Discovery of Massive ocean beneath the Earth's crust

Scientists discovered Massive ocean hidden 700km below Earth's surface : Containing more water than on the surface  

Scientists have unearthed a massive underground ocean located 700 km's beneath Earth’s surface, found within ringwoodite’s crystalline structure. This hidden ocean, thrice the size of our surface oceans, may revolutionize our comprehension of Earth’s water cycle. Researchers used seismic data from earthquakes to identify these water-rich rocks, with further studies planned to understand its global impact. It feels like there have been staggering science stories emerging every other day recently, all of which have blown our tiny little minds. First, there was the discovery of a terrifying black hole pointing right at us, then there was a huge hole found in the sun and a missing continent found after going missing for 375 years. Now, people are only just realising that there’s a massive ocean hidden under the Earth’s crust.

Scientists have discovered a vast underground ocean located below the Earth's surface. This new finding reveals an ocean three times larger than all the Earth's surface oceans combined. However, this ocean is different from what we usually think of as an ocean. It turns out there’s a huge supply of water 400 miles underground stored in rock known as 'ringwoodite'. Scientists previously discovered that water is stored inside mantle rock in a sponge-like state, which isn’t a liquid, solid or a gas, but instead a fourth state. The scientific paper titled ‘Dehydration melting at the top of the lower mantle’ was published earlier and laid out the findings. There's three times as much water below the surface than in the oceans.  Instead of liquid water, this underground ocean consists of water trapped in the crystalline structure of a blue mineral called ringwoodite. The research team, led by geophysicist Steven Jacobsen, used seismic data from thousands of earthquakes to uncover this hidden reservoir.

"The ringwoodite is like a sponge, soaking up water, there is something very special about the crystal structure of ringwoodite that allows it to attract hydrogen and trap water," said geophysicist Steve Jacobsen. "This mineral can contain a lot of water under conditions of the deep mantle,” added Jacobsen, who was part of the team behind the discovery. He added: "I think we are finally seeing evidence for a whole-Earth water cycle, which may help explain the vast amount of liquid water on the surface of our habitable planet. Scientists have been looking for this missing deep water for decades." The defining feature of this underground ocean is its crystallized water form, which is locked within the molecular structure of ringwoodite. This unique form of water storage challenges previous theories about Earth's water reservoirs.

This discovery could change our understanding of Earth's water cycle. Jacobsen’s team conducted their analysis by using about 2,000 seismographs across the US to monitor seismic waves generated by around 500 earthquakes. They studied how these waves travelled through the Earth and detected water-rich rocks deep beneath the surface. Although this reservoir is not an ocean in the traditional sense, its implications are significant. Scientists believe that this hidden water might play a crucial role in stabilizing surface oceans by regulating Earth's overall water cycle. Scientists made the findings at the time after studying earthquakes and discovering that seismometers were picking up shockwaves under the surface of the Earth. From that, they were able to establish that the water was being held in the rock known as ringwoodite. If the rock contained just 1 per cent water, it would mean that there is three times more water under the surface of the Earth than there is in the oceans on the surface.

One of the key questions that remain is how this underground ocean affects the rest of the planet. Jacobsen’s team plans to expand their research by collecting seismic data from other parts of the world. They aim to determine whether the melting of the Earth's mantle, influenced by this trapped water, is a global phenomenon or restricted to certain regions. According to the researchers, “The results of this research could offer critical insights into Earth's geological processes and water cycle.” It’s not the only significant discovery made by scientists recently, either. In fact, researchers found an entirely new ecosystem when turning over volcanic crust with the aid of an underwater robot, showing that even now, nature has many more secrets to unearth. Further research will shed more light on how water moves through Earth's layers and its broader implications.