Geophysical Modeling with Satellite Gravity Data: Eigen-6C4 vs. GGM Plus — Oak Academic Publishing
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Geophysical Modeling with Satellite Gravity Data: Eigen-6C4 vs. GGM Plus
Posgrado en Ciencias de la Tierra, Universidad Nacional Autónoma de México, Mexico City, Mexico
,
Román Alvarez, Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas (IIMAS), Universidad Nacional Autónoma de México, CDMX, Mexico City, Mexico
1 Posgrado en Ciencias de la Tierra, Universidad Nacional Autónoma de México, Mexico City, Mexico
2 Román Alvarez, Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas (IIMAS), Universidad Nacional Autónoma de México, CDMX, Mexico City, Mexico
Satellite data sets are an asset in global gravity collections; their characteristics vary in coverage and resolution. New collections appear often, and the user must adapt fast to their characteristics. Their use in geophysical modeling is rapidly increasing; with this in mind we compare two of the most densely populated sets: EIGEN-6C4 and GGMplus. We characterize them in terms of their frequency histograms, Free Air anomalies, power spectrum, and simple Bouguer anomalies. The nature of the digital elevation models used for data reduction is discussed. We conclude that the GGMplus data set offers a better spatial resolution. To evaluate their effect in geophysical modelling, we chose an inland region with a prominent volcanic structure in which we perform 3D inversions of the respective Bouguer anomalies, obtaining density variations that in principle can be associated with the geologic materials and the structure of the volcanic edifice. Model results are analyzed along sections of the inverted data; we conclude that the GGMplus data set offers higher resolution in the cases analyzed.
KeywordsEIGEN-6C4GGMplusSatellite Gravity Data3D inversionsNevado de Toluca
Smith, W.H.F. and Sandwell, D.T. (1997) Global Sea Floor Topography from Satellite Altimetry and Ship Depth Soundings. Science, 277, 1956-1962. https://doi.org/10.1126/science.277.5334.1956
Becker, J.J., Sandwell, D.T., Smith, W.H.F. and Braud, J. (2009) Global Bathymetry and Elevation Data at 30 Arc Seconds Resolution?: Global Bathymetry and Elevation Data at 30 Arc Seconds Resolution: SRTM30_PLUS. Marine Geodesy, 32, 355-371. https://doi.org/10.1080/01490410903297766
Sandwell, D.T. and Smith, W.H.F. (2009) Global Marine Gravity from Retracked Geosat and ERS-1 Altimetry: Ridge Segmentation versus Spreading Rate. Journal of Geophysical Research: Solid Earth, 114, 1-18. https://doi.org/10.1029/2008JB006008
Sandwell, D., Garcia, E., Soofi, K., Wessel, P., Chandler, M. and Smith, W.H.F. (2013) Toward 1-mGal Accuracy in Global Marine Gravity from CryoSat-2, Envisat, and Jason-1. Leading Edge, 32, 892-899. https://doi.org/10.1190/tle32080892.1
Sandwell, D.T., Müller, R.D., Smith, W.H.F., Garcia, E. and Francis, R. (2014) New Global Marine Gravity Model from CryoSat-2 and Jason-1 Reveals Buried Tectonic Structure. Science, 346, 65-67. https://doi.org/10.1126/science.1258213
Ince, E.S., Barthelmes, F., Reißland, S., Elger, K., Förste, C., Flechtner, F. and Schuh, H. (2019) ICGEM—15 Years of Successful Collection and Distribution of Global Gravitational Models, Associated Services, and Future Plans. Earth System Science Data, 11, 647-674. https://doi.org/10.5194/essd-11-647-2019
Pavlis, N.K., Holmes, S.A., Kenyon, S.C. and Factor, J.K. (2012) The Development and Evaluation of the Earth Gravitational Model 2008 (EGM2008). Journal of Geophysical Research: Solid Earth, 117, 1-38. https://doi.org/10.1029/2011JB008916
Hirt, C., Claessens, S., Fecher, T., Kuhn, M., Pail, R. and Rexer, M. (2013) New Ultrahigh-Resolution Picture of Earth’s Gravity Field. Geophysical Research Letters, 40, 4279-4283. https://doi.org/10.1002/grl.50838
Tozer, B., Sandwell, D.T., Smith, W.H.F., Olson, C., Beale, J.R. and Wessel, P. (2019) Global Bathymetry and Topography at 15 Arc Sec: SRTM15+. Earth and Space Science, 6, 1847-1864. https://doi.org/10.1029/2019EA000658
Jarvis, A., Reuter, H.I., Nelson, A., and Guevara, E. (2008) Hole-Filled SRTM for the Globe Version 4. CGIAR-CSI SRTM 90m Database. http://srtm.csi.cgiar.org/
Telford, W.M., Geldart, L.P. and Sheriff, R.E. (1991) Applied Geophysics. 2nd Edition, Cambridge University Press, Cambridge. https://doi.org/10.1016/0031-9201(91)90163-C
Milsom, J. (2003) Magnetic Methods. Field Geophysics: The Geological Field Guide Series (Issue C), John Wiley & Sons, Chichester, 51-67.
