Duncan Agnew: Publications

Strain and Tilt Measurement, and Geodetic Monumentation
Crustal Deformation
Earth and Ocean Tides
Earthquake History
Earthquake Statistics
History of Science
Time-series analysis
Long-Period Seismology
Visualization
Miscellaneous

Strain and Tilt Measurement, and Geodetic Monumentation

Barbour, A. J., D. C. Agnew, and F. K. Wyatt (2015). Coseismic strains on Plate Boundary Observatory borehole strainmeters in southern California, Bull. Seismol. Soc. Am., 105, 431-444, doi:10.1785/0120140199

Agnew, D. C., and F. K. Wyatt (2014). Dynamic strains at regional and teleseismic distances, Bull. Seismol. Soc. Am., 104, 1846-1859, doi:10.1785/0120140007

Barbour, A. J., and D. C. Agnew (2012). Detection of seismic signals using seismometers and strainmeters, Bull. Seismol. Soc. Am., 102, 2484-2490, doi:10.1785/0120110298

Barbour, A. J., and D. C. Agnew (2011). Noise levels on Plate Boundary Observatory borehole strainmeters in Southern California, Bull. Seismol. Soc. Am., 101, 2453-2466. doi:10.1785/0120110062

Agnew, D. C. (2007). Before PBO: an overview of continuous strain and tilt measurements in the United States, J. Geod.Soc. Japan, 55, 157-182. PDF

Agnew, D. C., and K. Hodgkinson (2007). Designing compact causal digital filters for low-frequency strainmeter data, Bull. Seismol. Soc. Amer, 97, 91-99. PDF

Wyatt, F. K., and D. C. Agnew (2004). The PIN1 and PIN2 GPS Sites at Piñon Flat Observatory, SIO Technical Report 33, Web Access, Scripps Institution of Oceanography.

Agnew, D. C., and F. K. Wyatt (2003). Long-base laser strainmeters: a review, SIO Technical Report 2, Web Access, Scripps Institution of Oceanography.

Hart, R. H. G., M. T. Gladwin, R. L. Gwyther, D. C. Agnew, and F. K. Wyatt (1996). Tidal calibration of borehole strainmeters: removing the effects of local inhomogeneity, J. Geophys. Res., 101, 25553-25571.

Gomberg, J., and D. C. Agnew (1996). The accuracy of seismic estimates of dynamic strains: an evaluation using strainmeter and seismometer data from Piñon Flat Observatory, California, Bull. Seismol. Soc. Amer., 86, 212-220.

Johnson, H. O., F. K. Wyatt, D. C. Agnew, and W. Zurn (1995). Tidal tilts at Pinyon Flat, California, measured at depths of 24 and 120 meters, pp. 129-136 in Proc. Twelfth Intl. Symposium on Earth Tides, (Beijing: Science Press)

Wyatt, F. K., S-T. Morrissey, and D. C. Agnew (1988). Shallow borehole tilt−A reprise, J. Geophys. Res., 93, 9197-9201.

Agnew, D. C., and F. Wyatt (1988). High-precision continuous crustal deformation measurement at Piñon Flat Observatory, pp. 290-301 in Proc. of the China-U. S. Symposium on Crustal Deformation and Earthquakes, (Beijing: Seismological Press)

Agnew, D. C. (1987). The continuous measurement of crustal deformation, Methods in Experimental Physics, 24B, 409-439.

Agnew, D. C. (1986). Strainmeters and tiltmeters, Rev. Geophys., 24, 579-624. PDF (courtesy of Walter Szeliga).

Wyatt, F., R. Bilham, R. J. Beavan, A. G. Sylvester, T. Owen, A. Harvey, C. Macdonald, D. Jackson, and D. C. Agnew (1984). Comparing tiltmeters for use in crustal deformation measurements: a preliminary report, Geophys. Res. Lett., 11, 963-966.

Wyatt, F., D. C. Agnew, A. Linde, and I. S. Sacks (1983). Borehole strainmeter studies at Piñon Flat Observatory, Year Book Carnegie Inst. Washington, 82, 533-538.

