Common Midpoint Seismic Sections For A Range Of Geological Structures

This lab uses earthquake data to construct profiles of two convergent boundaries: the Tonga Trench and the Peru-Chile Trench. Where two tectonic plates converge, if one or both of the plates is an oceanic lithosphere, a subduction zone will form. When crust is formed at a mid-ocean ridge, it is hot and buoyant meaning it has a low density. As it spreads away from the ridge and cools and contracts, or becomes denser, it is able to sink into the hotter underlying mantle. When two oceanic plates collide, the younger of the two plates, because it is less dense will ride over the edge of the older plate. The density of the

With our observation of the Shawangunk formation, we see a sedimentary rock formation containing a range of grain size. Such sizes range from pebbles (3cm-5cm), fine-grain sand, and medium-grain sand. There is some grading towards the bottom left of the outcrop known as a reverse grading with some small cross beds present (Figure 2). The grading occurs towards a slight part of the outcrop where we see the grading beginning as fine grain sediments and working up to coarser grain. With moderate sorting we see variations of degree of sorting per bed. As the degree of sorting varies as does the sphericity. The sediment bedding is well seen ranging in sizes of +/--20 cm to 40 cm. This outcrop has thick beds as one can see the basic units with cracks in between each (Figure 3). With mostly tabular beds consisting of sub-angular, and sub-rounded sediments, this outcrop also consists of some ventricular beds (Figure 4). When looking at figure 4, we have a small space of a ventricular bed present. This is because the bed comes in, pinches thicker bedding,

utilization of an inward reflect close to the subject and a second curved reflect at a remote site. In

Determine the relative age each of the geologic structures shown in the geologic cross section below (Figure 9.17) from youngest to oldest; then answer the questions below. As before, a wiggly line running across the geologic cross section indicates an unconformity and a fault is indicated with a bold straight line.

D. P-wave amplitude is larger than all the other seismic waves recorded on a seismogram.

The area in question is located on the lawn between Powell Residence Hall and Weinbach Ave and across from Hale Residence Hall. The known elevation is 380’ and is located on the sidewalk outside Powell. First using the Total Station, our group gathered the information for the distances between points. With one person holding the prism reflector and another operating the Total Station, the distance between two points can be measured. Each set is measured multiple times with an average taken. The averages between points 1 and 2 is 96. 930 ft., 2 and 3 is 120.267 ft., 3 and 4 is 103.528 ft., and 4 and 1 is 99.597 ft. Next with the Total Station, the angles can be measured between points. The zero line is set, then the rod person moves clockwise to the

P is the reflectance proportion of EMR, M is the outgoing reflectance and E is the incoming reflectance. So in order to find the reflectance we are dividing the outgoing (M) reflectance to the incoming reflectance (E).

or 1? c. Changing the disk’s surface so that later the light will reflect differently for 0 or 1

The horizontal resolution worsens as the reflectors are separated from the frequency because the footprint gets larger. The simulation and experimental values range approximately from λ/2 to 2λ for the high frequency. The results obtained for different frequency, the wavelengths converge when the bars are buried far from the antennas. In the horizontal resolution, the influence of the reflector's material is smaller. The best resolution is obtained with the 1 GHz as its resolution is slightly better than for the 800

Using the reflectance spectrum in these three states, only, does not have high accuracy, as shown in 3, 4 and 5 Tables. However, adding derivative spectrum increases R^2 to a large extent and decreases the relative RMSE. The highest〖 R〗^2, in a 1bit method, relating to the use of the reflectance spectrum code and the derivative code is for 400-1050 nm wavelengths to 2nd order and 500-800nm to 3rd order. In the 2bit case, using the reflectance spectrum and the derivative to 3rd order, in both used wavelength, had better function and the best result for the 3rd state was in the 400-10560nm wavelength to 3rd derivative and 500-800 nm to 2nd order derivative. Deletion of the blue region from the beginning of the spectrum and regions by more than 800nm wavelength were effective in improving the results. Although using 3bit code causes lengthening the disciplinary code, among these three states, by considering the reflectance spectrum and its derivative behavior in more detailed, was more successful than the first two states to manifest the

B, because the lines in the spectra are closer to the red side meaning they have longer wavelengths, therefore it’s a red shift so it is moving away from you.

The bending of waves as they pass from one form of matter to another is refraction. When light travels from an object to one’s eyes, it makes the object seem to be in a different location. As waves access a new medium. they travel at a different rate in the alternative medium. For instance, light waves travel at a lower rate in water than in air. The

Behind that outside pattern the dim shapes get clearer every day. It is always the same shape, only very numinous. And it is like a woman stooping down and creeping about behind that pattern. I don't like it a bit (Gilman, Heath 806).

The name of this angle is Brewster Angle. It always obey a rule that reflected ray and refracted ray in 90 degrees. Based on Snell's Law, n1sinθp=n2sinθ2. And θp+θ2=90 degrees. ( θp is incidence angle and θ2 is refraction angle).

The earthquakes above give a brief glimpse into the importance of analyzing past and present fault configurations. If scientists could make a breakthrough in this area perhaps we could better predict earthquake activity and better prepare ourselves if it is deemed a potential disaster is looming.