http://www.earth.sinica.edu.tw/~bfchao/Chaof.jpgBenjamin Fong Chao (趙丰) Distinguished Research Fellow

 

e-mail: bfchao@earth.sinica.edu.tw

Postal address: 128, Sec. 2, Academia Road, Nangang, Taipei 115, Taiwan, ROC

Tel: +886-2-27839910 (ext.517); Fax: +886-2-27883493

 

 

 

 

 

 

 

 

Current Position

Distinguished Research Fellow, Institute of Earth Sciences, Academia Sinica, Taiwan

Adjunct Professor, Physics Department, National Taiwan University, Taiwan

Adjunct Professor, Department of Earth Sciences, National Central University, Taiwan

Adjunct Professor, Department of Geosciences, National Cheng-Kung University, Taiwan

Geophysicist Emeritus, NASA Goddard Space Flight Center, Maryland, USA

 

Major Fields of Interest

(1) Global geophysics and planetary physics by way of (space) geodesy – Rotation dynamics; Gravitational variations; Free oscillations; Global sea level; Geophysical fluids changes.

(2) Digital data analysis methodology and numerical techniques; Inverse theory.

 

Education

1973        B.S. Physics, National Taiwan University.

1981        Ph.D. Earth Sciences, Scripps Institution of Oceanography, University of California, San Diego (thesis adviser: Prof. Freeman Gilbert).

 

Academic Experience

1975 ~ 1981    Research Assistant, Scripps Institution of Oceanography, University of California, San Diego.

1981 ~ 1983   NRC Research Associate, Geodynamics Branch, NASA/GSFC.

1983 ~ 1996   Geophysicist, Geodynamics Branch, NASA/GSFC.

                        1993 ~ 1995, NASA Geophysics Program Manager, on detail NASA Headquarters.

                        1993 (Spring), Visiting Scholar, Japan National Astronomical Observatory, Mizusawa, Japan.

1997 ~ 2004   Head, Space Geodesy Branch, NASA/GSFC.

2005 ~ 2006   Chief, Space Geodesy Laboratory, NASA Goddard Space Flight Center (GSFC), Maryland, USA.

                        2005 (summer), Visiting Scholar, National Central University, Taiwan.

2006 ~ 2010   Dean, College of Earth Sciences, National Central University, Taiwan.

2010 ~ 2013    Director, Institute of Earth Sciences, Academia Sinica, Taiwan.

2010 ~present Distinguished Fellow, Institute of Earth Sciences, Academia Sinica, Taiwan.

                2015 (Spring), Visiting Scholar, Kyoto University, Kyoto, Japan.

2016 (Spring), Visiting Scholar, University of Science and Technology of China, Hefei, China.

                2017 (Spring), Visiting Scholar, Kyoto University, Kyoto, Japan.

                2017 (Fall), Visiting Scholar, Alicante University, Alicante, Spain.

 

Honors and Awards

1990             Excellence in Refereeing: J. Geophys. Res., Amer. Geophys. Union.

1991, 1992, 1994, 1995, 1996, 1998, 2000, 2003, 2004 (9 times) NASA GSFC Outstanding Performance Awards.

1995             Fellow, International Association of Geodesy.

2005             Honorary Professorship, University of the Chinese Academy of Sciences, Beijing.

2005             The Einstein Professorship, Chinese Academy of Sciences.

2006 ~         Adjunct Researcher, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan.

2006 ~ 2008 TSMC Outstanding Chair Professorship.

2009 ~ 2010 Foundation for the Advancement of Outstanding Scholarship Award.

2010 ~         Distinguished Research Fellow, Academia Sinica.

 

Professional Societies and Services

Member, American Geophysical Union, since 1976.

Member, International Astronomical Union, since 2006.

Chairman, IUGG/IAG Special Study Group "Global Geodynamic Variations", 1991-1994.

Member of numerous IUGG/IAG Special Study Groups.

Direction and Review Committee, Journal of Geophysical Research - Solid Earth, 1998-1999.

International Earth Rotation Service (IERS) Directing Board member, 1998 - 2004.

Head (founding), IERS Global Geophysical Fluids Center (GGFC), 1998 – 2004.

Chair, IERS/GGFC Special Bureau for Mantle, 1998 - 2006.

Mission Scientist, NASA GRACE Mission, 2000 - 2002.

NASA Solid Earth Science Working Group, 2000 - 2002.

Workgroup lead of NASA's Earth Science Enterprise Visions2025, 2001 - 2003.

Directing Board, Sub-Commission Geophysical Fluids, Commission 3, IAG, 2003 - 2007.

Review Board Member, for the University of California System-wide Institute of Geophysics and Planetary Physics, 2004.

President-elect, Geodesy Section, American Geophysical Union (AGU), 2002 - 2004.

President, Geodesy Section, American Geophysical Union (AGU), 2004 - 2006.

International Award Committee, American Geophysical Union (AGU), 2006 - 2008.            

Director (founding), GPS Scientific Applications and Research Center, Taiwan, 2006 - 2008.

President, Chinese Geoscience Union (CGU),中華民國地球科學學會 理事長, 2008- 2011.

Organizing Committee, IAU Commission 19, “Earth Rotation”, since 2009.

J. Geodynamics, Editorial Board member, 1996 - present.

Earth, Planets and Space, International Editorial Board member, 1997 - present.

Journal of Geophysical Research -- Solid Earth, Associate Editor, 1998 – 2006; 2009 - present.

Chair, The Nomenclature Committee for Earth Sciences, commissioned by the Taiwan Ministry of Education, 2013 - present.

Vice President, Asia-Oceania Geosciences Society (AOGS), 2015 - 2016, 2018 - 2019.

President, Asia-Oceania Geosciences Society (AOGS), 2016 - 2018.

 

 

Publications (157 publications as of 2017, of which 71 are first/sole authored, 20 second/corresponding authored with students, 4 in Science, 2 in Nature):

 

Chao, B. F., and F. Gilbert, Autoregressive estimation of complex eigenfrequencies in low frequency seismic spectra, Geophys. J. Roy. Astron. Soc., 63, 641‑657, 1980.

