[en] Subsidence in Burgan oil field of Kuwait has been studied by Interferometric technique using Synthetic Aperture Radar data. Repeat pass Interferometry is applied to the study area that accounts for infinitesimal changes in the topographic elevations. Subsidence of about 27 mm over a period of 3 years was estimated in Burgan oil field area. The study is significant since continued subsidence may result in reduction of porosity of host formation and may activate the sub-surface geological structures, which can compromise the integrity of the reservoir seal, leading to migration of hydrocarbons to other formations and areas

[en] Highlights: • This is the first baseline for ²¹⁰Po in calanoid copepods from northern Gulf. • ²¹⁰Po concentration in copepods is an order of magnitude higher than in phytoplankton. • The concentration factor varies between 0.8 and 5.3 ∗ 10⁵. • The study provides a more realistic basis for reference CF value for copepods. - Abstract: Copepods are the most abundant metazoans, forming a vital food chain link between the primary producers the phytoplankton and fish. This study presents baseline information on the concentration of ²¹⁰Po among calanoid copepods isolated from the Kuwait marine area. The concentration of ²¹⁰Po in six species of copepod, including Subeucalanus flemingeri, Parvocalanus crassirostis, Acartia pacifica, Calanopia elliptica, Acrocalanus gibber, and Euterpina acutifrons were 151.3–158.8 Bq kg⁻¹ wwt, 121.1–129.5 Bq kg⁻¹ wwt, 51.23–54.91 Bq kg⁻¹ wwt, 38.88–40.09 Bq kg⁻¹ wwt, 38.07–38.29 Bq kg⁻¹ wwt, and 33.46–36.50 Bq kg⁻¹ wwt, respectively. The ²¹⁰Po concentration in seawater shows a seasonal variation, with a higher concentration range of 0.58–0.70 mBq L⁻¹ during summer and autumn, while a lower concentration is found (0.30–0.38 mBq L⁻¹) during winter and spring. The concentration factor among the copepods varies between 8 ∗ 10⁴ and 5 ∗ 10⁵ that is an order of magnitude higher than the diatoms and dinoflagellates.

[en] Highlights: • This is the first experimental assessment on loss of ²¹⁰Po in seafood from Kuwait. • The Study provides a realistic assessment of dose to humans from cooked seafood. • The seafood consumption in Kuwait varied between 35 and 203 g. • The CED in Kuwait varies between 37 and 240 μSv.y-1 from seafood consumption. - Abstract: An experimental study was conducted to assess loss of ²¹⁰Po due to cooking fresh seafood, and provide a more realistic and reliable dose estimate that humans may receive from consuming cooked seafood. Fresh fish and shrimp samples from Northern Gulf waters were grilled and boiled to simulate the effect of different cooking methods. Sixteen different species of fish were compared and significant differences in ²¹⁰Po concentration in uncooked samples were observed between species (ANOVA I, F_15,79 = 362.81, p 210Po concentration ranging from 14 to 58% compared to the uncooked samples, with no difference between grilled or boiled treatments. The effect of the cooking and shrimp treatment on ²¹⁰Po concentration was tested using ANOVA II after logarithmic transformation. Cooking led to a significant 38% reduction of ²¹⁰Po concentration as compared to uncooked treatments with no difference between grilled and boiled samples (ANOVA I: F_3,99 = 14.72, p 210Po concentration as compared to all other treatments. As a consequence, cooked deveined shrimp contained an 84% lower ²¹⁰Po concentration than whole uncooked shrimp. As ²¹⁰Po is known to be the major contributor to radiation dose in humans consuming seafood, based on the results obtained, it is evident there is a need to re-examine how committed effective doses (CEDs) are best calculated for seafood consuming populations considering that most populations consume fish and shellfish cooked.