A glacier is receding at a constant rate of 4.3 cm per day. After 35 years, by what approximate length has the glacier receded? 550 meters 1.5 meters 130 meters 55 kilometers
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- 13. How deep in the crust is 10 kbar? Lithostatic pressure within the crusts results from the weight of the rocks above. Assume an average density of 2750 kg/m3. Use the equation P=p*g*h or P/(p *g)=h 23kPa/m P=pressure (e.g. kbar), p=density, g-gravity 9.8 m/s2, h= depth (m), 1 kbar=1,000 bars, 1 bar=100,000 Pa, 1 Pa=kg/(m*s2), 1 kbar =100,000,000 Pa, 1 km =1000 m. Give your answer in kilometers.The average elevation of Arabian peninsula (freeboard) is f=400 m. Considering that the oceanic crust is h=5 km of thickness and the sea average depth is D= 3700 m. (pc=2700 kg/m3, po=3000 kg/m3, pm=3300 kg/m3 pw=1000 kg/m3) What is the thickness H of the continental crust. B. If the Musandam has an average elevation of 800 m. How much is the thickness below Musandam considering stacking of sedimentary layers and not erosion.On August 17, 1983, an earthquake with a magnitude of 5.3 in the Richter scale hit the province of llocos Norte. This was the most sever earthquake in North-western Luzon in 52 years and probably the second largest earthquake to hit Laoag City and its immediate vicinity in historical times (Source: philvocs.dost.gov.ph). How much energy was released by the earthquake? 8.51 x 107 joules 2.24 x 1012 joules 2.42 x 1012 joules 8.15 x 10' joules
- A recent magnitude 6.0 Earthquake was recorded. Earthquakes represent a release of energy as a result of the earth's tectonic plates. a) Determine the amount of energy released in ergs. b) Determine the energy release in Joules. ( Hint use the earthquake formula M = 2/3 log (E/ 10^11.8); where M is the earthquake magnitude and E is the energy of the earthquake in ergs (recall 1 erg = 10^-7 Joules)).Today, the lowest part of Death Valley is near Badwater, an elevation of 85 meters below sea level. One of the abandoned shorelines, cut by waves when the basin was filled with water as a lake during the Pleistocene, is found at an elevation of 80 meters above sea level. Estimate the depth of this lake stand during the Pleistocene.A strong R = 6.2 magnitude earthquake struck off a group of islands, where R is the Richter number. Its intensity is of the form I=aR. Find a. (Enter an exact number.)
- A seismic survey is conducted in a region with two layers. The top layer is shale, with density 2500 kg/m3, and seismic velocity of 2900m/s, and the bottom layer is sandstone, with a density of 2100 kg/m3, and a seismic velocity of 3000m/s. The reflection coefficient will bea. Positiveb. Negativec. Zerod. Not enough informationEarth's surface area is 5.10x10^8 km^2 .Earth's crust has a thickness (or depth) of 35 km and density 2.8 g/cm^3 for earth's crust. d) Silicon's concentration in earth's crust is 2.72x105grams/ton. Calculate the mass of silicon (in grams) present in earth's crust.On August 17, 1983, an earthquake with a magnitude of 5.3 in the Richter scale hit the province of llocos Norte. This was the most sever earthquake in North - western Luzon in 52 years and probably the second largest earthquake to hit Laoag City and its immediate vicinity in historical times (Source: philvocs.dost.gov.ph). How much energy was released by the earthquake? A 2.24 x 1012 joules В 8.51 x 10' joules © 2.42 x 1012 joules D 8.15 x 107 joules
- If the Richter scale is altered so that it compares energy released instead of intensity, the definition of the scale becomes M2 - M1 = LOG31 (E2 / E1). a) If the magnitude of an earthquake is increased by 1 on the scale, by what factor is the energy released multiplied? b) What is the magnitude of an earthquake that releases 200 times the energy of an earthquake with magnitude 4.5? c) How many times greater is the energy released from an earthquake with magnitude 9.0 than that of an earthquake with magnitude 6.5?A non-artesian well is drilled in an aquifer with a fairly horizontal water table. The well (φ = 25 cm) has a discharge of 408 m3 /hr, creating a 250 m wide cone of depression. If the height/depth of the water table is 60 m and the aquifer permeability is 8 m/day, determine the drawdown. Include also diagram or drawing.Assume that on the surface in the center of a mountain glacier, the long-term average speed of ice movement is 1 meter per day. How long will it take a rock that has fallen onto the glacier to travel 3 kilometers to the glacier’s terminus?