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Dr. Regina DeWitt

  • Associate Professor
  • PhD, University of Heidelberg, 2002
  • Office Location: Austin 126 A (Enter through 129)
  • Office Hours: Monday, Wednesday 9:00am-10:00am; Tuesday 8:30am-10:30am; Thursday 9:30am-10:30am
  • Telephone: (252) 328-4980
  • Email:
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Simms, A. R., Ivins, E. R., DeWitt, R., Kouremenos, P., & Simkins, L. M. (2012).  Timing of the most recent Neoglacial advance and retreat in the South Shetland Islands, Antarctic Peninsula: Insights from raised beaches and Holocene uplift rates.  Quaternary Science Reviews, 47, 41-55.

Ferreira Guedes, C. C., Giannini, P. C., Sawakuchi, A. O. , DeWitt, R., Nascimento, D. R. , V.A. Aguiar, M.G. Rossi, (2011).  Determination of controls on Holocene barrier progradation through application of OSL dating: The Ilha Comprida Barrier example, Southeastern Brazil.  Marine Geology, 285 (1-4), 1-16.  

Sholom, S., DeWitt, R., Simon, S. L. , Bouville, A., & McKeever, S. W. (2011).  Emergency OSL dosimetry using different materials.  Radiation Measurements, 46 (12), 1866-1869.  

Kadereit, A., DeWitt, R., & Johnson, T. C. (in press, 2012).  Luminescence properties and optically (post-IR blue-light) stimulated luminescence dating of limnic sediments from northern Lake Malawi Chances and limitations.  Quaternary Geochronology.  

Sholom, S., DeWitt, R., Simon, S. L. , Bouville, A., & McKeever, S. W. (2011).  OSL-Based Dose Estimation Using Human Tooth Enamel.  Radiation Measurements, 46 (9), 778-782.  

Sawakuchi, A. O., Blair, M. W., DeWitt, R., Faleiros, F. M. , Hyppolito, T. N. , C.C. Ferreira Guedes, (2011).  Thermal history versus sedimentary history: OSL sensitivity of quartz grains extracted from rocks and sediments.  Quaternary Geochronology, 6, 261-272.  

Simms, A. R., Kouremenos, P., DeWitt, R., & Drewry, A. M. (2011).  A New Approach to Reconstructing Sea Levels in Antarctica Using Optically Stimulated Luminescence of Cobble Surfaces.  Quaternary Geochronology, 6, 50-60.  

Sawakuchi, A. O., DeWitt, R., & Faleiros, F. M. (2011).  Correlation between thermoluminescence sensitivity and crystallization temperatures of quartz: potential application in geothermometry.  Radiation Measurements, 46, 51-58.  

DeWitt, R., Klein, D. M., Yukihara, E. G. , Simon, s. L. , & McKeever, S. W. (2010).  Optically stimulated luminescence (OSL) of tooth enamel and its potential use in post-exposure triage.  Health Physics, 98 (2), 432-439.  

Thompson, J. W., Burdette, K. E., Inrig, E. L. , DeWitt, R., Mistry, R., W.J. Rink, D.R. Boreham, (2010).  Optically-stimulated luminescence dosimetry with gypsum wallboard (drywall).  Radiation Protection Dosimetry, 141 (1), 1-9.  

McKeever, S. W., Blair, M. W., Yukihara, E. G. , & DeWitt, R. (2010).  The effects of low ambient temperatures on optically stimulated luminescence (OSL) processes: Relevance to OSL dating of martian sediments.  Radiation Measurements, 45, 60-70.  

Timmons, E. A., Rodriguez, A. B., Mattheus, C. R. , & DeWitt, R. (2010).  Transition of a regressive to a transgressive barrier island as a function of back-barrier erosion, climate change, and low sediment supply, Bogue Banks, North Carolina, USA.  Marine Geology, 278 (1-4), 100-114.  

Simms, A. R., Aryal, N., Yokoyama, Y., Matsuzaki, H., & DeWitt, R. (2009).  Insights on a Proposed Mid-Holocene Highstand along the Northwestern Gulf of Mexico from the Evolution of Small Coastal Ponds within a Semiarid Setting.  Journal of Sedimentary Research, 79, 757-772.  

Simms, A. R., DeWitt, R., Rodriguez, A. B. , Lambeck, K., & Anderson, J. B. (2009).  Revisiting Marine Isotope Stage 3 and 5a (MIS3-5a) Sea Levels Within the Northwestern Gulf of Mexico.  Global and Planetary Change, 66, 100-111.  

savage, S. H., Keller, D. R., & Tuttle, C. A. (2008).  Archaeology in Jordan, 2007 Season.  American Journal of Archaeology, 112 (3), 509-528.  

Ankjærgaard, C., Jain, M., Kalchgruber, R., Lapp, T., Klein, D. M. , S.W.S. McKeever, A.S. Murray, P. Morthekai, (2009).  Further investigations into pulsed optically stimulated luminescence from feldspars using blue and green Light.  Radiation Measurements, 44, 576-581.  

Sawakuchi, A. O., Kalchgruber, R., Giannini, P. C. , Nascimento, D. R. , Guedes, C. C. , N.K. Umisedo, (2008).  The development of blowouts and foredunes in the Ilha Comprida barrier (Southeastern Brazil): the influence of Late Holocene climate changes on coastal sedimentation.  Quaternary Science Reviews, 27, 2076-2090.  

