Comment Re:Hmm, it's fracking! (Score 1) 106
Comment Re:Hmm, it's fracking! (Score 1) 106
Comment Re:Hmm, it's fracking! (Score 4, Informative) 106
Submission + - A primary marker at Crawford Lake, Canada, starts the Anthropocene epoc (sciencedaily.com)
The team has gathered core sample sections from a variety of environments around the world, from coral reefs to ice sheets. Samples from a range of these sites were then sent for analysis to the University of Southampton's GAU-Radioanalytical labs at the National Oceanography Centre in Southampton. Researchers there processed the samples to detect a key marker of human influence on the environment — the presence of plutonium.
Professor Andrew Cundy, Chair in Environmental Radiochemistry at the University of Southampton and member of the Anthropocene Working Group, explains: "The presence of plutonium gives us a stark indicator of when humanity became such a dominant force that it could leave a unique global 'fingerprint' on our planet.
Other geological indicators of human activity include high levels of ash from coal-fired power stations, high concentrations of heavy metals, such as lead, and the presence of plastic fibres and fragments. These coincide with 'The Great Acceleration' — a dramatic surge across a range of human activity, from transportation to energy use, starting in the mid-20th century and continuing today.
Comment Believe it or not this is helpful (Score 1) 12
Comment Second Life (Score 1) 11
Submission + - Every Patch For 'KRACK' Wi-Fi Vulnerability Available Right Now (zdnet.com)
Comment geologically instantaneous is nothing new (Score 2) 256
Comment Re:Let me tell you about neutrality (Score 1) 126
Comment Was this the cause of the explosion? (Score 1) 320
Submission + - Tectonic ocean plate margins maybe a large source of hydrogen gas
"A major benefit of this work is that it provides a testable, tectonic-based model for not only identifying where free hydrogen gas may be forming beneath the seafloor, but also at what rate, and what the total scale of this formation may be, which on a global basis is massive," said [researcher] Lincoln F. Pratson[.]
"Most scientists previously thought all hydrogen production occurs only at slow-spreading lithosphere, because this is where most serpentinized rocks are found. Although faster-spreading lithosphere contains smaller quantities of this rock, our analysis suggests the amount of H2 produced there might still be large," [researcher Stacy] Worman said.
[S]cientists need to understand where the gas goes after it's produced. "Maybe microbes are eating it, or maybe it's accumulating in reservoirs under the seafloor. We still don't know," Worman said. "Of course, such accumulations would have to be quite significant to make hydrogen gas produced by serpentinization a viable fuel source."
Comment Re:How do they know it works? (Score 2) 152
Comment Re:How do they know it works? (Score 2) 152
Comment Re:Other uses for this technology (Score 5, Informative) 169
Seems like it might be useful for finding downed aircrafts and other missing objects....maybe even people?
Great thought, but the time to process lidar data takes a while. So planes and objects sure, but even the logistics to get this done takes time. Not sure about people, due to resolution over a vast area and again logistics. The bare-earth relief (which strips away a degree of vegetation) lidar offers is incredible. Cartographers and geologist have only recently really taken advantage of the technology. But in time and $, these other uses could definitely be considered, especially when resolution and processing is more developed.