Earthquake and Tsunami Early Warning

1: Crowell, B.W., Y. Bock, and M.B. Squibb (2009), Demonstration of earthquake early warning using total displacement waveforms from real-time GPS networks, Seism. Res. Lett., 80 (5), 768-778, doi: 10.1785/gssrl.80.5.772. SSA Website

2: Crowell, B.W., Y. Bock, and D. Melgar (2012), Real-time inversion of GPS data for finite fault modeling and rapid hazard assessment, Geophys. Res. Lett., 39, L09305, doi:10.1029/2012GL051318. AGU Website

3: Melgar, D., Y. Bock, and B.W. Crowell (2012), Real-time centroid moment tensor determination for large earthquakes from local and regional displacement records, Geophys. J. Int., 188, 703-718, doi: 10.1111/j.1365-246X.2011.05297.x. GJI Website

4: Crowell, B. W., D. A. Schmidt, P. Bodin, J. E. Vidale, J. Gomberg, J. R. Hartog, V. C. Kress, T. I. Melbourne, V. M. Santillan, S. E. Minson, and D. G. Jamison (2016), Demonstration of the Cascadia G-FAST geodetic earthquake early warning system for the Nisqually, Washington earthquake, Seism. Res. Lett., 87, 930-943, doi: 10.1785/0220150255. SSA Website

5: Hartog, J. R., V. C. Kress, S. D. Malone, P. Bodin, J. E. Vidale, and B. W. Crowell (2016), Earthquake early warning: ShakeAlert in the Pacific Northwest, Bull. Seism. Soc. Am., 106, 1875-1886, doi: 10.1785/0120150261. SSA Website

6: Cochran, E.S., B. T. Aagaard, R. M. Allen, J. Andrews, A. S. Baltay, A. J. Barbour, P. Bodin, B. A. Brooks, A. Chung, B. W. Crowell, D. D. Given, T. C. Hanks, J. R. Hartog, E. Hauksson, T. H. Heaton, S. McBride, M-A. Meier, D. Melgar, S. E. Minson, J. R. Murray, J. A. Strauss, and D. Toomey (2018), Research to improve ShakeAlert earthquake early warning products and their utility: U.S. Geological Survey Open-File Report 2018–1131, 17 p.,

7: Crowell, B. W., D. Melgar, and J. Geng (2018), Hypothetical real-time GNSS modeling of the 2016 Mw 7.8 Kaikoura Earthquake: Perspectives from ground motion and tsunami inundation prediction, Bull. Seism. Soc. Am., 108, 1736-1745, doi: 10.1785/0120170247. SSA Website

8: Crowell, B. W., D. A. Schmidt, P. Bodin, J. E. Vidale, B. Baker, S. Barrientos, and J. Geng (2018), G-FAST earthquake early warning potential for great earthquakes in Chile, Seism. Res. Lett., 89, 542-556, doi: 10.1785/0220170180. SSA Website

9: Murray, J. R., B. W. Crowell, R. Grapenthin, K. Hodgkinson, J. O. Langbein, T. Melbourne, D. Melgar, S. E. Minson, and D. A. Schmidt (2018), Development of a geodetic component for the U. S. West Coast earthquake early warning system, Seism. Res. Lett., 89, 2322-2336, doi: 10.1784/0220180162. SSA Website

10: Williamson, A. L., D. Melgar, B. W. Crowell, D. Arcas, T. I. Melbourne, Y. Wei, and K. Kwong (2020), Near-field tsunami forecasting along the Cascadia subduction zone using rapid GNSS source models, J. Geophys. Res.,125, e2020JB019636, doi: 10.1029/2020JB19636. 

11: Chung, A. I., M.-A. Meier, J. Andrews, M. Bose, B. Crowell, J. McGuire, and D. Smith (2020), ShakeAlert earthquake early warning system performance during the 2019 Ridgecrest earthquake sequence, Bull. Seism. Soc. Am., 110 (4), 1904-1923, doi: 10.1785/0120200032.

