27 publications

2022

• Evans, E. L., Minson, S. E., & Chadwell, C. D. (2022). Imaging the next Cascadia earthquake: optimal design for a seafloor GNSS-A network. Geophysical Journal International, 228(2), 944-957. doi: 10.1093/gji/ggab360

2020

• Trehu, A. M., de Moor, A., Madrid, J. M., Saez, M., Chadwell, C. D., Ortega-Culaciati, F., ... Tryon, M. D. (2020). Post-seismic response of the outer accretionary prism after the 2010 Maule earthquake, Chile. Geosphere, 16(1), 13-32. doi: 10.1130/ges02102.1

2017

• Maksymowicz, A., Chadwell, C. D., Ruiz, J., Trehu, A. M., Contreras-Reyes, E., Weinrebe, W., ... Tryon, M. D. (2017). Coseismic seafloor deformation in the trench region during the Mw8.8 Maule megathrust earthquake. Scientific Reports, 7(45918). doi: 10.1038/srep45918

2016

• DeSanto, J. B., Sandwell, D. T., & Chadwell, C. D. (2016). Seafloor geodesy from repeated sidescan sonar surveys. Journal of Geophysical Research-Solid Earth, 121(7), 4800-4813. doi: 10.1002/2016jb013025

2014

• Burgmann, R., & Chadwell, D. (2014). Seafloor geodesy. Annual Review of Earth and Planetary Sciences, Vol 42, 42, 509-534. doi: 10.1146/annurev-earth-060313-054953

2010

• Blum, J. A., Chadwell, C. D., Driscoll, N., & Zumberge, M. A. (2010). Assessing slope stability in the Santa Barbara Basin, California, using seafloor geodesy and CHIRP seismic data. Geophysical Research Letters, 37(L13308). doi: 10.1029/2010gl043293
• Prawirodirdjo, L., McCaffrey, R., Chadwell, C. D., Bock, Y., & Subarya, C. (2010). Geodetic observations of an earthquake cycle at the Sumatra subduction zone: Role of interseismic strain segmentation. Journal of Geophysical Research-Solid Earth, 115(B03414). doi: 10.1029/2008jb006139
• Chadwell, C. D., & Sweeney, A. D. (2010). Acoustic Ray-Trace Equations for Seafloor Geodesy. Marine Geodesy, 33(2-3), 164-186. doi: 10.1080/01490419.2010.492283

2008

• Phillips, K. A., Chadwell, C. D., & Hildebrand, J. A. (2008). Vertical deformation measurements on the submerged south flank of Kilauea volcano, Hawai'i reveal seafloor motion associated with volcanic collapse. Journal of Geophysical Research-Solid Earth, 113(B5). doi: 10.1029/2007jb005124
• Chadwell, C. D., & Spiess, F. N. (2008). Plate motion at the ridge-transform boundary of the south Cleft segment of the Juan de Fuca Ridge from GPS-Acoustic data. Journal of Geophysical Research-Solid Earth, 113(B04415). doi: 10.1029/2007jb004936

2007

• Gagnon, K. L., & Chadwell, C. D. (2007). Relocation of a seafloor transponder - Sustaining the GPS-Acoustic technique. Earth Planets and Space, 59(5), 327-336.

2006

• D'Spain, G. L., Terrill, E., Chadwell, C. D., Smith, J. A., & Lynch, S. D. (2006). Active control of passive acoustic fields: Passive synthetic aperture/Doppler beamforming with data from an autonomous vehicle. Journal of the Acoustical Society of America, 120(6), 3635-3654. doi: 10.1121/1.2346177
• Sweeney, A. D., Chadwell, C. D., & Hildebrand, J. A. (2006). Calibration of a seawater sound velocimeter. IEEE Journal of Oceanic Engineering, 31(2), 454-461. doi: 10.1109/joe.2004.836582
• Osada, Y., Fujimoto, H., Kanazawa, T., Nakao, S., Sakai, S., Miura, S., ... Chadwell, C. D. (2006). Development of a GPS/acoustic seafloor positioning system for 6,000 m water depth and its trial experiments at sea. Journal of the geodetic Society of Japan, 52(3), 171-182.

2005

• Gagnon, K., Chadwell, D., & Spiess, F. N. (2005). Evolving method to measure seafloor plate tectonic motions. Sea Technology, 46(7), 49-52.
• Gagnon, K., Chadwell, C. D., & Norabuena, E. (2005). Measuring the onset of locking in the Peru-Chile trench with GPS and acoustic measurements. Nature, 434(7030), 205-208. doi: 10.1038/nature03412
• Sweeney, A. D., Chadwell, C. D., Hildebrand, J. A., & Spiess, F. N. (2005). Centimeter-Level Positioning of Seafloor Acoustic Transponders from a Deeply-Towed Interrogator. Marine Geodesy, 28(1), 39-70. doi: 10.1080/01490410590884502
• Kussat, N. H., Chadwell, C. D., & Zimmerman, R. (2005). Absolute positioning of an autonomous underwater vehicle using GPS and acoustic measurements. Ieee Journal of Oceanic Engineering, 30(1), 153-164. doi: 10.1109/joe.2004.835249
• Zimmerman, R., D'Spain, G. L., & Chadwell, C. D. (2005). Decreasing the radiated acoustic and vibration noise of a mid-size AUV. Ieee Journal of Oceanic Engineering, 30(1), 179-187. doi: 10.1109/joe.2004.836996

2003

• Chadwell, C. D. (2003). Shipboard towers for Global Positioning System antennas. Ocean Engineering, 30(12), 1467-1487. doi: 10.1016/s0029-8018(02)00141-5
• Osada, Y., Fujimoto, H., Miura, S., Sweeney, A., Kanazawa, T., Nakao, S., ... Chadwell, C. D. (2003). Estimation and correction for the effect of sound velocity variation on GPS/Acoustic seafloor positioning: An experiment off Hawaii Island. Earth Planets and Space, 55(12), E17-E20.

2001

• Chadwell, C. D., & Bock, Y. (2001). Direct estimation of absolute precipitable water in oceanic regions by GPS tracking of a coastal buoy. Geophysical Research Letters, 28(19), 3701-3704. doi: 10.1029/2001gl013280

1999

• Chadwell, C. D., Hildebrand, J. A., Spiess, F. N., Morton, J. L., Normark, W. R., & Reiss, C. A. (1999). No spreading across the southern Juan de Fuca Ridge axial cleft during 1994-1996. Geophysical Research Letters, 26(16), 2525-2528. doi: 10.1029/1999gl900570
• Chadwell, C. D. (1999). Reliability analysis for design of stake networks to measure glacier surface velocity. Journal of Glaciology, 45(149), 154-164.

1998

• Spiess, F. N., Chadwell, C. D., Hildebrand, J. A., Young, L. E., Purcell, G. H., & Dragert, H. (1998). Precise GPS/Acoustic positioning of seafloor reference points for tectonic studies. Physics of the Earth and Planetary Interiors, 108(2), 101-112. doi: 10.1016/s0031-9201(98)00089-2
• Chadwell, D., Spiess, F., Hildebrand, J., Young, L., Purcell, G., & Dragert, H. (1998). Deep-sea geodesy; monitoring the ocean floor. GPS World, 9(9), 44-50, 52-55.

1997

• Chadwell, C. D., Spiess, F. N., Hildebrand, J. A., Young, L. E., Purcell, G. H., Dragert, H., ... Okubo, S. (1997). Sea floor strain measurement using GPS and acoustics. International Association of Geodesy Symposia, 117, 682-689.