Demian Gomez

Demian Gomez

Demian Gomez

The Ohio State University

(901) 900-7324

125 South Oval Mall, Columbus OH 43210

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Areas of Expertise

  • Geodesy
  • Geophysics
  • Finite element modeling
  • Earthquake cycle


  • Ph.D. in Earth Sciences (Geophysics), The University of Memphis, USA. (2016)
  • M.Sc. in Earth Sciences (Geophysics and Seismology), The University of Memphis, USA. (2014)
  • Surveying Engineering, Universidad de Buenos Aires (UBA), Argentina. (2011)

Research Interests:

I'm a geophysicist and a geometrical geodesist doing active research on reference frame realizations, both regional and global. These frames allow me to investigate geodynamic processes such as the earthquake cycle and periodic loading and unloading of the earth's crust. I'm an avid user of GAMIT/GLOBK and I've developed a Python wrapper to do parallel processing of GPS data. You can find the code here:

Software Downloads:

NRCan PPP (GPSPACE): See GitHub repository: I've compiled it in Windows 7 using MinGW for Win64. To download binary (including a test), follow this link. Also, you can check this GitHub repository which includes the source code and all dependencies needed to compile. Thanks to GitHub user lahayef.

Crude and simple Windows batch file and gawk script to download and run through GPSPACE RINEX data from IGS. Requires gawk, wget, gzip, and crx2rnx to work. Download from here.

Academic Experience:

Assistant Professor at the Division of Geodetic Science, School of Earth Sciences, The Ohio State University: In change of graduate and undergraduate geodesy courses. Geometric reference frame research and parallel computing applications to GNSS geodesy. Chair of the Geodetic Science Graduate Studies Committee.

Chief Geodesist at National Geographic Institute of Argentina: Development of the first operational kinematic reference frame in the Americas. Expansion of Argentina’s CORS network by ~10% (114 stations). Implementation of 3-node, 112-core processing cluster using GAMIT/GLOBK. Management of up to 15 simultaneous projects with measurable results.

Postdoctoral Researcher at The Ohio State University: Development of processing tools and parallel cluster at the School of Earth Sciences based on Precise Point Positioning and GAMIT/GLOBK. Design and development of software to analyze gravity observations (network adjustment).

Research Assistant at The University of Memphis: Design and implementation of hardware for CORS in harsh environments. Deployment of 10+ CORS in Argentina, installation and measurement of 50+ campaign sites after the 2010 Maule earthquake in Chile. Field campaign in Antarctica for the Polar Earth Observing Network project.

Recent Publications:

Sobrero, F. S., Bevis, M., Gómez, D. D., Wang, F. (2020). Logarithmic and exponential transients in GNSS trajectory models as indicators of dominant processes in postseismic deformation. Journal of Geodesy, 94(9), 84.
Cappellotto, L., Acosta, A. M. C., Pérez, D. J., Orgeira, M. J., Gómez, D. D. (2020). Determinación de alta precisión de la altura del nivel del mar alcanzada por la ingresión Belgranense para el sector norte de Buenos Aires y sur de Santa Fe y Entre Ríos, 12.
Piñón, D. A., Gómez, D., Smalley, R., Cimbaro, S. R., Lauría, E. A., Bevis, M. G. (2018). The History, State, and Future of the Argentine Continuous Satellite Monitoring Network and Its Contributions to Geodesy in Latin America. Seismological Research Letters.
Gómez, D., Bevis, M., Pan, E., Smalley, R. (2017). The influence of gravity on the displacement field produced by fault slip. Geophysical Research Letters.doi:
Luna, D., Perez, D., Cifuentes, A., Gomez, D. (2017).Three-Cornered Hat Method via GPS Common-View Comparisons. IEEE Transactions on Instrumentation and Measurement, 1–5.
Gómez, D., Piñón, D. A., Smalley, R., Bevis, M., Cimbaro, S. R., Lenzano, L. E., Barón, J. (2015) Reference frame access under the effects of great earthquakes: a least squares collocation approach for non-secular post-seismic evolution, Journal of Geodesy, doi:10.1007/s00190-015-0871-8.
Gómez, D., Smalley, R., Langston, C., Piñón, D., Cimbaro, S., Bevis,M., Kendrick, E., Barón, J., Báez Soto, J. C., Parra, H. (2015). Co-seismic deformation of the 2010 Maule, Chile earthquake: Validating a least squares collocation interpolation, GeoActa, 40(1), 401.
Gómez, D., R. Smalley, Jr., C. A. Langston, T. J. Wilson, M. Bevis, I. W. D. Dalziel, E. C. Kendrick, S. A. Konfal, M. J. Willis, D. A. Piñón, et al., Virtual array beamforming of GPS TEC observations of coseismic ionospheric disturbances near the Geomagnetic South Pole triggered by teleseismic megathrusts, J. Geophys. Res. Space Physics (2015), 120, 9087–9101, doi: 10.1002/2015JA021725.
Gómez, D., C. Langston, and R. Smalley Jr., A Closed-Form Solution for Earthquake Location in a Homogeneous Half-Space Based on the Bancroft GPS Location Algorithm, Bulletin of the Seismological Society of America (2015), doi: 10.1785/0120140067.

