Watch the Dallas Symposium LIVE, and fundraiser auction
Ticket proceeds support mindat.org! - click here...
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Bortfeld, R., Kemper, M. (1991) Geometrical ray theory: Line foci and point foci in the anterior surface of seismic systems (second‐order approximation of the traveltimes) Geophysics, 56 (6) 806-811 doi:10.1190/1.1443098

Advanced
   -   Only viewable:
Reference TypeJournal (article/letter/editorial)
TitleGeometrical ray theory: Line foci and point foci in the anterior surface of seismic systems (second‐order approximation of the traveltimes)
JournalGeophysics
AuthorsBortfeld, R.Author
Kemper, M.Author
Year1991 (June)Volume56
Issue6
PublisherSociety of Exploration Geophysicists
DOIdoi:10.1190/1.1443098Search in ResearchGate
Generate Citation Formats
Mindat Ref. ID898622Long-form Identifiermindat:1:5:898622:5
GUID0
Full ReferenceBortfeld, R., Kemper, M. (1991) Geometrical ray theory: Line foci and point foci in the anterior surface of seismic systems (second‐order approximation of the traveltimes) Geophysics, 56 (6) 806-811 doi:10.1190/1.1443098
Plain TextBortfeld, R., Kemper, M. (1991) Geometrical ray theory: Line foci and point foci in the anterior surface of seismic systems (second‐order approximation of the traveltimes) Geophysics, 56 (6) 806-811 doi:10.1190/1.1443098
In(1991, June) Geophysics Vol. 56 (6) Society of Exploration Geophysicists

See Also

These are possibly similar items as determined by title/reference text matching only.

(1991) To: “Geometrical ray theory: Line foci and point foci in the anterior surface of seismic systems (second‐order approximation of the traveltimes)” by R. Bortfeld and M. Kemper (GEOPHYSICS, 56, 806–811, June 1991) Geophysics, 56 (11) 1923 doi:10.1190/1.1443003
Bortfeld, R. (1989) Geometrical ray theory: Rays and traveltimes in seismic systems (second‐order approximations of the traveltimes) Geophysics, 54 (3) 342-349 doi:10.1190/1.1442659
Sun, Jianguo (1994) Geometrical ray theory: Edge‐diffracted rays and their traveltimes (second‐order approximation of the traveltimes) Geophysics, 59 (1) 148-155 doi:10.1190/1.1443526
Enescu, Dumitru, Georgescu, Anca (1976) Contributions to the spectral theory of seismic sources and determination of the parameters of earthquake foci. Pure and Applied Geophysics PAGEOPH, 114. 701-710 doi:10.1007/bf00875662
(1843) V. On the foci and Directrices of the line of the second order. The London, Edinburgh, And Dublin Philosophical Magazine And Journal Of Science, S. 3 Vol. 22 (142) London. 25-31 doi:10.1080/14786444308621628
van Trier, J., Symes, W. W. (1991) Upwind finite‐difference calculation of traveltimes. Geophysics, 56 (6) 812-821 doi:10.1190/1.1443099
Jocker, Jeroen, Spetzler, Jesper, Smeulders, David, Trampert, Jeannot (2006) Validation of first-order diffraction theory for the traveltimes and amplitudes of propagating waves. Geophysics, 71 (6) doi:10.1190/1.2358412
Aksenov, V., Lokajiček, T. (1997) Influence of Nonlinear Processes in Seismic Foci on Released Energy. Pure and Applied Geophysics, 149 (2) 337-355 doi:10.1007/s000240050029
Spitz, S. (1991) Seismic trace interpolation in theF-Xdomain. Geophysics, 56 (6) 785-794 doi:10.1190/1.1443096
Spies, Brian R. (1991) The effectiveness of journals in exploration geophysics. Geophysics, 56 (6) 844-858 doi:10.1190/1.1443102
Nichols, Dave E. (1996) Maximum energy traveltimes calculated in the seismic frequency band. Geophysics, 61 (1) 253-263 doi:10.1190/1.1443946
 
and/or  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: August 18, 2025 03:58:44
Go to top of page