Group items tagged

Honolulu, HI - Commercial ships travel across most of the globe and could provide better warnings for potentially deadly tsunamis, according to a study published May 5 by scientists at the University of Hawaii - Manoa (UHM) and the National Oceanic and Atmospheric Administration's Pacific Tsunami Warning Center.

Football-size robot can skim discreetly along a ship's hull to seek hollow compartments concealing contraband.

En vidéo : embarquez sur un navire construit en 2025.

New satellite imaging concept could significantly reduce search areas for missing boats and planes.

One Sea Autonomous Shipping Alliance Welcomes Three New Members.

New Center of Expertise will provide opportunities for identification, evaluation and transition of new blue technologies.

Icing of seawater droplets is capable of causing catastrophic damage to vessels, buildings, and human life, yet it also holds great potential for enhancing applications such as droplet-based freeze desalination and anti-icing of sea sprays. While large-scale sea ice growth has been investigated for decades, the icing features of small salty droplets remain poorly understood. Here, we demonstrate that salty droplet icing is governed by salt rejection-accompanied ice crystal growth, resulting in freezing dynamics different from pure water. Aided by the observation of brine films emerging on top of frozen salty droplets, we propose a universal definition of freezing duration to quantify the icing rate of droplets having varying salt concentrations. Furthermore, we show that the morphology of frozen salty droplets is governed by ice crystals that sprout from the bottom of the brine film. These crystals grow until they pierce the free interface, which we term ice sprouting. We reveal that ice sprouting is controlled by condensation at the brine film free interface, a mechanism validated through molecular dynamics simulations. Our findings shed light on the distinct physics that govern salty droplet icing, knowledge that is essential for the development of related technologies.

Brooke FLAMMANG, a biologist at New Jersey Institute of Technology (NJIT), has been awarded nearly $680,000 from the National Oceanic and Atmospheric Administration (NOAA) as part of a growing nationwide effort to save the critically endangered North Atlantic right whale (Eubalaena glacialis).