Recent Conferences

Smalley, R., Dalziel, I. W., Lawver, L. A., Gómez, D., Teferle, F. N., Saustrup, S., Hunegnaw, A. (2019). The current tectonic setting of South Georgia Island based on GPS geodetic and marine seismic reflection data. Presented at the AGU Fall Meeting 2019, AGU.
Figueroa, M., Gomez, D., Smalley, R., Bevis, M. G., Alvarado, P. M., Baigorri, H. (2019). Developing Coseismic Deformation Models for Geodetic Applications. Presented at the AGU Fall Meeting 2019, AGU.
Gomez, D., Smalley, R. (2019). GPS Virtual Array Beamforming of Ionospheric Total Electron Content Disturbances Associated with Solar Eclipses. Presented at the AGU Fall Meeting 2019, AGU.
Gómez, D. D., H.J. Guagni, C.A. Acosta, D.A. Piñón, S.R. Cimbaro (2019) Actualización del marco de referencia POSGAR07, Simposio SIRGAS 2019
Gómez, D. D., M. Bevis, D. Piñón, S. Cimbaro (2019) Towards a kinematic geodetic reference frame: The challenges of the implementation of the SIRGAS Frame and ITRF in Argentina, Simposio SIRGAS 2019
Bevis, M., A. Brown, D. Gómez, E. Kendrick, D. Caccamise, C. Saez. Strategies for promoting the consistency and usability of geometrical reference frames (Invited). AGU Fall Meeting 2018.
Echalar, A., M. Bevis, D. Gómez, K. Alghren (2018) Establecimiento de la red gravimétrica del Estado Plurinacional de Bolivia, Simposio SIRGAS 2018
Gómez, D.D., H.J. Guagni, D.A. Piñón, S.R. Cimbaro, M. Bevis (2019) Nuevo clúster de procesamiento GNSS científico del Instituto Geográfico Nacional, Simposio SIRGAS 2018
Smalley, R., M. Bevis, P. Svarka, E. Kendrick, D. Gómez. S. R. Cimbaro, H. Parra and L. Lenzano. Glacial Isostatic Adjustment in Patagonia: A Rapid Interaction of Climate and Tectonics. AGU Fall Meeting 2018.
Saddler, D., T. Willson, M. Bevis, R. Smalley, I. Dalziel, P. Matheny, S. Konfal, D. Gómez, E. Kendrick. Analysis of Present-Day Horizontal Crustal Motions in West Antarctica. AGU Fall Meeting 2018.
Gómez, D. D., D. Piñón, M. Bevis, H. Guagni, A. Acosta (2019) Nuevo servicio de posicionamiento puntual preciso (PPP) para la República Argentina, Simposio SIRGAS 2017
A. Echalar, D. Gómez, C. de La Cruz, A. Olivera (2017) Avances del sistema de referencia geodésico del estado plurinacional de Bolivia, Simposio SIRGAS 2017
Gómez, D. D., D.A. Piñón, R. Smalley, M.G. Bevis, S.R. Cimbaro (2019) Nuevo modelo de predicción de trayectorias GNSS para la República Argentina: deformación co- y post-sísmica del sismo de Maule, Simposio SIRGAS 2016
Gómez, D. D. (2017), Alternativas para la actualización del modelo de trayectorias GNSS VEL-Ar, El ojo del Cóndor, 8, 52–55.
Gómez, D., R. Smalley, C. A. Langston, T. Wilson, M. Bevis, I. Dalziel, E. Kendrick, S. Konfal, M. Willis, D. A. Piñón, S. R. Cimbaro and D. Caccamise. Ionospheric total electron content signatures of earthquakes in Antarctica. The University of Memphis 27th Annual Student Research Forum.
Gómez, D., R. Smalley, D. Piñón and S. Cimbaro (2014). Colocación por mínimos cuadrados de la deformación co-sísmica del sismo de Maule, Chile 2010: Estimación de observaciones mínimas. XXVII Reunión Científica de la Asociación Argentina de Geofísicos y Geodestas.
Gomez D. and R. Smalley (2014). Investigating Polar ionospheric signals using GPS virtual arrays.
Gomez D., C. A. Langston and R. Smalley (2014). A linear formulation for earthquake location in a homogeneous half-space based on the Bancroft algorithm developed for GPS location.
Gómez, D. and S. Cimbaro (2014). The International Time Service of the National Geographic Institute (IGNA laboratory), Argentina. RevMexAA(SC) Vol 43, pp. 38–38 24.
Piñón, D., D. Gómez, S. Cimbaro, A. Raffo and H. Guagni (2013) Towards a New Velocity Model for Argentina. IAG Scientific Assembly 2013.
Gómez, D. and S. Cimbaro (2011). Scientific applications for atomic standards and their development at IGN. Eye of the Condor Magazine, Instituto Geográfico Nacional.
Gómez, D. (2011). CORS installations. First national congress of surveying engineering students, Catamarca.
Gómez, D., A. Cifuentes and S. Cimbaro (2011). How to measure time. Tecnópolis national fair.
Gómez, D., D. Piñón and S. Cimbaro (2011). NTRIP Service in Argentina. International Union of Geodesy and Geophysics Conference in Melbourne, Australia.
Schvarzer, O., S. Cimbaro, and D. Gómez (2011), Scientific technical applications of atomic clocks and their development at IGN, El ojo del Cóndor, 1, 38–39.

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