# Geophysical Exploration Methods

- Institution: IIT Madras
- Department: Civil Engineering
- Teacher: Prof. Elango Lakshmanan
- Level: Undergraduate
- Language: English
- Subjects: Engineering
- Source: [NPTEL](https://nptel.ac.in/courses/105106561)
- Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.)
- Syllabus: [at the source](https://nptel.ac.in/courses/105106561)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

## Lectures

1. [1. Introduction and Scope of Different Methods - I](https://invisiblenetwork.ai/learn/nptel/105106561/51be01215571) (Video)
2. [2. Introduction and Scope of Different Methods - II](https://invisiblenetwork.ai/learn/nptel/105106561/2527f9acc416) (Video)
3. [3. Electrical Methods](https://invisiblenetwork.ai/learn/nptel/105106561/a77bf444e4bc) (Video)
4. [4. Comparison of Electrical and Hydraulic Properties](https://invisiblenetwork.ai/learn/nptel/105106561/9a8de4f69baf) (Video)
5. [5. Array Advantages and Disadvantages - I](https://invisiblenetwork.ai/learn/nptel/105106561/e41dd67289cb) (Video)
6. [Electrical Resistivity Methods : Method of Field Operation, Electrical Profiling and Case Studies](https://invisiblenetwork.ai/learn/nptel/105106561/d972f596fb13) (Video)
7. [7. Electrical Resistivity Methods : Vertical Electrical Sounding Methods](https://invisiblenetwork.ai/learn/nptel/105106561/927bde8988fb) (Video)
8. [8. Electrical Resistivity Methods : Vertical Electrical Sounding Data interpretation Methods](https://invisiblenetwork.ai/learn/nptel/105106561/592f72bf42cb) (Video)
9. [9. Electrical Resistivity methods : 3D resistivity tomography case study and Applications](https://invisiblenetwork.ai/learn/nptel/105106561/a70c313bd7c1) (Video)
10. [10. Field Demonstration of Vertical Electrical Sounding](https://invisiblenetwork.ai/learn/nptel/105106561/13fce46e4aba) (Video)
11. [11. Application of VES and 3D Tomography for Identification of Seawater intrusion](https://invisiblenetwork.ai/learn/nptel/105106561/dbade39f2e0e) (Video)
12. [12. Resistivity Methods for Estimation of Aquifer Properties](https://invisiblenetwork.ai/learn/nptel/105106561/b28761c39f07) (Video)
13. [Expert Lecture - Dr. V.Arulprakasam](https://invisiblenetwork.ai/learn/nptel/105106561/de0b0ce93460) (Video)
14. [14. Electrical Self Potential Method Introduction](https://invisiblenetwork.ai/learn/nptel/105106561/177f03441cec) (Video)
15. [15. Electrical Self Potential Method Field Procedure](https://invisiblenetwork.ai/learn/nptel/105106561/762aa7f1e9b6) (Video)
16. [16. Applications & Case studies -Self Potential method](https://invisiblenetwork.ai/learn/nptel/105106561/d4f01287cbc9) (Video)
17. [17. Electrical Induced Polarization Method - 1](https://invisiblenetwork.ai/learn/nptel/105106561/04608b1277db) (Video)
18. [18. IP Time and Frequency Domain Methods](https://invisiblenetwork.ai/learn/nptel/105106561/1eb74e3beb9e) (Video)
19. [19. Electromagnetic Methods](https://invisiblenetwork.ai/learn/nptel/105106561/2a68c03aee5a) (Video)
20. [20. Electromagnetic Method Field Demonstration](https://invisiblenetwork.ai/learn/nptel/105106561/c37d67447614) (Video)
21. [21. Expert Lectures](https://invisiblenetwork.ai/learn/nptel/105106561/96d800b382cb) (Video)
22. [22. Seismic Methods Introdcution](https://invisiblenetwork.ai/learn/nptel/105106561/e6679fe76da4) (Video)
23. [23. Seismic operation on land](https://invisiblenetwork.ai/learn/nptel/105106561/b07f3720034b) (Video)
24. [24. Explosive Sources](https://invisiblenetwork.ai/learn/nptel/105106561/94c6938fb6a5) (Video)
25. [25. Non-explosive Sources and Receiving Seismic Signals](https://invisiblenetwork.ai/learn/nptel/105106561/b28f163425e4) (Video)
26. [26. Recording of Seismic Signals and Data Reduction](https://invisiblenetwork.ai/learn/nptel/105106561/beca6061031a) (Video)
27. [27 - Seismic Method- Types : Refraction Method, Two layer case study](https://invisiblenetwork.ai/learn/nptel/105106561/970b561ec747) (Video)
28. [28 - Refraction Method - Case study on Multi layer and Dipping layer](https://invisiblenetwork.ai/learn/nptel/105106561/f436ec6ba8cb) (Video)
29. [29. Borehole Seismics](https://invisiblenetwork.ai/learn/nptel/105106561/66048cae8202) (Video)
30. [30 - Geophysics for tunneling & Dam Construction - Expert Lecture by Dr Sanjay Rana - 1](https://invisiblenetwork.ai/learn/nptel/105106561/c605a954614b) (Video)
31. [31.Geophysics for tunneling & Dam Construction - Expert Lecture by Dr Sanjay Rana - 2](https://invisiblenetwork.ai/learn/nptel/105106561/8a43fae98aad) (Video)
