The Red Planet Mars is playing a crucial role in shaping deep ocean currents on Earth, according to a new study published in the journal Nature Communications. Researchers from the University of Sydney analyzed sediments from deep-sea sites over the past 50 years and found that deep-sea currents fluctuate in strength over 2.4 million-year climate cycles.
The study reveals that the interactions between Mars and Earth as they orbit the Sun create a phenomenon known as resonance, affecting the shape of their orbits and influencing ocean currents on Earth. This gravitational push and pull between the two planets result in periods of higher solar energy, leading to warmer climates and more vigorous ocean currents.
The researchers describe these currents as “giant whirlpools” that can reach the bottom of the deep ocean, eroding the seafloor and leaving behind large accumulations of sediment. By studying these sediment cores, scientists were able to map these strong eddies and understand changes in ocean circulation over millions of years.
While these natural climate cycles affect ocean warming and currents, they are distinct from the rapid warming caused by human activities like burning fossil fuels. The study provides valuable insights into how the oceans function in a warmer world and suggests that these eddies could potentially mitigate the impacts of a possible collapse of the Atlantic Meridional Overturning Circulation (AMOC), a crucial ocean current system.
Experts caution that further research is needed to fully understand the effects of these deep ocean currents and their potential role in shaping future climate outcomes. The study’s findings raise important questions about the complex interactions between distant planets and their impact on Earth’s deep oceans.