Oxford Research Encyclopedia of Natural Hazard Science最新文献

{"title":"Natural Hazards Governance in Turkey","authors":"H. P. Gülkan","doi":"10.1093/ACREFORE/9780199389407.013.245","DOIUrl":"https://doi.org/10.1093/ACREFORE/9780199389407.013.245","url":null,"abstract":"The current outlook in disaster risk management in Turkey is examined in its historic context in this article. Policies, legislation, and specific responsive actions have culminated in 2009 in the formation of a nationwide Disaster and Emergency Management Authority (“Afet ve Acil Durum Yönetimi Başkanlığı” or AFAD in Turkish) that reports directly to the prime minister. Earthquakes are the principal drivers for disaster management in Turkey. The assessment of the system in effect in Turkey from a management science viewpoint is summarized. The chronological description of the Turkish system has been linked to major disaster occurrences and consequent legislative changes.","PeriodicalId":300110,"journal":{"name":"Oxford Research Encyclopedia of Natural Hazard Science","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122832794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rock Avalanches","authors":"T. Davies","doi":"10.1093/acrefore/9780199389407.013.326","DOIUrl":"https://doi.org/10.1093/acrefore/9780199389407.013.326","url":null,"abstract":"Rock avalanches are very large (greater than about 1 million m3) landslides from rock slopes, which can travel much farther than smaller events; the larger the avalanche, the greater the travel distance. Rock avalanches first became recognized in Switzerland in the 19th century, when the Elm and Goldau events killed many people a surprisingly long way from the origin of the landslide; these events first posed the “long-runout rock-avalanche” problem. In essence, the several-kilometer-long runout of these events appears to require low friction beneath and within the moving rock mass in order to explain their extremely long deposits, but in spite of intense research in recent decades this phenomenon still lacks a generally accepted explanation. Large collapses of volcano edifices can also generate rock avalanches that travel very long distances, albeit with a different runout–volume relationship to that of non-volcanic events. Even more intriguing is the presence of long-runout deposits not just on land but also beneath the sea and on the surfaces of Mars and the Moon.\u0000 Numerous studies of rock avalanches have revealed a number of consistencies in deposit and behavioral characteristics: for example, that little or no mixing of material occurs within the moving debris mass during runout; that the deposit material beneath a meter-scale surface layer is pervasively and intensely fragmented, with fragments down to submicrometer size; that many of these fragments are agglomerates of even finer particles; that throughout the travel of a rock avalanche large volumes of fine dust are produced; that rock avalanche surfaces are typically covered by hummocks of a range of sizes; and that, as noted above, runout distance increases with volume. Since rock avalanches can travel tens of kilometers from their source, they pose severe, if low-probability, direct hazards to societal assets in mountain valleys; in addition, they can trigger extensive and long-duration geomorphic hazard cascades.\u0000 Although large rock avalanches are rare (e.g., in a 10,000 km2 area of the Southern Alps in New Zealand, research showed that events larger than 5 × 107 m3 occurred about once every century), studies to date show that the proportion of total landslide volume involved in such large events is greater than the proportion in smaller, more frequent events, so that a large proportion of the total sediment generated in mountains by uplift and denudation originates in large rock avalanches. Consequently, large rock avalanches exert a significant influence on mountain geomorphology, for example by blocking rivers and forming landslide dams; these either fail, causing large dam-break floods and long-duration aggradation episodes to propagate down river systems, or remain intact to infill with sediment and form large valley flats. Rock avalanches that fall onto glaciers often result in large terminal moraines being formed as debris accumulates at the glacier terminus, and these moraine","PeriodicalId":300110,"journal":{"name":"Oxford Research Encyclopedia of Natural Hazard Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131377963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Natural Hazards Governance in China","authors":"T. Sim, Junhyuk Yu","doi":"10.1093/ACREFORE/9780199389407.013.239","DOIUrl":"https://doi.org/10.1093/ACREFORE/9780199389407.013.239","url":null,"abstract":"China is a vast country frequently impacted by multiple natural hazards. All natural disasters have been reported in China, except volcanic eruptions. Almost every region in China is threatened by at least one type of natural hazard, and the rural areas are most vulnerable, with fewer resources and less developed disaster protective measures as well as lower levels of preparedness.\u0000 In the first 30 years since its establishment in 1949, the Chinese government, hindered by resource constraints, encouraged local communities to be responsible for disaster response. As the country’s economy grew exponentially, after it opened its doors to the world in the late 1970s, China’s natural hazard governance (NHG) system quickly became more top-down, with the government leading the way for planning, coordinating, directing, and allocating resources for natural disasters.