disaster management, based on a topology that integrates communications satellites with remote sensing satellites into an emergency communications network to be activated in disaster events, which affect public or private terrestrial communications infrastructures. Likewise, to design the network, different technical and operational specifications are considered; among which are: the emergency operational strategies implementation to maneuver remote sensing satellites on orbit for optimal images capture and processing, as well as the payload and radio frequencies characterization in communications satellites to implement communications technology tools useful for disaster management. Therefore, this emergency communications network allows putting in operation diverse communications infrastructures for data and images exchange, making available the essential information to accomplish a fast response in disasters or to facilitate the communications infrastructures recuperation in emergencies situations.
近年来,从大多数实地经验来看,通信网是灾害管理的主要支柱之一。在这方面,利用不同的空间技术应用来支持灾害中的通信服务,在预防和减轻自然灾害对地面通信基础设施的影响方面发挥着重要作用。然而,本章介绍了灾害管理应急通信网络的设计和实现,该网络基于一种拓扑结构,该拓扑将通信卫星与遥感卫星集成到应急通信网络中,以便在影响公共或私人地面通信基础设施的灾害事件中启动。同样,在设计网络时,要考虑不同的技术和操作规范;其中包括:实施应急业务战略,在轨道上机动遥感卫星,以实现最佳图像捕获和处理,以及通信卫星的有效载荷和无线电频率特征,以实施对灾害管理有用的通信技术工具。因此,这一应急通信网可使各种通信基础设施投入运行,用于数据和图像交换,提供必要信息,以便在灾害中实现快速反应,或在紧急情况下促进通信基础设施的恢复。
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引用次数: 1
Estimation of Shear Wave Velocity Profiles Employing Genetic Algorithms and the Diffuse Field Approach on Microtremors Array: Implications on Liquefaction Hazard at Port of Spain, Trinidad 利用遗传算法和扩散场方法估算微震阵列的横波速度剖面:对特立尼达西班牙港液化危险的影响
Pub Date : 2019-07-15 DOI: 10.5772/INTECHOPEN.85129
W. Salazar, Garth Mannette, Kafele Reddock, C. Ash
This book chapter explains the methodology to determine the shear wave velocity V S profile employing microtremors array data at Port of Spain, Trinidad, and its implication in the seismic amplification and liquefaction hazard in the city. We divide this study into five sections; firstly, we introduce a description of the spectral autocorrelation method and the genetic algorithm schemes to retrieve the Vs and thickness of soil layers. Secondly, we validate the soil profiles via inspection of the ellipticity pattern at such sites; we also compared the observed horizontal-to-vertical spectral ratios (H/V) with the synthetic ones derived by the Diffuse Field Approach and 1D theoretical SH wave amplification functions. Thirdly, we compute the shear wave velocity in the first 30 m obtained from our genetic inversion and compared with the ones estimated by the empirical formulas based on geomorphological conditions. Fourthly, we present a preliminary liquefaction hazard map based on the level of H/V microtremor ratios and the fundamental period of vibration. Finally, we conclude with further recommendations for planning purposes in the city of Port of Spain.
本章解释了在特立尼达西班牙港利用微震阵列数据确定横波速度V S剖面的方法,以及它在城市地震放大和液化危险中的含义。我们将本研究分为五个部分;首先,介绍了利用谱自相关方法和遗传算法获取土壤v值和土层厚度的方法。其次,我们通过检查这些地点的椭圆模式来验证土壤剖面;我们还将观测到的水平与垂直光谱比(H/V)与通过漫射场方法和一维理论SH波放大函数得到的合成光谱比进行了比较。第三,我们计算了由遗传反演得到的前30 m的横波速度,并与基于地形条件的经验公式估算的横波速度进行了比较。第四,提出了基于H/V微震比水平和振动基本周期的初步液化危险度图。最后,我们对西班牙港城市的规划提出了进一步的建议。
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引用次数: 1
Dam Retirement and Decision-Making 大坝退役与决策
Pub Date : 2019-05-13 DOI: 10.5772/INTECHOPEN.84392
Zhao Xueying, Zhang Shunfu, Zhao Xiaoqiu
Reservoir is an important part of water conservancy engineering system and an important infrastructure for economic and social development. However, with the increase of operating time, as well as the change of social demand and operating environment, the safety, function, benefit, cost, and other characteristics of the reservoir are also changing. Like living things, reservoirs also have a life cycle of “birth, old age, illness, and death.” The retirement of a dam is an inevitable stage in the life cycle management, as well as a means of resource readjustment and rational utilization. Combined with dam retirement cases that caused severe impacts in history, generalized dam removal eco-environment influence factors are obtained from aspects of materializing, ecology, society, and economy. Based on economic rationality theory and flood consequence assessment, two decision-making methods of dam retirement are put forward. The flood consequence method is applied on the case of Heiwa reservoir; key evaluation indexes are compiled from the aspects of ecology, economy, and society; and the evaluation system based on single index is constructed.