Chao, B. F., Symmetry and terrestrial spectroscopy, Geophys. J. Roy. Astron. Soc., 66, 285‑312, 1981.

Chao, B. F., Excitation of normal modes on non‑rotating and rotating earth models, Geophys. J. Roy. Astron. Soc., 68, 295‑315, 1982.

Chao, B. F., Autoregressive harmonic analysis of the Earth's polar motion using homogeneous ILS data, J. Geophys. Res., 88, 10299‑10307, 1983.

Chao, B. F., Normal mode study of the Earth's rigid-body motions, J. Geophys. Res., 88, 9437‑9442, 1983.

Chao, B. F., Interannual length-of-day variation with relation to the Southern Oscillation / El Nińo, Geophys. Res. Lett., 11, 541‑544, 1984.

Chao, B. F., On the excitation of the Earth's free wobble and reference frames, Geophys. J. Roy. Astron. Soc., 79, 555‑563, 1984.

Chao, B. F., Predictability of the Earth's polar motion, Bull. Geod., 59, 81‑93, 1985.

Chao, B. F., On the excitation of the Earth's polar motion, Geophys. Res. Lett., 12, 526‑529, 1985.

Chao, B. F., As the world turns, EOS, Trans. Amer. Geophys. Union, 46, 766‑770, 1985.

Gross, R. S., and B. F. Chao, Excitation study of the LAGEOS‑derived Chandler wobble, J. Geophys. Res., 90, 9369‑9380, 1985.

Chao, B. F., On the excitation of the Earth's polar motion -- Reply, Geophys. Res. Lett., 14, 247, 1987.

Chao, B. F., W. P. O'Connor, A. T. C. Chang, D. K. Hall, and J. L. Foster, Snow‑load effect on the Earth's rotation and gravitational field, 1979-1985, J. Geophys. Res., 92, 9415‑9422, 1987.

Chao, B. F. and Gross, R. S., Changes in the Earth's rotation and low‑degree gravitational field induced by earthquakes, Geophys. J. Roy. Astron. Soc., 91, 569‑596, 1987.

Runcorn, S. K., G. A. Wilkins, E. Groten, H. Lenhardt, J. Campbell, R. Hide, B. F. Chao, A. Souriau, J. Hinderer, H. Legros, J. L. Le Mouel, and M. Feissel, The excitation of the Chandler wobble, Survey in Geophysics, 9, 419‑449, 1988.

Chao, B. F., and W. P. O'Connor, Effect of a uniform sea level change on the Earth's rotation and gravitational field, Geophys. J., 93, 191‑193, 1988.

Chao, B. F., and W. P. O'Connor, Global surface water‑induced seasonal variations in the Earth's rotation and gravitational field, Geophys. J., 94, 263‑270, 1988.

Chao, B. F., Correlation of interannual length-of-day variation with El Nińo / Southern Oscillation, 1972‑1986, J. Geophys. Res., 93, 7709‑7715, 1988.

Chao, B. F., Excitation of the Earth's polar motion due to mass variations in major hydrological reservoirs, J. Geophys. Res., 93, 13811‑13819, 1988.

Rubincam, D. P., B. F. Chao, K. H. Schatten, and W. W. Sager, Non-Newtonian gravity or gravity anomalies? EOS, Trans. Amer. Geophys. Union, 69, 1636, 1988.

Chao, B. F., Feynman's dining hall dynamics, Phys. Today, 42, #2, 15, 1989.

Chao, B. F., Length‑of‑day variations caused by El Nińo-Southern Oscillation and Quasi-Biennial Oscillation, Science, 243, 923‑925, 1989.

Rubincam, D. P., B. F. Chao, and K. H. Schatten, Application of internal gravitational field equations to geophysical measurement of G, J. Geophys. Res., 94, 7563‑7566, 1989.

Chao, B. F., and D. P. Rubincam, The gravitational field of Phobos, Geophys. Res. Lett., 16, 859‑862, 1989.

Chao, B. F., Comment on "Moment of inertia of three‑dimensional models of the Earth" by T. Tanimoto, Geophys. Res. Lett., 16, 1075, 1989.

Chao, B. F., and D. P. Rubincam, Variations of Mars' gravitational field and rotation due to seasonal CO2 exchange, J. Geophys. Res., 95, 14755-14760, 1990.

Chao, B. F., Comment on "A new method of spectral analysis and its application to the Earth's free oscillation: the "Sompi" method" by Hori et al., J. Geophys. Res., 95, 19789-19790, 1990.

Gross, R. S., and B. F. Chao, The global geodynamics effect of the Macquarie Ridge earthquake, Geophys. Res. Lett., 17, 1009-1012, 1990.

Chao, B. F., On the use of maximum-entropy autoregressive spectrum in harmonic analysis of time series, Pure and Applied Geophys., 134, 303-311, 1990.

Chao, B. F., and A. Y. Au, Temporal variation of the Earth's zonal gravitational field caused by atmospheric mass redistribution: 1980-1988, J. Geophys. Res., 96, 6569!6575, 1991.

Chao, B. F., and A. Y. Au, Atmospheric excitation of the Earth's annual wobble: 1980-1988, J. Geophys. Res., 96, 6577-6582, 1991.

Liu, H. S., and B. F. Chao, The Earth's equatorial principal axes and moments of inertia, Geophys. J. Int., 106, 699-702, 1991.

Chao, B. F., Man, water, and sea level, EOS, Trans. Amer. Geophys. Union, 72, 492, 1991.

Chao, B. F., As the world turns, II, EOS, Trans. Amer. Geophys. Union, 72, 550-551, 1991.

Chao, B. F., D. N. Dong, H. S. Liu, and T. A. Herring, Libration in the Earth's rotation, Geophys. Res. Lett., 18, 2007-2010, 1991.

Chao, B. F., Excitation of Earth's polar motion by atmospheric angular momentum variations, 1980-1990, Geophys. Res. Lett., 20, 253-256, 1993.

