Franklin & Marshall College Franklin & Marshall College

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  • Tim Bechtel

    Visiting Professor of Geosciences
    717-358-4750
    Office: HAC P-118
    Office Hours: M 16:30-18:30, Tu 18:00-19:30, W 10:00-11:00, or appointment

    Professional Biography

    Tim grew up on the Rockdale Run Formation, with a sinkhole in the backyard of his home (which may account for his continued interest in karst).  He has taught Geophysics, Karst Hydrogeology, Geocomputation and Environmental Geology at the University of Pennsylvania and Drexel University.  Tim is an Associate Editor for Hydrogeology Journal, and a member of the Karst Commission of the International Association of Hydrogeologists.  He is also a member of international scientific collaborations that are funded by the North Atlantic Treaty Organization, Science for Peace and Security (NATO SPS) program, the US-Russia-Japan-EU International Science and Technology Center (ISTC), and the Russian Foundation for Basic Research (RFBR) to study novel technologies for humanitarian de-mining, remote detection of disaster victims buried beneath rubble, avalanches, etc., and non-destructive subsurface testing for historic and cultural preservation.  He is also a founding principal (with his wife Felicia) of Enviroscan, Inc., a geophysical contracting firm.  He now lives with his wife, three daughters and dog (also female) on the Conestoga Formation (with no sinkholes…yet) in Lancaster.

    Education

    Ph.D., Geophysics, 1989, Brown University, RI

    M.Sc., Rock Mechanics, 1984, Brown University, RI

    B.Sc., Geology, 1982, Haverford College, PA

    Research Interests

    Geophysical methods for karst hydrogeology

    Landmine and UXO detection and discrimination

    Archaeological geophysics

    Non-destructive testing of artworks and historic architecture

    Land instability (subsidence, landslide, rock fall)




    Grants & Awards

    NATO SfP Development Grant 2013-2014
    Engineering UK Grant 2011
    Royal Society of London Grant 2009-2010
    NATO Collaborative Linkage Grant 2006-2009
    ISTC Grant 2005-2008
    ISTC Grant 2002-2005

    Publications

    1.      Zhuravlev, A., Ivashov, S., Razewig, V., Vasiliev, I, and Bechtel, T. (2014) Shallow Depth Subsurface Imaging with Microwave Holography, Proceedings of SPIE, vol. 9072, 9072x

    2.      Zhuravlev, A., Ivashov, S., Razewig, V., Vasiliev, I, and Bechtel, T. (2014) Inverse Synthetic Aperture Radar Imaging for Concealed Object Detection on a Naturally Walking Person, Proceedings of SPIE, vol. 9074, 907402

    3.      Moser, A., Walter, R., Bechtel, T., Ismat,  Z., Potter, N. (2014) Investigation of Structural Control of Seemingly Anomalous Groundwater Flow at Boiling Springs, Pennsylvania, NE-GSA 2014, Lancaster, PA

    4.      Bechtel, T.: Mise-á-la-masse; An Old Geophysical Method Newly Re-purposed for Characterizing Karst Aquifers, NE-GSA 2014, Lancaster, PA

    5.      Capineri, L., Arezzini, I., Calzolai, M., Windsor, C., Inagaki, M., Ivashov, S. & Bechtel, T. (2013) High Resolution Imaging with a Holographic Radar Mounted on a Robotic Scanner, PIERS 2013, Stockholm, Sweden.

    6.      Inagaki, M., Bechtel, T., Capineri, L. & Ivashov & Windsor, C.  (2013) Analytical Approach for RASCAN Radar Images of Dinosaur Footprints through Basic Experiments, PIERS 2013, Stockholm, Sweden.

    7.      Domaracki, M.,  Jerolmack, D. & Bechtel, T. (2013) A GPR Study of Parabolic Dune Stratification, White Sands New Mexico, PIERS 2013, Stockholm, Sweden.