水库是水利工程系统的重要组成部分,是经济社会发展的重要基础设施。然而,随着运行时间的增加,以及社会需求和运行环境的变化,水库的安全性、功能、效益、成本等特征也在发生变化。像生物一样,水库也有“生、老、病、死”的生命周期。大坝退役是大坝全生命周期管理的一个必然阶段,也是大坝资源调整和合理利用的一种手段。结合历史上造成严重影响的大坝退役案例,从物化、生态、社会、经济等方面得出了广义的大坝退役生态环境影响因素。基于经济合理性理论和洪水后果评价,提出了两种大坝退役决策方法。将洪水后果法应用于黑洼水库实例;从生态、经济、社会三个方面编制关键评价指标;构建了基于单一指标的评价体系。
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引用次数: 0
Identification and Assessment of Hazard of Development in Gypsum Karst Regions: Examples from Turkey 石膏岩溶地区开发危害识别与评价:以土耳其为例
Pub Date : 2019-05-13 DOI: 10.5772/INTECHOPEN.83684
S. Özel
This study includes natural hazards and environmental problems caused by gypsum on and near the soil, water, and structures. These are karst-specific deformations (caves, fractures, cracks) naturally occurring in gypsum areas, and the problems of salinization, corrosion, erosion, soil and water pollution that occur as a result of dissolution caused by the contact of gypsum with water. In particular, it has been determined that various transfer routes/lines that facilitate human life cause problems on substructures/superstructures resulting from their passage in gypsum areas or on substructures/superstructures (road, buried pipe, building) resulting from the spread of urbanization on this unit, and these have various risks. As a result of these events that have been proven by various studies, it has also been observed that gypsum causes natural hazards and has environmental impacts on human/plant/animal life and living environments and it has also been determined that the quality and sustainability of life/living environment decreased. Therefore, in this study, it has been put forward that gypsum areas pose a risk for the life of all kinds of living beings and that the choice of gypsum areas in the site selection for urbanization will always be risky with respect to natural hazards and environmental problems.
本研究包括石膏对土壤、水和建筑物及其附近造成的自然灾害和环境问题。这些是石膏地区自然发生的喀斯特特有的变形(洞穴、裂缝、裂缝),以及由于石膏与水接触引起的溶解而发生的盐碱化、腐蚀、侵蚀、土壤和水污染等问题。特别是,已确定各种便利人类生活的运输路线/线路会对地下结构/上层建筑造成问题,这些问题是由于它们通过石膏区或由于城市化在该单元的蔓延而对地下结构/上层建筑(道路,埋管,建筑物)造成的,这些都具有各种风险。由于这些已被各种研究证明的事件,人们还观察到石膏会造成自然灾害,并对人类/植物/动物的生命和生活环境产生环境影响,并且还确定生命/生活环境的质量和可持续性下降。因此,本研究提出,石膏区对各种生物的生命存在风险,在城市化选址中,石膏区的选择总是存在自然灾害和环境问题的风险。
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引用次数: 0
Long-Wave Generation due to Atmospheric-Pressure Variation and Harbor Oscillation in Harbors of Various Shapes and Countermeasures against Meteotsunamis 不同形状港口气压变化和港口振荡引起的长波产生及应对气象海啸的对策
Pub Date : 2019-05-13 DOI: 10.5772/INTECHOPEN.85483
T. Kakinuma
First, the generation and propagation of long ocean waves due to the atmospheric-pressure variation have been simulated using the numerical model based on the nonlinear shallow water equations, where the atmospheric-pressure waves of various pressure-profile patterns travel eastward over East China Sea. Before the oscillation attenuation in Urauchi Bay, Japan, the incidence of long waves can continue owing to an oscillation system generated between the main island of Kyushu and Okinawa Trough. Second, the simple estimate equations are proposed to predict both the wave height and wavelength of long waves caused by an atmospheric-pressure wave, using atmospheric-pressure data above the ocean. Third, numerical simulation has been generated for the oscillation in the harbors of C-, I-, L-, and T-type shapes, as well as Urauchi Bay with two bay heads like a T-type harbor. Finally, we discuss disaster measures, including the real-time prediction of meteotsunami generation, as well as both the structural and the nonstructural preparations.
