Publication Date:
2022-10-26
Description:
© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Filippi, M., Hanlon, R., Rypina, I. I., Hodges, B. A., Peacock, T., & Schmale, D. G. Tracking a surrogate hazardous agent (Rhodamine Dye) in a coastal ocean environment using In Situ measurements and concentration estimates derived from drone images. Remote Sensing, 13(21), (2021): 4415, https://doi.org/10.3390/rs13214415.
Description:
New tools and technology are needed to track hazardous agents such as oil and red tides in our oceans. Rhodamine dye (a surrogate hazardous agent) was released into the Atlantic ocean in August 2018, and experiments were conducted to track the movement of the dye near the water surface within three hours following the release. A DrOne Water Sampling SystEm (DOWSE), consisting of a 3D-printed sampling device tethered to a drone, was used to collect 26 water samples at different locations around the dye plume. Rhodamine concentrations were measured from the drone water samples using a fluorometer and ranged from 1 to 93 ppb. Dye images were taken during the drone-sampling of surface water containing dye and at about 10 m above the sampling point. These images were post-processed to estimate dye concentrations across the sampling domain. A comparison of calibrated heat maps showed that the altitude images yielded dye distributions that were qualitatively similar to those from images taken near the ocean surface. Moreover, the association between red ratios and dye concentrations yielded trendlines explaining up to 67% of the variation. Drones may be used to detect, track and assist in mitigating hazardous agents in the future.
Description:
This research was supported in part by the U.S. National Science Foundation (NSF) under Grant Numbers AGS 1520825 (Hazards SEES: Advanced Lagrangian Methods for Prediction, Mitigation and Response to Environmental Flow Hazards), and IIS–1637915 (NRI: Coordinated Detection and Tracking of Hazardous Agents with Aerial and Aquatic Robots to Inform Emergency Responders).
Keywords:
UAS
;
Drone
;
Fluorescent dye
;
Rhodamine
;
Transport
;
Hazardous agents
;
Plume
;
Unmanned systems
Repository Name:
Woods Hole Open Access Server
Type:
Article
Permalink
