Nearshore dynamics of artificial sand and oil agglomerates

Dalyander, P. Soupy; Plant, Nathaniel G.; Long, Joseph W.; McLaughlin, M. R.

doi:10.1016/j.marpolbul.2015.04.049

Cited by 7 publications

(5 citation statements)

References 81 publications

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“…These results were verified by field observations of SOA distributions by Dalyander et al (). In order to further verify the results of this study, Dalyander et al () generated artificial SOAs using paraffin wax and sand and released them in nearshore environments to observe their dynamics. This study found that the lowest estimations of critical stress that were used in the previous model are best suited for predicting the movement of SOAs present on the surface of the seabed.…”

Section: Formationmentioning

confidence: 79%

“…Therefore, we propose a term, “sediment‐oil agglomerates (SOAs)” to refer to these residues. This is a slight modification on the term “sand and oil agglomerates (SOAs)” used recently by Dalyander et al (). This term has the advantage of using an acronym that is consistent with recently published literature, while accounting for the fact that these residues may be formed with sediments that can be mixture of sand, clay, and/or other particulate matter.…”

Section: Terminologymentioning

confidence: 99%

“…These aggregates are referred to as “asphalt pavements,” since they form a hard crust of weathered oil on their exterior, which shelters partially weathered oil on their interior (Owens et al, ). More recently, Dalyander et al () introduced another term, “sand and oil agglomerates (SOA),” to describe both SRBs and SOMs, and Bhattacharya et al () used the term “submerged residual oil mat” instead of SOM. It should be noted that currently the terms SRB, SRP, and SOM are almost exclusively used to describe Deepwater Horizon residues.…”

Section: Terminologymentioning

confidence: 99%

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Formation, Fate, and Impacts of Microscopic and Macroscopic Oil‐Sediment Residues in Nearshore Marine Environments: A Critical Review

Gustitus

Clement

2017

Reviews of Geophysics

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Crude oil that is spilled in marine environments often interacts with suspended sediments to form residues that can impact the recovery of the affected nearshore ecosystems. When spilled oil and sediment interact, they can form either small microscopic aggregates, commonly referred to as oil‐particle aggregates, or large macroscopic agglomerates, referred to as sediment‐oil agglomerates or sediment‐oil mats. Although these different sized oil‐sediment residues have similar compositions, they are formed under different conditions and have different fates in nearshore environments; the goal of this review is to synthesize our current understanding of these two types of residues. We believe that researchers who focus solely on studying either microscopic aggregates or macroscopic agglomerates could benefit from understanding the research findings available in the other field. In this study, we compare and contrast various processes that control the formation, fate, and impacts of these two types of residues in nearshore environments and point out some of the knowledge gaps in this field. Additionally, these residues have been referred to by many names in the past, leading to confusion and misconceptions at times. In this effort, we recommend a uniform nomenclature to distinguish them based on their physical size. Our overall aim is to bridge the gap between microscopic and macroscopic oil‐sediment residue literature to foster a robust exchange of ideas, which we believe can lead to the development of efficient strategies for managing oil spills that affect nearshore environments.

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Section: Formationmentioning

confidence: 79%

Section: Terminologymentioning

confidence: 99%

Section: Terminologymentioning

confidence: 99%

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Formation, Fate, and Impacts of Microscopic and Macroscopic Oil‐Sediment Residues in Nearshore Marine Environments: A Critical Review

Gustitus

Clement

2017

Reviews of Geophysics

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“…The mixture can eventually accumulate other low-energy areas, such as inside a tidal inlet. Daylander et al [28,35] reported that, during the Deepwater Horizon spill, more SRBs were observed in down-current inlets than in the surrounding Gulf-facing beaches. Broken-up SOMs can also continue to slowly spread as smaller "tarballs" that can become re-deposited on beaches down current.…”

Section: Sediment Dynamicsmentioning

confidence: 99%

A Response Guide for Sunken Oil Mats (SOMs): Formation, Behavior, Detection, and Recovery

Michel

Bambach

2022

JMSE

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Based on past spills, the conditions under which floating oil mixes with enough sand to form sunken oil mats (SOMs) are identified. SOMs form mostly during spills of heavy crudes or heavy fuel oils, but also highly weathered and viscous crude oils. They usually form when oil and sand are both suspended in the water column by breaking waves or by the erosion of heavily oiled sand from the beach. The oil–sand mixture needs an area in the nearshore where it can accumulate into mats, such as in troughs or inside lagoons, where wave energy is reduced. SOMs can be oily (>40% oil) or sandy (<<40% oil), with oily SOMs posing risks of the oil separating from the sand and refloating. Methods are described for SOMs detection and recovery based on their location, in either the surf zone or the open-water environment seaward of the surf zone. A matrix provides guidance on methods based on effectiveness and environmental impacts for different site conditions.

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“…In contrast, artificial sand is essentially manufactured or processed to have appropriate particle sizes required for the intended utilization. Most studies related to artificial sand in civil engineering have focused on the comparison of strength property between natural sand-based concrete and artificial sand-based concrete [1][2][3][4][5][6][7]. In addition, several works on the equipment design and analysis have been reported to enhance the production efficiency of an artificial sand manufacturing facility [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Vibration Diagnosis of Sand Units in a Stone Crusher Plant: An On-Site Field Test

Kim

Jung

et al. 2020

Applied Sciences

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Due to the shortage of natural sand from rivers and seas, artificial sand production from large stones or rocks is being increased. However, this sand manufacturing process is dangerous and causes several social problems such as a high level of unwanted vibrations or noises. This study investigates the vibration characteristics of sand and screen units in an artificial sand production plant whose operation is multiple with several actuators different exciting frequencies. As a first step, vibration levels are measured at the sand and screen unit positions using accelerometers in time and frequency domains. The measurement is carried out at two different conditions: activating only the sand unit and operating entire facilities such as a stone crusher. Vibration signals acquired from several locations of the sand and screen units of the plant are collected and analyzed from waveforms and spectrums of the signals. We identified that the vibration acceleration level of the screen unit is higher than that of the sand unit. In addition, it is found from the acceleration signals measured at the plant office and shipping control center (which are far away from the plant location) that the beating phenomenon arose due to close driving frequencies for several sand units. In this work, the vibration caused from the beating is significantly reduced by adjusting the driving frequencies for the sand units so that they are sufficiently scattered to avoid the beating.

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Nearshore dynamics of artificial sand and oil agglomerates

Cited by 7 publications

References 81 publications

Formation, Fate, and Impacts of Microscopic and Macroscopic Oil‐Sediment Residues in Nearshore Marine Environments: A Critical Review

Formation, Fate, and Impacts of Microscopic and Macroscopic Oil‐Sediment Residues in Nearshore Marine Environments: A Critical Review

A Response Guide for Sunken Oil Mats (SOMs): Formation, Behavior, Detection, and Recovery

Vibration Diagnosis of Sand Units in a Stone Crusher Plant: An On-Site Field Test

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