\u0000 The development of China’s NHG is linked to the evolution of its ideologies, legislation system, and organizational structures for disaster management. Ancient China’s disaster management was undergirded by the ideology that one accepted one’s fate passively in the event of a disaster. In contemporary China, three ideologies guide the NHG: (a) passive disaster relief characterized by “help oneself by engaging in production”; (b) active disaster management characterized by “emergency management”; and (c) optimized disaster risk governance characterized by “multiple stakeholders working together.” Meanwhile, the NHG legislation and systems have become more open, transparent, and integrated one over time.\u0000 Evidenced by the unprecedented growth of social organizations and private companies that engaged in disaster-related activities during and after the 2008 Wenchuan earthquake, discussions on integrating bottom-up capacities with the top-down system have increased recently. The Chinese government started purchasing services from social organizations and engaging them in building disaster model communities (officially known as “Comprehensive Disaster Reduction Demonstration Communities”) in recent years. These are, potentially, two specific ways for social organizations to contribute to China’s NHG system development.","PeriodicalId":300110,"journal":{"name":"Oxford Research Encyclopedia of Natural Hazard Science","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122651270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Roles of Non-Government Organizations in Disaster Risk Reduction","authors":"Jonatan A. Lassa","doi":"10.1093/ACREFORE/9780199389407.013.45","DOIUrl":"https://doi.org/10.1093/ACREFORE/9780199389407.013.45","url":null,"abstract":"The collaborative disaster risk governance framework promises better collaboration between governments, the private sector, civil society, academia, and communities at risks. In the context of modern disaster risk reduction systems, the key triadic institutions, namely government (state), the private sector (business/market), and NGOs (civil society), have been gradually transforming their ecosystem to utilize more proactive disaster response strategies, equipped with professional staff and technical experts and armed with social and humanitarian imperatives to reduce the risks of disasters. While the roles of governments and public actions have received greater attention in disaster and emergency management studies, recent shifts in attention to promote bolder engagements of both non-governmental organizations and business communities in risk reduction can be seen as a necessary condition for the future resilience of society.\u0000 Historically speaking, NGOs have exercised models of moral imperative whereby they build their relevancy and legitimacy to address gaps and problems at global and local levels. NGOs have been part of the global disaster risk reduction (DRR) ecosystem as they continue to shape both humanitarian emergencies action and the DRR agenda at different levels where their presence is needed and valued and their contribution is uniquely recognized. This article exemplifies the roles of NGOs at different levels and arenas ranging from local to international disaster risk reduction during the last 70 years, especially since World War II. It also provides examples of potential roles of NGOs under the Sendai Framework for Disaster Risk Reduction 2030.","PeriodicalId":300110,"journal":{"name":"Oxford Research Encyclopedia of Natural Hazard Science","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127336342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Financing Community Resilience Before Disaster Strikes: Lessons From the United States","authors":"C. Kirschner, Akheil Singla, Angie Flick","doi":"10.1093/ACREFORE/9780199389407.013.191","DOIUrl":"https://doi.org/10.1093/ACREFORE/9780199389407.013.191","url":null,"abstract":"As more and more of the population moves to areas prone to natural hazards, the costs of disasters are on the rise. Given that these events are an eventuality, governments must aid their communities in promoting disaster resilience, enabling their communities to reduce their susceptibility to natural hazards, and adapting to and recovering from disasters when they occur.\u0000 The federal system in the United States divides these responsibilities among national, state, and local governments. Local and state governments are largely responsible for the direct provision of services to their communities, and the Stafford Act of 1988 provides that the federal government will pay at least 75% of all eligible expenses once a presidential major disaster declaration has been made. As a result, state and local governments have become largely reliant on transfers from the federal government to pay for disaster relief and recovery efforts. This system encourages state and local governments to ignore the risks they face and turn to the federal government for aid after a disaster.