on October 4, 2022
Why is colored seismic inversion called ‘colored’?
Earth scienceAsked by: Joseph Pratt The earth’s reflectivity can be considered fractal, and the resulting amplitude spectrum favors high frequencies (spectral blueing). If there was no preferred frequency, then you would have a “white spectrum”, but as there are some frequencies with more energy, then it is called “colored”. What is Coloured inversion? Coloured Inversion is
on October 4, 2022
Migration Routes for Animals from Asia to America
Earth scienceAsked by: Jennifer Franklin What animal evolved in North America and moved to Asia? Most — about 75 per cent — originated in Europe or Asia, he says. But some animals, such as camels and horses, evolved in North America first and then travelled to Asia, he says. Where is the largest migration of animals
on October 4, 2022
Why are most minerals so rare?
Earth scienceAsked by: Jennifer Franklin Most minerals are rare because of two reasons: They are not rare, but they inaccessible, or they require very unusual conditions to form. Will we ever run out of minerals? What are minerals? How big is our planet’s supply? So it’s unlikely that Earth will ever run out of minerals. What
on October 4, 2022
First to Sail the Jet Stream Around the World
Earth scienceAsked by: Reed Laskowski Ferdinand MagellanFerdinand MagellanFerdinand Magellan (/məˈɡɛlən/ or /məˈdʒɛlən/; Portuguese: Fernão de Magalhães, IPA: [fɨɾˈnɐ̃w dɨ mɐɣɐˈʎɐ̃jʃ]; Spanish: Fernando de Magallanes, IPA: [feɾˈnando ðe maɣaˈʎanes]; 4 February 1480 – 27 April 1521) was a Portuguese explorer and a subject of the Hispanic Monarchy from 1518. Who first discovered the jet stream? Wasaburo Oishi
on October 4, 2022
Erosion without weathering?
Earth scienceAsked by: Reed Laskowski Can there be erosion without weathering? Without weathering, erosion is not possible. Because the two processes work so closely together, they are often confused. However, they are two separate processes. Weathering is the process of breaking down rocks. What causes erosion but not weathering? Wind, water, ice and human activities are
on October 4, 2022
Geological maps of British Columbia
Earth scienceAsked by: Curtis Cavenaugh What is the geological history of British Columbia? British Columbia is composed of a portion of the ancestral North American Craton as well as two superterranes that were appended to the continent during a pair of Mesozoic collision events. The Coast Range Batholith intruded into the Insular Superterrane about 100 million
on October 4, 2022
Locate people by Oxygen/Carbon Dioxide levels
Earth scienceAsked by: Curtis Cavenaugh Why do we measure CO2 in patients? The CO2 test is most often done as part of an electrolyte or basic metabolic panel. Changes in your CO2 level may suggest that you are losing or retaining fluid. This may cause an imbalance in your body’s electrolytes. CO2 levels in the blood
on October 4, 2022
How will sea level rise be distributed across the globe?
Earth scienceAsked by: Carrie Bendinger Do sea levels rise equally around the world? No. Sea level rise is uneven, the two main reasons being ocean dynamics and Earth’s uneven gravity field. First, ocean dynamics is the redistribution of mass due to currents driven by wind, heating, evaporation and precipitation. How much will the sea level rise
on October 4, 2022
How does the lapse rate in clouds compare with the lapse rate of air?
Earth scienceAsked by: Carrie Bendinger How does the lapse rate typically compare between the inside and outside of a cloud? The lapse rate of temperature is ignorant of clouds, it only cares that either e/es=1 (moist), where e is vapor pressure and es is saturation vapor pressure. A cloud is saturated (and in places supersaturated) and
on October 3, 2022
What does the precessional parameter measure?
Earth scienceAsked by: Tim Lakemary What is the precession index? The precession index is e sin omega(sub s) where e is the Earth’s orbital eccentricity and omega(sub s) measures how close the Sun is to the Earth at midsummer. When omega(sub s) = 90deg the Sun is close to the Earth during northern summer, and at