评估反复洪水对可达性的空间异质性影响：汉普顿路地区案例研究：第2部分 公交可达性
Assessing The Spatially Heterogeneous Impact of Recurrent Flooding On Accessibility: A Case Study of The Hampton Roads Region:Part 2 Transit Accessibility
AI总结：
本研究利用WAZE众包洪水数据，分析汉普顿路地区反复洪水对公交可达性的时空影响，发现早高峰影响最大，且高脆弱性区域受影响更重，为公平交通规划提供依据。
摘要：
由于海平面上升加速和气候变化，沿海地区的交通系统日益受到反复洪水的影响，然而累积的出行中断效应尚未被充分理解。在本研究的第1部分中，考察了反复洪水对汽车出行模式可达性的影响。本文（研究的第2部分）借助来自WAZE的时空分解众包洪水事件数据，量化了反复洪水对公交服务可达性的影响。针对710个交通分析区（TAZs）构建了五个时段（一天内）的固定路线公交网络，以捕捉因反复洪水导致的公交可达性减少的时空变化。结果表明，最大的公交可达性减少发生在早高峰时段，其中单个TAZ的工作出行公交可达性减少范围为0至88.2%（平均为6.4%），非工作出行的减少范围为0至99.9%（平均为3.7%）。此外，社会脆弱性分析表明，在交通和社会经济地位方面具有较高脆弱性人口比例较大的TAZ，更可能经历由反复洪水引发的公交可达性减少。本研究的结果强化了这样一种观点，即反复洪水下的交通影响在一个区域内并非均匀分布，这种时空差异转化为不同人口群体所承受的不同影响。像本研究这样的分解影响分析可以支持交通工程师和规划者优先分配资源，以确保在日益加剧的气候干扰下实现公平的公交可达性。
英文摘要：
Due to accelerated sea level rise and climate change, the transportation system is increasingly affected by recurrent flooding coastal regions, yet the cumulative travel disruption effects are not well understood. In Part 1 of this study, the accessibility impacts of recurrent flooding on the auto mode were examined. In this paper (Part 2 of the study), the impact of recurrent flooding on transit service accessibility was quantified with the aid of spatially and temporally disaggregated crowdsourced flood incident data from WAZE. A fixed route transit network is built for five time of day periods for 710 traffic analysis zones (TAZs), to capture the spatial and temporal variation of transit accessibility reduction due to recurrent flooding. Results show that the greatest transit accessibility reduction occurs during the morning peak hour, with individual TAZ transit accessibility reduction ranging from 0 to 88.2% for work trips (with an average of 6.4%) and ranging from 0 to 99.9% for non-work trips (with an average of 3.7%). Furthermore, social vulnerability analysis indicates that TAZs with a greater share of people with higher vulnerability in transportation and socioeconomic status are more likely to experience recurrent flooding-induced transit accessibility reduction. Results from this study reinforce the notion that transportation impacts under recurrent flooding are not uniformly experienced throughout a region, and this spatial and temporal variation translates to different impacts borne by various population groups. Disaggregate impact analysis like this study can support transportation engineers and planners to prioritize resources to ensure equitable transit accessibility under increasing climate disruptions.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
