NRI: FND: COLLAB: RAPID: Targeted Sampling of an Unanticipated Harmful Algal Bloom in Lake Anna, Virginia with Aerial and Aquatic Robots
NRI:FND:协作:快速:利用空中和水上机器人对弗吉尼亚州安娜湖意外有害藻华进行有针对性的采样
基本信息
- 批准号:2001120
- 负责人:
- 金额:$ 2.76万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2020
- 资助国家:美国
- 起止时间:2020-03-01 至 2021-02-28
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
An unanticipated harmful algal bloom (HAB) appeared in Lake Anna, Virginia in early August, 2019. Lake Anna is one of the largest freshwater reservoirs in VA. Research is needed to understand threats, manage risks, mitigate incidents, develop capabilities, and strengthen collaborations for our water safety and security. Aerial and aquatic robots will work alongside health and water quality experts from VDH and DEQ to (1) help inform their regular sampling efforts, and (2) provide critical and timely information to guide regulatory decisions. The HAB is still going at Lake Anna, and it is expected to continue until the first freeze at the Lake. Once the first freeze occurs, most of the cyanobacteria will explode and unload a large amount of toxins, requiring further analysis.Since the first report of the harmful algal boom (HAB) on Lake Anna, the bloom has reportedly intensified, and the Virginia Department of Health (VDH) has issued multiple advisories. The most recent VDH advisory (issued on Sept 20, 2019) showed the HAB extending down both northern branches of the lake. The VDH advisories are based in part on water quality data from the VA Department of Environmental Quality (DEQ), which collects samples from a series of stations (GPS waypoints where a manned boat is used to collect samples by hand) across the lake. The research team will work alongside water quality experts (DEQ and VDH) to make targeted collections of the HAB at Lake Anna using aerial robots (a drone equipped with multispectral sensors to image the bloom and a device to sample the water) and aquatic robots (a remotely operated underwater vehicle equipped with underwater GPS, sensors to track the plume in situ, and a device to collect underwater samples). These samples will be analyzed for toxins and nutrients, and the data will be shared with water quality experts and members of the Lake Anna Civic Association. Based on 10 years of seasonal toxin data for Grand Lake St. Marys in Ohio, the research team hypothesize that (1) the HAB at Lake Anna, VA will continue to progress and produce high toxin levels through the coming winter months and (2) aerial and aquatic robots can identify, localize, and sample targeted areas of the HAB in the lake. The specific objectives of this project are to (1) use aerial and aquatic robots to target the HAB in Lake Anna, VA and collect samples at strategic locations; and (2) determine toxin concentrations and nutrient loads in samples collected by robots working alongside humans. This information is critical for determining time-sensitive health advisories, and for the communities of people that live in and around the lake. This work will also show the value of unmanned systems to assist stakeholders in tracking HABs in the water; resulting field-tested technology will provide decision-makers with co-robots that can provide rapid and detailed information on the dispersal of HABs in the environment. The HAB is still going at Lake Anna, and it is expected to continue until the first freeze at the Lake. Once the first freeze occurs, most of the cyanobacteria will lyse and unload a copious amount of cyanotoxins.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.
2019年8月初,弗吉尼亚州安娜湖出现了一次意想不到的有害藻华(HAB)。安娜湖是弗吉尼亚州最大的淡水水库之一。需要进行研究,以了解威胁、管理风险、缓解事件、发展能力并加强合作,以保障我们的水安全和保障。空中和水上机器人将与来自VDH和DEQ的健康和水质专家一起工作,以(1)帮助为他们的定期采样工作提供信息,以及(2)提供关键和及时的信息,以指导监管决策。热带气旋仍在安娜湖肆虐,预计将持续到该湖的第一次冰冻。一旦第一次冻结发生,大多数蓝藻将爆炸并卸载大量毒素,需要进一步分析。自从第一份关于安娜湖有害藻类繁盛(HAB)的报告以来,据报道水华加剧,弗吉尼亚州卫生部(VDH)已经发布了多项建议。最新的VDH公告(发布于2019年9月20日)显示,HAB沿着湖泊的两个北部支流延伸。VDH的建议在一定程度上是基于退伍军人事务部(DEQ)的水质数据,该部门从湖对岸的一系列站点(GPS航点,使用载人船手动采集样本)收集样本。研究小组将与水质专家(DEQ和VDH)合作,使用空中机器人(配备有多光谱传感器的无人机,对水华进行成像和采集水样)和水上机器人(配备水下GPS的遥控水下机器人,现场跟踪羽流的传感器,以及收集水下样本的设备)对安娜湖的HAB进行有针对性的采集。这些样本将被分析毒素和营养物质,数据将与水质专家和安娜湖公民协会的成员共享。基于俄亥俄州大圣玛丽湖10年的季节性毒素数据,研究小组假设:(1)弗吉尼亚州安娜湖的赤潮将在接下来的几个冬季继续发展并产生高水平的毒素;(2)空中和水上机器人可以识别、定位和采样湖中赤潮的目标区域。该项目的具体目标是(1)使用空中和水上机器人瞄准弗吉尼亚州安娜湖的赤潮,并在关键地点收集样本;以及(2)确定与人类一起工作的机器人收集的样本中的毒素浓度和营养物质负荷。这些信息对于确定时间敏感的健康建议以及居住在湖里和湖周围的人们的社区至关重要。这项工作还将展示无人系统的价值,以协助利益攸关方追踪水中的赤潮;由此产生的经过现场测试的技术将为决策者提供合作机器人,这些机器人可以提供关于赤潮在环境中扩散的快速和详细的信息。热带气旋仍在安娜湖肆虐,预计将持续到该湖的第一次冰冻。一旦第一次冻结发生,大多数蓝藻将裂解和卸载大量的氰基毒素。这一裁决反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
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