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| JFZ5150 | Gravity and Magnetic Interpretation | 3+0+0 | ECTS:7.5 | | Year / Semester | Fall Semester | | Level of Course | Second Cycle | | Status | Elective | | Department | DEPARTMENT of GEOPHYSICAL ENGINEERING | | Prerequisites and co-requisites | None | | Mode of Delivery | Face to face | | Contact Hours | 14 weeks - 3 hours of lectures per week | | Lecturer | Doç. Dr. Ali ELMAS | | Co-Lecturer | None | | Language of instruction | Turkish | | Professional practise ( internship ) | None | | | | The aim of the course: | | The aim of this course is to provide students gravity and magnetics data interpretation skills. |
| Programme Outcomes | CTPO | TOA | | Upon successful completion of the course, the students will be able to : | | | | PO - 1 : | design gravity and magnetic geophysical surveys and adapt techniques to achieve specific exploration objectives | 1,7 | 1 | | PO - 2 : | write computer programs to model the geophysical responses measured in a variety of gravity and magnetic techniques. | 1,7 | 1 | | PO - 3 : | process and invert a variety of gravity and magnetic geophysical measurements into their causative earth models. | 1,7 | 1 | | CTPO : Contribution to programme outcomes, TOA :Type of assessment (1: written exam, 2: Oral exam, 3: Homework assignment, 4: Laboratory exercise/exam, 5: Seminar / presentation, 6: Term paper), PO : Learning Outcome | | |
| Basis of the potential theory. Remembrance of the Gravity anomaly reductions. The preparatory work for the algorithms (in the focus of Mathamatik) of the different model geometries. The Gravity anomaly calculations of a mass point and a sphere, which are defined in the various coordinates systems. The explanations of the algorithms by the binomial series and legends functions. Algorithm of semi layer which is paralel to the earth surface and it has the thickness of t. The meanings of the adopted special integral borders. The influences of these integral limits on the calculations. Gravity algorithm of a long and very thin Drachten or a cylinder with the very small radius, which lie Horisontal. The algorithms of one layer, which is limited in length and makes an angle to the earth surface and is in the best coordinate system. The meanings of the special integral borders. This algorithm is suited to what parameters. The Integral and its borders are defined by trigonometric functions. |
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| Course Syllabus | | Week | Subject | Related Notes / Files | | Week 1 | Simple geometric shapes 2d gravity algorithm to remember the brief, mass or ball point, infinite length of thin wire mass, (t) thin semi-infinite, or limited in length with a horizontal angle alpha which fine mass, vertical rectangular cross-section which mass, random-shaped masses and their application studies. | | | Week 2 | for the simple 3d gravity model geometry algorithms, rectangles and polygons prism zone and the corresponding numerical program applications. | | | Week 3 | Be defined based modelgeometrilerin surface 3d of gravity trianglasyon algorithm definition. | | | Week 4 | Algorithms written in a main Trianglasyon prepared program input data that is the mass of the sub-programs separated surfaces design and spelling techniques, are served in different forms of data and programs to be run. | | | Week 5 | Related programs using a simple algorithm 3d calculated for various model geometries gravity, trianglasyon algorithm validity of the test and the determination of this simple algorithm. | | | Week 6 | Algorithm based on lower and Trianglasion main programs being used by various very complex calculation of 3d model geometries gravity and Geoid anomaly. | | | Week 7 | 2d as the design and model geometry 3d model geometry density 2d and 3d gravity anomalies calculated accepted comparison with each other and their determination they are the same. | | | Week 8 | 3d superiority in the face of gravity accounts 2d accounts that demonstrate different gravity model calculations, 3d model calculation elimination of border effects. | | | Week 9 | Mid-term exam | | | Week 10 | The marked difference in intensity of the positive-negative model geometry Geoid anomaly 2d, 3d calculated with the same design model geometry 3d but identical with the positive sign of Geoid anomalies and the determination of the difference signal source because of the algorithm. | | | Week 11 | The positive difference density and multiple formations that contain a negative sign for the amateur model geometry calculated 2d Geoid anomaly, inversion account values as a measure of the density calculation and the algorithm source and positive reasons. | | | Week 12 | Shaped formations that contain more than one artificial 3d random gravity and Geoid anomalies model geometry density accepted account, these values used as 3d inversion account for the size determination and interpretation of and the same density. | | | Week 13 | Artificial 3d, y-equivalent to infinite distance in the direction facing the extended random-shaped formations that contain more than one model geometry geoid and gravity anomalies accepted density of the account, these values 2d inversion account for the extent and as a calculation of the same intensity and interpretation. | | | Week 14 | Artificial 3d random shaped and limited volum formations that contain more than one model geometry geoid and gravity anomalies accepted density of the account, these values 2d inversion account values as a measure and calculation of different density, 2d gravity account and interpretation of the drawbacks. | | | Week 15 | 2d and 3d in gravity studies in the literature available model geometries related programs using the same intensity under the assumption of similarity calculation and gravities again, small or large differences of interpretation. | | | Week 16 | End-of-term exam | | | |
| 1 | Havşak, H., Gravite Manyetik, Basılmamış Ders Notlar, KTÜ, Trabzon. | | | 2 | Jacoby, W.R., Smilde, P., 2009 Gravity Interpretation: Fundamentals and Application of Gravity Inversion and Geological Interpretation, Springer, US. | | | |
| 1 | Telfort, W.M., et all., 1991, Applied Geophysics | | | 2 | Friedrich, B., et all., 1985, Angewandte Geowissenschaften | | | |
| Method of Assessment | | Type of assessment | Week No | Date | Duration (hours) | Weight (%) | | Mid-term exam | 9 | | 2 | 50 | | End-of-term exam | 16 | | 2 | 50 | | |
| Student Work Load and its Distribution | | Type of work | Duration (hours pw) | No of weeks / Number of activity | Hours in total per term | | Yüz yüze eğitim | 3 | 14 | 42 | | Arasınav için hazırlık | 18 | 1 | 18 | | Arasınav | 2 | 1 | 2 | | Ödev | 10 | 1 | 10 | | Dönem sonu sınavı için hazırlık | 5 | 1 | 5 | | Dönem sonu sınavı | 2 | 1 | 2 | | Diğer 1 | 7 | 5 | 35 | | Total work load | | | 114 |
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