Wyatt, F., G. Cabaniss, and D. C. Agnew (1982). A comparison of tiltmeters at tidal frequencies, Geophys. Res. Lett., 9, 743-746.

Linde, A., I. Sacks, M. Johnston, F. Wyatt, and D. C. Agnew (1982). The borehole strainmeter program in California—Installation and preliminary results, Carnegie Inst. Wash. Yearbook, 81, 517-520.

Crustal Deformation

Agnew, D. C. (2013). Realistic simulations of geodetic network data: The Fakenet package, Seismol. Res. Lett., 84 , 426-432, doi:10.1785/0220120185

Shen, Z.-K., R. W. King, D. C. Agnew, M. Wang, T. A. Herring, D. Dong, and P. Fa ng (2011). A unified analysis of crustal motion in Southern California, 1970-2004: The SCEC Crustal Motion Map, J. Geophys. Res., 116, B11402. doi:10.1029/2011JB008549

Rolandone, F., R. Burgmann, D. C. Agnew, I. A. Johanson, D. C. Templeton, M. A. d’Alessio, S. J. Titus, C. DeMets, and B. Tikoff (2008). Aseismic slip and fault-normal strain along the central creeping section of the San Andreas fault, Geophys. Res. Lett., 35, L14305, doi:10.1029/2008GL034437 PDF See here for a comment and here for the reply.

King, N. E., D. Argus, J. Langbein, D. C. Agnew, G. Bawden, R. S. Dollar, Z. Liu, D. Galloway, E. Reichard, A. Yong, F. H. Webb, Y. Bock, K. Stark, and D. Barseghian (2007). Space geodetic observation of expansion of the San Gabriel Valley, California, aquifer system, during heavy rainfall in winter 2004-2005, J. Geophys. Res., 112, B03409, doi:10.1029/2006JB004448.

Meltzner, A. J., K. Sieh, M. Abrams, D. C. Agnew, K. W. Hudnut, J.-P. Avouac, and D. H. Natawidjaja (2005). Uplift and subsidence associated with the great Acech-Andaman earthquake of 2004, J. Geophys. Res. (2006) 111, B02407, doi:10.1029/2005JB003891. PDF

Gonzalez-Garcia, J. J., L. Prawirodirdjo, Y. Bock, and D. Agnew (2003). Guadalupe Island, Mexico as a new constraint for Pacific plate motion, Geophys. Res. Lett., 30, 1423-1432.. PDF

Anderson, G., D. C. Agnew, and H. O. Johnson (2003). Salton Trough regional deformation estimated from combined trilateration and survey-mode GPS data, Bull. Seismol. Soc. Amer., 93, 2402-2414. PDF

Owen, S., G. Anderson, D. C. Agnew, H. Johnson, K. Hurst, R. Relinger, Z.-K. Shen, J. Svarc, and T. Baker (2002). Early postseismic displacements from the M W 7.1 Hector Mine earthquake as measured by survey-mode GPS, Bull. Seismol. Soc. Amer., 92, 1423-1432.. PDF

Agnew, D. C., S. Owen, Z.-K. Shen, G. Anderson, J. Svarc, H. Johnson, K. E. Austin, and R. Reilinger (2002). Coseismic displacements from the Hector Mine, California, earthquake: results from survey-mode GPS measurements, Bull. Seismol. Soc. Amer., 92, 1355-1364.. PDF

Fialko, Y., D. Sandwell, D. Agnew, M. Simons, P. Shearer, and B. Minster (2002). Deformation on nearby faults induced by the 1999 Hector Mine earthquake, Science, 297, 1858-1862. PDF

Fialko, Y., M. Simons, and D. Agnew (2001). The complete (3-D) surface displacement field in the epicentral area of the 1999 M$""sub w$ 7.1 Hector Mine earthquake, California, from space geodetic observations, Geophys. Res. Lett., 28, 3063-3066. PDF

Sandwell, D. T., L. Sichoix, D. Agnew, Y. Bock, and J.-B. Minster (2000). Near real-time radar interferometry of the M7.1 Hector Mine earthquake, Geophys. Res. Lett., 27, 3101-3104. PDF

Bock, Y., S. Wdowinski, P. Fang, S. Williams, H. Johnson, J. Behr, J. Genrich, J. Dean, M. van Domeselaar, D. C. Agnew, F. Wyatt, K. Stark, B. Oral, K. Hudnut, R. King, T. Herring, W. Young, D. Jackson, and W. Gurtner (1997). Southern California Permanent GPS Geodetic Array: Continuous measurements of crustal deformation between the 1992 Landers and 1994 Northridge earthquakes, J. Geophys. Res., 102, 18013-18033.

