US Geological Survey 350 N. Akron Rd. Moffett Field, CA 94035
Geophysicist specializing in fault structure, earthquake seismology, and seismic imaging. Strong background in offshore and onshore fault characterization, seismicity-based fault modeling, and software development (Python). Experienced in both academic and government research settings.
PhD, Seismology – University of California, Santa Cruz (December 2023)
B.S Business Administration (Magna Cum Laude) – San Jose State University (December 2007)
Alongi, T., Rodriguez Padilla, A. (2026) pwrlaw_dmg: Python scripts for testing various impacts on power law behavior of fault damage zones: U.S. Geol. Surv. Software Release. https://doi.org/10.5066/P1KBHVKX
Alongi, T., Elliott, A. J., Skoumal, R. J., Shelly, D. R., & Hatem, A. E. (2026). SURF: An Automated Method for Building Nonplanar 3D Fault Models from Earthquake Hypocenters. Seismological Research Letters. https://doi.org/10.1785/0220250126
Milani, R.A., J.L. Vermeer, S.B. DeLong, B.E. Philibosian, C. Wikstrom, T.V. Alongi, and M.N. Hammer (2025). Point cloud and digital elevation data from terrestrial laser scanning of the San Andreas Fault and coast redwood trees near Fort Ross, California: U.S. Geological Survey Data Release, https://doi.org/10.5066/P14AWYPD
Alongi, T., & Skoumal, R. (2025). SURF: A python package for reconstructing faults from seismicity patterns (Version 1.0.0). U.S. Geol. Surv. Software Release. https://doi.org/10.5066/P1MM9HMW
Alongi, T., Brodsky, E. E., Kluesner, J., & Brothers, D. (2024). Characteristics of the fault damage zone from high-resolution seismic imaging along the Palos Verdes Fault, California. AGU Advances, 5(4), https://doi.org/10.1029/2023AV001155.
Alongi, T., Balster-Gee, A.F. Kluesner, J.W., Snyder, G.R., Brothers, D.S., Conrad, J.E., Marcuson, R.K., (2024), Multichannel minisparker and chirp seismic reflection data collected during USGS field activity 2021-614-FA along the Palos Verdes Fault Zone: U.S. Geological Survey data release, https://doi.org/10.5066/P9HCOSDF
Alongi, T., Brodsky, E.E., Kluesner, J.W., Brothers, D.S., (2022), Using Active Source Seismology to Image the Palos Verdes Fault Damage Zone as a Function of Distance, Depth, and Geology, Earth and Planetary Science Letters https://doi.org/10.1016/j.epsl.2022.117871
Alongi, T., Balster-Gee, A.F.,Kluesner, J.W., Sliter, R.W., (2022), Reprocessed multichannel seismic-reflection data collected offshore central and Southern California during USGS field activity L-4-90-SC: U.S. Geological Survey data release,https://doi.org/10.5066/P9FOES4K
Alongi, T., Schwartz, S. Y., Shaddox, H. R., & Small, D. T. (2021). Probing the Southern Cascadia Plate Interface with the Dense Amphibious Cascadia Initiative Seismic Array. Journal of Geophysical Research: Solid Earth, 126, e2021JB022180. https://doi.org/10.1029/2021JB022180
U.S. Geological Survey — Moffett Field, CA
November 2023 – Present
University of California, Santa Cruz
July 2018 – October 2023
University of California, Santa Cruz
July 2018 – July 2021
IGPP Seismology Laboratory, UC Santa Cruz
October 2017 – June 2018
Incorporated Research Institutions for Seismology
June 2017 – September 2017
Fault complexity and roughness measured with seismicity at Parkfield, CA
What is the fault zone structure at depth: a study of creeping faults in California
Seismicity as a Fault Mapping Tool: Automated nonplanar 3D fault models with SURF (invited talk)
How is surface creep related to deep structure?: A depth-dependent geometric complexity study of the creeping San Andreas Fault
Measuring Fault Zone Complexity at Depth (talk)
Non-planar 3D Fault Models from Earthquake Hypocenters (talk)
An Automated Method for Building Non-planar 3D Fault models from Earthquake Hypocenters
What does seismicity tell us about fault geometries (talk)
Microseismicity to Model Non-planar Fault Systems (talk)
What Controls the Along Strike Variability of a Fault Damage Zone (invited talk)
From Hypocentral Seismicity Patterns to 3D Fault Models
