Exploring the Role of Social Media and Individual Behaviors in Flood Evacuation Processes: An Agent‐Based Modeling Approach

Huang

et al. 2020

IJERPH

Timely and secure evacuation of residents during flood disasters or other emergency events is an important issue in urban community flood risk management, especially in vulnerable communities. An agent-based modeling framework was proposed in order to indicate how the community properties (e.g., community density and percentage of vulnerable residents), residents’ psychological attributes (e.g., flood risk tolerance threshold) and mutual aid mechanism affect the flood evacuation process. Results indicated that: (1) The community density negatively affected the flood evacuation efficiency. The greater the density of the community, the longer the evacuation time. (2) There was a negative correlation between the flood risk tolerance threshold of residents and evacuation efficiency. (3) The proportion of vulnerable resident agents had opposite effects on the evacuation efficiency of different types of communities, which was to negatively affect low-density communities and positively affect high-density communities. (4) Mutual aid mechanism can reduce evacuation time in low-density communities, and the effect was more pronounced with a higher proportion of vulnerable resident agents in the community. These findings can help managers to develop better emergency evacuation management for urban communities.

Section: Flood Risk Warningmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Flood Evacuation Process in Vulnerable Community with Mutual Aid Mechanism: An Agent-Based Simulation Framework

Huang

et al. 2020

IJERPH

Water Resources Research

“…Girons Lopez et al () and Du et al () focus on flood warning and evacuation behavior of people. Girons Lopez et al () developed a conceptual model to examine how the efficiency of flood warning is influenced by social preparedness, which is defined as the knowledge and capacities of a social system to proactively respond to a disaster (United Nations International Strategy for Disaster Reduction, ).…”

Section: Contributions Of the Papers In The Special Section On Sociohmentioning

confidence: 99%

“…Du et al () developed an agent‐based model to understand the coupled dynamics of public opinion and flood evacuation processes and how these dynamics are influenced by multiple information sources (global casting of flooding, social media, and observation of neighbors) and transportation system states. A key distinction of this work is reflecting the fact that individuals' evacuation behavior is not only influenced by the flood warnings from emergency managers but also by peer‐to‐peer communication through social media and observation of neighbors' behavior.…”

Section: Contributions Of the Papers In The Special Section On Sociohmentioning

confidence: 99%

“…One critique of system dynamics approach in sociohydrology is that the diversity of actors is not accounted for. Du et al () address this challenge by developing an agent‐based model of flood warning and evacuation behavior. Collectively, the articles in this issue demonstrate the potential to synthesize multiple methods to increase the robustness of sociohydrological findings—critical to applying insights in practice.…”

Section: Going Forwardmentioning

confidence: 99%

See 1 more Smart Citation

Expanding the Scope and Foundation of Sociohydrology as the Science of Coupled Human‐Water Systems

Konar

Garcia

Sanderson

et al. 2019

Sociohydrology was launched as the science dealing with feedbacks between coupled human and water systems. Much of the early work in sociohydrology involved studies in spatially isolated domains (e.g., river basins) dealing with phenomena that involved emergent patterns in the time domain, with a focus on formulating and testing hypotheses about how they arise. The papers collected in this Special Section "Sociohydrology: Spatial and Temporal Dynamics of Coupled Human-Water Systems" illustrate that the scientific scope of sociohydrology has broadened over the last few years, with a rich diversity of phenomena studied and an expansion of the knowledge foundations and methodologies applied. These Special Section papers now incorporate methodologies and approaches from a wide range of social science disciplines, including anthropology, complex systems, economics, and sociology. The major themes tackled by these papers are understanding (i) water metabolism-the economic use of water; (ii) interactions between humans and droughts; (iii) interactions between humans and floods; and (iv) the role of human institutions, policy, and management. These collected papers provide a foundation for future research that strives to understand how to achieve water resources sustainability (society to water) and reduce the risk of hydrological hazards in society (water to society). Going forward, we suggest that the development of a common sociohydrology framework will be paramount for research development and student training. Additionally, increased engagement with the broader water management communities will enhance sociohydrology understanding and impact.

A systematic review of agent-based model for flood risk management and assessment using the ODD protocol

et al. 2022

Recently, applications of agent-based model (ABM) have been used to understand the interaction between social and hydrological systems. These systems are dynamic and co-evolving, which can be captured through different decision-making entities in an ABM simulation. Therefore, this review aims to better understand the use of ABM for flood risk management and assessment (FRMA). The review comprises a systematic selection of literature using the PRISMA method, which is then assessed using an adapted version of the overview, design, and detail (ODD) protocol to better understand the ABM model development process for FRMA. The review finds that the use of the ODD protocol was only seen in 25% of the studies. The studies which did not explicitly use the ODD had a comprehensive description of the models, albeit done in a non-standardised way. Modellers continue to face the dilemma between parsimony and the breadth of the model as identified from the design component of the ODD. The hydrological component is mainly captured in the sub-model process of the ODD, however, improvements in the definition of the sub-model component may warrant a more comprehensive description of the processes and facilitate comparison across studies. The applications of ABM have shown promise to understand long term flood risks, test the efficacy of policies and better understand the factors that affect warning response during the flood evacuation process. ODD adopted for this review may consequently allow for the adoption and more coherent use of the protocol to document models in FRMA.