\u0000 This system also seems to underemphasize an important mechanism that can bolster disaster resilience: financing the costs of disasters in advance through ex ante budgeting. Four tools for budgeting ex ante—intergovernmental grants, disaster stabilization funds, the municipal bond market, and hazard insurance—are described and examples of their use provided. Despite limited use by state governments, these tools provide governments the opportunity to build community resilience to disasters by budgeting ex ante for them.","PeriodicalId":300110,"journal":{"name":"Oxford Research Encyclopedia of Natural Hazard Science","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126919384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Linking Risk Reduction and Community Resilience","authors":"Hyunjung Ji","doi":"10.1093/ACREFORE/9780199389407.013.174","DOIUrl":"https://doi.org/10.1093/ACREFORE/9780199389407.013.174","url":null,"abstract":"Risk reduction is a policy priority in governments at all levels. Building community resilience is one of the keys to reducing disaster risks. Resilience-focused risk reduction considers the wider social, political, and cultural environments of a community and emphasizes the importance of working with community members. This is in stark contrast to the previous vulnerability-focused risk management that treats disasters as unavoidable natural events and recognizes people as passive or helpless under the unavoidable disasters.\u0000 Community resilience is a critical concept in identifying visions and directions for risk reduction strategies. Community resilience has two major qualities: inherent community conditions (inherent resilience) and the community’s adaptive capacity (adaptive resilience). There are at least four components that should be included in risk reduction strategies to enhance both inherent and adaptive community resilience: risk governance, community-based risk reduction policies, non-governmental disaster entrepreneurs, and people-centered risk reduction measures.\u0000 Risk governance is required to bridge the gap between national policies and local practices, scientific knowledge of natural hazards and locally accumulated knowledge, and national assistance and local actions. Community-based risk reduction policies should complement national disaster policies to reflect locally specific patterns of hazard, exposure, and resilience that are otherwise ignored in policy design process at the international and national levels. Risk reduction strategies should also encourage emergence of non-governmental entrepreneurs who can contribute to the speed and success of community relief and recovery following a disaster by resolving the immediate needs of the affected communities and transitioning people toward autonomy and self-reliance. Finally, risk reduction strategies should include people-centered policy measures that are designed to change the awareness, attitudes, and behaviors of people so that they are more prepared when facing a disaster.","PeriodicalId":300110,"journal":{"name":"Oxford Research Encyclopedia of Natural Hazard Science","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116342729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flood Insurance and Flood Risk Reduction","authors":"S. Surminski","doi":"10.1093/ACREFORE/9780199389407.013.91","DOIUrl":"https://doi.org/10.1093/ACREFORE/9780199389407.013.91","url":null,"abstract":"The rapid increase in losses from flooding underlines the importance of risk reduction efforts to prevent or at least mitigate the damaging impacts that floods can bring to communities, businesses, and countries. This article provides an overview of how the science of disaster risk management has improved understanding of pre-event risk reduction [or disaster risk reduction (DRR)]. Implementation, however, is still lagging, particularly when compared to expenditure for recovery and repair after a flood event. In response, flood insurance is increasingly being suggested as a potential lever for risk reduction, despite concerns about moral hazard. The article considers the literature that has emerged on this topic and discusses if the conceptual efforts of linking flood insurance and risk reduction have led to practical action. Overall, there is limited evidence of flood insurance effectively promoting risk reduction. To the extent there is, it suggests that more complex behavioral aspects are also at play. Further evidence is required to support this potential role, particularly around data and risk assessment, and the viability of different risk reduction measures.","PeriodicalId":300110,"journal":{"name":"Oxford Research Encyclopedia of Natural Hazard Science","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116559459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disasters and Large-Scale Population Dislocations: International and National Responses","authors":"A. Oliver-Smith","doi":"10.1093/ACREFORE/9780199389407.013.224","DOIUrl":"https://doi.org/10.1093/ACREFORE/9780199389407.013.224","url":null,"abstract":"Large-scale displacement takes place in the context of disaster because the threat or occurrence of hazard onset makes the region of residence of a population uninhabitable, either temporarily or permanently. Contributing to that outcome, the wide array of disaster events is invariably complicated by human institutions and practices that can contribute to large-scale population displacements. Growing trends of socially driven exposure and