Question: Confirm that there is on average roughly 1000 tons of cosmic material

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Question: Confirm that there is on average roughly 1000 tons of cosmic material added to the Earth's atmosphere every 24 hours based on above data

AS TU7: Homework No. 3 The Accretion of the Earth could more easily believe that two Yankee professors fall from the heavens...." Thomas Jefferson, 1807 e that this rate must have been substantially greater in t accretion The goal of this analvsis is to infer from the presentl could lie than that stones infer from t observed rate of meteoric bombardment leteors he past if the Earth were for are material objects which impact the Earth, often being partially or completely ther fiery passage through the atmosphere. Meteors are small asteroids; most or more) are of cometary origin, so the Oort cloud is expected to supply a popu far (95% mo of meteors for an about the com sample of metcorities are summarized in the figure and tables reproduced here. One o dioactive decay techniques. The oldest meteorites have ages of 4.6 billion years; they are the perhaps some martian meteorites discovered in Antarctica), ou position of the solar svstem comes from meteor falls. by eors for an extremely long time. Except for a few hundred kilograms of lunar materia aterial r only direct information The properties of this nost important measurements made of meteoric material is the determination of their age using dest known objects in the solar system. 1. Using the information in the "Capture Debris by Earth" table, confirm that there is on average roughlyl 1,000 tons of cosmic material added to the earth's a illion per day and the actual rate is highly variable. HINT: In order to get a value as large atmosphere every 24 hours. The total number of meteors impacting is nearly 25 m as 1,000 tons per day, the numbers in the table must be extrapolated to include ALL material that remains in earth's environs, either in the atmosphere or on the ground You probably will want to graph the table's data in order to aid your extrapolation.

Explanation / Answer

explanation and dimensions made with a space borne dust detector point to a daily mass input of interplanetary dust particles range from 100 to 300 tonnes, which is in concord with the accretion rates of cosmic-enriched element (Ir, Pt, Os and super-paramagnetic Fe) in glacial ice cores and deep-sea sediments.

In discrepancy, proportions in the middle atmosphere – by radar, lidar, high-flying aeroplane and satellite remote sensing – direct to that the contribution is between 5 and 50 tonnes per day.

There are two reason why this huge inconsistency matters. First, if the higher variety of approximation is right, then perpendicular convey in the middle atmosphere must be appreciably earlier than usually believed; while if the lower variety is correct, then our concerned of dust development in the solar system, and suggest from the middle atmosphere to the exterior, will need significant revision. Second, cosmic dust particle enter the atmosphere at high speed and undergo significant ablation.

The resulting metals inject into the atmosphere are involved in a assorted range of phenomenon, including: the configuration of layer of metal atoms and ions; the nucleation of noctilucent clouds, which are a responsive indicator of climate alteration;

impact on stratospheric aerosols and O3 chemistry, which need to be measured alongside the backdrop of a cooling stratosphere and geo-engineering plans to increase sulphate aerosol; and fertilization of the ocean with bio-available Fe, which has possible climate feedbacks.

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