Nerem, R. S., B. F. Chao, A. Y. Au, J. C. Chan, S. M. Klosko, N. K. Pavlis, and R. G. Williamson, Temporal variations of the Earth's gravitational field from satellite laser ranging to LAGEOS, Geophys. Res. Lett., 20, 595-598, 1993.

Chao, B. F., Are autoregressive models sensitive to initial conditions? EOS, Trans. Amer. Geophys. Union, 74, 132-134, 1993.

Chao, B. F., The Geoid and Earth Rotation, in Geophysical Interpretations of Geoid, ed. P. Vanicek and N. Christou, CRC Press, Boca Raton, 1994.

Ray, R. D., D. J. Steinberg, B. F. Chao, and D. E. Cartwright, Diurnal and semidiurnal variations in the Earth's rotation rate induced by oceanic tides, Science, 264, 830-832, 1994.

Chao, B. F., Man-made lakes and global sea level, Nature, 370, 258, 1994.

Rubincam, D. P., B. F. Chao, and P. C. Thomas, The gravitational field of Deimos, Icarus, 114, 63-67, 1995.

Chao, B. F., and I. Naito, Wavelet analysis provides a new tool for studying Earth's rotation, EOS, Trans. Amer. Geophys. Union, 76, 161-165, 1995.

Chao, B. F., R. D. Ray, and G. D. Egbert, Diurnal/semidiurnal oceanic tidal angular momentum: Topex/Poseidon models in comparison with Earth's rotation rate, Geophys. Res. Lett., 22, 1993-1996, 1995.

Chao, B. F., and R. J. Eanes, Global gravitational change due to atmospheric mass redistribution as observed by the Lageos' nodal residual, Geophys. J. Int. 122, 755-764, 1995.

Chao, B. F., J. B. Merriam, and Y. Tamura, Geophysical analysis of zonal tidal signals in length of day, Geophys. J. Int., 122, 765-775, 1995.

Chao, B. F., and R. S. Gross, Changes of the Earth's rotational energy induced by earthquakes, Geophys. J. Int., 122, 776-783, 1995.

Chao, B. F., R. S. Gross, and D. N. Dong, Global gravitational energy changes induced by earthquakes, Geophys. J. Int., 122, 784-789, 1995.

Chao, B. F., Anthropogenic impact on global geodynamics due to reservoirs water impoundment, Geophys. Res. Lett., 22, 3529-3532, 1995.

Han, Y. B., Q. B. Li, and B. F. Chao, Records of ancient solar and lunar eclipses and study of variation of the Earth’s rotation, Dev. Geophys., 10 (in Chinese), 43-50, 1995.

Chao, B. F., R. S. Gross, and Y. B. Han, Seismic excitation of the polar motion, 1977-1993, Pure and Applied Geophysics, 146, 407-419, 1996.

Chao, B. F., Y. B. Han, and R. S. Gross, On seismic excitation of the polar motion, Chinese Science Bulletin, 41, 832-836, 1996.

Zhu, Y., C. K. Shum, M. K. Cheng, B. D. Tapley, and B. F. Chao, Long-period variations in gravity field caused by mantle anelasticity, J. Geophys. Res., 101, 11243-11248, 1996.

Ray, R. D., R. J. Eanes, and B. F. Chao, Detection of tidal dissipation in the solid Earth by satellite tracking and altimetry, Nature 381, 595-597, 1996.

Chao, B. F., R. D. Ray, J. M. Gipson, G. D. Egbert, and C. Ma, Diurnal/semidiurnal polar motion excited by oceanic tidal angular momentum, J. Geophys. Res., 101, 20,151-20,163, 1996.

Chao, B. F., A concrete terrestrial testimony of Milankovitch cycle in Earth’s changing obliquity, EOS, Trans. Amer. Geophys. Union, 77, 433, 1996. Also in Earth in Space, AGU, Dec, 1996.

Furuya, M., and B. F. Chao, Estimation of period and Q of the Chandler wobble, Geophys. J. Int. 127, 693-702, 1996.

Zhou, Y. H., D. W. Zheng, and B. F. Chao, Polar motion and the North Atlantic Oscillation, Chinese Science Bull., 42, 927-931, 1997.

Ray, R. D., B. F. Chao, Z. Kowalik, and A. Proshutinsky, Angular momentum of Arctic Ocean tides, J. Geodesy, 71, 344-350, 1997.

Chao, B. F., Earth rotation, Encyclopedia of Planetary Sciences, Chapman and Hall, New York, pp. 990, 1997.

Dehant, V., C. R. Wilson, D. A. Salstein, B. F. Chao, R. S. Gross, Ch. Le Provost, and R. M. Ponte, Study of Earth's rotation and geophysical fluids progresses, EOS, Trans. Amer. Geophys. Union, 78, 357-360, 1997.

Gross, R. S., B. F. Chao, and S. D. Desai, Effect of long-period ocean tides on the Earth's polar motion, Prog. in Oceanog., 40, 385-397, 1997.

Lemoine, F. G., N. K. Pavlis, S. C. Kenyon, R. H. Rapp, E. C. Pavlis, and B. F. Chao, New high-resolution model developed for Earth's gravitational field, EOS, Trans. Amer. Geophys. Union 79, 113-118, 1998.

Liu, H. S., and B. F. Chao, Wavelet spectral analysis of the Earth's orbital variations and paleoclimatic cycles, J. Atmos. Soc., 55, 227-236, 1998.

Rubincam, D. P., B. Bills, and B. F. Chao, The incredible shrinking tropics, Sky and Telescope, 95, #6, 36-38, 1998.

Chao, B. F., and R. D. Ray, Oceanic tidal angular momentum and Earth's rotation variations, Prog. in Oceanog., 40, 399-421, 1998.

Clark, T. A., C. Ma, J. W. Ryan, B. F. Chao, J. M. Gipson, D. S. MacMillan, N. R. Vandenberg, T. M. Eubanks, A. E. Niell, Earth rotation measurement yields valuable information about the dynamics of the Earth system, EOS, Trans. Amer. Geophys. Union, 79, 205-209, 1998.

Klosko, S. M., and B. F. Chao, The use of satellite laser ranging and long duration orbital changes to constrain geophysical models, in Dynamics of the Ice Age Earth: A Modern Perspective, ed. P. Wu, Trans Tech Pub., 533-556, 1998.