    8.      Bechtel, T., Capineri, L., Windsor, C., Inagaki, M. & Ivashov, S. (2013) A Novel Method for Developing Receiver Operating Characteristic (ROC) Curves for Target Discrimination by Penetrating Radar, PIERS 2013, Stockholm, Sweden.

    9.      Inagaki, M., Bechtel, T., Capineri, L., Ivashov, S. & Windsor, C. (2013) 恐竜の足跡化石のレーダ画像に見る比誘電率の微小変化, Society of Exploration Geophysics Japan, Tokyo, Japan.

    10.   Bechtel, T., Hedden, C., Mizer, JD., Bellmann, U., Truebe, S., Dresang, K., and Bechtel, E. (2013) In-Cave and Surface Geophysics to Detect a “Lost” River in the Upper Levels of the Mammoth Cave System, Kentucky, Mammoth Cave National Park Symposium Proceedings, February 2013, Mammoth Cave National Park, KY.

    11.   Capineri, L., Zandonai, F., Inagaki, M., Razevig, V., Ivashov, S., Windsor, C., & Bechtel, T. (2013)  RASCAN holographic radar for detecting and characterizing dinosaur tracks, 7th International Workshop on Advanced Ground Penetrating Radar, IWAGPR-2013, Nantes, France.

    12.   Capineri, L., Ivashov, S., & Bechtel, T. (2012) The holographic method in subsurface radar. in Taylor, J. (editor) CRC Practical Handbook of UWB Radar Imaging, Taylor and Francis, 2012.

    13.   Bechtel, T., Hedden, C., Mizer, JD., Bellmann, U., Truebe, S., Dresang, K., & Bechtel, E. (2013) In-Cave and Surface Geophysics to Detect a “Lost” River in the Upper Levels of the Mammoth Cave System, Kentucky, Proc. 39th IAH Congress, Sep 16-21, 2012 Niagara Falls, Canada: 105-106.

    14.   Ivashov, S., Razevig, V., Vasiliev, I., Zhuravlev, A., Bechtel, T., Capineri, L., Falorni, P., and Lu, T. (2012) Holographic Subsurface Radar as a Device for NDT of Construction Materials and Structures, Nondestructive Testing of Materials and Structures, edited by Büyüköztürk, Oral, Taşdemir, Mehmet Ali Güneş, Oğuz; Akkaya, Yılmaz, RILEM Bookseries, Vol. 6, 2012, XXXII, pp. 799-804, 1277p.

    15.   Windsor, C., Capineri, L., & Bechtel, T. (2012) Detection of simulated buried plastic antipersonnel landmines in the presence of battlefield clutter using holographic radar, Insight vol. 54 no. 6.

    16.   Anishchenko, L.N., Demendeev, A.A., Ivashov,S.I., Razevig,V.V., Vasiliev, I, & Bechtel, T.D. (2012) Holographic Radar in Breast Cancer Imaging, RADARCON 2012, Atlanta, GA.

    17.   Ivashov, S.I., Razevig, V.V., Vasiliev, I.A., Zhuravlev, A.V., Bechtel, T.D., Capineri, L., Falorni, P., & Lu, T. (2012) Holographic Subsurface Radar as a Device for NDT of Construction Materials and Structures, International Symposium on Nondestructive Testing of Materials and Structures, in O. Büyüköztürk et al. (eds.), Nondestructive Testing of Materials and Structures, RILEM Bookseries 6 pp. 799-804.

    18.    Capineri, L, Falorni, P, Ivashov, S, Razevig, V., Vasiliev, I., Zhuravlev, A., & Bechtel, T. (2012), Radar Olografico Subsuperficiale: Tecnologie e Applicazioni; VIII Workshop di Geofisica, Museo Civico di Rovereto pp. 31-58

    19.   Bechtel, T.D., Capineri, L., Falorni, P., Inagaki, M., Ivashov, S., & Windsor, C. (2012) Investigation of holographic radar capabilities for the detection of shallow buried plastic antipersonnel landmines, PIERS 2012, Kuala Lumpur, Malaysia.