vulnerability around the world as well as the global intensification and frequency of climate-related hazards have increased both the incidence and the likelihood of large-scale population dislocations in the near future. However, legally binding international and national accords and conventions have not yet been put in place to deal with the serious impacts, and material, health-related, and sociocultural losses and human rights violations that are experienced by the millions of people being swept up in the events and processes of disasters and mass population displacements. Effective policy development is challenged by the increasing complexity of disaster risk and occurrence as well as issues of causation, adequate information, lack of capacity, and legal responsibility. States, international organizations, state and international development and aid agencies must frame, define, and categorize appropriately disaster forced displacement and resettlement to influence effective institutional responses in emergency humanitarian assistance, transitional shelter and care, and durable solutions in managing migration and resettlement if return is not possible. The forms that disaster-associated forced displacements are projected to take and corresponding national responses are explored in the Indian Ocean tsunami of 2004 in Sri Lanka, a massive disaster in a nation riven by civil conflict; Hurricane Katrina of 2005 in the United States, where the scale and nature of displacement bore little relation to hazard intensity; and the 2011 Great East Japan Earthquake, Tsunami, and nuclear exposure incident exemplifying the emerging trend of complex, concatenating, multihazard disasters that bring about large-scale population displacements.","PeriodicalId":300110,"journal":{"name":"Oxford Research Encyclopedia of Natural Hazard Science","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133935997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling Power Outage Risk From Natural Hazards","authors":"S. Guikema, R. Nateghi","doi":"10.1093/ACREFORE/9780199389407.013.52","DOIUrl":"https://doi.org/10.1093/ACREFORE/9780199389407.013.52","url":null,"abstract":"Natural disasters can have significant widespread impacts on society, and they often lead to loss of electric power for a large number of customers in the most heavily impacted areas. In the United States, severe weather and climate events have been the leading cause of major outages (i.e., more than 50,000 customers affected), leading to significant socioeconomic losses. Natural disaster impacts can be modeled and probabilistically predicted prior to the occurrence of the extreme event, although the accuracy of the predictive models will vary across different types of disasters. These predictions can help utilities plan for and respond to extreme weather and climate events, helping them better balance the costs of disaster responses with the need to restore power quickly. This, in turn, helps society recover from natural disasters such as storms, hurricanes, and earthquakes more efficiently. Modern Bayesian methods may provide an avenue to further improve the prediction of extreme event impacts by allowing first-principles structural reliability models to be integrated with field-observed failure data.\u0000 Climate change and climate nonstationarity pose challenges for natural hazards risk assessment, especially for hydrometeorological hazards such as tropical cyclones and floods, although the link between these types of hazards and climate change remains highly uncertain and the topic of many research efforts. A sensitivity-based approach can be taken to understand the potential impacts of climate change-induced alterations in natural hazards such as hurricanes. This approach gives an estimate of the impacts of different potential changes in hazard characteristics, such as hurricane frequency, intensity, and landfall location, on the power system, should they occur. Further research is needed to better understand and probabilistically characterize the relationship between climate change and hurricane intensity, frequency, and landfall location, and to extend the framework to other types of hydroclimatological events.\u0000 Underlying the reliability of power systems in the United States is a diverse set of regulations, policies, and rules governing electric power system reliability. An overview of these regulations and the challenges associated with current U.S. regulatory structure is provided. Specifically, high-impact, low-frequency events such as hurricanes are handled differently in the regulatory structure; there is a lack of consistency between bulk power and the distribution system in terms of how their reliability is regulated. Moreover, the definition of reliability used by the North American Reliability Corporation (NERC) is at odds with generally accepted definitions of reliability in the broader reliability engineering community. Improvements in the regulatory structure may have substantial benefit to power system customers, though changes are difficult to realize.\u0000 Overall, broader implications are raised for modeling other types of natura","PeriodicalId":300110,"journal":{"name":"Oxford Research Encyclopedia of Natural Hazard Science","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129184538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}