Zhou, Y., D. Zheng, M. Zhao, and B. F. Chao, Interannual polar motion with relation to the North Atlantic Oscillation, Global and Planetary Change, 18, 79-84, 1998.

Klosko, S. M., and B. F. Chao, Secular variations of the zonal gravity field, global sea level, and polar motion as geophysical constraints, Physics and Chemistry of the Earth, 23, 1091-1102, 1998.

Ray, D. R., B. G. Bills, and B. F. Chao, Lunar and solar torques on the oceanic tides, J. Geophys. Res., 104, 17,653-17,659, 1999.

Chao, B. F., and Y. H. Zhou, Meteorological excitation of interannual polar motion by the North Atlantic Oscillation, J. Geodynamics, 27, 61-73, 1999.

Kuo, Y. H., B. F. Chao, and L. C. Lee, A Constellation of microsatellites promises to help in a range of geoscience research, EOS, Trans. Amer. Geophys. Union, 80, 467-471, 1999.

Johnson, T. J., C. R. Wilson, B. F. Chao, Oceanic angular momentum variability estimated from the Parallel Ocean Climate Model, 1988-1998, J. Geophys. Res. 104, 25183-25195, 1999.

Zheng, D. W., B. F. Chao, Y. Zhou, and N. Yu, Improvement of edge effect of the wavelet time-frequency spectrum: Application to the length of day series, J. Geod., 74, 249-254, 2000.

Chao, B. F., E. C. Pavlis, C. W. Huang, C. C. Liu, C. K. Shum C. L. Tseng, and M. Yang, COSMIC: Geodetic applications in improving Earth's gravity model, Terr. Atmos. and Ocean. Sc., 11, 365-378, 2000.

Chao, B.F., Renaming D Double Prime, EOS, Trans. Amer. Geophys. Union, 81, 46, 2000.

Chao, B.F., Reply to “That ‘Dahm’ Layer”, EOS, Trans. Amer. Geophys. Union, 81, 210, 2000.

Chao, B.F., V. Dehant, R.S. Gross, R.D. Ray, D.A. Salstein, M. M. Watkins, and C. R. Wilson, Space geodesy monitors mass transports in global geophysical fluids, EOS, Trans. Amer. Geophys. Union, 81, 247-250, 2000.

Chen, J. L., C. R. Wilson, B. F. Chao, C. K. Shum and B. D. Tapley: Hydrological and oceanic excitations to polar motion and length-of-day variation, Geophys. J. Int., 141, 149-156, 2000.

Chao, B. F., and R. S. Gross, Coseismic excitation of the Earth’s polar motion, in Polar Motion: Historical and Scientific Problems, IAU Coll. 178, ed. S. Dick, D. McCarthy, and B. Luzum, Astron. Soc. Pacific, San Francisco, 2000.

O’Connor, W., B. F. Chao, D. W. Zheng, and A. Y. Au, Wind stress forcing of the North Sea “pole tide”, Geophys. J. Int., 142, 620-630, 2000.

Chao, B. F., W. O’Connor, D. Zheng, and A. Y. Au, Wind stress forcing of the North Sea “pole tide” -- Reply, Geophys. J. Int., 146, 266, 2001.

Kuang, W., and B. F. Chao, Topographic core-mantle coupling in geodynamo modeling, Geophys. Res. Lett., 28, 1871-1874, 2001.

Johnson, T. J., C. R. Wilson, B. F. Chao, Non-tidal oceanic contributions to gravitational field changes: Predictions of the Parallel Ocean Climate Model, J. Geophys. Res., 106, 11,315-11,334, 2001.

Altamimi, Z., D. Angermann, D. Argus, G. Blewitt, C. Boucher, B. Chao, H. Drewes, R. Eanes, M. Feissel, R. Ferland, T. Herring, B. Holt, J. Johannson, K. Larson, C. Ma, J. Manning, C. Meertens, A. Nothnagel, E. Pavlis, G. Petit, J. Ray, J. Ries, H. Scherneck, P. Sillard, and M. Watkins, The Terrestrial Reference Frame and the dynamic Earth, EOS, Trans. Amer. Geophys. Union, 82, 273, 278-279, 2001.

Cox, C. M., and B. F. Chao, Detection of a large-scale mass redistribution in the terrestrial system since 1998, Science, 297, 831-833, 2002.

Fujita, M., B. F. Chao, B. V. Sanchez, and T. J. Johnson, Oceanic torques on solid Earth and their effects on Earth rotation, J. Geophys. Res., 107(B8), 10.1029/2001JB000339, 2002.

Boy, J-P., and B. F. Chao, Time-variable gravity signal during the water impoundment of China's Three-Gorges Reservoir, Geophys. Res. Lett, 29(24), 2200, doi:10.1029/2002GL016457, 2002.

Kuang, W., B. F. Chao, Geodynamo modeling and core-mantle interactions, in Earth’s Core: Dynamics, Structure, Rotation, Geodynamics Series 31, ed. V. Dehant, K. Creager, S. Karato, and S. Zatman, Amer. Geophys. Union, Washington DC, 193-212, 2003.

Chao, B. F., Geodesy is not just for static measurements any more, EOS, Trans. Amer. Geophys. Union, 84, 145-156, 2003.

Chao, B. F., A. Y. Au, J-P Boy, and C. Cox, Time-variable gravity signal of an anomalous redistribution of water mass in extratropic Pacific during 1998-2002, G-Cubed Geochemistry Geophysics Geosystems, 4, 1096, doi:10.1029/2003GC00589, 2003.

Solomon, S., et al., Plan for living on a restless planet sets NASA’s solid Earth Agenda, EOS, Trans. Amer. Geophys. Union, 84, 485-491, 2003.

Donnellan, A., J. Rundle, J. Ries, G. Fox, M. Pierce, J. Parker, R. Crippen, E. DeJong, B. Chao, W. Kuang, D. McLeod, M. Matu’ura, J. Bloxham, Illuminating Earth’s interior through advanced computing, Computing in Sc. and Eng., 6, No. 1, 36-44, 2004.

