Knowledge Core Collection:https://hdl.handle.net/11681/466792024-03-28T20:56:35Z2024-03-28T20:56:35ZMeasuring climate and extreme weather vulnerability to inform resilience, report 2 : port decision-makers’ barriers to climate and extreme weather adaptationMclean, Elizabeth L.Becker, Austinhttps://hdl.handle.net/11681/351992024-03-09T03:06:05Z2019-11-01T00:00:00ZTitle: Measuring climate and extreme weather vulnerability to inform resilience, report 2 : port decision-makers’ barriers to climate and extreme weather adaptation
Authors: Mclean, Elizabeth L.; Becker, Austin
Abstract: Numerous decision-making barriers prevent or delay climate and extreme weather resilience investments. Port decision-makers’ perceptions of such barriers are important for proactive strategies for reducing coastal vulnerability and supporting safe and sustainable operations of U.S. ports. This report identifies the perceived adaptation barriers for seaports, and strategies to remove them. Interviews with 30 directors/managers, environmental specialists, and safety planners at 15 medium- and high-use ports of the North Atlantic resulted in a typology of factors and conditions that hamper adaptation actions, planning, and perceived strategies to overcome these barriers. This study finds that the decision-makers have consensus on seven overarching barriers to adaptation: the lack of understanding of the risks (93%), lack of funding (77%), perceived levels of risks do not exceed the action threshold (70%), governance disconnect (67%), physical constraints (67%), lack of communication amongst individuals (7%), and the problem (of adaptation) is overwhelming (7%).For strategies to overcome the adaptation barriers, the study points to the importance of fostering collaborations, making regulatory changes, and conducting risk assessments. Port decision-makers also mentioned the need for developing financial incentives and taking advantage of communication networks as necessary strategies to implement climate and extreme weather adaptations.
Description: Contract Report2019-11-01T00:00:00ZMeasuring climate and extreme weather vulnerability to inform resilience, report 1 : a pilot study for North Atlantic medium- and high-use maritime freightMcIntosh, R. DuncanMclean, Elizabeth L.Becker, Austinhttps://hdl.handle.net/11681/351962024-03-09T03:05:56Z2019-11-01T00:00:00ZTitle: Measuring climate and extreme weather vulnerability to inform resilience, report 1 : a pilot study for North Atlantic medium- and high-use maritime freight
Authors: McIntosh, R. Duncan; Mclean, Elizabeth L.; Becker, Austin
Abstract: This research identified vulnerability indicators from open-data sources that represent the three components of vulnerability, as outlined by the Intergovernmental Panel on Climate Change: exposure, sensitivity, and adaptive capacity. With input from experts knowledgeable in port operations, planning, policy, and data, researchers refined a set of high-level vulnerability indicators to answer the following key questions: (1) how sufficient is the current state of U.S. seaport sector data for developing expert-supported vulnerability indicators for a regional sample of ports and (2) how can indicators be used to measure the relative vulnerability (i.e., exposure, sensitivity, and adaptive capacity) of multiple ports? Using open-data sources, this study developed an Indicator-Based Vulnerability Assessment methodology that integrates multiple vulnerability indicators for ports in the North Atlantic region. The Analytic Hierarchy Process, a technique for organizing and analyzing complex decisions using pairwise comparisons, was used to develop a ranking that matched 3 of the top-4 most vulnerable ports that were subjectively identified by port experts. This demonstrates strong promise for this methodological approach to measure seaport vulnerability to climate and extreme weather events. Indices of seaport relative vulnerability to climate and extreme weather can advance goals for a resilient Marine Transportation System by informing efforts and plans to prioritize and allocate limited resources.
Description: Contract Report2019-11-01T00:00:00ZPractical resilience metrics for coastal infrastructure featuresAyyub, Bilal M.https://hdl.handle.net/11681/328892023-03-24T15:18:17Z2019-05-01T00:00:00ZTitle: Practical resilience metrics for coastal infrastructure features
Authors: Ayyub, Bilal M.
Abstract: This effort is directed towards improving basic understanding of the resilience of complex systems for the development of practical resilience metrics that quantify the capacity to withstand damages, rapidly recover, and adapt to future change. The resilience metrics are based on practical performance measures of coastal infrastructure. Massive savings could be realized by enhancing the resilience of a system, including infrastructure, networks, and communities through risk reduction and expeditious recovery. Existing metrics do not always lend themselves easily and intuitively to practical applications in effective and efficient manners. The coastal and storm damage reduction, navigation, and environmental missions of the U.S. Army Corps of Engineers (USACE) require consistent, transparent, quantitative metrics with which to understand the resiliency of these complex systems. This report provides a resilience definition that meets a set of requirements with clear relationships to metrics of the relevant abstract notions of reliability and risk. The report also provides metrics that are practical and simplified while capturing all the attribute set in the resilience definition. Recovery models with case studies, and illustrative examples, are also provided. Next steps are defined. The report contributes towards advancing the USACE capabilities in defining, quantifying, and assessing coastal and watershed system resilience.
Description: Contract Report2019-05-01T00:00:00ZDebris control at hydraulic structures in selected areas of the United States and EuropeWallerstein, N.Thorne, C. R. (Colin R.)Abt, Steven R.https://hdl.handle.net/11681/225702023-03-24T15:20:49Z1997-12-01T00:00:00ZTitle: Debris control at hydraulic structures in selected areas of the United States and Europe
Authors: Wallerstein, N.; Thorne, C. R. (Colin R.); Abt, Steven R.
Abstract: Abstract: Floating debris obstruction is a problem at many run-of-river structures including navigation locks, hydro-electric and thermal-electric power plants and dam spillways. Previous research suggests a sound understanding of debris sources would aid with developing more cost effective debris control methods. This report reviews current debris management technologies employed at various run-of-river structures in Europe and the United States of America. The information reported has been contained through field visits and from discussions with engineers and plant operators. Relevant published research work on debris control mechanisms, including trash rack design problems, raking equipment, and spillway design is also reviewed. European research centers visited were Delft Hydraulics in the Netherlands, the Hydraulics Laboratory at the Technical University of Munich, Germany, and the Institute of Hydraulics, Hydrology and Glaciology at the Technical University of Zurich, Switzerland. The U.S. field visits were carried out in the Huntington, Vicksburg, St. Louis, Portland, and San Francisco Corps of Engineer Districts. The control technologies are summarized, and state-of-the-art design procedures and best practice management recommendations for debris control are outlined for each class of structure that may experience debris-related problems.
Description: Contract Report1997-12-01T00:00:00Z