Conferences - International
1. Friedel, M.J., Thill. R.E., 1990, U.S. Bureau of Mines research on the Kaiser Effect for determining stress in rock. Proceedings in International Joint Meeting, 1st Workshop on AE in Civil Engineering and 2nd Workshop on AE and Rock Fracture Mechanics, Kumamoto City, Japan, Oct. 29-31, pp. 54. [INIVITED; PRESENTED]
2. Schmidt, R.D. Friedel, M.J., 1991, Application of computers for analysis of in situ leach mining hydrology, Proceedings Indo-U.S. Symposium on Computers in the Mining Industry, Dahnbad, India, November 11-13, pp. 121-135. [INVITED; CONTRIBUTED]
3. Jackson, M.J., M.J. Friedel, D.R. Tweeton, D.F. Scott, and T.J. Williams, 1995, Three-dimensional imaging of underground mine structures using geophysical tomography with tests for resolution and robustness. Proceedings CAMI ‘95: 3rd Canadian Conference on Computer Applications in the Mineral Industry, Montreal, Quebec, Canada, October 22-25. [INVITED; CONTRIBUTED]
4. Friedel, M.J., D.F. Scott, M.J. Jackson,,T. Williams, and S.M. Killen, 1995, 3-D seismic tomographic investigation of mechanical conditions in a deep US gold mine, Proceedings Mech. Jointed and Faulted Rock-2, Vienna Austria, April 13-17, pp. 689-695. [INVITED; PRESENTED]
5. Friedel, M.J., 2004, Reliability in urban ground-water recharge estimates through the vadose zone: managing sustainable development in arid and semiarid regions, NATO Advanced Study Institute - Management and Sustainable Development of Urban Groundwater Systems, Baku, Azerbiajan, Aug. 10-20, 2004. [KEYNOTE]
6. Friedel, M.J., 2005, Urbanization effects on ecological integrity in the Upper Illinois River Basin, USA, NATO Advanced Study Workshop - Groundwater and Ecosystems, Canakkale, Turkey, Sept. 5-7, 2005. [KEYNOTE]
7. Friedel, M.J., 2005, Probable flooding in ungaged coastal basins of El Salvador, International Symposium on Methodology in Hydrology, Nanjing, China, Oct. 30 -Nov. 2, 2005. [KEYNOTE]
8. Friedel, M.J., 2005, Simultaneous estimation of recurrent rainfall amounts in ungaged coastal basins of El Salvador, International Symposium on Methodology in Hydrology, Nanjing, China, Oct. 30 - Nov. 2, 2005. [KEYNOTE]
9. Friedel, M.J., 2005, Effects of Coal-bed methane discharge waters on vegetation and soil ecosystem in Powder River Basin, Wyoming, USA, International Symposium on Methodology in Hydrology, Nanjing, China, Oct. 30 - Nov. 2, 2005. [KEYNOTE]
10. Friedel, M.J., 2008, Numerical modeling strategies in resource assessments – past, present, and future. SP 41. Modelagem numérica e experimental de processos geológicos, Grande Área: MÉTODOS E TÉCNICAS EM GEOLOGIA, 44º Congresso Brasileiro de Geologia, Curitiba, Brazil, October 26-31. [KEYNOTE]
11. Moreira, L.P., Sand de França G.,L.A., Friedel, M.J., 2010, Joint inversion of receiver function and surface waves using a regularized Gauss-Marquardt-Levenberg nonlinear method, EOS Trans. AGU, 89(53), 2010 The Meeting of the Americas, Abstract, S12xx-xxxx: 8–13 August, Foz do Iguaçu - PR, 85862–210, Brazil [CONTRIBUTED]
12. Iwashita, F., Friedel, M.J., Ribeiro, G.F., Fraser, S.J., de Souza-Filho, C.R., 2010, Using self-organizing maps to predict soil texture and hydraulic conductivity in the Poços de Caldas, Modelagem numérica e experimental de processos geológicos, Grande Área: MÉTODOS E TÉCNICAS EM GEOLOGIA, 45º Congresso Brasileiro de Geologia, Belem, Brazil, October 26-31. [CONTRIBUTED]
13. Friedel, M.J., 2010, Intelligent estimation, prediction, and synthesis of climate change effects on ecosystem services in the United States – issues of national and global security, NATO Advanced Study Workshop – Climate change Effect on Water Supplies – Issues of National and Global Security, Izmir, Turkey, Sept.1-5, 2010. [KEYNOTE]
Conferences - USA