Johnson, H., and D. Agnew (1995). Monument motion and measurements of crustal velocities, Geophys. Res. Lett., 22, 2905-2908. PDF

Abercrombie, R. E., D. C. Agnew, and F. K. Wyatt (1995). Testing a model of earthquake nucleation, Bull. Seismol. Soc. Amer., 85, 1873-1878.

Wyatt, F. K., D. C. Agnew, and M. Gladwin (1994). Continuous measurements of crustal deformation for the 1992 Landers earthquake sequence, Bull. Seismol. Soc. Amer., 84, 768-779.

Johnston, M. J. S., A. T. Linde, and D. C. Agnew (1994). Continuous borehole strain in the San Andreas fault zone before during, and after the 28 June 1992, $M sub w$ 7.3 Landers, California earthquake, Bull. Seismol. Soc. Amer., 84, 799-805.

Johnson, H., F. Wyatt, and D. C. Agnew (1994). Present-day crustal deformation in southern California, J. Geophys. Res., 99, 23951-23974. PDF

Johnson, H. O., D. C. Agnew, and K. Hudnut (1994). Extremal bounds on earthquake moment from geodetic data: application to the Landers earthquake, Bull. Seismol. Soc. Amer., 84, 660-667.

Larsen, S., D. C. Agnew, and B. Hager (1993). Strain accumulation in the Santa Barbara Channel: 1970-1988, J. Geophys. Res., 98, 2119-2133.

Feigl, K. L., D. C. Agnew, Y. Bock, D. Dong, A. Donnellan, B. H. Hager, T. A. Herring, D. D. Jackson, T. H. Jordan, R. W. King, S. Larsen, K. M. Larson, J. H. Murray, Z. Shen, and F. H. Webb (1993). Space geodetic measurement of crustal deformation in central and southern California, 1984-1992, J. Geophys. Res., 98, 21677-21712.

Bock, Y., D. C. Agnew, P. Fang, J. F. Genrich, B. H. Hager, T. A. Herring, K. W. Hudnut, R. W. King, S. Larsen, J. B. Minster, K. Stark, S. Wdowinski, and F. K. Wyatt (1993). Detection of crustal deformation from the Landers earthquake sequence using continuous geodetic measurements, Nature, 361, 337-340.

Larson, K. M., and D. C. Agnew (1991). Application of the Global Positioning System to crustal deformation measurement, 1. Precision and accuracy, J. Geophys. Res., 96, 16547-16565.

Larson, K. M., F. H. Webb, and D. C. Agnew (1991). Application of the Global Positioning System to crustal deformation measurement, 2. The influence of errors in orbit determination networks, J. Geophys. Res., 96, 16567-16584.

Dixon, T. H., G. Blewitt, K. Larson, D. C. Agnew, B. H. Hager, P. Kroger, L. Skrumeda, and W. E. Strange (1990). GPS measurements of regional deformation in southern California, EOS Trans. Amer. Geophys. Union, 71, 1051-1053.

Agnew, D. C., and F. K. Wyatt (1989). The 1987 Superstition Hills earthquake sequence: strains and tilts at Piñon Flat Observatory, Bull. Seismol. Soc. Amer., 79, 480-492.

King, N. E., D. C. Agnew, D. C., and F. Wyatt, (1988). Comparing strain events: a case study for the Homestead Valley earthquakes, Bull. Seismol. Soc. Amer., 78, 1693-1706.

