Permian-Triassic mass extinction. Consequences on Earth’s system
Earth ScienceAsked by: Derreck Phutane How did the Permian extinction affect the Earth? The Permian extinction was characterized by the elimination of over 95 percent of marine and 70 percent of terrestrial species. In addition, over half of all taxonomic families present at the time disappeared. This event ranks first in severity of the five major
How will global warming affect climate systems like the ENSO or the MJO?
Earth ScienceAsked by: Craig Wiseman How will global warming affect ENSO? Climate change is increasing the frequency of extreme El Niño events, leading to intensifying droughts, worsening floods, and shifting hurricane patterns, according to a new study published in the Proceedings of the National Academy of Sciences. Does MJO affect ENSO? There is evidence that the
Is the Principle of Original Horizontality a good indicator?
Earth ScienceAsked by: Craig Wiseman What best describes the principle of original horizontality? The principle of original horizontality states that layers of sediment are originally deposited horizontally under the action of gravity. It is a relative dating technique. The principle is important to the analysis of folded and tilted strata. What is the meaning of original
What are the boundary conditions for Navier’s Equations of motion in seismic?
Earth ScienceAsked by: Shawn Wade What is seismic wave equation? 3.1. Seismic wave equation. The 1D time-dependent seismic wave equation in an isotropic and homogeneous medium can be expressed by (Sheriff and Geldart, 1995):(24) ∂ 2 u ( x , t ) ∂ t 2 − V 2 ∂ 2 u ( x , t )
Water on Mars and Earth
Earth ScienceAsked by: Shawn Wade The ice on Mars is a little bit different than on Earth. On Earth, usually the ice is just, you know, water ice. But on Mars, it’s actually water ice and CO2 ice mixed with each other. How much water is on Earth vs Mars? The Mars Odyssey neutron spectrometer observations
How Hot was the Oligocene?
Earth ScienceAsked by: Ana Gonzalez Oligocene GMSTs were ∼22 to 24 °C (Fig. 3A), thus not significantly different from those of the late Eocene, 23 °C, and >8 °C higher than modern rather than ∼5 °C (e.g., refs. 42, 69). What was the climate like in the Oligocene? During the Oligocene, Eurasian mid-high latitudes were mainly