首先,利用基于非线性浅水方程的数值模型,模拟了东海上空各种气压剖面型的气压波在东向传播过程中由于气压变化引起的长海浪的产生和传播。在日本浦内湾振荡衰减之前,由于九州本岛与冲绳海槽之间产生振荡系统,长波的发生率可以继续。其次,利用海洋上空的大气压力数据,提出了简单的估算方程来预测由大气压力波引起的长波的波高和波长。第三,对C-型、I-型、L-型、t型四种形状的港湾,以及像t型港湾一样有两个湾头的浦内湾的振荡进行了数值模拟。最后,我们讨论了灾害措施,包括海啸产生的实时预测,以及结构和非结构准备。
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引用次数: 2
Seismic Hazard of Viaduct Transportation Infrastructure 高架桥交通基础设施的地震危险性
Pub Date : 2019-04-22 DOI: 10.5772/INTECHOPEN.85700
W. Zatar
Prestressed concrete viaduct structures are used for the construction of many highways and railways. The objective of this study was to clarify the inelastic response behavior of partially prestressed concrete viaduct structures during severe earthquake excitations. A study that includes experimental and analytical phases was carried out. Small-scaled models were employed so as to represent actual viaduct structures. Specimens representing the PC girders of the viaduct structures were tested experimentally. The first technique was statically reversed cyclic loading test to study the inelastic response behavior of the PC girders and to obtain the hysteretic-load deformational characteristics. The sub-structured pseudo-dynamic testing technique was implemented as the second testing technique. During the sub-structured pseudo-dynamic test, the PC girder was tested experimentally, and the RC columns of the viaduct structure were simulated analytically. An amplified excitation of the 1995 Hyogo Ken Nanbu earthquake was used. Response analyses for the viaduct model were carried out. A comparison between the experimental results and results obtained from response analyses was made. An agreement between the experimental and analytical results was found. The study revealed that not only the RC columns but also the PC girders may undergo extensive damage during severe earthquake excitations.
预应力混凝土高架桥结构用于许多公路和铁路的建设。本研究的目的是阐明部分预应力混凝土高架桥结构在强烈地震作用下的非弹性响应行为。进行了一项包括实验和分析阶段的研究。采用小比例模型来代表实际的高架桥结构。对代表高架桥结构PC梁的试件进行了试验测试。第一种方法是静力反循环加载试验,研究预应力混凝土梁的非弹性响应特性,获得预应力混凝土梁的滞回荷载变形特性。采用子结构拟动力测试技术作为第二种测试技术。在子结构拟动力试验中,对预应力混凝土梁进行了试验试验,并对高架桥结构的钢筋混凝土柱进行了分析模拟。采用1995年兵库县南部地震的放大激励。对高架桥模型进行了响应分析。对试验结果与响应分析结果进行了比较。实验结果与分析结果一致。研究表明,在强烈的地震作用下,不仅是钢筋混凝土柱,而且混凝土梁也会受到广泛的破坏。
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引用次数: 0
Determinants of Coping Strategies to Floods and Droughts in Multiple Geo-Ecological Zones 多地质生态区水旱应对策略的决定因素
Pub Date : 2019-04-09 DOI: 10.5772/INTECHOPEN.84571
T. Nji, Roland Azibo Balgah
Floods and droughts—the most frequent water-related hazards are negatively impacting livelihoods across the world, particularly in Sub-Saharan African countries, where poverty remains endemic. Naturally, victims adopt different coping strategies against burgeoning hydro-meteorological hazards. Contemporary research on determinants for coping decisions in SSA has been largely driven by isolated case studies, of little relevance for broad-based policy making. We analyze the determinants for coping with floods and droughts across multiple geo-eco-logical zones in Cameroon. Quantitative data primarily obtained from 2024 flood and drought household victims in the Western Highlands and Sudano-Sahelian Upland geo-ecological zones are analyzed alongside qualitative data obtained through 31 FGDs and 99 IDIs using descriptive statistics and regression analysis in MS Excel 2013 and SPSS 20 for the questionnaires and content analysis in Nvivo 11 for the unstructured interviews. Results reveal government policy, socio-cultural, economic and educational factors, and hazard experience as major shapers of coping decisions, irrespective of hazard type, timing and geo-ecology ( P = 0.05). In contrast to the state-of-the-art, we observed livelihoods improvement after some hazardous events. The policy implications for long-term coping and resilience building are then discussed.
