Scientists announced Thursday that measurements from NASA's Cassini spacecraft detected hydrogen gas, a key energy source for microbial life, in a plume gushing from a vast liquid
water ocean buried beneath the icy shell of Saturn's moon Enceladus.
Not exact matches
This tidal energy produces more than enough internal heat to create a global
water ocean, possibly as thick in places as 50 kilometers,
buried under an outer layer of ice a few kilometers thick.
Scientists don't want to risk a run - in between Juno and any of the icy moons, such as Europa, which could conceivably harbor life in its
buried liquid
water ocean.
They found that adding five years of strong trade winds created powerful
ocean currents that
buried the warm surface
water, bringing cooler
water to the surface.
That's in contrast to some recent work that has suggested the Atlantic
Ocean is driving the slowdown by
burying the missing heat in its deep
waters.
Coastal
waters play an important role in the carbon cycle by transferring carbon to the open
ocean or
burying it in wetland soils and
ocean sediments, a new study shows.
They report in Global Biogeochemical Cycles that, of the carbon entering coastal
waters from rivers and the atmosphere, about 20 percent is
buried while 80 percent flows out to the open
ocean.
Eventually, it makes its way back to the surface as the
ocean's bottom
water circulates and rises anew near the equator (although carbon
buried in sediment might stay
buried longer).
Schmidt's work suggests that
water within Europa's ice shell, and perhaps in the
buried ocean, could be teeming with microbes — a development that has vaulted the intriguing moon into position as the next stop in the search for extraterrestrial life.
Without
ocean water to lubricate Earth's plate tectonics, the planet could seize up, preventing
buried carbon from returning to the air volcanically.
The answer is likely «both,» according to researchers at The Ohio State University — and the same amount of
water that currently fills the Pacific
Ocean could be
buried deep inside the planet right now.
Most methane hydrates are
buried in
ocean water so deep that the journey through the
water column is too far for the gas to ever reach the atmosphere, according to Ed Dlugokencky, a researcher at the National Oceanic and Atmospheric Administration.
Most of the deposits, some small and some large, are
buried in or below permafrost and sediments in the
ocean bottom along continental margins — where shallow offshore
waters slope down toward the deeper
ocean floor.
It also would be far easier to get a
water sample from Enceladus, which has plumes of
water vapor, ice and particles shooting more than 300 miles off its surface, than from other moons, such as Jupiter's Europa, where a massive
ocean is believed to be
buried beneath a thick icy crust.
Ocean currents kept sediment from
burying the wreck, and deep
water protected it from surface storms.
Further work by Cassini indicated that this
water is coming from a
buried ocean, which likely contains a source of chemical energy for microbes, if any ever evolved on that distant moon.
With the rising levels of BPA and other plastic chemicals found in our groundwater,
ocean water, and even
buried under 30 feet of ice at the south pole, experts warn that these chemicals may be contributing to the rising health problems we are seeing worldwide.
An increase in temperature or a decrease in pressure in the
ocean waters overlying these sediments can melt this
buried methane and allow it to bubble to the surface.
I had a fascinating and fruitful chat with Yair Rosenthal of Rutgers and Braddock Linsley of Columbia University — two authors of an important new Science paper extracting 10,000 years of temperature changes in fairly deep Pacific
Ocean waters from fossil plankton
buried in the seabed off Indonesia.