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☆ Mars could be creating 'giant whirlpools' deep within our planet's oceans
▼ + stars: | 2024-03-13 | by ( Marianne Guenot | ) www.businessinsider.com time to read: +5 min

Mars may be 140 million miles away, but its gravitational pull could be impacting Earth's oceans. Scientists at the University of Sydney in Australia believe the red planet's tug is creating "giant whirlpools" in the oceans called eddies, which can shift the deep-sea floor. This, they claim, is part of a 2.4-million-year climate "grand cycle" on Earth that has been ongoing for at least 40 million years. The red planet's orbit and ours are locked in an intricate dance, and every so often, these line up so that Mars' gravitational pull on Earth is just a little more intense — this is called resonance. This information is crucial when refining models helping us see how our planet's intricate climate will progress over time.

Persons: Adriana Dutkiewicz, NASA's, Dietmar Müller, Malin, Matthew England, Benjamin Mills, wasn't, Mills Organizations: Service, University of Sydney, Business, NASA's Goddard Space, geosciences, Nature Communications, Mars NASA, JPL, Systems, University of New, New, University of Leeds Locations: Australia, Japan, New, University of New South Wales, Sydney

☆ Mars could be driving ‘giant whirlpools’ in the Earth’s deep oceans, new study finds
▼ + stars: | 2024-03-12 | by ( Laura Paddison | ) edition.cnn.com time to read: +5 min

CNN —Mars may be around 140 million miles away from Earth, but the red planet is influencing our deep oceans by helping drive “giant whirlpools,” according to new research. The sediments revealed that deep-sea currents weakened and strengthened over 2.4 million-year climate cycles, according to the study published Tuesday in the journal Nature Communications. For the Earth, this interaction with Mars translates to periods of increased solar energy — meaning a warmer climate — and these warmer cycles correlate with more vigorous ocean currents, the report found. The authors describe these currents, or eddies, as “giant whirlpools” that can reach the bottom of the deep ocean, eroding the seafloor and causing large accumulations of sediments, like snowdrifts. Deep-sea sediments build in continuous layers during calm conditions but strong ocean currents disrupt this, leaving a visible stamp of their existence.

Persons: Adriana Dutkiewicz, sedimentologist, ”, Dietmar Müller, Müller, “, ” Müller, Joel Hirschi Organizations: CNN, Nature Communications, University of Sydney, Atlantic, National Oceanography

☆ Earth's deep blue oceans are fading and changing color — and scientists aren't sure why
▼ + stars: | 2023-09-04 | by ( Marianne Guenot | ) www.businessinsider.com time to read: +5 min

Two decades of satellite images have revealed that more than 56% of the world's oceans have seen significant changes in color. Scientists fear these color changes could be harbingers of yet another global crisis in ocean food chains as the planet warms. Greener oceans mean more life — and that's not necessarily goodThe color of the oceans can tell us a lot about their health. The ocean's color depends on what's in the upper layer of the water column. In the latest study, scientists used imagery from NASA's Aqua satellite, which has been monitoring ocean color changes for more than two decades.

Persons: It's, it's, Cael, that's, Stephanie Dutkiewicz, Dutkiewicz, I've, Michael J Behrenfeld Organizations: Service, Nature, National Oceanography Center, Guardian, MIT's Department of, Planetary Sciences, Center for Global Change Science, CNN, Oregon State University Locations: Southampton

☆ Climate change is making our oceans change color, new research finds
▼ + stars: | 2023-07-12 | by ( Jack Guy | ) edition.cnn.com time to read: +4 min

CNN —The color of the ocean has changed significantly over the last 20 years and human-caused climate change is likely responsible, according to a new study. They analyzed color variation data from 2002 to 2022 and then used climate change models to simulate what would happen to the oceans both with additional planet-heating pollution and without. The color changes matched almost exactly what Dutkiewicz predicted would happen if greenhouse gases were added to the atmosphere – that around 50% of our oceans would change color. Dutkiewicz, who has been running simulations that showed the oceans were going to change color for years, said she is not surprised at this finding. Dutkiewicz told CNN it was difficult to say whether color changes could become visible to humans if the process continues.

Persons: Artur Widak, Stephanie Dutkiewicz, Dutkiewicz, ” Organizations: CNN, National Oceanography Center, Massachusetts Institute of Technology, MIT’s Department of, Planetary Sciences, Center for Global, Aqua

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