Earth and Ocean Tides

Agnew, D. C. (2017). An improbable observation of the diurnal core resonance, Pure Appl. Geophys., ??, 1-11, doi:10.1007/s00024-017-1522-1

Agnew, D. C. (2012). SPOTL: Some Programs for Ocean-Tide Loading, SIO Technical Report, Scripps Institution of Oceanography, Web Access

Tamura, Y., and D. C. Agnew (2008). Baytap08 Users Manual, SIO Technical Report 82, Web Access, Scripps Institution of Oceanography.

Agnew, D. C. (2007). Earth Tides, pp. 163-195 in Treatise on Geophysics: Geodesy, T. A. Herring, ed., Elsevier, New York.

Elkhoury, J. E., E. E. Brodsky, and D. C. Agnew (2006). Seismic waves increase permeability, Nature (2006) 441 1135-1138. PDF

Agnew, D. C. (2001). Map projections to show the possible effects of surface loading, J. Geod. Soc. Japan, 47, 255-260. PDF

Agnew, D. C. (1997). NLOADF: a program for computing ocean-tide loading, J. Geophys. Res., 102, 5109-5110. PDF

Agnew, D. C. (1996). SPOTL: Some Programs for Ocean-Tide Loading, SIO Reference Series 96-8, Scripps Institution of Oceanography.

Agnew, D. C. (1995). Ocean-load tides at the South Pole: a validation of recent ocean-tide models, Geophys. Res. Lett., 22, 3063-3066. PDF

Rojstaczer, S., and D. C. Agnew (1989). The influence of formation material properties on the response of water levels in wells to earth tides and atmospheric loading, J. Geophys. Res., 94, 12403-12411.

Knopoff, L., P. A. Rydelek, W. Zurn, and D. C. Agnew (1989). Observations of load tides at the South Pole, Phys. Earth Planet. Inter., 54, 33-37.

Davis, P., P. Rydelek, D. C. Agnew, and A. Okamura (1987). Observation of tidal tilt on Kilauea Volcano, Hawaii, Geophys. J. R. Astron. Soc., 90, 233-244.

Agnew, D. C. (1986). Detailed analysis of tide gauge data: A case history, Marine Geod., 10, 231-255.

Liu, H.-P., E. D. Sembera, R. E. Westerlund, J. B. Fletcher, P. Reasenberg, and D. C. Agnew (1985). Tidal variation of seismic travel times in a Massachusetts granite quarry, Geophys. Res. Lett., 12, 243-246.

Agnew, D. C. (1983). Conservation of mass in tidal loading computations, Geophys. J. R. Astron. Soc., 72, 321-325.

Agnew, D. C. (1981). Nonlinearity in rock: evidence from earth tides, J. Geophys. Res., 86, 3969-3978.

Agnew, D. C. (1979). Strain tides at Piñon Flat: Analysis and interpretation, Ph. D. Thesis, University of California, San Diego.

Agnew, D. C., and W. Farrell (1978). Self-consistent equilibrium ocean tides, Geophys. J. R. Astron. Soc., 55, 171-181.

Earthquake History

Agnew, D. C. (2011). Intensities for the four largest shocks of the New Madrid earthquake sequence,, SIO Technical Report, Scripps Institution of Oceanography, Web Access

Agnew, D. C. (2008). Reports of the great California Earthquake of 1857 SIO Technical Report 50, Web Access, Scripps Institution of Oceanography.

Agnew, D. C. (1991). How complete is the pre-instrumental record of earthquakes in Southern California?, pp. 75-88 in Environmental Perils, San Diego Region, P. L. Abbott and W. J. Elliott, eds. (San Diego: San Diego Assoc. of Geologists for the Geol. Soc. of America) PDF

Anderson, J. G., T. K. Rockwell, and D. C. Agnew (1989). Past and possible future earthquakes of significance to the San Diego region, Earthq. Spectra, 5, 299-335. PDF

Legg, M., and D. C. Agnew (1979). The 1862 earthquake in San Diego, pp. 139-141 in Earthquakes and Other Perils, San Diego Region, P. L. Abbott and W. J. Elliott, eds. (San Diego: San Diego Assoc. of Geologists for the Geol. Soc. of America)