Chao, B. F., and R. S. Gross, Did the 26 December 2004 Sumatra, Indonesia, earthquake disrupt the Earth’s rotation as the mass media have said? EOS, Trans. Amer. Geophys. Union, 86, 1-2, 2005.

Plag, H. P., B. F. Chao, R. S. Gross, and T. van Dam, Forcing of polar motion in the Chandler frequency band: An opportunity to evaluate interannual climate variations, EOS, Trans. Amer. Geophys. Union, 86, 26, 2005.

Chao, B. F., and D. A. Salstein, Mass, Momentum, and Geodynamics, in Intraseasonal Variability of the Atmosphere-Ocean Climate System, eds. W. K. M. Lau and D. E. Waliser, Praxis Publishing, 2005 (2nd ed., 2011).

Chao, B. F., On inversion for mass distribution from global (time-variable) gravity field, J. Geodynamics, 39, 223-230, doi:10.1016/j.jog.2004.11.001, 2005.

Rodell, M., B. F. Chao, A. Au, L. S. Kimball, and K. C. McDonald, Global biomass variation and its geodynamic effects, 1982-1998, Earth Interactions, 9, 1-19, 2005.

Boy, J-P., and B. F. Chao, Precise evaluation of atmospheric loading effects on Earth’s time-variable gravity field, J. Geophys. Res., 110(B), 10.1029/2002JB002333, 2005.

Vigo, I. M., D. Garcia, and B. F. Chao, Change of sea level trend in the Mediterranean and Black Seas, J. Marine Res., 63, 1085-1100, 2005.

Garcia, D., B. F. Chao, J. Del Río, I. Vigo, and J. García-Lafuente, On the steric and mass-induced contributions to the annual sea level variations in the Mediterranean Sea, J. Geophys. Res., 111, C09030, doi:10.1029/2005JC002956, 2006.

Gross, R. S., and B. F. Chao, The rotational and gravitational signature of the December 26, 2004 Sumatran earthquake, Surveys in Geophys., doi: 10.1007/s10712-006-9008-1, 2006.

Chao, B. F., Earth’s oblateness and its temporal variations, Comptes rendus Geoscience, doi:10.1016/j.crte.2006.09.014, 2006.

Garcia, D., I. M. Vigo, B. F. Chao, and M. C. Martinez, Vertical crustal motion along the Mediterranean and Black Sea Coast derived from ocean altimetry and tide gauge data, Pure and Appl. Geophys., 164, doi: 10.1007/s00024-007-0193-8, 2007.

Jiang, W., W. Kuang, B. F. Chao, M. Fang, C. Cox, Understanding time-variable gravity due to core dynamical processes with numerical geodynamo modeling, in Dynamic Planet: Monitoring and Understanding a Dynamic Planet With Geodetic and Oceanographic Tools, IAG 130, eds. P. Tregoning and C. Rizos, Springer, 473-479, 2007.

Yeh, T. K., C. S. Wang, C. S. Chen, and B. F. Chao, Automatic data-quality monitoring for continuous GPS tracking stations in Taiwan, Metrologia, 44, 393-401, 2007.

García, D., B. F. Chao, J. Del Río, I. Vigo, and J. García-Lafuente, On the steric and mass-induced contributions to the annual sea level variations in the Mediterranean Sea -- Reply, J. Geophys. Res., 112, C12019, doi:10.1029/2007JC004465, 2007.

Chao, B. F., Y. H. Wu, and Y. S. Li, Impact of artificial reservoir water impoundment on global sea level, Science, doi: 10.1126/science.1154580, 2008.

Hwang, C. W., T. J. Lin, T. P. Tseng, and B. F. Chao, Modeling orbit dynamics of FORMOSAT-3/COSMIC Satellites for recovery of temporal gravity variations, IEEE Trans. Geosciences and Remote Sensing, 46, 3412-3423, 2008.

Zhang, Z., B. F. Chao, Y. Lu, and H. Hsu, An effective filtering for GRACE time-variable gravity: Fan filter, Geophys. Res. Lett., 36, L17311, doi:10.1029/2009GL039459, 2009.

Garcia, D., B. F. Chao, and J.-P. Boy, Steric and mass-induced sea level variations in the Mediterranean Sea, Revisited, J. Geophys. Res., doi:10.1029/2009JC005928, 2010.

Chao, B. F., and H. M. Yan, Relation between length-of-day variation and angular momentum of geophysical fluids, J. Geophys. Res., doi: 10.1029/2009JB007024, 2010.

Gross, R. S., and B. F. Chao, A unified approach to modeling the effects of earthquakes on the three pillars of geodesy, in Gravity, Geoid and Earth Observation, edited by S. Mertikas, pp. 643–649, IAG Symposia vol. 135, Springer-Verlag, New York, 2010.

Ogawa, R., B. F. Chao, K. Heki, Acceleration signal in GRACE time-variable gravity in relation to interannual hydrological changes, Geophys. J. Int., 184, 673–679 doi: 10.1111/j.1365-246X.2010.04843.x, 2011.

Vigo, I. M., J. M. Sanchez-Reales, M. Trottini, and B. F. Chao, Mediterranean sea level variations: Analysis of the satellite altimetric data, 1992-2008, J. Geodynamics, 52, 271-278, doi:10.1016/j.jog.2011.02.002, 2011.

Hwang, C. W., T. J. Lin, T. P. Tseng, D. Svehla, and B. F. Chao, Quality assessment of FORMOSAT-3/COSMIC and GRACE GPS observables: Analysis of multipath, ionospheric delay and phase residual in orbit determination, GPS Solutions, 14, 121-131, doi: 10.1007/s10291-009-0145-0, 2011.

Yeh, T. K., C. W. Hwang, J. F. Huang, B. F. Chao, and M.H. Chang, Vertical displacement due to ocean tidal loading around Taiwan based on GPS observations, TAO, 22, 373-382, doi: 10.3319/TAO.2011.01.27.01(T), 2011.