1. Thill, R.E., M.J. Friedel, and J.C. Hanson, 1990, Mining geophysics: a research perspective. Proceedings International Symposium on Borehole Geophysics in Petroleum, Hydrology, Mining, and Engineering Applications, Tucson, AZ., February 1-3, 5 pp. [INIVITED]
2. Jessop, J.A., R.E. Thill, and M.J. Friedel, 1990, Acoustic site characterization studies for in situ mining. Society for Mining, Metallurgy, and Exploration Annual Meeting, Preprint 90-184, Salt Lake City, UT, February 26-30, 11 pp. [PRESENTED]
3. Schmidt, R.D., M.J. Friedel and K. Behnke, 1990, Hydrologic considerations of underground in place copper leaching. Society for Mining, Metallurgy, and Exploration Ann. Mtg., Preprint 90-179, Salt Lake City, UT, February 26-March 1, 12 pp. [PRESENTED]
4. Friedel, M.J., 1990, Common offset radar profiling for detection of fractures igneous rock. Poster presented at Geophysical Solutions to Geologic Problems of Continental Interiors: A Minnesota Workshop, Minnesota Geologic Survey, Minneapolis, Minnesota, March 4-6, pp 12-15. [PRESENTED]
5. Friedel, M.J. and J.C. Hanson, 1990, Assessment of ground penetrating radar for detecting hazardous abandoned mine openings and related features. Proceedings12th Annual National Abandoned Mine Land Conference, Breckenridge, CO, September, pp. 87-55. [PRESENTED]
6. Friedel, M.J. and Hanson, J.C., 1990, An integrated geophysical approach to detection of abandoned mine openings. Proceedings 12th Annual National Abandoned Mine Land Conference, Breckenridge, CO, September 15, pp. 57-86. [INVITED and PRESENTED]
7. Friedel, M.J. and R.D. Schmidt, 1991, Effect of an unsaturated setting on the hydrology of in situ copper leaching. Society for Mining, Metallurgy, and Exploration Ann. Mtg., Preprint 91-161, Denver, CO, February 25-28, 11 pp. (published as Friedel, M.J., 1992, Effect of Unsaturated Conditions on the Hydrology of In Situ Copper Leaching. Society of Mining Engineers Transactions, Vol. 294, pp 1029-1036.) [PRESENTED]
8. Hanson, J.C., Tweeton, D.R., Friedel, M.J., and Dahl, L.J., 1991, A field test of electromagnetic methods for the detection of conductive plumes. Annual International Meeting: Society of Exploration Geophysics, November 10-14, pp. 569-572. [PRESENTED]
9. Friedel, M.J., J.A. Jessop, and R.E. Thill, 1991, Igneous rock mass fracture delineation using common offset radar reflection. Proceedings 61st Annual International Meeting: Society of Exploration Geophysics, November 10-14, pp. 504-506. [PRESENTED]
10. Friedel, M.J., 1992, Scale-dependence In the hydrologic design of in situ copper leaching operations: Paper presented at Society for Mining, Metallurgy, and Exploration annual meeting, Reno, Nevada, Feb. 18, 1992. (published as Friedel, M.J., 1993, Scale-Dependence in the Hydrologic Design of In Situ Copper Leaching Operations. Society of Mining Engineers Transactions, Vol. 294, pp 1918-1926.) [PRESENTED]
11. Friedel, M.J., P.M. Jones, and R.D. Schmidt, 1992, Geostatistical analysis of dynamic transmissivity during in situ copper leaching. Proceedings 23rd International Symposium on Applications of Computers in Mining Industry, April 7-11, pp. 49-61. [INIVITED and PRESENTED]
12. Jessop, J.A., M.J. Friedel, D.R. Tweeton, and M.J. Jackson, 1992. Fracture detection with seismic crosshole tomography for solution control in a stope. Proceedings Symposium on Application of Geophysics to Engineering and Environmental Problems, Oakbrook, IL, April 26-29, pp. 487-587. [PRESENTED]
13. Jackson, M.J., D.R. Tweeton, and M.J. Friedel, 1992, Approaches for optimizing the use of available information in crosshole seismic tomographic reconstruction. Proceedings GeoTech '92 Geo-Computing Conference, Denver, CO, August 31-September 3, pp. 130-143.
14. Tweeton, D.R., J.C. Hanson, M.J. Friedel and L.J. Dahl, 1992, Field tests of geophysical methods for monitoring the flow patterns of leach solution. Proceedings Engineering Foundation Conference, In Situ Recovery of Minerals II, October 25-30, Santa Barbara, CA, pp. 179-199.
