In winter, the air temperature above the sea ice can be below -20C, whereas the sea water is only about -1.9C. Heat flows from the warmer sea up to the very cold air, forming new ice from the bottom. The salt in this newly formed ice is concentrated and pushed into the brine channels. And because it is very cold and salty, it is denser than the water beneath.
The result is the brine sinks in a descending plume. But as this extremely cold brine leaves the sea ice, it freezes the relatively fresh seawater it comes in contact with. This forms a fragile tube of ice around the descending plume, which grows into what has been called a brinicle.
Check out that BBC website link for more information on how the Frozen Planet videographers captured this footage. That's also where you should go to watch the video when this YouTube version is inevitably taken down.
The deadly 2013 El Reno tornado was 2.5 miles (4 km) wide and killed a team of tornado experts. But as Anton Seimon explains, his colleagues turned that tragedy into an opportunity to confirm a key element of tornado formation.
Some snakes have evolved the ability to glide through the air. For example, paradise tree snakes in southeastern Asia can launch off from a branch and fly as far as 10 meters. Scientists have known that the snakes flatten their bodies to gain lift but new research reveals that they also undulate their bodies as […]
We humans are castaways on an ocean of uncertainty. Since the beginnings of history, our ancestors sought knowledge and understanding about their lives, their relationship with the cosmos, and perhaps take a peek into their future. In such effort—long before the answers of science—earthlings developed a rich variety of divination practices and systems. Many forms […]
We’ve all had those nights where we’re working on a laptop or scrolling through our phone before glancing at the time to find it’s actually a lot later than we thought. Most nights, you’d be fast asleep or at least dead tired at midnight or 1 or 3 a.m. But after staring at a screen, […]
If you’re a fan of ABC’s entrepreneurial feeding frenzy “Shark Tank,” then you know complete buyout offers from the expert Sharks don’t happen all that often. But back in 2017, that’s exactly what happened when inventor Logan Riley debuted his instantly eye-catching creation the RokBlok to the agog Sharks. Part of the reason that happened […]
Back in the 50s and 60s, it was no big deal in most areas to make a call to your local liquor store and have beer, wine and spirits delivered right to your house with little to no restriction. However, that ease and simplicity certainly isn’t in place today. Alcohol delivery laws in 2020 are […]