Chao, B. F., Y. H. Wu, Z. Z. Zhang, and R. Ogawa, Gravity variation in Siberia: GRACE observation and possible causes, TAO, 22, 149-155, doi: 10.3319/TAO.2010.07.26.03(TibXS), 2011.

Chang, E. T., and B. F. Chao, Co-seismic surface deformation of the 2011 off the Pacific coast of Tohoku earthquake: Spatio-temporal EOF analysis of GPS data, Earth, Planets and Space, 63, 649-654, 2011.

Chang, E. T., B. F. Chao, C.C. Chiang, and C.W. Hwang, Vertical crustal motion of active plate convergence in Taiwan derived from tide gauge, altimetry and GPS Data, Tectonophysics, 578, 98-106, 10.1016/j.tecto.2011.10.002, 2012.

Chao, B. F., and W. Y. Chung, Amplitude and phase variations of Earth’s Chandler Wobble under continual excitation, J. Geodynamics, 62, 35-39, 10.1016/j.jog.2011.11.009, 2012.

Lin, T. J., C. W. Hwang, T. P. Tseng, and B. F. Chao, Low-degree gravity change from GPS data of COSMIC and GRACE satellite missions, J. Geodynamics, doi: 10.1016/j.jog.2011.08.004, 2012.

Yan, H. M., and B. F. Chao *, Effect of global mass conservation among geophysical fluids on the seasonal length of day variation, J. Geophys. Res., 117, B02401, doi:10.1029/2011JB008788, 2012.

Yeh, T. K., B. F. Chao, C. S. Chen, C. H. Chen, Z. Y. Lee, Performance improvement of network-based RTK-GPS positioning in Taiwan, Survey Review, 44 (324), 3-8, 2012.

Wada, Y., L. P. H. van Beek, F. C. Sperna Weiland, B. F. Chao, Y. H. Wu, and M. F. P. Bierkens, Past and future contribution of global groundwater depletion to sea-level rise, Geophys. Res. Lett., 39, L09402, doi:10.1029/2012GL051230, 2012.

Yuan, L., and B. F. Chao *, Analysis of tidal signals in surface displacement measured by a dense continuous GPS array, Earth Planet. Sc. Lett., 355, 255-261, doi: 10.1016/j.epsl.2012.08.035, 2012.

Sánchez-Reales, J. M., I. Vigo, S. G. Jin, B. F. Chao, Global Surface Geostrophic Ocean Currents derived from Satellite Altimetry and GOCE Geoid, Marine Geodesy, 35:sup1, 175-189, 2012.

Lo, C. L., E. T. Chang, B. F. Chao, C. C. Chiang, Relocating the historical 1951 Hualien earthquake in eastern Taiwan based on tide gauge record, Geophys. J. Int., 192, 854-860, doi: 10.1093/gji/ggs058, 2013.

Yuan, L., B. F. Chao *, X. Ding, and P. Zhong, The tidal displacement field at Earth surface determined using global GPS observations, J. Geophys. Res., 118, doi: 10.1002/jgrb.50159, 2013.

Matsuo, K., B. F. Chao, T. Otsubo, and K, Heki, Accelerated ice mass depletion revealed by low-degree gravity field from satellite laser ranging: Greenland, 1991-2011, Geophys. Res. Lett., 40, doi:10.1002/grl.50900, 2013.

Chao, B. F., W. Y. Chung, Z. R. Shih, and Y. K. Hsieh, Earth's rotation variations: A wavelet analysis, Terra Nova, 26, 260-264, doi: 10.1111/ter.12094, 2014.

Chao, B. F. and H. Ding, Spherical harmonic stacking for the singlets of Earth’s normal modes of free oscillation, Geophys. Res. Lett., 41, doi: 10.1002/2014GL060700, 2014.

Chao, B. F., On gravitational energy associated with the Earth’s changing oblateness, Geophys. J. Int., 199, 800-804, doi: 10.1093/gji/ggu301, 2014.

Chang, E. T., and B. F. Chao, Analysis of co-seismic deformation using EOF method on dense, continuous GPS data in Taiwan, Tectonophysics, 637, 106-115, doi: 10.1016/j.tecto.2014.09.011, 2014.

Komori, S., M. Utsugi, T. Kagiyama, H. Inoue, C. Chen, H. T. Chiang, B. F. Chao, R. Yoshimura, and W. Kanda, Hydrothermal system in the Tatun Volcano Group, northern Taiwan, inferred from crustal resistivity structure by audio-magnetotellurics. Progress in Earth and Planetary Science, 1, 20, doi:10.1186/s40645-014-0020-7, 2014.

Xu, C. Y., W. K. Sun, and B. F. Chao, Formulation of co-seismic changes in Earth rotation and low-degree gravity field based on the spherical-Earth dislocation theory, J. Geophys. Res., 119, 9031-9041, doi: 10.1002/2014JB011328, 2014.

Xu, C. Y., and B. F. Chao*, Seismological vs. geodetic reference frames for seismic dislocation: Consistency under momentum conservations, Geophys. J. Int., 200, doi: 10.1093/gji/ggu439, 2014.

Zhang, Z. Z., B. F. Chao, J. L. Chen, and C. R. Wilson, Terrestrial water storage anomalies of Yangtze River Basin draughts observed by GRACE and connections with ENSO, Global and Planetary Changes, 126, 35-45, doi: 10.1016/j.gloplacha.2015.01.002, 2015.

Ding, H., and B. F. Chao*, Detecting harmonic signals in a noisy time series: The z-domain AutoRegressive (AR-z) spectrum, Geophys. J. Int., 201, 1287-1296, doi: 10.1093/gji/ggv077, 2015.

Ding, H., and B. F. Chao *, Data stacking methods for isolation of normal-mode singlets of Earth’s free oscillation: Extensions, comparisons and applications, J. Geophys. Res., 120, 5035-5050, doi:10.1002/2015JB012025, 2015.

Ding, H., and B. F. Chao*, The Slichter mode of the Earth: Revisit with optimal stacking and autoregressive methods on full superconducting gravimeter dataset, J. Geophys. Res., doi: 10.1002/2015JB012203, 2015.

