Sheriff, Steven D.

English

University of Montana

University of Montana ScholarWorks at University of Montana Syllabi Course Syllabi 9-2003 GEOL 437.01: Seismology and Magnetics Steven D. Sheriff University of Montana - Missoula, steven.sheriff@umontana.edu Follow this and additional works at: https://scholarworks.umt.edu/syllabi Let us know how access to this document benefits you. Recommended Citation Sheriff, Steven D., "GEOL 437.01: Seismology and Magnetics" (2003). Syllabi. 3488. https://scholarworks.umt.edu/syllabi/3488 This Syllabus is brought to you for free and open access by the Course Syllabi at ScholarWorks at University of Montana. It has been accepted for inclusion in Syllabi by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact scholarworks@mso.umt.edu. Seismology and Magnetics - Geology 437Professor: Steve SheriffGrading: Based on exams, problem sets, project reports, participation (on grading papers)Fall 2003 - Syllabus, followed by what's going on:• 9/3: Intro to course, principles of waves, terminology, and a couple warm-up problems.• 9/8: Go over problems, least squares(2) constraints, Huygens principle• 9 /10: Laws of reflection & refraction, Figures(1, 2), 2-layer refraction equations.• 9 /15: Problem set #2, multiple layers, applet, dip, velocity problems, qualitative refraction interpretation.• 9/17: Haeni/USGS paper (8.5mb) Geometries applications, should make sense, sampling ideas, automation of interpretation, terminology, arrivals, equipment considerations• 9/22: Meet at the play field north of the football stadium (unless it rains) to conduct refraction experiments (Smartseis manual, quick sheet, Geometries).• 9/24: Meet at the play field north of the football stadium (unless it rains) to conduct refraction experiments so you can proceed with the seismic field assignment.• 9/29: refraction problem, Geomagnetism, declination, inclination, magnetic elements• 10/1: Frozen flux theory, spherical coordinates, dv, equation for uniformly magnetized sphere• 10/6: Uniformly magnetized sphere, Dipole equation, paleolatitude, rotations and translations, spherical trig• 10/8: Excel's Solver (help), pole calculations, apparent polar wander, and fluxgate magnetometers.• 10/13: Another fluxgate and proton precession magnetometers (1, 2), mag anomalies vs latitude, (1, 2, 3, 4), DNAG mag, US aeromag maps, Magcad (save model(delete crashes)), and sampling theory• 10/15: Problems, SIPwin (history -3mb pdf), mag anomalies vs latitude, (3, 4), dipole applet, environmental scale: Philippines figures: 1 ,2 ,3,  total field anomalies and magnetic gradient.• 10/20: Aeromag maps, NOAA Geomag site, auroras (Lorentz force), and the GEM magnetometer. The quick sheet presents the basics of operation; the complete document provides more detail.• 10/22: Magnetic field assignment, Canadian magnetic applications, java map, Blakely's Puget Sound work, sampling and reconstruction, continuation• 10/27: Midterm exam• 10/29: Surfer, gridding & presenting x, y, z data with examples: Contouring is Interpretation!, Goodnews figures (1, 2, 3) and my report• 11/3: Start rock magnetism, hysterisis (from Butler), and Curie temperature• 11/5: Magnetic minerals, Download data from the gradiometerHere's how the course went during fall 2002:• 9/4: Intro to course, principles of waves, terminology, and a couple warm-up problems.• 9/9: Go over problems, Huygens principle, laws of reflection & refraction, Figures(1, 2).• 9/11: Problems(revised numbers - originals work too) for 9/16, 2 & 3 layer refraction equations,ray tracing. Haeni/USGS paper (8.5mb).• 9/16: Qualitative refraction interpretation, terminology, equipment considerations, picking arrivals on the EG&G seismograph, setup and operation of the Smartseis.• 9/18: Meet at the Riverbowl field (unless it rains) to conduct refraction experiments so you can proceed with the seismic field assignment. Everything worked great except the final printout from the SIPQC software on the Smartseis. My current guess is the program picks a printer scale as a function of the geophone numbers (like ~1,000 from our origin) instead of the distances (ours were ~ 1-10 meters).• 9/23: A refraction problem using last week's data and another session in the field with the Smartseis. Everything worked fine, use small numbers for small experiments and the software seems to be happy.

