Catherine de Groot-Hedlin

Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, 92093-0225, USA Telephone: 1-858-534-2313 Fax: 1-858-534-5332 email: chedlin.ucsd.edu

Research Interests:

Infrasound and Hydroacoustic propagation

Computational modelling

Inverse methods in geophysics

Nuclear Test Ban Monitoring

In most cases, the links will work only if you have internet access to the relevant journals.

2011

Kristoffer Walker, Richard Shelby, Micheal Hedlin, Catherine de Groot-Hedlin, Frank Vernon 2011, Illuminating hotspots in the western U.S. with the USArray Journal of Geophysical Research (Solid Earth), in press, doi:10.1029/2011JB008579
Catherine de Groot-Hedlin, Michael Hedlin, and Kristoffer Walker, 2011, Finite difference synthesis of infrasound propagation through a windy, viscous atmosphere: Application to a bolide explosion detected by seismic networks Geophys. J. Int., doi:10.1111/j.1365-246X.2010

2010

Michael A.H. Hedlin, Douglas Drob, Kristoffer Walker, Catherine de Groot-Hedlin, 2010, A study of acoustic propagation from a large bolide in the atmosphere with a dense seismic network Journal of Geophysical Research (Solid Earth), 115 B11312, doi:10.1029/2010JB007669
Kristoffer Walker, Michael Hedlin, Catherine de Groot-Hedlin, Julien Vergoz, Alexis Le Pichon, Douglas Drob, 2010, The Source location of the 19 February 2008 Oregon Bolide using Seismic Networks and Infrasound Arrays Journal of Geophysical Research (Solid Earth), 115 B11312, doi:10.1029/2010JB007669

2009

Robin S. Matoza, Milton A. Garces, Bernard A. Chouet, Luca D'Auria, Michael A.H. Hedlin, Catherine de Groot-Hedlin, Gregory P. Waite, 2009, The source of infrasound associated with long-period events at Mount St. Helens Journal of Geophysical Research (Solid Earth), 114 B04305, doi:10.1029/2008JB006128
C. de Groot-Hedlin, D.K. Blackman, and C.S. Jenkins, 2009, Effects of variability associated with the Antarctic Circumpolar Current on sound propagation in the ocean, Geop. J. Int., 176, 478-490,
Hedlin, M.A.H., de Groot-Hedlin, C.D. and Walker, K., 2009, Looking up with the USArray, Earthscope onsite newsletter, winter 2009, p 1,3.

2008

Catherine D. de Groot-Hedlin, Michael A. H. Hedlin, and Kristoffer T. Walker, 2008, Evaluation of infrasound signals from the shuttle Atlantis using a large seismic network J. Acoust. Soc. Am., 124 , 1442-1451.
Catherine D. de Groot-Hedlin, 2008, Finite-difference time-domain synthesis of infrasound propagation through an absorbing atmosphere J. Acoust. Soc. Am., 124 , 1430-1441,
de Groot-Hedlin, C.D., 2008, A Finite Difference solution to the Helmholtz equation in a radially symmetric waveguide; application to near-source scattering in ocean acoustics, J. Computational Acoustics, 16, 447-464.
Herrin, E.T., Bass, H.E., B. Andre, R.L. Woodward, D. D. Drob, M.A.H. Hedlin, M.A. Garces, P.W. Golden, D.E. Norris, C.D. de Groot-Hedlin, K.T. Walker, C.A. L. Szurbela, R.W. Whitaker, and F.D. Shields, 2008, High-altitude infrasound calibration experiments, Acoustics Today, , 4, 9-21.

pre-2007

de Groot-Hedlin, C.D., 2006, Finite difference modeling of magnetotelluric fields: error estimates for uniform and non-uniform grids, Geophyics, , 71, 97-106.
de Groot-Hedlin, C.D., 2005, Estimation of the rupture length and velocity of the Great Sumatra earthquake of Dec 26, 2004 using hydroacoustic signals, Geop. Res. Lett., 32, L11303, doi:10.1029/2005GL022695

Blackman, D.K., C. de Groot-Hedlin, P. Harben, A. Sauter, and J.A. Orcutt, 2004, Testing low/verylow frequency acoustic sources for basin-wide propagation in the Indian Ocean, J. Acoust. Soc. Am., 116 , 2057-2066,
de Groot-Hedlin, C.D., 2004, Criteria for discretization of seafloor bathymetry when using a stairstep approximation: Application to computation of T-phase seismograms, J. Acoust. Soc. Am., 115(3), 1103-1113.
de Groot-Hedlin, C.D., and S. Constable, 2004, Inversion of magnetotelluric data for 2D structure with sharp resistivity constrasts, Geophysics, 69, 78-86.
de Groot-Hedlin, C.D., 2001, Excitation of T-phases by seafloor scattering, J.Acoust. Soc. Am., 109, 1944-1954.
de Groot-Hedlin, C.D., and J.A. Orcutt, 2001, T-phase observations in northern California: Acoustic to seismic coupling at a weakly elastic boundary, PAGEOPH, 158, 513-530.

J. Orcutt, C. de Groot-Hedlin, W. Hodgkiss, W. Kuperman, W. Munk, F. Vernon, P. Worcester, E. Bernard, R. Dziak, C. Fox, C.-S. Chiu, C. Collins, J. Mercer, R. Odom, M. Park, D. Soukup, R. Spindel, 2000, Long-term observations in acoustics-the Ocean Acoustic Observatory Federation, Oceanography, 13a , 57-63.
de Groot-Hedlin, C.D., 2000, Smooth inversion of induction logs for conductivity models with mud filtrate invasion, Geophysics, 65, 1468-1475.
de Groot-Hedlin, C.D., and J.A. Orcutt, 1999, Synthesis of earthquake-generated T-waves, Geophys. Res. Lett., 26, 1227-1230.
de Groot-Hedlin, C.D., and F.L. Vernon, 1998, An evolutionary programming method for estimating layered velocity structure, Bull. Seis. Soc. Am., 88, 1023-1035.
Y. Shen, A. Sheehan, K. Duecker, C. de Groot-Hedlin, H. Gilbert, 1998, Mantle discontinuity structure beneath the southern East Pacific Rise (MELT experiment region) from P-to-S converted phases, Science, 280, 1232-1235.

de Groot-Hedlin, C.D., 1995, Inversion for regional 2-D resistivity structure in the presence of galvanic scatterers, Geophys. J. Int., 122, 877-888.
de Groot-Hedlin, C.D., and Constable, S.C., 1993, Occam's inversion and the North American Central Plains Anomaly, J. Geomag. Geoelectr., 45, 985-999.
de Groot-Hedlin,C.D.,1991, Removal of static shift in two dimensions by regularized inversion, Geophysics, 56, 2102-2106.
de Groot-Hedlin,C.D., and Constable, S.C., 1990, Occam's inversion to generate smooth, two-dimensional models from magnetotelluric data, Geophysics, 55, 1613-1624.
de Groot-Hedlin,C.D., and Rostoker, G., 1987, Magnetic signatures of precursors to substorm expansive phase onset, Journal of Geophysical Research, 92, 5845-5856.

email: chedlin@ucsd.edu
Last modified: October 29 2011