Chao, B. F., and Y. K. Hsieh, The Earth’s free core nutation: Formulation of dynamics and estimation of eigenperiod from the very-long-baseline interferometry data, Earth Planet. Sc. Lett., doi:10.1016/j.epsl.2015.10.010, 2015.

Chang, E. T., B. F. Chao, G. Y. Chen, and J. M. Liau, Internal tides recorded at ocean bottom off the coast of Southeast Taiwan, J. Geophys. Res., Oceans, doi:10.1002/2015JC011370, 2016.

Chao, B. F., Caveats on the equivalent-water-thickness and surface mascon solutions derived from the GRACE satellite-observed time-variable gravity, J. Geodesy, 90(9), 807-813, doi:10.1007/s00190-016-0912-y, 2016.

Chao, B. F., and H. Ding, Global coseismic geodynamic changes induced by all major earthquakes, 1976-2015, J. Geophys. Res., 121, doi:10.1002/2016JB013161, 2016.

Ding, H., and B. F. Chao*, Solid pole tide in global GPS and superconducting gravimeter observations: signal retrieval and inference for mantle anelasticity, Earth Planet. Sc. Lett., doi:10.1016/j.epsl.2016.11.039, 2016.

Mouyen, M., B. F. Chao*, C. Hwang, and W. C. Hsieh, Gravity monitoring of Tatun Volcanic Group activities and inference for underground fluid circulations, J. Volcanology Geothermal Res., doi:10.1016/j.jvolgeores.2016.10.001, 2016.

Wada, Y., J. Reager, B. F. Chao, J. Wang, M. H. Lo, C. Song, Y. Li, A. S. Gardner, Recent changes in land water storage and its contribution to sea level change, Survey in Geophysics, doi:10.1007/s10712-016-9399-6, 2016.

Xu, C. Y., and B. F. Chao, Coseismic changes of gravitational potential energy induced by global earthquakes based on spherical-Earth elastic dislocation theory, J. Geophys. Res., doi: 10.1002/2017JB014204, 2017.

Chao, B. F., Dynamics of axial torsional libration under the mantle-inner core gravitational interaction, J. Geophys. Res., 121, doi:10.1002/2016JB013515, 2017.

Chao, B. F., Dynamics of the inner-core wobble under mantle-inner core gravitational interactions, J. Geophys. Res., doi:10.1002/2017JB014405, 2017.

Liau, J. R., and B. F. Chao*, Variation of Antarctic Circumpolar Current and its intensification in relation to the Southern Annular Mode detected in the time-variable gravity signals by GRACE satellite, Earth, Planets Space, 69, doi:10.1186/s40623-017-0678-32017, 2017.

Kumar, U., B. F. Chao, Y. K. Hsieh, and E. T. Chang, A meteor shockwave event recorded at seismic and infrasound stations in northern Taiwan, Geoscience Letters, 4, doi:10.1186/s40562-017-0079-2, 2017.

Komori, S.,  M. Utsugi, T. Kagiyama, S. Yoshikawa, C. H. Chen, and B. F. Chao, Resistivity mapping in the Tatun Volcano Group, Northern Taiwan, revealed by VLF-MT surveys, TAO, 28, doi:10.3319/TAO.2017.02.20.01  2017.

Chao, B. F., On rotational normal modes of the Earth: resonance, excitation, convolution, deconvolution and all that, J. Geodesy Geodynamics, doi:10.1016/j.geog.2017.03.014, 2017.

Kuang, W. J., B. F. Chao, and J. L. Chen, Decadal polar motion of the Earth excited by the convective outer core from geodynamo simulations, J. Geophys. Res., in press, 2017.

 

 

 

Popular Science Publications in Chinese:

 

地球的音樂,自然雜誌,3, 602-605, 1980; 科學月刊, 12, #4, 47-52, 1981.

煮酒話白山,科學月刊,13, #6,50-56,1982.

IDA:長周期地震網, Developments in World Seismology, #12, 11-14, 1982.

為嫦娥把脈,科學月刊, 17, 33-38,1986.

月震的研究,Developments in World Seismology, #6, 3-6, 1986.

地表板塊在漂移!科學月刊,19, 283-285, 1988.

一窺君顏 :話海王星系,科學月刊, 20, 874-878, 1989.

入地比登天還難,幼獅少年,153, 88-91, 1989.

走馬看花訪行星,幼獅少年,156, 84-89, 1989.

只緣身在此山中,幼獅少年,173, 28-30, 1991.

見微知著:話地球自轉,科學月刊,21, 866-876,1990;自然雜誌,18, 63-72, 1996.

地球是個發電機:真實與虛擬共舞,科學人,39, May, 2005.

地球的奇異小夥伴月亮,科學人,55, September, 2006.

南極天空最亮的眼睛,科學月刊, 38, 580-584, 2007.

重返月球:這回玩真的嗎?科學人, 70, December, 2007.

海平面,你隱藏了多少秘密科學人, 75, May, 2008.

地球科學+人文= 心智的饗宴,科學人, 87, May, 2009.

燭龍:千百世代的古今奇緣,科學人, 87, May, 2009.

北回歸線去來兮,科學人, 88, June, 2009.

地球自轉漸慢板的樂章,科學人, 89, July, 2009.

地球自轉﹕多姿多采的旋舞,科學人, 90, August, 2009.

字彙裡的冰字What's in a name? 科學人,91, September, 2009.

本末倒置的命題,科學人,92, October, 2009.

單位計量的吊,科學人,93, November, 2009.

遠古的天山傳奇,科學人,94, December, 2009.

《羿射十日》事件始末報告,科學人, 94, January, 2010.

畫龍話,科學人, 96, February, 2010.

龍話字,科學人, 97, March, 2010.

風中去來,科學人, 98, April, 2010.

你會回來嗎, 科學人, 99, May, 2010.

尺寸、維度惹麻煩: Size matters, 科學人, 100, June, 2010.

真戲假辨:別傻了!, 科學人, 101, July, 2010.

晝、夜分明 -- 晝篇, 科學人, 102, August, 2010.

晝、夜分明 -- 夜篇, 科學人, 103, September, 2010.

