Bayesian identification of oil spill source parameters from image contours

Embargo End Date
2023-06-04

Type
Article

Authors
El Mohtar, Samah
Ait-El-Fquih, Boujemaa
Knio, Omar
Lakkis, Issam
Hoteit, Ibrahim

KAUST Department
Earth Fluid Modeling and Prediction Group
Earth Science and Engineering Program
Physical Science and Engineering (PSE) Division

KAUST Grant Number
OSR-CRG2018-3711
REP/1/3268-01-01

Online Publication Date
2021-06-04

Print Publication Date
2021-08

Date
2021-06-04

Submitted Date
2020-09-07

Abstract
Oil spills at sea pose a serious threat to coastal environments. Identifying oil pollution sources could help to investigate unreported spills, and satellite imagery can be an effective tool for this purpose. We present a Bayesian approach to estimate the source parameters of a spill from contours of oil slicks detected by remotely sensed images. Five parameters of interest are estimated: the 2D coordinates of the source of release, the time and duration of the spill, and the quantity of oil released. Two synthetic experiments of a spill released from a fixed point source are investigated, where a contour is fully observed in the first case, while two contours are partially observed at two different times in the second. In both experiments, the proposed method is able to provide good estimates of the parameters along with a level of confidence reflected by the uncertainties within.

Citation
El Mohtar, S., Ait-El-Fquih, B., Knio, O., Lakkis, I., & Hoteit, I. (2021). Bayesian identification of oil spill source parameters from image contours. Marine Pollution Bulletin, 169, 112514. doi:10.1016/j.marpolbul.2021.112514

Acknowledgements
We thank Prof. Håvard Rue for suggestions related to MCMC. We also thank Dr. Yanhui Zhang for helpful discussions related to the Hausdorff distance. Research reported in this publication was supported by the Office of Sponsored Research (OSR) at King Abdullah University of Science and Technology (KAUST) under Award No. OSR-CRG2018-3711 and under the Virtual Red Sea Initiative (Grant #REP/1/3268-01-01).

Publisher
Elsevier BV

Journal
Marine Pollution Bulletin

DOI
10.1016/j.marpolbul.2021.112514

Additional Links
https://linkinghub.elsevier.com/retrieve/pii/S0025326X21005488

Permanent link to this record