32. [32. Seismic Reflection Method](https://invisiblenetwork.ai/learn/nptel/105106561/43ebc617f79e) (Video)
33. [33. Seismic Reflection Applications and Case Studies - 1](https://invisiblenetwork.ai/learn/nptel/105106561/599d38596b60) (Video)
34. [34. Seismic Reflection Applications and Case Studies - 2](https://invisiblenetwork.ai/learn/nptel/105106561/5a2ccaaaf394) (Video)
35. [35. Expert Lecture (Seismic Exploration) - Dr. N. Satyavani, NGRI](https://invisiblenetwork.ai/learn/nptel/105106561/61a26baa212b) (Video)
36. [36. Multichannel Analysis of Surface Waves (MASW)](https://invisiblenetwork.ai/learn/nptel/105106561/323b2eb80863) (Video)
37. [37. MASW - Case Studies](https://invisiblenetwork.ai/learn/nptel/105106561/03abf6dd9345) (Video)
38. [38. Expert Lecture(MASW) - Dr.K. Satish Kumar, NGRI](https://invisiblenetwork.ai/learn/nptel/105106561/206a046c093b) (Video)
39. [39. Gravity Methods Introduction](https://invisiblenetwork.ai/learn/nptel/105106561/a25fbf4ffdd9) (Video)
40. [40. Gravity Method Principle & Types of Gravity Measurements](https://invisiblenetwork.ai/learn/nptel/105106561/1f56d835d807) (Video)
41. [41. Types of Gravimeters](https://invisiblenetwork.ai/learn/nptel/105106561/12d79c7348b2) (Video)
42. [42. Calibration and Drift Correction](https://invisiblenetwork.ai/learn/nptel/105106561/8fd34897aa4f) (Video)
43. [43. Gravity data reduction or Correction 1](https://invisiblenetwork.ai/learn/nptel/105106561/be36aed0c182) (Video)
44. [44. Gravity data reduction or Correction - 2](https://invisiblenetwork.ai/learn/nptel/105106561/e91ca804971d) (Video)
45. [45. Gravity Method ( Interpretation) _ Quantitative Methods](https://invisiblenetwork.ai/learn/nptel/105106561/df154c2d814a) (Video)
46. [46. Gravity Method _indirect interpretation](https://invisiblenetwork.ai/learn/nptel/105106561/1a1a4351e7fa) (Video)
47. [47. Gravity Method Application and Case Studies](https://invisiblenetwork.ai/learn/nptel/105106561/8e49e55513dd) (Video)
48. [48. Gravity Recovery and Climate Experiment ( GRACE Mission)](https://invisiblenetwork.ai/learn/nptel/105106561/1c84f684f9d8) (Video)
49. [49. GRACE - Case Studies](https://invisiblenetwork.ai/learn/nptel/105106561/67157f48aa6e) (Video)
50. [50. Magnetic Methods Introduction](https://invisiblenetwork.ai/learn/nptel/105106561/6f04c2124c30) (Video)
51. [51. Magnetometers](https://invisiblenetwork.ai/learn/nptel/105106561/adef3d21ed19) (Video)
52. [52. Interpretation and Case studies](https://invisiblenetwork.ai/learn/nptel/105106561/9a15e1a1e7dd) (Video)
53. [53. Expert Lecture - Prof.N. Sundararajan](https://invisiblenetwork.ai/learn/nptel/105106561/d2cdf7dbfe96) (Video)
54. [54. Ground Penetrating Radar](https://invisiblenetwork.ai/learn/nptel/105106561/946b152d01fd) (Video)
55. [55. GPR - Field Demonstration](https://invisiblenetwork.ai/learn/nptel/105106561/cddeeaaffdfb) (Video)
56. [56. Synthetic Aperture Radar (SAR)](https://invisiblenetwork.ai/learn/nptel/105106561/6668518e52e9) (Video)
57. [57. Surface Nuclear Magnetic Resonance - 1](https://invisiblenetwork.ai/learn/nptel/105106561/4379b971ac98) (Video)
58. [58. Surface Nuclear Magnetic Resonance - 2](https://invisiblenetwork.ai/learn/nptel/105106561/42e9dc3d0536) (Video)
59. [59. Expert Lecture - Dr. Pramod Kumar Sharma](https://invisiblenetwork.ai/learn/nptel/105106561/e0de46a3dad6) (Video)
60. [60. Radioactive Methods](https://invisiblenetwork.ai/learn/nptel/105106561/d3516d1d3a54) (Video)
61. [61. Geophysical Well Logging methods - I](https://invisiblenetwork.ai/learn/nptel/105106561/5128cecf20dd) (Video)
62. [62. Geophysical Well Logging Methods - II](https://invisiblenetwork.ai/learn/nptel/105106561/5f2f4dd84293) (Video)
63. [63. Induction Log](https://invisiblenetwork.ai/learn/nptel/105106561/451eba96a5a3) (Video)
64. [64. Radiometric logging and applications](https://invisiblenetwork.ai/learn/nptel/105106561/7089190ac252) (Video)
65. [64. Other logging methods - Sonic, Caliper, Temperature](https://invisiblenetwork.ai/learn/nptel/105106561/8d3573e775fd) (Video)
66. [66. Fluid conductivity and NMR logging](https://invisiblenetwork.ai/learn/nptel/105106561/026459c1ddc2) (Video)
67. [67. Bore Hole Camera and Summary of Logging methods](https://invisiblenetwork.ai/learn/nptel/105106561/d91abaa3c80b) (Video)
68. [68. Answers to the Questions](https://invisiblenetwork.ai/learn/nptel/105106561/682e386e6621) (Video)
69. [Live Session 04-02-2025](https://invisiblenetwork.ai/learn/nptel/105106561/51be01215571-2) (Video)
70. [Live Session 18-02-2025](https://invisiblenetwork.ai/learn/nptel/105106561/2527f9acc416-2) (Video)