Blair professor of geology and professor of applied and computational mathematics. Geophysics department of geosciences princeton university guyot hall princeton nj 08544 contact information. Simulation of anisotropic wave propagation based upon a spectral element method dimitri komatitsch harvard university, department of earth and planetary sciences, 20 oxford street, cambridge, massachusetts 028. Blair professor of geology and professor of applied and computational mathematics, princeton. This cited by count includes citations to the following articles in scholar. Third row lr jeroen tromp, uno vaaland, jiaze he and lucas sawade. After every major earthquake, the earth rings like a bell for several days. Dmitry borisov, fuchun gao, paul williamson, and jeroen tromp. Records of permission for figures 15, 19 and 20 emails. Examples from the johan sverdrup field, central north sea.
Subscribe recommend to a librarian submit an article front matter. Aud 3 yes fwi 4 anisotropic and elastic inversion 2 synopsis. We present some examples of seismic wave propagation in complex geological. Geophysical journal international 9 3, 806 822, 1999. We draw connections between seismic tomography, adjoint methods popular in climate and ocean dynamics, timereversal. Seismic tomography, adjoint methods, time reversal. I have completed a chapter for the treatise on geophysics on forward modeling of body waves recently. The june 9, 1994, bolivia earthquake and the october 4, 1994, kuril islands earthquake provide a unique opportunity for a splitting analysis of the earths long.
Source encoding for adjoint tomography geophysical. Aug 27, 2014 komatitsch d, tromp j 1999 introduction to the spectral element method for threedimensional seismic wave propagation. The new crustal model reveals strong heterogeneity, including local changes of 30% with respect. Jeroen tromp new research findings from princeton university. Adam dziewonski ppt presentation video 2 wave equation with consideration of anisotropy and attenuation. Concurrent risks of dam failure due to internal degradation, strong winds, snow and drought. Aud na yes from acoustic fwi to elastic prestack inversion fwi 4. Jeroen tromp s 333 research works with 11,551 citations and 12,672 reads, including. Tromp, 20, mapping tectonic deformation in the crust and upper mantle beneath europe and the north atlantic ocean, science. The preferential alignment of mineral grains as a result of flow direction can polarize seismic waves traveling through earths interior, based on velocity and direction. Dahlen and jeroen tromp present an advanced theoretical treatment of global seismology, describing the normalmode, bodywave, and surfacewave methods employed in the determination of the earthsthreedimensional internal structure and the source mechanisms of earthquakes. Jeroen tromp, a perfectly matched layer absorbing boundary condition for the secondorder seismic wave equation. Geophysical journal international, volume 154, issue 1, july 2003. Dahlen is professor of geophysics in the department of geosciences at princeton university.
Currently, the team is focused on imaging the entire globe from the surface to the coremantle boundary, a. Observations and suggested mechanisms for generation of lowfrequency seismic anomalies. The marchapril issue of geophysics contains 48 papers, including two case histories from china. Mapping tectonic deformation in the crust and upper. The januaryfebruary issue of geophysics contains 60 papers, including several case studies from the north sea, canada, and taiwan, among others. Simulation of anisotropic wave propagation based upon a spectral element method dimitri komatitsch. The method incorporates surface topography, attenuation and anisotropy, and accurately represents surface waves. Publications department of physics university of toronto. Manuscript received by the editor january 25, 1999. Cubit and seismic wave propagation based upon the spectral.
Borehole geophysics velocityattenuation model from checkshot drift trends in north sea well data andrew j. Simulation of anisotropic wave propagation based upon a. Both earth and planetary scientists alike should embrace this new frontier of geophysics. A case study of the longmaxiwufeng shale in the fuling gas field, sichuan basin. Adam dziewonski ppt presentation video 3 body wave travel times transmitted, reflected, differential. The januaryfebruary issue of geophysics contains 60 papers. Seismic tomography, adjoint methods, time reversal and banana. We use a version of source encoding to facilitate the calculation of the gradient of a misfit function independent of the number of sources or receive. Theoretical global seismology princeton university press. These free oscillations of the earth and the related propagating body and surface waves are routinely detected at broadband seismographic stations around the world. Prestress refers to earths state of stress prior to an earthquake, whereas induced stress refers to an additional stress. Records of permission for figures 15, 19 and 20 emails to.
Lecture notes essentials of geophysics earth, atmospheric. Near realtime simulations of global cmt earthquakes. Unstructured hexahedral mesh generation is a critical part of the modeling process in the spectralelement method sem. By continuing to browse this site you agree to us using cookies as described in.