From Hypocentral Seismicity Patterns to 3D Fault Models
Offshore Faults and Earthquakes in California (invited talk)
Constraining 3D Fault Geometry with a Data-Drive Approach at the San Andreas - Calaveras Fault Junction
Offshore Fault Damage and Slip Behavior: Insights from Microseismicity and Seismic Imaging (invited talk)
Fault Damage Zone Insights from High-Resolution Seismic Imaging and the Relationship with Fluid Seeps Along the Palos Verdes fault (talk)
Understanding Fault Damage and Slip with Marine Seismic Methods
What Controls the Shallow Fault Damage Zone and Fluid Flow? Insights from New High-Resolution Seismic Imaging (poster)
The Palos Verdes Fault damage zone from the seafloor to the basement: revealed using multi-resolution controlled source seismic reflection datasets
Using Active Source Seismology to Image a Fault Damage Zone as a Function of Depth, Distance, and Geology poster
Using Active Source Seismology to Image a Fault Damage Zone as a Function of Depth, Distance, and Geology poster
Using Active Source Seismology to Image a Fault Damage Zone as a Function of Depth, Distance, and Geology (talk)
Using Active Source Seismology to Image a Strike-Slip Fault Damage Zone as a Function of Depth, Distance, and Geology (talk)
Using Active Source Seismology to Image a Strike-Slip Fault Damage Zone as a Function of Depth, Distance, and Geology (talk)
Using Active Source Seismology to Image a Strike-Slip Fault Damage Zone as a Function of Depth, Distance, and Geology (talk)
Probing the Southern Cascadia Plate Interface with a Dense Amphibious Cascadia Initiative Seismic Array (talk)
Probing the Southern Cascadia Plate Interface with a Dense Amphibious Cascadia Initiative Seismic Array (talk)
Probing the Southern Cascadia Plate Interface with a Dense Amphibious Cascadia Initiative Seismic Array (talk)
Fault Damage Zones in 3D with Active-Source Seismic Data poster
Fault Damage Zones in 3D with Active-Source Seismic Data poster
Using the Cascadia Initiative to Investigate Seismicity and Possible Shallow Slow Slip Along the Southernmost Section of the Cascadia Subduction Zone. poster
Refining the Tonga Slab Geometry Using Slab Phases of Seismic Waves
2026 Earthquake Science Center Seminar Series, Co-chair & organizer USGS
2025 American Geophysical Union Annual Meeting, Co-chair Characteristics of faults and fault zones and their influence on earthquake physics: observations, models, and experiments
2024 American Geophysical Union Annual Meeting, Co-chair Characteristics of faults and fault zones and their influence on earthquake physics: observations, models, and experiments
2023 Seismological Society of America Meeting, Convener Above the Seismogenic Zone: Fault Damage and Healing the Shallow Crust
2022 Seismological Society of America Meeting, Convener Fault Damage Zones: What We Know and Do Not (1 & 2)
2026 Central San Andreas Fault Mapping
2026 Pittsburgh Kirby Hills Fault - coring
2026 San Ramon Nodal Seismic Deployment
2025 San Andreas Fault Trenching - Little Rabbit Valley
2025 Parkfield Bridge - Creeping San Andreas Fault
2024 Montezuma Hills Fault Trenching - Talbert Lane
2024 San Andreas Fault Trenching - Little Rabbit Valley
2024 Mee Ranch and Mustang Ranch
2023 Seismic Refraction Survey
2021 RV Sproul
2019 RV Bold Horizon
2018 Blue Mountain Geothermal
2017 IRIS pascal
Teaching Assistant, Geophysical Data Science (9/2021 - 12/2021)
Teaching Assistant, Environmental Geology (3/2020 - 7/2020)
Teaching assistant, Geology of National Parks (4/2019 - 7/2019)
Teaching assistant, Environmental Geology (4/2020 - 7/2020)
Student assistant, California Historical Geology (1/2016 – 7/2016)
Earthquake Physics, Crustal Deformation, Order of Magnitude Estimation, The Dynamic Earth, Practical Geophysics, Seismotectonics, Machine Learning for Geophysicists, Topics in Geophysics, Scientific Computing, Foundations in Applied Mathematics, Structural Geology, Data Analysis in Earth Science, Foundations in Earth Science.