    20.   Ivashov, S. I., Razevig V.V., Vasiliev, I.A., Zhuravlev, A.V., Bechtel, T.D., & Capineri, L. (2011) Holographic Subsurface Radar of RASCAN Type: Development and Applications, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, v. PP, no. 99. 

    21.   Ivashov, S.I., Razevig, V.V., Vasiliev, I.A., Zhuravlev, A.V., Bechtel, T.D., Capineri, L., Falorni, P., & Lu, T. (2011) Holographic Subsurface Radar as a Device for NDT of Construction Materials and Structures, International Symposium on Nondestructive Testing of Materials and Structures, May 15-18, 2011, Istanbul, Turkey, p. 28.

    22.   Bechtel, T., Capineri, L., Falorni, P, Inagaki, M., Zhuravlev, A., Razevig, V, Ivashov, S, & Windsor, C. (2011) Detection of Latent Damage from Insect Activity in Wooden Structures through the use of Holographic Subsurface Radar, PIERS 2011, Marrakesh, Morocco.

    23.   Inagaki, M., Bechtel, T., & Razevig, V. (2011) Interference from the Second Layer in Holographic Radar, PIERS 2011, Marrakesh, Morocco.

    24.   Ivashov, S. Razevig, V., Vasiliev, I., Zhuravlev, A., Bechtel, T., Capineri, L., Falorni, P., & Lu, T. (2011) Holographic Subsurface Radar RASCAN-4 as a Device for NDT of Construction Materials and Structures, NDTMS-2011, International Symposium on Nondestructive Testing of Materials and Structures, Istanbul, Turkey.

    25.   Capineri, L. & Bechtel, T.D. (2010) Il radar olografico come nuovo metodo di indagine per la valutazione di elementi strutturali e architettonici, VII Workshop di Geofisica, Museo Civico di Rovereto , pp. 10-20

    26.   В.В. Разевиг, А.С. Бугаев, С.И. Ивашов, И.А. Васильев, А.В. Журавлев, Т. Биктел, Л. Капинери (2010) Экспериментальная оценка параметров голографических подповерхностных радиолокаторов в сравнении с оптической голографией, Радиотехника.

    27.   Razevig, V., Ivashov, S., Vasiliev, I., Zhuravlev, A., Bechtel, T., & Capineri, L. (2010) RASCAN Holographic Radars as a Means for Non-Destructive Testing of Buildings and Edificial Structures, Structural Faults and Repairs-2010, Edinburgh, UK.

    28.   Bechtel, T.D., & Capineri, L. (2010) Trade-offs between GPR and other Non-Destructive Testing techniques for evaluation of structural and architectural elements, GPR2010 Tutorial, Lecce, Italy, June 21, 2010

    29.   Inagaki, M., Razevig, V., & Bechtel, T. (2010) Experimental Approach for Determining the Received Pattern of a Rascan Holographic Radar Antenna, GPR 2010, Lecce Italy.

    30.   Capineri, L., Falorni, P. Razevig, V., Inagaki, M., Bechtel, T., & Windsor, C. (2010) Validation of a Theoretical Model for Quantitative Interpretation of holographic radar response from an inclined plane reflector, GPR 2010, Lecce Italy.

    31.   Razevig, V., Ivashov, S., Vasiliev, I., Zhuravlev, A., Bechtel, T., & Capineri, L. (2010) Advantages and Restrictions of Holographic Subsurface Radars, GPR 2010, Lecce Italy.

    32.   Capineri, L., Falorni, P., Ivashov, S., Zhuravlev, A., Vasiliev, I., Razevig, V., Bechtel, T., & Stankiewicz, G. (2010) Subsurface Radar and Infrared Thermography for Diagnosis of the Conditions of Historical Structures and Artworks" Near Surface Geophysics, in press.