12: Murray, J. R., B. W. Crowell, M. H. Murray, C. Ulberg, J. J. McGuire, M. Aranha, and M. Hagerty (2023), Incorporation of real-time earthquake magnitudes estimated via peak ground displacement scaling in the ShakeAlert earthquake early warning system, Bull. Seism. Soc. Am.,

Seismogeodetic Analyses of Earthquakes

1: Melgar, D., B.W. Crowell, Y. Bock, and J.S. Haase (2013), Rapid modeling of the 2011 Mw 9.0 Tohoku-oki earthquake with seismogeodesy, Geophys. Res. Lett., 40, doi: 10.1002/grl.50590. AGU Website

2: Geng, J., Y. Bock, D. Melgar, B.W. Crowell, and J.S. Haase (2013), A new seismogeodetic approach applied to GPS and accelerometer observations of the 2012 Brawley seismic swarm: Implications for earthquake early warning, Geochem. Geophys. Geosyst., 14, doi: 10.1002/ggge.20144. AGU Website

3: Melgar, D., J. Geng, B. W. Crowell, J. S. Haase, Y. Bock, W. C. Hammond, and R. M. Allen (2015), Seismogeodesy of the 2014 Mw6.1 Napa Earthquake, California: Rapid Response and Modeling of Fast Rupture on a Dipping Strike-slip fault, J. Geophys. Res., 120, doi: 10.1002/2015JB011921. AGU Website

4: Goldberg, D. E,, D. Melgar, A. M. Thomas, V. J. Sahakian, X. Xu, B. W. Crowell, and J. Geng (2020), Complex Rupture of an Immature Fault Zone: A Simultaneous Kinematic Model of the 2019 Ridgecrest, CA Earthquakes, Geophys. Res. Lett., 47, e2019GL086382, doi: 10.1029/2019GL086382. Link

5: Melgar, D., A. Ganas, T. Taymaz, S. Valkaniotis, B. W. Crowell, V. Kapetanidis, V. Tsiron, S. Yolsal-Cevikbilen, and T. Ocalan (2020), Rupture kinematics of January 24, 2020 Mw 6.7 Doganyol-Sivrice, Turkey earthquake on the East Anatolian fault zone imaged by space geodesy, Geophys. J. Int., 223 (2), 862-874, doi: 10.1093/gji/ggaa345.

6: Crowell, B. W., and D. Melgar (2020), Slipping the Shumagin Gap: A Kinematic Coseismic and Early Afterslip Model of the Mw 7.8 Simeonof Island, Alaska, Earthquake, Geophys. Res. Lett., 47, e2020090308, doi: 10.1029/2020GL090308.

7: Melgar, D., A. Ruiz-Angulo, X. Perez-Campos, B. W. Crowell, X. Xu, E. Cabral-Cano, M. R. Brudzinski, and L. Rodriguez-Abreu (2021), Energetic rupture and tsunamigenesis during the 2020 Mw 7.4 La Crucecita, Mexico earthquake, Seism. Res. Lett., doi: 10.1785/0220200272.

8: Melgar, D., A. Ruiz-Angulo, B. W. Crowell, E. J. Fielding, and E. A. Solano-Hernandez (2022), The mechanisms of tsunami amplification and the earthquake source of the 2021 M7 Acapulco, Mexico, earthquake, Bull. Seism. Soc. Am., doi:10.1785/0120220098.

9: Melgar, D., Taymaz, T., Ganas, A., Crowell, B., Öcalan, T., Kahraman, M., Tsironi, V., Yolsal-Çevikbilen, S., Valkaniotis, S., Irmak, T. S., Eken, T., Erman, C., Özkan, B., Dogan, A. H., & Altuntaş, C. (2023). Sub- and super-shear ruptures during the 2023 Mw 7.8 and Mw 7.6 earthquake doublet in SE Türkiye. Seismica, 2(3).

GNSS Velocities

1: Crowell, B. W. (2021), Near-field strong ground motions from GPS-derived velocities for Intermountain Western United States Earthquakes in 2020, Seism. Res. Lett., doi: 10.1785/0220200325. Link

2: Crowell, B. W., J. V. DeGrande, T. Dittmann, and J. N. Ghent (2023), Validation of peak ground velocities recorded on very-high-rate GNSS against NGA-West2 ground motion models, Seismica, 2(1).

