Lab5 - Lab 5: The Hayward Fault Name: SID: Introduction: We...

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Lab 5: The Hayward Fault Name: SID: Introduction: We who live in the San Francisco Bay Area have the (somewhat dubious) honor of having active faults all around us. Besides the inherent scientific value in studying these features, there are very practical reasons for trying to understand how the process of faulting works. There are small earthquakes every day in this region, and the history of very large and destructive earthquakes provides motivation to prepare for and possibly mitigate future great seismic events. Because we spend so much of our time on the UC Berkeley campus (and many of us live nearby), it is important to understand the visible features of this active tectonic landscape. We will tour the Hayward fault, stopping along the active traces of the fault in a number of locations on and near the UC campus. We will make measurements of the offset Hamilton creek to understand the timing and magnitude of land-shaping fault movements in the recent past. Based on our tour, you will write a scientific abstract about the timing, magnitude, and effects of the events that have shaped the active Hayward Fault zone. Objective: During the tour you will be asked to make measurements of the offset channel of Hamilton Creek. With these measurements and background information given in the lab, you should be able to back out what fraction of the offset is due to steady creep of the fault, and what fraction is due to sudden earthquakes, as well as the magnitude and frequency of the earthquakes needed to produce this offset. You will need to read EPS faculty Roland Burgmann’s 2000 Science paper about the Hayward Fault to get some of the details needed for the calculation ( http://tinyurl.com/2d3vny ). With these numbers in hand, you should write a short summary of the ongoing active tectonics around Berkeley campus. Your summary should be in the form of a technical scientific abstract, to submit to the journal Geophysical Research Letters, a publication devoted to high-impact but short scientific articles. The publisher’s website lists a maximum length of 150 words; your abstract should be one paragraph of this length, describing the major results of your study (i.e., the calculation you made), and a short summary of the evidence that supports this conclusion, past and present. It should also make clear the broader relevance of your study (social as well as scientific) – why is this something that other people should know about? Writing a good abstract is an invaluable skill. Your future career, whether or not it lies in the realm of science, will undoubtedly require you to concisely summarize your work in abstract form, and success in the scientific world relies heavily on this skill. It is worth learning early. There is a wealth of information on writing good abstracts online, for instance: http://www.seg.org/publications/geophysics/considerations.shtml http://www-geology.ucdavis.edu/~GEL190/advice.html http://www.earthresearch.com/writing-abstract.shtml
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We have also included some information at the end of the lab on abstract-writing. The field trip stops are shown below in Figure 1:
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Lab5 - Lab 5: The Hayward Fault Name: SID: Introduction: We...

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