    33.   Bechtel, T., Cassidy, M., Inagaki, M., Windsor, C., Capineri, L., Falorni, P., Bulleti, A., Valentini, S., Borgioli, G., Ivashov, S., Zhuravlev, A., Razewig, V., Vasiliev, I., & Bechtel, E. (2009) The Donegal Sign Tree: A Local Legend Confirmed with Holographic Radar and 3-D Magnetics, Eos Trans. AGU, 90 (22).

    34.   Goldscheider, N. & Bechtel, T.D. (2009) The housing crisis from underground: Damage to a historic town by geothermal drillings through anhydrite, Staufen, Germany.  HYDROGEOLOGY JOURNAL, v. 17 no. 3, pp. 491-493.

    35.   Liu, L., Ivashov, S., Bechtel, T., & Capineri, L. (2009) Comparison of UWB Impulse, FMCW, and Noise Radar for Through-wall Bioradiolocation with Finite Difference Time Domain Simulations. Proceedings of the Progress in Electromagnetics Research Symposium, PIERS 2009, August 18-21, Moscow, Russia, pp.230-237.

    36.   Inagaki, M., Windsor, C.G., Bechtel, T.D., Bechtel, E., Ivashov, S., & Zhuravlev, A. (2009) Three-Dimensional Views of Buried Objects from Holographic Radar Imaging.  Proceedings of the Progress in Electromagnetics Research Symposium, PIERS 2009, August 18-21, Moscow, Russia, pp.284-287.

    37.   Capineri, L., Falorni, P., Ivashov, S., Zhuravlev, A., Vasiliev, I., Razevig, V., Bechtel, T., & Stankiewicz, G. (2009) Combined Holographic Subsurface Radar and Infrared Thermography for Diagnosis of the Conditions of Historical Structures and Artworks, Geophysical Research Abstracts, v. 11, EGU2009-5343-2, EGU General Assembly, Vienna, Austria.

    38.   Windsor, C.G, Bulletti, A., Capineri, L., Falorni, P., Inagaki, M., Bechtel, T.D., Bechtel, E., Zhuravlev, A., & Ivashov, S. (2009) Depth Information from Holographic Radar Scans. Proceedings of the Progress in Electromagnetics Research Symposium, PIERS 2009, August 18-21, Moscow, Russia, pp. 716-720.

    39.   Windsor, C.G., Bulletti, A., Capineri, L., Falorni, P., Valentini, S., Borgioli, G., Inagaki, M., Bechtel, T.D., Bechtel, E., Zhuravlev, A., & Ivashov, S.  (2009)  A Single Display for RASCAN 5-frequency 2-polarisation Holographic Radar Scans. PIERS ONLINE, Vol. 5, No. 5, 2009, pp.496-500.

    40.   Freed, C., Doheny, E., & Bechtel, T.  (2009) Determination of the Magnetic Viscosity for Cold-Rolled Carbon-Steel 55-Gallon Drums in Earths Magnetic Field. Paper 110, 22nd Annual Symposium on the Applications of Geophysics to Engineering and Environmental Problems (SAGEEP), March 28-31, 2009, Austin, TX, USA.

    41.   Leipert, M., Sirkis, D., Donovan, B., & Bechtel, T. (2009) Failure Leads to Success: Innovative Geophysics for Detecting Potential Transmissive Zones in an Aquitard.  Tenth International Symposium on In-Situ and On-Site Bioremediation, May 5-8, 2009, Baltimore, MD  USA.

    42.   Capineri, L. Falorni, P., Borgioli, G., Bechtel, T., Ivashov, S., Zhuravlev, A., Vasiliev, I., Paradiso, M., Cartocci, G. (2008) Application of the Holographic Radar RASCAN to Cultural Heritage Inspection, Workshop on “Advances in Remote Sensing for Archaeology and Cultural Heritage management”, Rome 30 September - 4 October, 2008.