咫尺天涯,科學人, 104, October, 2010.

陰錯陽差,科學人, 105, November, 2010.

遙測老把戲 + 新科技, 科學人, 106, December, 2010.

假戲真作:別鬧了!, 科學人, 107, January, 2011.

地震!把地球震歪了?科學人, 108, February, 2011.

雙場記:A Tale of Two Fields 磁場篇,科學人, 109, March, 2011.

雙場記:A Tale of Two Fields 重力場篇,科學人, 110, April, 2011.

地震!規模二三事, 科學人, 111, May, 2011.

費曼大師的小失誤, 科學人, 112, June, 2011.

太空裡的歷史迷思:NASA和哥達德, 科學人, 113, July, 2011.

太空裡的科幻迷思NASA外星人, 科學人, 114, August, 2011.

蓋棺論定太空梭, 科學人, 115, September, 2011.

一代司天監,千古說夢溪,科學人, 116, October, 2011.

康熙、台北、湖,科學人, 117, November, 2011.

海陸之際的災變海嘯在台灣, 科學人, 118, December, 2011.

弄假成真的旁門左道,科學人, 119, January, 2012.

又見龍年,科學人, 120, February, 2012.

春日時空、陰陽、五行,科學人, 121, March, 2012.

浩浩神水何方來,科學人, 122, April, 2012.

問蒼茫大海何去何從:經緯之辨, 科學人, 123, May, 2012.

問蒼茫大地何去何從:方向為憑, 科學人, 124, June, 2012.

將軍崖岩畫天外來客科學人, 125, July, 2012.

天旋地轉尋根由,科學人, 126, August, 2012.

地老天荒問幾何(一), 科學人, 127, September, 2012.

地老天荒問幾何(二), 科學人, 128, October, 2012.

聖嬰聖女:一樣頑皮兩樣情,科學人, 129, November, 2012.

太空垃圾知多少,科學人, 130, December, 2012.

天上人間:藍色的彈珠,科學人, 131, January, 2013.

我的時空奇航,科學人, 132, February, 2013.

《天地間古今事》《科學人》名家專欄特輯遠流出版社台北ISSN: 1682-2811, September, 2013.

 

 

 


Popular Press/Media Coverages (a sample) based on the following papers:

 

Chao, B. F. and Gross, R. S., Changes in the Earth's rotation and low-degree gravitational field induced by earthquakes, Geophys. J. Roy. Astron. Soc., 91, 569‑596, 1987.

Chao, B. F., Length‑of‑day variations caused by El Niño‑Southern Oscillation and Quasi-Biennial Oscillation, Science, 243, 923‑925, 1989.

Chao, B. F., Anthropogenic impact on global geodynamics due to water impoundment in major reservoirs, Geophys. Res. Lett., 22, 3533-3536, 1995.

Chao, B. F., A concrete terrestrial testimony of Milankovitz cycle in Earth's changing obliquity, EOS, Trans. Amer. Geophys. Union, 77, 433, 1996. Also in Earth in Space, AGU, Dec, 1996.

Chao, B. F., R. S. Gross, and Y. B. Han, Seismic excitation of the polar motion, 1977-1993, Pure and Applied Geophysics, 146, 407-419, 1996.

NASA’s interest in Space Geodesy related to MedPark in Univ. Alicante, Spain, 2000.

Cox, C., and B. F. Chao, Detection of a large-scale mass redistribution in the terrestrial system since 1998, Science, 297, 831-833, 2002.

Chao, B. F., and R. S. Gross, Did the 26 December 2004 Sumatra, Indonesia, earthquake disrupt the Earth’s rotation as the mass media have said? EOS, Trans. Amer. Geophys. Union, 86, 1-2, 2005.

Chao, Taiwan shaken by an uncommon earthquake, EOS, Trans. Amer. Geophys. Union, 88, 2, 2007.

Chao, B.F., Y.H. Wu, and Y.S. Li, Impact of artificial reservoir water impoundment on global sea level, Science, doi: 10.1126/science.1154580, 2008.

 

 

Others

 

      Hosted and collaborated with visiting scholars and post-doctoral fellows: Richard Gross, William O’Connor, Andrew Au, Yonghong Zhou, Masato Fuyuya, Jianli Chen, Daniel Steinberg, Masayuki Fujita, Thomas Johnson, Isabel Vigo, Lanbo Liu, Olivier de Viron, Jean-Paul Boy, Jacques Hinderer, David Garcia, Yves Rogister, David Salstein, Chungliang Lo, Ryoko Ogawa, Hao-Ming Yan, Zhi-Zang Zhang, Lin-Guo Yuan, Weijia Kuang, Jose Maria Sanchez-Reales, Koji Matsuo, Severine Rosat, Hsian-Hsiang Hsieh, Maxime Mouyen, Xiang-E Lei, Shogo Komori, Yi-Kai Hsieh, Chang-Yi Xu, Hao Ding, Caibo Hu, Yusaku Tanaka, Jiaming Ou.

     

      Non-profit community services: Board Member of the MeiHwa Chinese School in Washington Metropolitan Area, 1992-94, and Principal, 2000-2004. President of the Goddard Chinese-American Club, 1994-1996. Board Member of the National Taiwan University Alumni Association in the Washington Metropolitan Area, 2000-2002. Member of the Board of Directors of the Chinese-American Oceanic and Atmospheric Association, 2002-2004.

 

      In 2010, while serving as the President of the Chinese Geoscience Union (CGU, 中華民國地球科學學會 理事長), of Taiwan, I initiated the establishment of the Oceanographic Society of the Republic of China (OSROC, 中華民國海洋學會), leading subsequently to its inauguration in 2011. Again in 2014 I (together with other scientists) launched and established the new Geodesy Society of the Republic of China (GSROC, 中華民國測地學會). I was elected and served as the President-elect and subsequently the President of the Geodesy Section of the American Geophysical Union during 2004 - 2008. In 2015 I was elected to be the President of the Asia-Oceania Geosciences Society (AOGS), serving a two-year term of 2016-2018 plus two more years as the Vice President.