GEOL 437.01: Seismology and Magnetics

University of Montana ScholarWorks at University of Montana Syllabi Course Syllabi 9-2002 GEOL 437.01: Seismology and Magnetics Steven D. Sheriff University of Montana - Missoula, steven.sheriff@umontana.edu Follow this and additional works at: https://scholarworks.umt.edu/syllabi Let us know how access to this document benefits you. Recommended Citation Sheriff, Steven D., "GEOL 437.01: Seismology and Magnetics" (2002). Syllabi. 3215. https://scholarworks.umt.edu/syllabi/3215 This Syllabus is brought to you for free and open access by the Course Syllabi at ScholarWorks at University of Montana. It has been accepted for inclusion in Syllabi by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact scholarworks@mso.umt.edu. Geology 437 -  Seismology and Magnetics, Fall 2002, 4 credits.You are the subject of an experiment. This course will combine some of the theory and global aspects of seismology andmagnetics as well as their practical application to environmental problems. Because I want to make sure we get the fieldwork in relatively early in the semester the schedule will seem a little convoluted at first. Basically we will start with enoughbackground in seismology and then magnetic to get started with field assignments and equipment use and then return to theglobal and deep interior aspects of each subdiscipline later in the semester.Text: Lowrie, Fundamentals o f  Geophysics. I expect you to read and study the text as appropriate for topics we are coveringin class. The most important use of the text is to get a different perspective/approach to a topic than mine. Other useful textsare available in the library. For spring semester I ’ll order Reynolds, An Introduction to Applied and EnvironmentalGeophysics. In reality both would be useful this semester so if you are feeling rich and intend to take the spring semester youcould order Reynolds on your own now.Grading: One midterm (-30% each), one final (-35%), field oriented assignments (-25%), problem sets (-10%). Thesepercentage assignments are all approximate for a number of reasons. For example, if you don’t do the problem sets orassignments I ’ll weight them as 80%. If you do them and miss them all I’ll probably weight them less than 10%. Yourparticipation and discussion during the semester will count towards your grade.Computation: I expect you to have some familiarity with spreadsheets and that you will learn some of the other softwarewe’ll need for the fieldwork. If you think you need to develop these skills now is the time to start.Field Assignments: These will involve you working with two to four others and taking appropriate equipment out andperforming an assigned task. You will write a short report on the experiment and results where syntax, grammar andpresentation count as does content. I ’ll provide guidance as we progress. Each individual in a group is responsible forwriting their own independent report; work together, write independently.Exams: I do some derivations in class and use a reasonable number of equations to develop topics. I do not expect youto memorize equations or derivations; you’ll get a sheet to use during the exams with all appropriate equations. I doexpect you to understand the equations, recognize the variables, and be able to use them to solve geologic problems.Exam Schedule: I prefer to determine the midterm exam time when the schedule is right, when we get through withmajor topics. We’ll schedule it at least a week in advance.Course content will jump around a little to accommodate fieldwork. Interpret this as weather, not disorganization. Maybe it will go like this:Seismology• Basic theory, history, multilayer refraction• Engineering/environmental scale refraction (field and lab)Magnetics• Basic magnetics; magnetic exploration• Magnetic field assignment• Rock Magnetism & Paleomagnetism• Exploiting magnetic anomalies Seismology• Seismology (T-delta curves, earthquakes, reflection seismology)• Reflection seismology (crustal scale)My goals for the course• Introduce you to some of the topics in seismology and magnetics solid-earth and exploration geophysics• Teach some of the standard mathematical/geophysical techniques you will need to understand geophysicalapplications to many geologic problems• Get you to a level where you can read and understand geophysical literature so you can evaluate geophysicalapplications to geological problems and so you can investigate the use of geophysics in geological problems.• I believe that any senior level course in our department should prepare you to read the professional literature for thecourse’s topic -  that’s an excellent way for you to evaluate a course as well. I try to talk about problem solving andexperimental design; any good course in science should teach you the techniques and problems of the discipline. Iexpect you to read the textbook for the descriptive aspects of the material.

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GEOL 437.01: Seismology and Magnetics

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