Agnew, D. C., M. Legg, and C. Strand (1979). Earthquake history of San Diego, pp. 123-138 in Earthquakes and Other Perils, San Diego Region, P. L. Abbott and W. J. Elliott, eds. (San Diego: San Diego Assoc. of Geologists for the Geol. Soc. of America) PDF

Agnew, D. C. (1979). Tsunami history of San Diego, pp. 117-122 in Earthquakes and Other Perils, San Diego Region, P. L. Abbott and W. J. Elliott, eds. (San Diego: San Diego Assoc. of Geologists for the Geol. Soc. of America) PDF

Agnew, D. C., and K. Sieh (1978). A documentary study of the felt effects of the great California earthquake of 1857, Bull. Seismol. Soc. Amer., 68, 1717-1729.

Agnew, D. C. (1978). The 1852 Fort Yuma earthquake: two additional accounts, Bull. Seismol. Soc. Amer., 68, 1761-1762.

Earthquake Statistics

Agnew, D. C. (2010). Comment on "Changes of reporting rates in the Southern California earthquake catalog, introduced by a new definition of ML" by Thessa Tormann, Stefan Wiemer, and Egill Hauksson, Bull. Seismol. Soc. Amer., 100, 3320-3324. doi:10.1785/0120100027

Astiz, L., P. M. Shearer, and D. C. Agnew (2000). Precise relocations and stress change calculations for the Upland earthquake sequence in southern California, J. Geophys. Res., 105, 2937-2953.

Vidale, J. E., D. C. Agnew, M. J. S. Johnston, and D. H. Oppenheimer (1998). Absence of earthquake correlation with earth tides: an indication of high preseismic fault stress rate, J. Geophys. Res., 103, 24567-24572. PDF

Agnew, D. C., and W. Ellsworth (1991). Earthquake prediction and long-term hazard assessment, Rev. Geophys, 96, 877-889.

Agnew, D. C., and L. M. Jones (1991). Prediction probabilities from foreshocks, J. Geophys. Res., 96, 11959-11971.

Agnew, D. C. (1990). The use of time-of-day seismicity maps for earthquake/explosion discrimination by local networks, with an application to the seismicity of San Diego County, Bull. Seismol. Soc. Amer., 80, 747-750.

History of Science

Agnew, D. C. (2008). Benioff, Victor Hugo, pp. 243-245 in Complete Dictionary of Scientific Biography, (Detroit: Charles Scribner’s Sons)

Agnew, D. C. (2008). Menard, Henry William, pp. 96-97 in Complete Dictionary of Scientific Biography, (Detroit: Charles Scribner’s Sons)

Agnew, D. C. (2008). Richter, Charles Francis, pp. 241-243 in Complete Dictionary of Scientific Biography, (Detroit: Charles Scribner’s Sons)

Agnew, D. C. (2004). Robert FitzRoy and the myth of the ‘Marsden square’: Transatlantic rivalries in early marine meteorology, Notes Records Roy. Soc., 58, 21-46. PDF

Agnew, D. C. (2002). History of seismology, pp. 3-13 in IASPEI International Handbook of Earthquake and Engineering Seismology, (San Diego: Academic Press) PDF (main text) and PDF (Figure 1) and PDF (Notes)

Agnew, D. (1998). Tides, Earth, pp. 810-812 in Sciences of the Earth: An Encyclopedia of Places, People, and Phenomena, (New York: Garland Publishing)

Agnew, D. (1998). Instruments, Gravity, pp. 453-455 in Sciences of the Earth: An Encyclopedia of Places, People, and Phenomena, (New York: Garland Publishing)

Agnew, D. (1998). Gravity since 1800, pp. 403-406 in Sciences of the Earth: An Encyclopedia of Places, People, and Phenomena, (New York: Garland Publishing)

Agnew, D. (1989). Seismology: History, pp. 1198-1202 in Encyclopedia of Solid Earth Geophysics, (New York: Van Nostrand Reinhold)

Time-series analysis

Agnew, D. C. (1992). The time-domain behavior of power-law noises, Geophys. Res. Lett., 19, 333-336. PDF

Agnew, D. C. (1989). Robust pilot spectrum estimation for the quality control of digital seismic data, Bull. Seismol. Soc. Amer., 79, 180-188.