Seismogeodetic Datasets

1: Ruhl, C. J., D. Melgar, J. Geng, D. E. Goldberg, B. W. Crowell, R. M. Allen, Y. Bock, S. Barrientos, S. Riquelme, J. C. Baez, E. Cabral-Cano, X. Perez-Campos, E. M. Hill, M. Protti, A. Ganas, M. Ruiz, P. Mothes, P. Jarrin, J.-M. Nocquet, J.-P. Avouac, and E. D'Anastassio (2018), A global database of strong motion displacement GNSS recordings and an example application to PGD scaling, Seism. Res. Lett., 90, 271-279, doi: 10.1785/0220180177. SSA Website

2: Melgar, D., T. I. Melbourne, B. W. Crowell, J. Geng, W. Szeliga, C. Scrivner, M. Santillan, and D. E. Goldberg (2019), Real-time high-rate GNSS displacements: Performance demonstration during the 2019 Ridgecrest, CA earthquakes, Seism. Res. Lett., doi: 10.1785/0220190223. SSA Website

3: Melgar, D., B. W. Crowell, T. I. Melbourne, W. Szeliga, M. Santillan, and C. Scrivner (2020), Noise characteristics of real-time high-rate GNSS positions in a large aperture network, J. Geophys. Res., 125, e2019JB019197, doi: 0.1029/2019JB019197.

Transient Detection

1: Crowell, B. W., Y. Bock, and Z. Liu (2016), Single station automated detection of transient deformation in GPS time series with the relative strength index: A case study of Cascadian slow-slip, J. Geophys. Res., 121, 9077-9094, doi: 10.1002/2016JB013542. AGU Website

Peak Ground Displacement/Strain Scaling

1: Crowell, B.W., D. Melgar, Y. Bock, J.S. Haase, and J. Geng (2013), Earthquake magnitude scaling using seismogeodetic data, Geophys. Res. Lett., 40, 6089-6094, doi: 10.1002/2013GL058391. AGU Website

2: Melgar, D., B. W. Crowell, J. Geng, R. M. Allen, Y. Bock, S. Riquelme, E. M. Hill, M. Protti, and A. Ganas (2015), Earthquake magnitude calculation without saturation from the scaling of peak ground displacement, Geophys. Res. Lett., 42, 5197-5205, doi: 10.1002/2015GL064278. AGU Website

3: Barbour, A. J., and B. W. Crowell (2017), Dynamic strains from earthquakes at local and regional distances, Seism. Res. Lett., 88, 354-370, doi: 10.1785/0220160155. SSA Website

4: Goldberg, D. E., D. Melgar, G. P. Hayes, B. W. Crowell, and V. J. Sahakian (2021), A ground motion model for GNSS peak ground displacement, Bull. Seism. Soc. Am., doi: 10.1785/0120210042. SSA Website

Tectonic Geodesy

1: Crowell, B.W., Y. Bock, D.T. Sandwell, and Y. Fialko (2013), Geodetic investigation into the deformation of the Salton Trough, J. Geophys. Res., 118, doi: 10.1002/jgrb.50347. AGU Website

Pure Seismogeodesy

1: Bock, Y., D. Melgar, and B.W. Crowell (2011), Real-time strong-motion broadband displacements from collocated GPS and accelerometers, Bull. Seism. Soc. Am., 101(5), doi: 10.1785/0120110007. SSA Website

2: Melgar, D., Y. Bock, D. Sanchez, and B.W. Crowell (2013), On robust and reliable automated baseline corrections for strong motion seismology, J. Geophys. Res., 118, doi: 10.1002/jgrb.50135. AGU Website

Broader Impacts

1: Gomberg, J., P. Bodin, J. Bourgeois, S. Cashman, D.S. Cowan, K. Creager, B. Crowell, A. Duvall, A.D. Frankel, F. Gonzalez, H. Houston, H.P. Johnson, H. Kelsey, U. Miller, E. Roland, D. Schmidt, L. Staisch, J. Vidale, W. Wilcock, and E. Wirth (2016), Planning for a Subduction Zone Observatory, Eos, 97, doi: 10.1029/2016EO052635. AGU Website

2: Melbourne, T. I., D. Melgar, B. W. Crowell, and W. M. Szeliga (2019), Seismic sensors in orbit, Eos, 90, doi: 10.1029/2019EO138001. Link

Glacier Dynamics

1: Olinger, S. D., B. P. Lipovsky, M. A. Denolle, and B. W. Crowell (2022), Tracking the cracking: A holistic analysis of rapid ice shelf fracture using seismology, geodesy, and satellite imagery on the Pine Island Glacier ice shelf, West Antarctica, Geophys. Res. Lett., 49, e2021GL097604, doi: 10.1029/2021GL097604. Link

Ionospheric Signals

1: Ghent, J. N., and B. W. Crowell, Spectral characteristics of ionospheric disturbances over the Southwestern Pacific from the January 15, 2022 Tonga eruption and tsunami, Geophysical Research Letters, 49, e2022GL100145, doi: 10.1029/2022GL100145