Jeroen tromp is professor of geophysics in the department of earth and planetary sciences at harvard university. I noticed that you were involved in this project also with a numerical methods chapter. We have presented a detailed introduction to the spectral element method for 3d seismic wave propagation. Fingerprint dive into the research topics where jeroen tromp is active. Dahlen and jeroen tromp present an advanced theoretical treatment of global seismology, describing the normalmode, bodywave, and surfacewave methods employed in the determination of the earths threedimensional internal structure and the source mechanisms of earthquakes. Introduction to the spectral element method for three. Examples from the johan sverdrup field, central north sea norwegian sector. Guy masters pdf presentation video 4 free oscillations. The 20 beno gutenberg medal is awarded to jeroen tromp for his fundamental contributions in seismology and in geophysics, as well as for his vision and drive in making numerical wave field calculations and adjoint calculations available to all. In global seismology, the effects of a nonhydrostatic prestress on seismic wave speeds may be accommodated as follows. Tromp is a professor of geosciences and applied and. Bruce banerdt, jpl sami asmar, jpl don banfield, cornell lapo boschi, eth ulrich christensen, mps veronique dehant, rob rise pi.
Dahlen and jeroen tromp princeton university press, princeton, new jersey, 1998 by thorne lay seismology involves the analysis of vibrations of the earth excited by a variety of natural and humaninduced sources of energy release. Jan 23, 2019 in a previous article, tromp and trampert considered the effects of induced stress on seismic wave propagation based on a continuum mechanics theory motivated by the accommodation of prestress in global seismology. Geophysical journal international 9 3, 806822, 1999. Depositional impact on the elastic characteristics of the organic shale reservoir and its seismic application. Free geophysics books download ebooks online textbooks. Carl tape, qinya liu and jeroen tromp, geophysical journal international, 168. Macelwane medal at the agu fall meeting honors ceremony, which was held on december 17, 2000 in san francisco, california. We have benchmarked the method against a discrete wavenumberreflectivity method for layercake models. Adjoint tomography of the southern california crust, carl tape, qinya liu, alessia maggi, and jeroen tromp, science, no. Impact of topography on earthquake static slip inversions. The research group is currently addressing imaging problems in exploration geophysics, regional and global seismology, and helioseismology. Tromp is a professor of geosciences and applied and computational mathematics, and the blair professor of geology at princeton university.
Toroidal splitting observations from the great 1994. The resulting model involved 16 tomographic iterations, which required 6800 wavefield simulations and a total of 0. Using advanced modeling and simulation, seismic data generated by earthquakes, and one of the worlds fastest supercomputers, a team led by jeroen tromp of princeton university is creating a detailed 3d picture of earths interior. Tromp, 2012, 3d shear attenuation structure of the european upper mantle based on adjoint tomography, agu, fall meeting abstract, s34b05. Bill folkner, jpl domenico giardini, eth walter goetz, mps matt golombek, jpl matthias grott, dlr troy hudson, jpl catherine. The 5 chapters presented here started off as a set of rough lecture notes and are updated every year. Mapping tectonic deformation in the crust and upper mantle. Simultion of anisotropic wave propogation based upon a. Request pdf seismic tomography, adjoint methods, time reversal and. Seismic tomography of the southern california crust based on spectralelement and adjoint methods, carl tape, qinya liu, alessia maggi and jeroen tromp, gji, 180, 433462 2010. Harvard university, department of earth and planetary sciences, hoffman bldg. Simons research groups as a postdoctoral research associate in february 2020.
Aug 21, 2009 using an inversion strategy based on adjoint methods, we developed a threedimensional seismological model of the southern california crust. Aug 23, 20 the preferential alignment of mineral grains as a result of flow direction can polarize seismic waves traveling through earths interior, based on velocity and direction. Jeroen tromp, princeton tim van zoest, dlr renee weber, msfc mark wieczorek, ipgp pi. Jeroen tromp, etienne bachmann, source encoding for adjoint tomography, geophysical journal international, volume 218, issue 3, september 2019, pages 20192044. Adjoint tomography of the southern california crust science. Measurements and global models of surface wave propagation. Multiparameter adjoint tomography of the crust and upper.
Jeroen tromp department of geosciences princeton university, nj. Gravimetry, newtons law of gravitation, gravity effect of selected bodies, magnetometry, magnetism of rocks and minerals, magnetic measurements for an archaeological prospection, geoelectrical methods, resistivities of. Gridded twoway 1st edition by and jeroen tromp edited by johan o. He comes from the california institute of technology, where he was the director of the seismological laboratory and mcmillan professor of geophysics. Gravimetry, newtons law of gravitation, gravity effect of selected bodies, magnetometry, magnetism of rocks and minerals, magnetic measurements for an archaeological prospection, geoelectrical methods. The medal recognizes significant contributions to the geophysical sciences by a young scientist of outstanding ability. In this comprehensive treatise, dahlen and tromp present an uptodate and advanced theoretical treatment of global seismology, describing the normalmode. Hejun zhu, dimitri komatitsch and jeroen tromp, radial anisotropy of the north american upper mantle based on adjoint tomography with usarray, geophysical journal international, 10. Jeroen tromp blair professor of geology and professor of applied and computational mathematics, princeton verified email at princeton. Jeroen tromps research works princeton university, new. Hom nath gharti, dimitri komatitsch, volker oye, roland martin and jeroen tromp 25 april 2012 international journal for numerical methods in engineering, vol. About cookies, including instructions on how to turn off cookies if you wish to do so. Tromp, 2015, seismic structure of the european crust and upper mantle based on adjoint tomography, geophys.
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