洪水和干旱是最常见的与水有关的灾害,对世界各地的生计产生了负面影响,特别是在贫困仍然普遍存在的撒哈拉以南非洲国家。自然,受害者采取不同的应对策略来应对日益严重的水文气象灾害。当代关于SSA应对决策决定因素的研究在很大程度上是由孤立的案例研究驱动的,与广泛的政策制定无关。我们分析了喀麦隆多个地质生态区应对洪水和干旱的决定因素。定量数据主要来自西部高地和苏丹-萨赫勒高地地质生态带的2024年水旱受灾家庭,定性数据主要来自31个fdd和99个IDIs,采用MS Excel 2013和SPSS 20对问卷进行描述性统计和回归分析,Nvivo 11对非结构化访谈进行内容分析。结果显示,政府政策、社会文化、经济和教育因素以及灾害经历是影响应对决策的主要因素,与灾害类型、时间和地理生态无关(P = 0.05)。与最先进的技术相比,我们观察到在一些危险事件发生后,生计得到了改善。然后讨论了长期应对和恢复力建设的政策含义。
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引用次数: 7
Interview of Natural Hazards and Seismic Catastrophe Insurance Research in China 中国自然灾害与地震巨灾保险研究述评
Pub Date : 2019-02-09 DOI: 10.5772/INTECHOPEN.84159
Jian Zhu
In order to solve the increasingly serious threat of natural disasters in western Pacific coastal region, a new life-cycle cost analysis method is presented to evalu-ated the possible loss of natural disasters in the future in China. At the same time the research also lays a foundation for the promotion and establishment of earthquake catastrophe insurance in China. The estimation of earthquake losses for example RC buildings and industrial buildings based stochastic method models is the focus of the research. An assembly-based mixture fragility framework is firstly adopted for modeling and seismic loss estimation. The damage of the structural and non-structural which connected into response of the structures under given stochastic motions use nonlinear incremental time-history analysis to estimate in a detailed. Description of the uncertainty of all parameters in life-cycle cost (LCC) research through appropriate probability distributions to reach quantification of the LCC expected value. Moreover, the study is also to give the expected seismic catastrophe insurance premium (CIP) for two types of typical buildings in high seismic intensity areas of China based probabilistic seismic risk assessment in its service lifetime.