15. Schmidt, R.D., D. Early, III, and M.J. Friedel, 1992, Analysis and implications of dynamic transmissivity conditions during in situ copper leaching. Proceedings Engineering Foundation Conference, In Situ Recovery of Minerals II, Santa Barbara, October 25-30, pp. 259-286.
16. Jessop, J.A., D.L. Borek, M.J. Jackson, D.R. Tweeton and M.J. Friedel, 1992, Evaluation of a stope leaching site using geotomography. Proceedings Engineering Foundation Conference, In Situ Minerals Recovery-II , Santa Barbara, CA, October 25-30, pp. 599-616.
17. Thill, R.E., M.J. Friedel, J.A. Jessop, and M.J. Jackson, 1992, Integrated geophysics and geotomography for ground control applications. Proceedings 4th Ground Control Symposium, Southern Illinois University, Mt.Vernon, IL, November 2-4, pp. 51-69.
18. Friedel, M.J., J.A. Jessop, and R.E. Thill, 1992, Mining applications of seismic tomography. Proceedings 62nd Annual International Meeting: Society of Exploration Geophysics, New Orleans, LA, November 10-14, pp. 58-62. [PRESENTED]
19. Jackson, M., E. Wedepohl, M.J. Friedel, and K. Hauser, 1993, Forward modeling of electromagnetic wave propagation in layered media: implications for cross-borehole radio-wave detection of voids in coal measure rocks. Proceedings 4th Tunnel Detection Symposium, Golden CO, pp. 399-412.
20. Hauser, K.L. and M.J. Friedel, 1993, Geophysical techniques applied to cavity detection at the Wharf Mine, Lead, South Dakota. Proceedings 4th Tunnel Detection Symposium, Golden, CO., pp. 617-636.
21. Friedel, M.J. and M.J. Jackson, 1993, Application of seismic tomography for assessing yield pillar stress conditions. Paper presented at Twelfth Conference on Ground Control in Mining, Lakeview Resort and Conference Center, Morgantown, WV, August 3-5, 1993, pp. 292-301. [INVITED and PRESENTED]
22. Friedel, M.J., M.J. Jackson, E. Williams, M.S. Olson, 1994, Tomographic imaging of coal pillar conditions: observations and implications. Society of Mining Metallurgy, & Exploration Annual Meeting, February 14-17, Albuquerque, NM, Preprint 94-110, 17p. [PRESENTED]
23. Friedel, M., 1994, 3D tomographic imaging of anomalous conditions in a deep mine. Paper presented at Symposium on Application of Geophysics to Engineering and Environmental Problems, Boston, MA, March, 20-25, 1994, pp. 92-107. [PRESENTED]
24. Friedel, M.J., 1994, Integrated geophysical technology for void detection and geological/hydrological characterization. U.S. Bureau of Mines - Abandoned Mine Land Geophysical Workshop, Minneapolis, MN, March 24, 1994. [PRESENTED]
25. Friedel, M.J., and E. Wedepohl, 1994, Case studies of radio wave tomography at base metal and gold ore bodies in the USA and Southern Africa. Society of Mining Metallurgy, & Exploration, Albuquerque, NM, 1994, March 27-31, pp. 32-44. [PRESENTED]
26. Moyle, P.R., J.M. Fay, and M.J. Friedel, 1994, Integrated geophysical characterization of mine-waste sites in the Coeur d’ Alene Mining District, ID. Proceedings Symposium on Application of Geophysics to Engineering and Environmental Problems, March 27-31, pp. 857-868.\
27. Jackson, M.J., M.J. Friedel, D.R. Tweeton, D.F. Scott, and T.J. Williams, 1995, Imaging underground mine structures using seismic tomography. Proceedings Symposium on Application of Geophysics to Engineering and Environmental Problems, March, 1995, pp. 112-127.
28. Scott, D. F., Williams, T. J. and Friedel, M.J., 1996, Application of seismic tomography to underground mining: Part 1, 66th Annual International Meeting: Society of Exploration Geophysics, Denver, CO, Nov. 15, pp. 2053-2056.
29. Williams, T. J., Scott, D. F. and Friedel, M.J., 1996, Application of seismic tomography to underground mining: Part 2, 66th Annual International Meeting: Society of Exploration Geophysics, Denver, CO, Nov. 15. pp. 2057-2059.