Götze, H.J. and Li, X. (1996) Topography and Geoid Effects on Gravity Anomalies in Mountainous Areas as Inferred from the Gravity Field of the Central Andes. Physics and Chemistry of the Earth, 21, 295-297. https://doi.org/10.1016/S0079-1946(97)00051-7
Camacho, M. and Alvarez, R. (2020) Gravimetric Analysis of the Rifts and Volcanic Fields of the Jalisco Block, Mexico. Tectonophysics, 791, Article ID: 228577. https://doi.org/10.1016/j.tecto.2020.228577
Hildenbrand, T.G., Briesacher, A., Flanagan, G. and Hinze, W.J. (2002) Rationale and Operational Plan to Upgrade the U.S. Gravity Database. USGS Open File Report, 12 p. https://doi.org/10.3133/ofr02463
Macleod, I.N. and Ellis, R.G. (2013) Magnetic Vector Inversion, a Simple Approach to the Challenge of Varying Direction of Rock Magnetization. 2013 Australian Society of Exploration Geophysicists, Petroleum Exploration Society of Australia (ASEG-PESA) 23rd International Geophysical Conference and Exhibition, Melbourne, 11-14 August 2013, 6 p. https://doi.org/10.1071/PVv2012n159news
Ellis, R.G., de Wet, B. and Macleod, I.N. (2012) Inversion of Magnetic Data from Remnant and Induced Sources. 2012 Australian Society of Exploration Geophysicists (ASEG) 22nd International Geophysical Conference and Exhibition, Brisbane, 26-29 February 2012, 4 p.
Ingram, D.M., Causon, D.M. and Mingham, C.G. (2003) Developments in Cartesian Cut Cell Methods. Mathematics and Computers in Simulation, 61, 561-572. https://doi.org/10.1016/S0378-4754(02)00107-6
Alvarez, R. and Yutsis, V. (2015) Southward Migration of Magmatic Activity in the Colima Volcanic Complex, Mexico: An Ongoing Process. International Journal of Geosciences, 6, 1077-1099. https://doi.org/10.4236/ijg.2015.69085
Alvarez, R. (2017) Mapping Geologic Interfaces that May Alter Seismic Wave Propagation in the Mexico City Basin. Geofísica Internacional, 56, 37-56. https://doi.org/10.22201/igeof.00167169p.2017.56.1.1733
Guevara, R., Yutsis, V, Varley, N., Almaguer, J., Calderón-Moctezuma, A. and Guevara-Mansilla, O. (2021) Geophysical Determination of the Jalisco and Michoacán Blocks Boundary along the Colima Graben. Journal of South American Earth Sciences, 109, Article ID: 103208. https://doi.org/10.1016/j.jsames.2021.103208
García-Palomo, A., Macías, J.L., Arce, J.L., Capra, L., Garduño, V.H. and Espindola, J.M. (2002) Geology of Nevado de Toluca Volcano and Surrounding Areas, Central Mexico. Geological Society of America: Map and Chart Series MCH089.
Martínez-Serrano, R.G., Schaaf, P., Solís-Pichardo, G., Hernández-Bernal, M.S., Hernández-Treviño, T., Morales-Contreras, J.J. and Macías, J.L. (2004) Sr, Nd and Pb Isotope and Geochemical Data from the Quaternary Nevado de Toluca Volcano, a Source of Recent Adakitic Magmatism, and the Tenango Volcanic Field, Mexico. Journal of Volcanology and Geothermal Research, 138, 77-110. https://doi.org/10.1016/j.jvolgeores.2004.06.007
Ryan, W.B.F., Carbotte, S.M., Coplan, J., O’Hara, S., Melkonian, A., Arko, R., Weissel, R.A., Ferrini, V., Goodwillie, A., Nitsche, F., Bonczkowski, J. and Zemsky, R. (2009) Global Multi-Resolution Topography (GMRT) Synthesis Data Set. Geochemistry Geophysics Geosystems, 10, Article ID: Q03014.
Spector, A. and Grant, F.S. (1970) Statistical Models for Interpreting Aeromagnetic Data. Geophysics, 35, 293-302. https://doi.org/10.1190/1.1440092