为了解决西太平洋沿海地区日益严重的自然灾害威胁,提出了一种新的全生命周期成本分析方法来评估中国未来可能遭受的自然灾害损失。同时,本研究也为地震巨灾保险在中国的推广和建立奠定了基础。以钢筋混凝土建筑和工业建筑为例,基于随机方法模型的地震损失估计是研究的重点。首次采用基于装配的混合易损性框架进行建模和地震损失估计。在给定的随机运动下,与结构响应相关的结构损伤和非结构损伤采用非线性增量时程分析方法进行了详细的估计。通过适当的概率分布来描述全寿命周期成本研究中各参数的不确定性,达到量化全寿命周期成本期望值的目的。此外,本文还基于概率地震风险评估,给出了中国高烈度地区两类典型建筑在其使用寿命期间的预期地震巨灾保险费(CIP)。
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引用次数: 0
Strong Rainfall in Mato Grosso do Sul, Brazil: Synoptic Analysis and Numerical Simulation 巴西南马托格罗索州强降雨:天气分析与数值模拟
Pub Date : 2019-02-01 DOI: 10.5772/INTECHOPEN.83735
S. H. Franchito, M. Gan, J. P. R. Fernandez
Heavy rainfall and strong winds occurred in the South of Mato Grosso do Sul State, Brazil on 5 December 2015. In this study the synoptic conditions responsible for the storms and their social consequences are analyzed. Also, the state-of-art model (WRF) was used to simulate the atmospheric conditions in this severe event. The results showed that the storm had harmful consequences both in the cities of the region and in the interior of the state, with floods, threw down trees and impacts on the energy distribution. The synoptic analysis showed that over the Mato Grosso do Sul State at high levels occurred a region of wind difluence which was associated with convective clouds of large vertical development. This event was responsible for the heavy rainfall and strong winds in the region. The model results showed that the simulations were in good agreement with the observations. Thus, numerical weather forecast using the model may be extremely useful to obtain important information to mitigate the possible adverse effects of future severe weather events. This study forms part of a cooperative Project between National Institute for Space Research and Energy Power Company aimed to mitigate the impacts of severe events.
2015年12月5日,巴西南马托格罗索州南部出现强降雨和强风。本研究分析了造成风暴的天气条件及其社会后果。同时,利用最先进的模式(WRF)模拟了这次严重事件的大气条件。结果表明,这场风暴对该地区的城市和该州的内陆都造成了有害的后果,造成了洪水,树木被推倒,并影响了能源分布。天气学分析表明,在南马托格罗索州高空出现了一个与大垂直发展的对流云有关的风扩散区。该事件造成了该地区的强降雨和强风。模型结果表明,模拟结果与观测结果吻合较好。因此,使用该模式进行数值天气预报对于获取重要信息以减轻未来恶劣天气事件可能产生的不利影响可能非常有用。这项研究是国家空间研究所和能源电力公司合作项目的一部分,旨在减轻严重事件的影响。
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引用次数: 0
Multiset-Based Assessment of Resilience of Sociotechnological Systems to Natural Hazards 基于多集的社会技术系统抵御自然灾害能力评估
Pub Date : 2019-02-01 DOI: 10.5772/INTECHOPEN.83508
I. Sheremet
The chapter describes multiset-based approach to the assessment of resilience/ vulnerability of the distributed sociotechnological systems (DSTS) to natural hazards (NH). DSTS contain highly interconnected and intersected consuming and producing segments, and also resource base (RB), providing their existence and operation. NH impacts may destroy some local elements of these segments, as well as some parts of RB, thus initiating multiple chain effects, leading to negative consequences far away from the NH local strikes. To assess DSTS resilience to such impacts, multigrammatical representation of DSTS is used. A criterion of DSTS sustainability to NH, being generalization of similar criterion, known for industrial (producing) systems, is proposed. Application of this criterion to critical infrastructures is considered, as well as solution of the reverse problem, concerning subsystems of DSTS, which may stay functional after NH impact.
本章描述了基于多集的方法来评估分布式社会技术系统(DSTS)对自然灾害(NH)的恢复力/脆弱性。DSTS包含了高度互联和交叉的消费和生产环节,以及资源基础(resource base, RB),提供了它们的存在和运行。NH撞击可能会破坏这些区段的部分局部元素,以及RB的一些部分,从而引发多重连锁效应,导致远离NH局部撞击的负面后果。为了评估DSTS对这些影响的弹性,使用了DSTS的多语法表示。提出了一种DSTS对NH的可持续性标准,该标准是对工业(生产)系统中已知的类似标准的推广。考虑将该准则应用于关键基础设施,以及解决DSTS子系统在NH冲击后可能保持功能的逆向问题。
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引用次数: 5
期刊
Natural Hazards - Risk, Exposure, Response, and Resilience
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