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| JFZ3005 | Gravity and magnetics prospection | 2+1+0 | ECTS:3 | | Year / Semester | Fall Semester | | Level of Course | First Cycle | | Status | Compulsory | | Department | DEPARTMENT of GEOPHYSICAL ENGINEERING | | Prerequisites and co-requisites | None | | Mode of Delivery | Face to face | | Contact Hours | 14 weeks - 2 hours of lectures and 1 hour of practicals per week | | Lecturer | Prof. Dr. Aysel ŞEREN | | Co-Lecturer | None | | Language of instruction | Turkish | | Professional practise ( internship ) | None | | | | The aim of the course: | | The student should obtain basic knowledge about potential theory for gravity and magnetic prospecting |
| Learning Outcomes | CTPO | TOA | | Upon successful completion of the course, the students will be able to : | | | | LO - 1 : | design gravity and magnetic geophysical surveys and adapt techniques to achieve specific exploration objectives | 1,2,3,4,5,6,7,8,11 | 1 | | LO - 2 : | write computer programs to model the geophysical responses measured in a variety of gravity and magnetic techniques. | 1,2,3,4,5,6,7,8,9,10,11 | 1 | | LO - 3 : | process and invert a variety of gravity and magnetic geophysical measurements into their causative earth models. | 1,2,3,4,5,6,7,8,9,10,11 | 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), LO : Learning Outcome | | |
| Introduction to gravity and magnetic methods, theory of potential field, interpretation of gravity measurements, numerical calculation of gravity anomalies for various geological features, upward and downward continuation of gravity potential fields, interpretation of geomagnetic field measurements, upward and downward continuation of geomagnetic potential fields, interpretation using model structures, computer applications. |
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| Course Syllabus | | Week | Subject | Related Notes / Files | | Week 1 | Introduction to potential theory, the foundations of the gravity method, principles of physics, gravity (Newton) potential, Laplace, Poisson equations | | | Week 2 | Earth gravity change, Geoid, calculation of the Bouguer anomaly (corrections), latitude corrections and comparison with examples, height adjustment (plate free air and Bouguer correction) algorithm for the deriving | | | Week 3 | Topography derived correction algorithm, the earth-tide correction, Isostasy adjustment (Airy and Pratt) | | | Week 4 | Examples revisions. Related programs use, according to the Airy hypothesis Isostasy accounts, regional anomaly separation residual (graphic-hand rounding, the average value method, polynomial fitting, polynomial fitting to the surface and sample calculations, the interpretation of anomalies residual | | | Week 5 | Simple geometric shape of the anomalies, sphere or mass point algorithms, of which about programming mass and with different algorithms in depth account of them to be displayed on the graph, semi-infinite horizontal or limited in length with a horizontal angle alpha which (t) with a thickness of a thin layer of the gravity anomaly algorithms derived the related programs use applications, graphics and comments to the dump | | | Week 6 | Elongated mass of a wire or horizontal cylinder derived algorithm and related solutions programming example, different depths and mass calculations discrete gravity values of second derivative algorithm, the relevant programs using different algorithms and numerical examples of them for the same analytical model as calculated with the actual second derivatives comparison and determination of the validity | | | Week 7 | Surface density concept, discrete gravity values up and down the extension derived algorithm, the relevant programs using different algorithms and their numerical examples for the same model as the analytical second derivative calculated the actual validity of the comparison and determination, gratüküller method | | | Week 8 | Rectangular cross-section of the vertical mass derived of gravity algorithm, the relevant programs using the different model calculations, this algorithm, the algorithm being used thin layer test and determination of tolerance limits | | | Week 9 | Mid-term exam | | | Week 10 | Different model calculations (gravity and vertical-horizontal second derivative of the account) and their comparison with each other, plotting and their reviews, anticlinal, or for senclinals gravity and second derivative calculations, developed a beautiful model of 2d-polygon is defined as their geoid and gravity derived algorithm, the relevant accounts and other special algorithms programming test different models | | | Week 11 | Different modelgeometry definitions, the most ideal choice definition and related programs using the same conclusions based reach Magnetic methods, supply of magnetic field components between gravity magnetic relations, principles of physics and magnetic parameters definitions, units, and types of magnetism, Curie temperature, conversion Hysteresis curve, magnetic süseptibility determine methods | | | Week 12 | Single magnetic pole magnetic potential and magnetic field that derived components, horizontal or vertical dipoles standing custom algorithms, with a horizontal angle alpha which dipole in different positions of the general algorithm deriving, related programs using the same dipoles magnetic field components for the calculation of specific algorithms and general algorithms and validity of the test limits detection. | | | Week 13 | Different magnetic model calculations, graphics and geometric as casting and their algorithmic reviews, the sphere of the components of the magnetic field derived algorithm, linear magnetic pole algorithm | | | Week 14 | Different models using the relevant programs, to calculate the magnetic field components, chart breakdowns, algorithmic and geometric comments | | | Week 15 | Gravity and magnetic anomalies between the Poisson relation, with the land application of magnetic devices, and laboratory measurements süsebtibilite | | | Week 16 | End-of-term exam | | | |
| 1 | Çavşak, H., 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 | 19/11/2010 | 2 | 50 | | End-of-term exam | 16 | 12/01/2011 | 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 | | Sınıf dışı çalışma | 3 | 14 | 42 | | Arasınav için hazırlık | 6 | 1 | 6 | | Arasınav | 2 | 1 | 2 | | Uygulama | 1 | 14 | 14 | | Ödev | 1 | 5 | 5 | | Dönem sonu sınavı için hazırlık | 10 | 1 | 10 | | Dönem sonu sınavı | 2 | 1 | 2 | | Total work load | | | 123 |
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