AI Article Synopsis
- Sea water ice contains brine-filled pockets within a solid ice matrix, creating a complex pore structure.
- A portable unilateral NMR instrument was used to study brine inclusions in stationary seawater ice and seawater spray ice at temperatures between -6 °C and -16 °C.
- The findings indicate that brine content and temperature distribution vary based on the type of ice and its orientation, with horizontal spray ice showing a higher brine content than vertical spray ice.
Article Abstract
Sea water ice has a complicated pore structure consisting of brine-filled pockets within a solid ice matrix. In this work, an unilateral Nuclear Magnetic Resonance instrument was used to characterize the evolution of sea-ice brine inclusions in two types of ice: stationary seawater ice and seawater spray ice formed by periodic spraying on horizontal and vertical surfaces. The portable unilateral NMR was capable of measuring very low amounts of brine (<10% of the water-filled volume). CPMG experiments were performed to extract the information on brine content and T distribution at temperatures between -6 °C and -16 °C. 1D imaging was used to spatially resolve the ice brine accumulation. The results show that the seawater spray ice growth, brine content (greater for the horizontal orientation than for the vertical one), and T distribution (unimodal for stationary ice and bimodal for spray ice) depend on temperature and surface orientation.
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| http://dx.doi.org/10.1016/j.jmr.2021.107109 | DOI Listing |
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