Gold has both economic and cultural significance to human societies but, as Liang Zhang and David Groves explain, we owe its presence in the Earth’s crust to repeating cycles of plate tectonics. Liang Zhang &David I. Groves Research Briefing|07 November 2024 ...
But planetologists have discovered that Earth's very presence in this Goldilocks zone is itself due to an amazing stroke of luck. When the Solar System was still young, this zone came close to being taken over by the planet Jupiter.但行星学家发现，地球出现在这片“宜居带”本身就有惊人的运...
Nevertheless, as illustrated in Box 1 GC is limited to lagged causal dependencies and, furthermore, has known deficiencies in the presence of subsampled time series and other issues38. GC has a long history of applications across a wide range of scientific domains, including Earth system science...
too. If that's the case, the giant impact hypothesis could solve a mystery that has bothered scientists for more than a decade: the presence of dense, continent-sized blobs of material,
- 《Journal of Applied Polymer Science》 被引量: 33发表: 2010年 Brønsted acid-free controlled polymerization of tetrahydrofuran catalyzed by recyclable rare earth triflates in the presence of epoxides We report a series of novel, highly efficient, hydrolytically stable and recyclable Lewis acid ...
Good agreement between modelled and observed PSP was reached when impedance peaks related to major changes of subsurface geological conditions were included. The large PSP could therefore be attributed to the presence of resistive intrusive bodies in the upper crust and/or boundaries between tectonic ...
After staying in hiding on Earth for ten years, Sonic accidentally made his presence known to the United States government, who sent Dr. Robotnik out to investigate the matter, prompting Sonic to try and leave Earth. Robotnik himself tried to capture Sonic, but with the aid of Tom Wachowski...
We also present a set of approximate equivalent internal (mantle) electrical current distributions that prove a useful indicator of the presence of deep Earth heterogeneities. These new sets of electromagnetic information will increase the resolving power of 3D distribution of electrical conductivity in ...
power conditioning and backup plus a station computer to serve as an internet point-of-presence and provide operator command/control. At a borehole deployment, the rack would be connected to other equipment placed at the wellhead, such as for station CMLA at lower left. CMLA's seismometers th...
Nevertheless, as illustrated in Box 1 GC is limited to lagged causal dependencies and, furthermore, has known deficiencies in the presence of subsampled time series and other issues38. GC has a long history of applications across a wide range of scientific domains, including Earth system science...