    43.   Capineri, L., Falorni, P., Borgioli, G., Bulletti, A., Valentini, S., Ivashov, S., Zhuravlev, A., Razevig, V., Vasiliev, I., Paradiso, M., Inagaki, M., Windsor, C., & Bechtel, T. (2009)  Application of RASCAN Holographic Radar to Cultural Heritage Inspections. Archaeological Prospection, v. 16, pp. 218-230.

    44.   Capineri, L., Ivashov, S., Bechtel, T., Zhuravlev, A., Falorni, P., Windsor, C., Borgioli, G., Vasiliev, I., & Sheyko, A. (2008) Comparison of GPR Sensor Types for Landmine Detection and Classification, Proceedings of the 12th International Conference on Ground-Penetrating Radar, GPR 2008, 16-19 June 2008, University of Birmingham, UK.

    45.   Ivashov, S., Razevig, V., Vasilyev, I., Zhuravlev, A., Bechtel, T., & Capineri, L. (2008) The Holographic Principle in Subsurface Radar Technology, International Symposium to Commemorate the 60th Anniversary of the Invention of Holography, Springfield, Massachusetts USA, October 27-29, 2008.

    46.   Bechtel, E., Ivashov, S., Bechtel, T., Arsenyeva, E., Zhuravlev, A., Vasiliev, I., Razewig, V., & Sheyko, A. (2008) Experimental Determination of the Resolution of the RASCAN-4/4000 Holographic Radar System, Proceedings of the 12th International Conference on Ground-Penetrating Radar, GPR 2008, 16-19 June 2008, University of Birmingham, UK.

    47.   Bechtel, T., & Ivashov, S. (2007) Direct Comparison of CW Bio-Radar and EKG for Detection and Monitoring of Human Pulse and Respiration, Progress in Electromagnetics Research Symposium (PIERS), Beijing, China.

    48.   Ivashov, S., Vasiliev, I., Bechtel, T., & Lu, T. (2007) Comparison between Impulse and Holographic Subsurface Radar as a Means for Non-Destructive Evaluation of Structural Materials,  Progress in Electromagnetics Research Symposium (PIERS), Beijing, China.

    49.   Lu, T., Ivashov, S., & Bechtel, T. (2007) Evaluation of Holographic Radar for NDE Evaluation of Space Shuttle Thermal Protection Tiles, SPIE Symposium on Defense & Security, Paper 6555-27, Orlando, FL.

    50.   Lu, T., Snapp, C., Chao, T., Thakoor, A., Bechtel, T., Ivashov, S.,  & Vasiliev, I. (2007) Evaluation of holographic subsurface radar for NDE of space shuttle thermal protection tiles, Sensors and Systems for Space Applications. Proceedings of SPIE, Volume 6555, 2007.

    51.   Bechtel, T., Bosch, F., & Gurk, M. (2007) Geophysical Methods in Karst Hydrogeology, in Methods in Karst Hydrogeology, Goldscheider, N. and Drew, D. (eds.), Taylor & Francis, London.

    52.   Bechtel, T., & Baughman, S. (2006) Geophysical Detection and Imaging of a Lost Mid-Pleistocene Bone Cave Beneath Valley Forge National Historical Park, Geological Society of America National Meeting, Philadelphia, PA, USA.

    53.   Bechtel, T., Ivashov, S., Razevig, V., Sheyko, A., & Vasilyev, I. (2006) Non-Destructive Evaluation of Dielectric Structural Materials by Holographic Subsurface Radar.  Progress in Electromagnetics Research Symposium (PIERS), Cambridge, MA, USA.

    54.   Baughman, S., Bechtel, T., DeMayo, T., & Hojdila, J. (2006) Port Kennedy Bone Cave – Rediscovered with Geophysics. Geological Society of America Abstracts with Programs, Vol. 38, No. 2, p. 82.

    55.   Bechtel, T., Hojdila, J., Baughman, S., DeMayo, T., & Doheny, E. (2005)  Relost and refound: Detection of a paleontologically, historically, cinematically, and environmentally important solution feature in the carbonate belt of southeastern Pennsylvania. The Leading Edge; May 2005; v. 24; no. 5; p. 537-540.

