RAPID: Impacts and recovery of natural and managed coastal dunes on a South Carolina barrier island from Hurricane Ian

沙丘是海岸—风成地貌系统的重要组成部分，在管理实践中是一种海岸线防御机制。由于人类活动对自然和周围建筑环境的影响，人工维护沙丘系统已成为普遍现象。这些“管理”的沙丘通常由营养丰富的沙子和故意种植的植被组成。然而，尽管这些系统的当代土地利用动态与历史上研究过的风成地貌学概念（即粗糙度元素对风成运输的影响）有关系，但人们对这些系统的当代土地利用动态知之甚少。RAPID项目将有机会收集对时间敏感的实地数据，以量化飓风伊恩对管理和自然沙丘系统的生物地貌影响和恢复，并将这些测量结果与风暴前的条件进行比较。该项目将通过在EPSCoR州为来自地貌学和土地利用动力学领域代表性不足的群体的首席研究员和研究生提供支持，增强STEM的多样性。调查人员将进行为期一年的实地数据收集，以测量海岸沙丘的地形特征和管理处理。实地工作将包括地面激光扫描和植被调查。这些调查将建立在飓风伊恩之前沿着南卡罗来纳堰洲岛收集的数据集上。研究人员将利用收集到的数据来验证与人工管理和自然沙丘系统的生物地貌响应、这些沙丘的恢复轨迹以及有和没有围栏的人工管理沙丘的增加率有关的假设。该项目可为未来基于过程的极端事件对不同土地利用情景下沙丘形成演化的影响研究奠定基础。研究结果可以为科学界和管理界做出贡献。该项目将涉及与南卡罗来纳州海滩倡导者的利益相关者会议。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

Sand dunes are a critical component of the coastal-aeolian geomorphic system and are a coastline defense mechanism in management practice. Given the anthropogenic actions on the natural and surrounding built environment, it is becoming commonplace to maintain the dune systems artificially. These ‘managed’ dunes frequently comprise nourished sand with intentionally planted vegetation. However, little is known about contemporary land-use dynamics of these systems, despite the relationships to historically studied concepts in aeolian geomorphology (i.e., impacts of roughness elements on aeolian transport). This RAPID project will allow the opportunity to collect time-sensitive field-based data to quantify Hurricane Ian's biogeomorphic impacts and recovery on a managed and natural dune system and to compare those measurements to the pre-storm conditions. The project will enhance diversity in STEM by providing support in an EPSCoR state for a principal investigator and graduate student who are both from underrepresented groups in the field of geomorphology and land-use dynamics.The investigators will conduct one year of field-based data collection to measure the topographic characteristics and management treatments on coastal dunes. The field effort will include Terrestrial Laster Scanning and vegetation surveys. These surveys will build on a dataset collected before Hurricane Ian along South Carolina barrier islands. The investigators will use the collected data to test hypotheses related to the biogeomorphic response of managed and natural dune systems, the recovery trajectories of these dunes, and the accretion rates on managed dunes with and without fences. This project could lead to future process-based research on the influence of extreme events on dune formation and evolution under different land-use scenarios. The results could contribute both to the scientific and management communities. The project will involve stakeholder meetings with South Carolina Beach Advocates.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.