The reservoir is 4.4 times larger than the shallow magma chamber.
The reservoir is having huge amount of magna and it is believed that it can fill the 4,170 cubic km Grand Canyon 11.2 times and the known magma chambers magma could fill Grand Canyon 2.5 times.
The researchers have used seismic imaging of Yellowstone’s volcanic plumbing system discover the reservoir.
The plumbing system is similar to medical CT scan but instead of using X-rays it used earthquake waves to distinguish rock of various densities.
Hsin-Hua Huang, a postdoctoral researcher of the University of Utah and first author of the study said that it is the first time where they have imaged continuous volcanic plumbing system under Yellowstone.
Huang said, “That includes the upper crustal magma chamber we have seen previously plus a lower crustal magma reservoir that has never been imaged before and that connects the upper chamber to the Yellowstone hotspot plume below.”
Generally a popular perception that the magma chamber and magma reservoir are filled will molted rock, but it is not true.
Researchers have found that rock is hot, it is mostly solid and spongelike, and having pockets of molten rock within it.
Researchers found that the upper magma changer is having an average of about nine percent of molten rock and the findings are consistent with the earlier estimates of five to fifteen percent of molten rock.
In the lower magma reservoir the molten rock makes two percent.
Researchers found that the previously known upper magma chamber was the immediate source of three cataclysmic eruption of Yellowstone caldera which occurs in 2 million, 1.2 million and 640,000 years ago.
Fan-Chi Lin, assistant professor at the University of Utah and coauthor of the study said the findings have no relation to the supervolcano eruption in the US national park.
The supervolcano eruption is the world’s largest supervolcanoes, with frequent earthquakes and the most vigorous continental geothermal system.
The supervolcano eruption at the Yellowstone has covered much of North America in ash, there were three eruptions.
Researchers say that a supervolcano eruption today would be cataclysmic, but there is only 1 in 700,000 chances annually.
Researchers said the mystery why Yellowstone’s soil and geothermal emits more carbon dioxide than which can be explained by the gases from the upper magma chamber.