    56.   Hojdila, J., DeMayo, T., Baughman, S., Bechtel, T., & Carfioli, M. (2005) The Long-Lost Cave has been Found. Park Science, v. 23, no. 2, pp. 35-36.

    57.   Bechtel, T., Ivashov, S., Razevig, V., Sheyko, A., & Vasilyev, I. (2005) Holographic Radar as a Tool for Non-destructive Evaluation of Structural Materials. SEM Annual Conference, Portland, Oregon, USA.

    58.   Sirkis, D., Stevens, G., & Bechtel, T. (2004) Remote Sensing, Visualization, and Modeling of the Diamond Coal Mine in Hazleton, PA, Proceedings of the National Meeting of the American Society of Mining and Reclamation, Lexington, KY, USA.

    59.   Hoffman, A. G.; Melick, D. F.; Clark, D. M.; & Bechtel, T. D. (1995) Abandoned Deep Mine Subsidence Investigation, and Remedial Design, I-70, Guernsey County, Ohio. Forty-Sixth Annual Highway Geology Symposium, West Virginia Geological and Economic Survey, West Virginia Division of Highways, West Virginia University, Transportation Research Board, Charleston, WV, USA.

    60.   Bechtel, T., & Wynn, J. (1991) Shallow, High-Resolution Geophysics for Archaeologists. Z Environmental Services, Houston, TX, USA.

    61.   Bechtel, T., Forsyth, D, Sharpton, V. and Grieve, R. (1990) Variations in effective elastic thickness of the North American lithosphere. Nature 343, 636-638.

    62.   Ebinger, C.J., Bechtel, T.D., Forsyth, D.W. & Bowin, C.O. (1989) Effective Elastic Plate Thicknesses Beneath the East African and Afar Domes. Journal Geophysical Research 94, 2883-2901.

    63.   Zuber, M. T., Bechtel, T. D., & Forsyth, D. W. (1989) Effective Elastic Thickness of the Lithosphere and Mechanisms of Isostatic Compensation in Australia. Journal of Geophysical Research, v. 94, no. B7, p. 9353–9367.

    64.   Bechtel, T., Forsyth, D., & Swain, C. (1987) Mechanisms Of Isostatic Compensation In The Vicinity of The East African Rift, Kenya. Geophysical Journal of the Royal Astronomical Society, v. 90; pp. 445-465.

    65.   Bechtel, T.D., Forsyth, D.W., Sharpton, V.L., & Grieve, R. (1986) Variations in the effective elastic thickness of the North American lithosphere. Eos, Transactions, American Geophysical Union v. 67, no. 16 pp. 370.

    66.   Forsyth, D.W., Bechtel, T.D., & Stewart, L.M. (1986) Rupture of separate en echelon segments of an oceanic transform fault in a single earthquake, Eos, Transactions, American Geophysical Union v. 67, no. 16  pp. 359.

    67.   Bechtel, T. D., Weeks, J. D., & Tullis, T. E. (1983) Observations of Experimentally Produced Fault Gouge. Eos Trans. AGU, 64, 834.

    68.   Tullis, T. E., Weeks, J. D., & Bechtel, T. D. (1983) Inverse Dependence of Frictional Resistance on Sliding Velocity at Elevated Normal Stress.  Eos Trans. AGU, 64, 850.

    69.   Weeks, J. D., Tullis, T. E., & Bechtel, T. D. (1983) Nonlinear Instability Effects in Experiments on Rock Friction.  Eos Trans. AGU, 64, 850. 

    Course Information

    Earth, Environment, and Humanity
    Global De-Mining
    Weapons of War: The Morality of Banned and Un-banned Weapons
    Geophysics
    Geocomputation
    Engineering Geology: Geotechnics
    Engineering Geology: Rock Mechanics
    Geoengineering
    Unconventional Petroleum Geology
    Science Teaching Internships