Berger, J., D. C. Agnew, R. Parker, and W. Farrell (1979). Seismic system calibration: 2. Cross-spectral calibration using random binary signals, Bull. Seismol. Soc. Amer., 69, 271-288.

Long-Period Seismology

Agnew, D. C., and K. M. Larson (2007). Finding the repeat times of the GPS constellation, GPS Solutions, 11, 71-76.

Nikolaidis, R., Y. Bock, P. J. de Jonge, P. Shearer, D. C. Agnew, and M. Van Domselaar (2001). Seismic wave observations with the Global Positioning System, J. Geophys. Res., 106, 21897-21916 . PDF

Cummins, P., J. M. Wahr, D. C. Agnew, and Y. Tamura (1991). Constraining core undertones using stacked IDA gravity records, Geophys. J. Internat., 106, 189-198.

Wang, L., Z. Zhao, Z. Wang, and D. C. Agnew (1987). Long period source parameters of the Wuqia, Xinjiang earthquake of August 23, 1985: Results from inversion of the records of the IDA network, Acta Seismol. Sinica, 2, 108-111.

Agnew, D. C., J. Berger, W. E. Farrell, J. F. Gilbert, G. Masters, and D. Miller (1986). Project IDA: A decade in review, EOS Trans. Amer. Geophys. Union, 67, 203-212.

Riedesel, M., D. C. Agnew, J. Berger, and F. Gilbert (1980). Stacking for the frequencies and Q’s of 0 S 0 and 1S 0 , Geophys. J. R. Astron. Soc., 62, 457-471.

Agnew, D. C., and J. Berger (1978). Vertical seismic noise at very low frequencies, J. Geophys. Res., 83, 5420-5424.

Agnew, D. C., J. Berger, R. Buland, W. Farrell, and F. Gilbert (1976). International Deployment of Accelerometers: a network for very long period seismology, EOS Trans. Amer. Geophys. Union, 57, 180-188. PDF

Visualization

Agnew, D. C. (2015). Equalized plot scales for exploring seismicity data, Seismol. Res. Lett., 86, 1412-1423, doi:10.1785/0220150054

Agnew, D. C. (2014). Variable star symbols for seismicity plots, Seismol. Res. Lett., 85, 775-780, doi:10.1785/0220130214

Agnew, D. C. (2009). Upside-Down Quakes: Displaying 3D seismicity with Google Earth, Seismol. Res. Lett., 80, 499-505, doi:10.1785/gssrl.80.3.499 PDF

Miscellaneous

Gomberg, J., A. Wech, K. Creager, K. Obara, and D. Agnew (2016). Reconsidering earthquake scaling, Geophys. Res. Lett., 43, 6243-6251, doi:10.1002/2016GL069967

Borsa, A. A., D. C. Agnew, and D. R. Cayan (2014). Ongoing drought-induced uplift in the western United States, Science, 345, 1587-1590, doi:10.1126/science.1260279

Wang, T-H., E. S. Cochran, D. Agnew, and D. Oglesby (2013). Infrequent triggering of tremor along the San Jacinto fault near Anza, California, Bull. Seismol. Soc. Amer., 103 , 2482-2497, doi:10.1785/0120120284

Agnew, D. C. (2005). GHAM: a compact global geocode suitable for sorting, Comput. Geosci., 31, 1042-1047. PDF

King, N. E., and D. C. Agnew (1991). How large is the retrograde annual wobble?, Geophys. Res. Lett., 18, 1735-1738.

Agnew, D. (1989). Seismic Instrumentation, pp. 1033-1037 in Encyclopedia of Solid Earth Geophysics, (New York: Van Nostrand Reinhold)

Jones, G., T. Hilde, G. Sharman, and D. C. Agnew (1979). Fault patterns in outer trench walls and their tectonic significance, J. Phys. Earth, 26, S85-S101.

Agnew, D. C., and H. Arp (1973). A list of quasi-stellar radio source candidates from the 3C and 4C catalogs between declination -7° and +40°, Public. Astron. Soc. Pacific, 85, 162-173.