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Joshua Daniel Carmichael

Joshua Carmichael

Phone (505) 667-5724


  • Computational Physics and Applied Mathematics
  • Mathematics
  • Partial differential equations
  • Applied Math
  • Statistics
  • Uncertainty quantification
  • Uncertainty analysis
  • Earth and Space Sciences
  • Geophysics
  • Transient signal recognition
  • Persistent surveillance
  • Seismic analysis
  • Earthquakes
  • Materials
  • Shock physics
  • Nuclear Engineering and Technology
  • Nuclear systems - technology-oriented threat identification/resolution
  • Nuclear and Particle Physics, Astrophysics, and Cosmology
  • Detector expertise in nuclear threat reduction
  • Science of Signatures - Remote and Standoff Sensing
  • Seismic sensing and sensors
  • Ground-based sensing and sensors
  • Electromagnetics
  • Transient signal recognition,
  • Seismic analysis
  • Earthquakes
  • Real-time knowledge extraction
  • Writing & Editing
  • Technical writing
  • Proofreading



Statistical Signal Processing

Explosion Signatures


Applied Math

Current Emphasis

Multi-phenomenological detection and discrimination of explosions emplaced near Earth's surface



Ph.D., Glacial Icequake Seismology, University of Washington Seismic Response in Hydraulically-Active Polar Ice: Observations and Methods, 2013

M.S., Applied Mathematics, University of Washington, 2008

B.S., Physics, Washington State University, 2004


LANL Positions

Scientist II,  Earth and Environmental Sciences, Seismo-Acoustics Group (EES-17), September 2016 - December 2019

Postdoctoral Researcher,  Earth and Environmental Sciences, Geophysics Group (EES-17), September 2013 - 2016


Professional Societies

AGU - American Geophysical Union

SSA - Seismological Society of America

IEEE - Institute of Electrical and Electronics Engineers



Published as of 18-December-2019

Joshua D Carmichael & Laura Mullane. (2019). What’s Shaking in Oklahoma? Scientific American Observation Blog (Policy and Ethics), Published Online 06-Dec-2019

Joshua D Carmichael (2019). Erratum to A Waveform Detector that Targets Template‐Decorrelated Signals and Achieves Its Predicted Performance, Part I: Demonstration with IMS Data. Bulletin of the Seismological Society of America.

Joshua D Carmichael, & Robert Nemzek (2019). Uncertainty in the Predictive Capability of Detectors that Process Waveforms from Explosions. arXiv preprint arXiv:1906.09350.

Joshua D Carmichael (2019). Narrowband Signals Recorded Near a Moulin that are not Moulin Tremor: A Cautionary Short Note. Annals of Glaciology. (In Review, Mancript ID AOG-79-0146). Omar E. Marcillo and Joshua Carmichael (2018). The detection of wind‐turbine noise in seismic records. Seismological Research Letters 89, no. 5 : 1826-1837.

Omar Marcillo, Stephen Arrowsmith, Maurice Charbit, and Joshua Carmichael. Infrasound signal detection: re-examining the component parts that makeup detection algorithms. In Infrasound Monitoring for Atmospheric Studies, pp. 249-271. Springer, Cham, 2019.

Joshua Carmichael (2016). A Waveform Detector that Targets Template-Decorrelated Signals and Achieves its Predicted Performance: Demonstration with IMS Data (Part I) Bulletin of the Seismological Society of America, 106(5), 16 pages.

Joshua Carmichael and Hans Hartse (2016). Threshold magnitudes for a multichannel correlation detector in background seismicity, Bulletin of the Seismological Society of America 106(2), 478-498.

Carmichael, J.D; Robert Nemzek; Stephen Arrowsmith; Kari Sentz (2016), Fusing geophysical signatures of locally recorded surface explosions to improve blast detection Geophysical Journal International 204 (3): 1838-1842 doi: 10.1093/gji/ggw006

Joshua Carmichael, I.R. Joughin, M.D. Behn, S. Das, M.A. King, L. Stevens and D. Lizarralde (2015), Seismicity on the Western Greenland Ice Sheet: Surface Fracture in the Vicinity of Active Moulins, Journal of Geophysical Research, Earth Surf. 120, doi: 10.1002/2014JF00398

Joshua Carmichael Melt-Triggered Seismic Response in Hydraulically-Active Polar Ice: Observations and Methods, Ph.D. thesis, University of Washington, 2013

Joshua Carmichael, E. Pettit, M. J. Hoffman, A. G. Fountain, and B. Hallet, Seismic Multiplet Response Triggered by Melt at Blood Falls, Taylor Glacier, Antarctica, Journal of Geophysical Research, doi:10.1029/2011JF002221

Under peer review as of 18-December-2019

Carmichael, J.D. and Nemzek, R. (2019). Fused Multi-Physics Waveforms Improve Event Detection: Predictive Capability and Performance. Geophysical Journal International. Submitted, under revision.

Delbridge, B. G., Carmichael, J.D, Nadeau, R.M., Shelly, D.R., and Bürgmann, R. Measurements of Slow Slip Events Southeast of Parkfield, CA. Journal of Geophysical Research: Solid Earth. 20 pgs. Under review.

Carr, C. G., Carmichael, J.D, Pettit, E.C., and Truffer, M. The Influence of Environmental Microseismicity on Detection and Interpretation of Small-Magnitude Events in a Polar Glacier Setting. Journal of Glaciology. 29 pgs. Under review.


Documents and Files