Savage, S. H. & Keller, D. R. (2007).  Archaeology in Jordan, 2006 Season.  American Journal of Archaeology, 111 (3), 523-574.  

Blair, M. W., Kalchgruber, R., & McKeever, S. W. (2007).  Developing Luminescence Dating for Extraterrestrial Applications: Characterization of Martian Simulants and Minerals.  Radiation Measurements, 42, 392 399.  

Kalchgruber, R., Blair, M. W., McKeever, S. W. , Benton, E. R. , & Reust, D. K. (2007).  Progress towards robotic in-situ dating of martian sediments using optically stimulated luminescence.  Planetary and Space Science, 55, 2203-2217.  

Savage, S. H. & Keller, D. R. (2006).  Archaeology in Jordan, 2005 Season.  American Journal of Archaeology, 110 (3), 471-491.  

McKeever, S. W., Kalchgruber, R., Blair, M. W. , & Deo, S. (2006).  Development of methods for in situ dating of martian sediments.  Radiation Measurements, 41, 750-754.  

Kalchgruber, R., Blair, M. W., & McKeever, S. W. (2006).  Dose recovery with plagioclase and pyroxene samples as surrogates for Martian surface sediments.  Radiation Measurements, 41, 762-767.  

Bisson, M., Nowell, A., Cordova, C., & Kalchgruber, R. (2006).  Human Evolution at the Crossroads. An Archaeological Survey in NW Jordan.  Near Eastern Archaeology, 69 (2), 73-85.  

Kalchgruber, R. & Wagner, G. A. (2006).  Separate assessment of natural beta and gamma dose rates with TL from Al2O3:C single crystal chips.  Radiation Measurements, 41 (2), 154-162.  

Cordova, C. E., Porter, J. C., Lepper, K., Kalchgruber, R., & Scott, G. (2005).  Preliminary assessment of sand dune stability along a bioclimatic gradient, North-Central and Northwestern Oklahoma.  Great Plains Research, 15, 227-249.  

Kalchgruber, R., Fuchs, M., Murray, A. S. , & Wagner, G. A. (2003).  Evaluating dose-rate distributions in natural sediments using a-Al2O3:C grains.  Radiation Measurements, 37, 293-297.  

Secu, M., Kalchgruber, R., Schweizer, S., Spaeth, J. M. , & Edgar, A. (2002).  Photostimulated Luminescence in BaX2:Eu2+ (X = Br, Cl) X-ray storage phosphors.  Radiation Effects and Defects in Solids, 157, 957-962.  

Kalchgruber, R., Goeksu, H. Y., Hochhaeuser, E., & Wagner, G. A. (2002).  Monitoring environmental dose rate using Risø TL/OSL readers with built-in sources: Recommendations for users.  Radiation Measurements, 35, 585-590.  

Eimueller, T., Kalchgruber, R., Fischer, P., Schuetz, G., Guttmann, P., G. Schmahl, M. Köhler, K. Prügl, M. Scholz, F. Bammes and G. Bayreuther, (2000).  Quantitative imaging of magnetization reversal in FeGd multilayers by magnetic transmission x-ray microscopy.  Journal of Applied Physics, 87, 6478 6480.  

Habermann, J., Schilles, T., Kalchgruber, R., & Wagner, G. A. (2000).  Steps towards surface dating using luminescence.  Radiation Measurements (32), 847-851.  

Fischer, P., Eimueller, T., & Kalchgruber, R. (1999).  X-ray magnetic circular dichroism used to image magnetic domains.  Journal of Synchrotron Radiation, 6, 688-690.  

DeWitt, R. & McKeever, S. W. (2011).  ODIN: A Prototype Luminescence Reader for in situ Dating of Martian Regolith.  2011 IEEE Aerospace Conference. Big Sky, Montana.  

Simms, A. R., Ivins, E., DeWitt, R., Kouremenos, P., & Simkins, L. (in press, 2012).  Changes in relative sea level during the "Little Ice Age" within the South Shetland Islands of Antarctica.  SLALOM 2012.  

Simms, A. R., Anderson, J. B., DeWitt, R., & Lambeck, K. (in press, 2012).  Subsidence in the northwestern Gulf of Mexico: A late Pleistocene Texas perspective.  AAPG 2012 Annual Convention & Exhibition.  

Simkins, L. M., Simms, A. R., & DeWitt, R. (in press, 2012).  Relative sea-level history of Marguerite Bay derived from optically stimulated luminescence-dated beach cobbles.  XXXII SCAR Open Science Conference and SCAR Meetings.  

Cordova, C. E., Rollefsen, G. E., Kalchgruber, R., Wilke, P., & Quintero, L. (2008).  Natural and Cultural Stratigraphy of 'Ayn as-Sawda, Azraq Wetland Reserve: 2007 Excavation Report and Discussion of Finds.  Annual of the Department of Antiquities of Jordan, 52, 417-425.  

Cordova, C. E., Nowell, A., Bisson, M., Kalchgruber, R., & al-Nahar, M. (2007).  Geomorphological assessment of Middle Paleolithic sites on the Madaba Plateau.  Annual of the Department of Antiquities of Jordan, 51, 329-337.  

191-195 (2000).