30. Scott, D.F, T.J. Williams and M.J. Friedel, 1996, Application of seismic tomography in underground mining, Proceedings 15th International Conference on Ground Control in Underground Mining, Golden, CO, Aug. 13-15. [INVITED]
31. Nieber, J.L., M.J. Friedel, and B.S. Sharratt, 1997, Modeling equations for two-dimensional coupled heat, fluid, and solute transport in variably-saturated, variably-frozen soils, CRREL Special Report 97-10: Proceedings International symposium on physics, chemistry and ecology of seasonally frozen soils, Fairbanks, Alaska, June 10-12, pp. 140-146. [INVITED]
32. Arnold, T., M.J. Friedel, and K.L. Warner, 2001, Hydrogeologic inventory of the upper Illinois River Basin – creating a large data base from well construction records. Geological Society of America April 22, 2001 in Bloomington, Illinois.
33. Friedel, M.J. 2002, Salinity issues in Western United States. Proceedings Western drought effects on water quantity and quality. American Institute of Hydrology, Minneapolis, MN, August 9, 2002. [INVITED and PRESENTED]
34. Friedel, M.J., 2002, Quantifying Ground-Water Recharge Using a Coupled Water-Heat-Solute Transport Model: Optimal Nonlinear Parameter Estimation, Nonuniqueness, and Predictive Uncertainty, Trans. AGU fall meeting, San Francisco, CA, Dec 10, 2002. [PRESENTED]
35. Friedel, M.J., 2003, Predicting maximum likely debris flows: from pre-fire streamflow measurements to post-fire hazard mapping, presentation at Colorado Stream Gaging Symposium, 2003, Breckenridge, CO, May 8, 2003. [INVITED and PRESENTED]
36. Friedel, M.J., 2008, Joint Inverse Modeling to Estimate Flood-Flow Depths and their Uncertainty in Ungauged Coastal Basins, El Salvador, Central America, Extended abstract, United States Geological Survey, 2nd Modeling Conference, Gulf Shores, Alabama, February, 10-15, 2008.
37. Friedel, M.J., 2008, Joint Inverse Modeling to Estimate Extreme Rainfall Events and their Uncertainty in Ungauged Coastal Basins, El Salvador, Central America, Extended abstract, United States Geological Survey, 2nd Modeling Conference, Gulf Shores, Alabama, February, 10-15, 2008.
38. Friedel, M.J., 2008, Application of Stochastic Modeling to Forecast Likely Urbanization Effects on Ecological Integrity in the Upper Illinois River Basin, USA, Extended abstract, United States Geological Survey, 2nd Modeling Conference, Gulf Shores, Alabama, February, 10-15, 2008.
39. Friedel, M.J., 2008. Hazards and Risks – Flooding, 2nd USGS Modeling conference, National Hazards Panel, Perdido Beach, Alabama, February, 2008. [KEYNOTE]
40. Iwashita, F., Friedel, M.J., Carlos de Souza-Filho, 2010, Surveying soil chemical weathering in Parana state/Brazil: A data mining-GIS hybrid approach, U.S. Geological Survey, 3rd Modeling Conference, Denver, Colorado, June, 2010.
41. Iwashita, F., Silvana A., Vieira Monteiro, A.M., Friedel, M.J., 2010, Evaluating the effects of positioning errors on the accuracy of species distribution models using synthetic data, U.S. Geological Survey, 3rd Modeling Conference, Denver, Colorado, June, 2010.
42. Brown, P. and Friedel, M.J., 2010, Test results comparing the new US Geological Survey Monte Carlo quantitative resource estimation simulation software application to MARK3, U.S. Geological Survey, 3rd Modeling Conference, Denver, Colorado, June, 2010.
43. Brown, P. and Friedel, M.J. 2010, Overview of new Monte Carlo software for quantitative mineral resource estimation, U.S. Geological Survey, 3rd Modeling Conference, Denver, Colorado, June, 2010.
44. Friedel, M.J., 2010, Forecasting climate change effects on ground water recharge using an unsupervised artificial neural network, U.S. Geological Survey, 3rd Modeling Conference, Denver, Colorado, June, 2010.
45. Friedel, M.J., 2010, Intelligent exploration for shallow groundwater in fractured rock systems, U.S. Geological Survey, 3rd Modeling Conference, Denver, Colorado, June, 2010
46. Friedel, M.J., 2010, Intelligent Post-fire Hydrologic and Geomorphic Landscape Modeling, U.S. Geological Survey, 3rd Modeling Conference, Denver, Colorado, June, 2010.
47. Friedel, M.J., 2010, Intelligent Post-fire Hydrologic and Geomorphic Landscape Modeling, U.S. Geological Survey, 3rd Modeling Conference, Denver Colorado, June, 2010
