Replication Data for: Wetland savings? Investigating wetland migration as a Sea Level Rise adaptation strategy in coastal Virginia using a Cost-benefit Analysis

This dataset supports a cost–benefit analysis of tidal wetland migration strategies in response to coastal flooding driven by sea level rise in Belle Haven, Fairfax County, Virginia. The analysis evaluates three wetland migration scenarios: Constrained Migration (CM), Partially Constrained Migration (PCM), and Unconstrained Migration (UM).

Geospatial analyses were conducted to quantify property acquisition costs and changes in flood risk exposure. FEMA Hazus Flood Assessment Structure Tool (based primarily off of Hazus Version 4.0) was used to estimate Average Annualized Losses for coastal flooding under projected conditions for the years 2020, 2040, 2060, and 2080 using depth grids from Virginia’s Coastal Resiliency Master Plan (Version 1).

The dataset is intended to support reproducibility, scenario comparison, and future decision-support analyses related to sea level rise adaptation stratergies and coastal flood risk management.

本数据集支持针对弗吉尼亚州费尔法克斯县贝尔黑文地区因海平面上升引发的海岸洪水的潮汐湿地迁移策略开展成本效益分析。本次分析评估了三类湿地迁移情景：约束迁移（Constrained Migration, CM）、部分约束迁移（Partially Constrained Migration, PCM）与无约束迁移（Unconstrained Migration, UM）。

研究开展了地理空间分析，以量化资产购置成本与洪水风险暴露的变化。本次研究采用联邦应急管理局（FEMA）的Hazus洪水评估结构工具（主要基于Hazus 4.0版本），结合弗吉尼亚州海岸韧性总体规划（版本1）提供的水深栅格数据，对2020、2040、2060及2080年的预测情景下的海岸洪水年均损失进行估算。

本数据集旨在支持与海平面上升适应策略及海岸洪水风险管理相关的可复现性研究、情景对比及未来决策支持分析。