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The Challenges of Remotely Measuring Oil Slick Thickness

Spill Science, Edmonton, AB T6W 1J6m, Canada
Remote Sens. 2018, 10(2), 319; https://doi.org/10.3390/rs10020319
Received: 18 January 2018 / Revised: 30 January 2018 / Accepted: 13 February 2018 / Published: 20 February 2018
(This article belongs to the Special Issue Oil Spill Remote Sensing)
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Abstract

The thickness of oil spills on the sea is an important but poorly studied topic. Means to measure slick thickness are reviewed. More than 30 concepts are summarized. Many of these are judged not to be viable for a variety of scientific reasons. Two means are currently available to remotely measure oil thickness, namely, passive microwave radiometry and time of acoustic travel. Microwave radiometry is commercially developed at this time. Visual means to ascertain oil thickness are restricted by physics to thicknesses smaller than those of rainbow sheens, which rarely occur on large spills, and thin sheen. One can observe that some slicks are not sheen and are probably thicker. These three thickness regimes are not useful to oil spill countermeasures, as most of the oil is contained in the thick portion of a slick, the thickness of which is unknown and ranges over several orders of magnitude. There is a continuing need to measure the thickness of oil spills. This need continues to increase with time, and further research effort is needed. Several viable concepts have been developed but require further work and verification. One of the difficulties is that ground truthing and verification methods are generally not available for most thickness measurement methods. View Full-Text
Keywords: slick thickness; oil spill thickness; slick thickness measurement slick thickness; oil spill thickness; slick thickness measurement
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Fingas, M. The Challenges of Remotely Measuring Oil Slick Thickness. Remote Sens. 2018, 10, 319.

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