Fiery eruptions that happen on the seafloor of our planet are very sensitive and responsive to the tides and also the ice ages that have made quite an impression on them through the years. Geophysical Research Letters has published this week a new study that has in the center of attention exactly this fact. One of the co-authors of the research is Maya Tolstoy, a marine geophysicist at Columbia University’s Lamont-Doherty Earth Observatory, who has succeeded in drawing some important conclusion after she observed approximately ten seafloor eruptions and their seismic records. Their turbulent tendency seems to be happening once at two weeks, near “neap” tide. In this particular cases, the seawater over the volcanoes is a considerably lower than other periods of time.
As a result of the diminished weight of the volcano, earthquakes start happening and from time to time, that leads to eruptions. Furthermore, the movement of the Earth and the Sun is very important: the eruptions have happened in the first six months of the year, when the Earth draws away from the Sun. In addition, the movement that is has around the sun every 100.000 years causes shifts that lead to ice ages and warm period that affect the rise in global sea level. Mrs. Maya Tolstoy has found out that there are connections between ice age cycles and these seafloor corrugations that extend back 800,000 years.
“Seafloor spreading is considered a small but steady contributor of CO2to climate cycles on the 100 kyr time scale, however this assumes a consistent short-term eruption rate. Pulsing of seafloor volcanic activity may feed back into climate cycles, possibly contributing to glacial/inter-glacial cycles, the abrupt end of ice ages, and dominance of the 100 kyr cycles.”
The results of this research make the scientists believe that as the sea level rise because of the climate changes, they could simulate underwater volcanic activity and coming as a circle, this particular thing could influence the climate of the Earth in the future. Study author John Crowley, from Department of Earth Sciences at the University of Oxford says that people usually analyze what happens on the surface of the Earth and what happens in the interior of the Earth separately.
“People doing climate modeling won’t include what’s happening under the ground and then people underground ignore what’s on the surface. But there’s actually a strong link between the two.”
Image Source: National Science Foundation