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William L. Stefanov, Chief Scientist


William L. Stefanov

Area of Research/Engineering

Terrestrial Geoscience and Remote Sensing

Contact Information

ESCG / Jacobs Technology

william.l.stefanov@nasa.gov

Wk: 281-483-5139

Education

Ph.D. Geology, Arizona State University, 2000

M.S. Geology, Arizona State University, 1992

B.S. Environmental Science (Geology concentration), University of Massachusetts, 1988

Experience
   Professional Licenses

Registered Geologist, Arizona

Professional Geoscientist (Geology), Texas

Research/Engineering Interests
   Current Research

Use of remotely sensed data from various airborne, satellite, and handheld sensors to investigate geohazards; environmental geology; lunar field geology; patterns of spatial and temporal land cover change; and urban/peri-urban climate.

Application of visible, near-infrared, and thermal infrared remote sensing to soil development, sediment transport processes, and hillslope geomorphology of semiarid mountain ranges.

Investigation of thermal emission spectroscopy and linear deconvolution techniques for determination of mineralogy in rocks and soils.

   Prior Research

Determination of rheologic properties of ancient lavas and magmas in Chino Valley, Arizona using entrained xenolith distributions and physicochemical properties.

Characterization of the geochemistry and emplacement history of alkaline igneous rocks associated with the final intrusive stages of the White Mountains Batholith in New Hampshire.

Selected Publications

Stefanov, W.L., Evans, C.A., Runco, S.K., Wilkinson, M.J., and Willis, K., 2013, Astronaut photography: Handheld camera imagery from Low Earth Orbit. In Pelton, J.N., Madry, S., and Camacho-Lara, S. (eds.), Handbook of Satellite Applications. Springer, New York, pp. 683-728.

Harlan, S.L., Declet-Barreto, J.H., Stefanov, W.L., and Petitti, D., 2013, "Neighborhood effects on heat deaths: Social and environmental predictors of vulnerability in Maricopa County, Arizona." Environmental Health Perspectives 121 (2), pp. 197-204.

Evans, C.A., Wilkinson, M.J., Stefanov, W.L., and Willis, K., 2011, Training astronauts to observe Earth from the space shuttle and International Space Station, in Garry, W.B., and Bleacher, J.E., eds., Analogs for Planetary Exploration: Geological Society of America Special Paper 483, p. 67-73, doi:10.1130/2011.2483(05).

Jenerette, G.D., Harlan, S.L., Stefanov, W.L., and Martin, C.A. (2011) "Ecosystem services and urban heat riskscape moderation: Water, green spaces, and social inequality in Phoenix, USA." Ecological Applications 21 (7), pp. 2637-2651.

Stefanov, W.L., and Netzband, M. (2010) Characterization and monitoring of urban/peri-urban ecological function and landscape structure using satellite data. In Rashed, T., and J�rgens, C. (eds.), Remote Sensing of Urban and Suburban Areas, Remote Sensing and Digital Image Processing Volume 10. Springer, Dordrecht, pp. 219-244.

Golden, J.S., Chuang, W.C., and Stefanov, W.L. (2009) "Enhanced classifications of engineered paved surfaces for urban systems modeling." Earth Interactions 13 (5), pp. 1-18.

Wentz, E.A., Nelson, D., Rahman, A., Stefanov, W.L., and Roy, S.S. (2008) "Expert system classification of urban land use/cover for Delhi, India." International Journal of Remote Sensing 29 (15), pp. 4405-4427.

Stefanov, W.L., and Brazel, A.J. (2007) Challenges in characterizing and mitigating urban heat islands - a role for integrated approaches including remote sensing. In Netzband, M., Stefanov, W.L., and Redman, C. (eds.), Applied Remote Sensing for Urban Planning, Governance and Sustainability. Springer, Berlin, pp. 117-135.

Harlan, S.L., Brazel, A.J., Jenerette, G.D., Jones, N.S., Larsen, L., Prashad, L., and Stefanov, W.L. (2007) "In the shade of affluence: The inequitable distribution of the urban heat island." Research in Social Problems and Public Policy 15, pp. 173-202.

Jenerette, G.D., Harlan, S.L., Brazel, A., Jones, N., Larsen, L., and Stefanov, W.L. (2007) "Regional relationships between surface temperature, vegetation, and human settlement in a rapidly urbanizing ecosystem." Landscape Ecology 22, pp. 353-365.

Applegarth, M.T., and Stefanov, W.L. (2006) "Use of Thermal Infrared Multispectral Scanner (TIMS) imagery to investigate upslope particle size controls on arid piedmont morphology." Geomorphology 82, pp. 388-397.