Detection of deposited drill cuttings on the sea floor - A comparison between underwater hyperspectral imagery and the human eye

Cochrane, Sabine; Ekehaug, S.; Pettersen, Ragnhild; Refit, E.C.; Hansen, Ingrid Myrnes; Aas, L.M.S.

doi:10.1016/j.marpolbul.2019.04.031

Cited by 12 publications

(13 citation statements)

References 29 publications

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“…In this context, UHI is proving to be a promising avenue for evaluating areas where increased levels of suspended sediments caused by exploratory drilling increase the mortality of filter-feeding fauna (e.g., corals and sponges), with drill-cause plumes extending up to kilometers away from a drilling site. [119] explains that current exploratory drilling environmental impacts are visually assessed with video-transects and manual annotators that classify the effects ranging from: (Class A) drilling site with smothered sediment, clear signs of recent sediment deposition, and absence of biological activity, to (Class B) undisturbed sediment representing natural conditions, no sediment deposition, and a diversity of organisms. The subtle differences between these two classifications (from A to B) are difficult to assess visually since natural and drill-cutting sediments can be similar in colour [119].…”

Section: Seafloor Areas With Mineral Resourcesmentioning

confidence: 99%

Underwater Hyperspectral Imaging (UHI): A Review of Systems and Applications for Proximal Seafloor Ecosystem Studies

et al. 2021

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Marine ecosystem monitoring requires observations of its attributes at different spatial and temporal scales that traditional sampling methods (e.g., RGB imaging, sediment cores) struggle to efficiently provide. Proximal optical sensing methods can fill this observational gap by providing observations of, and tracking changes in, the functional features of marine ecosystems non-invasively. Underwater hyperspectral imaging (UHI) employed in proximity to the seafloor has shown a further potential to monitor pigmentation in benthic and sympagic phototrophic organisms at small spatial scales (mm–cm) and for the identification of minerals and taxa through their finely resolved spectral signatures. Despite the increasing number of studies applying UHI, a review of its applications, capabilities, and challenges for seafloor ecosystem research is overdue. In this review, we first detail how the limited band availability inherent to standard underwater cameras has led to a data analysis “bottleneck” in seafloor ecosystem research, in part due to the widespread implementation of underwater imaging platforms (e.g., remotely operated vehicles, time-lapse stations, towed cameras) that can acquire large image datasets. We discuss how hyperspectral technology brings unique opportunities to address the known limitations of RGB cameras for surveying marine environments. The review concludes by comparing how different studies harness the capacities of hyperspectral imaging, the types of methods required to validate observations, and the current challenges for accurate and replicable UHI research.

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Section: Seafloor Areas With Mineral Resourcesmentioning

confidence: 99%

Underwater Hyperspectral Imaging (UHI): A Review of Systems and Applications for Proximal Seafloor Ecosystem Studies

et al. 2021

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“…Figure 8 presents the development trend of underwater spectral imaging technology and the applications in the field of UHI technology in recent years. Most UHI applications have focused on habitat and sediment mapping in shallow and deep-sea areas; however, there are a few other applications that have explored the potential of UHI in the field of underwater archaeology, pipeline inspection, and seafloor drill cuttings survey [ 93 ]. Generally speaking, UHI has more advantages in some specific scenes.…”

Section: Discussionmentioning

confidence: 99%

Underwater Hyperspectral Imaging Technology and Its Applications for Detecting and Mapping the Seafloor: A Review

Liu

Men

et al. 2020

Sensors

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Common methods of ocean remote sensing and seafloor surveying are mainly carried out by airborne and spaceborne hyperspectral imagers. However, the water column hinders the propagation of sunlight to deeper areas, thus limiting the scope of observation. As an emerging technology, underwater hyperspectral imaging (UHI) is an extension of hyperspectral imaging technology in air conditions, and is undergoing rapid development for applications in shallow and deep-sea environments. It is a close-range, high-resolution approach for detecting and mapping the seafloor. In this paper, we focus on the concepts of UHI technology, covering imaging systems and the correction methods of eliminating the water column’s influence. The current applications of UHI, such as deep-sea mineral exploration, benthic habitat mapping, and underwater archaeology, are highlighted to show the potential of this technology. This review can provide an introduction and overview for those working in the field and offer a reference for those searching for literature on UHI technology.

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“…Drilling waste comprises 2 categories: drill cuttings and spendt drilling muds (Veil JA., 2002;Ellis et al, 2012;Cochrane et al, 2019).…”

Section: J O U R N a Lmentioning

confidence: 99%

Measuring the biological impact of drilling waste on the deep seafloor: An experimental challenge

Lelchat

Dussauze

Lemaire

et al. 2020

Journal of Hazardous Materials

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The depletion of traditional oil fields is driving the oil & gas industry to explore new exploitation sites previously considered as unprofitable. Deep-sea oil fields represent one of these new areas of exploitation. Well drilling during exploration and production operations generate large quantities of drilling waste whose biological impact on the deep-sea floor remains largely unknown. Because of the harsh abiotic factors characterizing this environment, the evaluation of this impact remains challenging. High hydrostatic pressure is the prominent factor which will affect in-situ biological processes. This review will examine the feedback on the various strategies used to evaluate the biological impact of deep-sea drilling waste deposition as well as the current technological limitations. Given the complexity of this issue, a good perspective strategy would be to trend towards the research and development of more relevant bioassays, especially considering the crucial factor of hydrostatic pressure.Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site.

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Detection of deposited drill cuttings on the sea floor - A comparison between underwater hyperspectral imagery and the human eye

Cited by 12 publications

References 29 publications

Underwater Hyperspectral Imaging (UHI): A Review of Systems and Applications for Proximal Seafloor Ecosystem Studies

Underwater Hyperspectral Imaging (UHI): A Review of Systems and Applications for Proximal Seafloor Ecosystem Studies

Underwater Hyperspectral Imaging Technology and Its Applications for Detecting and Mapping the Seafloor: A Review

Measuring the biological impact of drilling waste on the deep seafloor: An experimental challenge

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