Three dimensional seismic velocity anomalies in the lithosphere
Article Sidebar
Main Article Content
Abstract
This paper discusses cruxes of the method for inverting the P-time residual data introduced by Aki et al. (1976a) and summarizes the results obtained by the method on 3-dimensional seismic velocity anomalies in the lithosphere under several seismic arrays around the world. The velocity anomalies at shallow depths correlate well with geologic features in young, active areas such as California, Hawaii, and Yellowstone, but the correlation is not apparent in old, stable areas such as eastern Montana and Norway. Significant small scale (20~50 km) lateral inhomogeneity is observed everywhere to the depth of 100~150 km, with the minimum estimate of root mean square fluctuation about 3%. The lithosphere-asthenosphere boundary seems to manifest itself as change in the roughness of anomaly pattern or in the trend of anomaly.
ARK: https://n2t.net/ark:/88439/y086778
Permalink: https://geophysicsjournal.com/article/218
Article Details
Authors who publish with this journal as of Vol. 63 agree to the following terms:
a. Authors share the copyright with this journal in equal parts (50% to the journal, 50% to the lead author), and grant the journal right of first publication, with the work after publication simultaneously licensed under Creative Commons Attribution License CC BY-NC-ND 4.0 that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
b. Authors may enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal, and a reference to this copyright notice.
c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) during the submission process, as this can lead to productive exchanges and earlier and greater citation of published work and better sales of the copyright.
Author Self-archiving
Authors retain copyright and grant the Journal of Geophysics right of first publication, with the work three years after publication simultaneously licensed under the Creative Commons BY-NC-ND 4.0 License that allows others to share the work (with an acknowledgment of the work's authorship and initial publication in this journal), except for commercial purposes and for creating derivatives.
Authors can enter into separate, additional, but non-commercial contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository, but not publish it in a book), with an acknowledgment of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) before and during the submission process, as that can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
Additional Notes
This journal is one of a handful of scholarly journals that publish original scientific works under CC BY-NC-ND 4.0 - the only Creative Commons license affording the authors' intellectual property absolute worldwide protection.
Journal of Geophysics is published under the scholar-publishers model, meaning authors do not surrender their copyright to us. Instead, and unlike corporate publishers like Elsevier or Springer Nature that resell copyright to third-parties for up to $80,000 (per paper, per transaction!), the Journal of Geophysics authors share copyright equally with this journal.
Therefore, all the proceeds from reselling copyright to third parties get shared to equal parts (50% to the journal, 50% to the lead author). Under the Berne Convention, this protection is an inheritable right that lasts for as long as the rightsholder lives + 50 years.
By submitting to this journal, the lead author, on behalf of all co-authors, grants permission to this journal to represent all co-authors in negotiating copyright sales and collecting proceeds. The lead author should negotiate with his/her co-authors the modalities of distributing the lead author's portion of the proceeds. Usually, this is per pre-agreed percentage of each co-author's contribution to creating the copyrighted work. (more...)
References
Aki, K., Christoffersson, A., Husebye, E.S. (1976b) Three-dimensional seismic structure of the lithosphere under Montana LASA. Bull. Seisrn. Soc. Arn. 66:501-524
Berteussen, K.A. (1974) NORSAR location calibrations and time delay corrections, NTNF/NORSAR. Sci. Rep. No. 2-73/74
Chiburis, E.F., Ahner, R.O. (1973) LASA regional travel-time corrections and associated nodes. SDAC Technical Report No. 73-76, AD 774458 Teledyne, Geotech, Alexandria, Virginia
Eaton, G.P., Christiansen, R.C., Iyer, M., Pitt, A.M., Mabey, D.R., Blank, H., Zietz, I., Gettings, M.E. (1975) Magma beneath Yellowstone National Park. Science 188, No. 4190:787-796
Ellsworth, W.L., Koyanagi, R.Y. (1976) Three-dimensional crust and mantle structure of Kilauea volcano, Hawaii. Submitted to J. Geophys. Res.
Franklin, J.N. (1970) Well-posed stochastic extension on ill-posed linear problems. J. Math. Anal. Appl. 31:682-716
Husebye, E.S., Christoffersson, A., Aki, K., Powell, C. (1976) Preliminary results on the 3-dirnensional seismic structure of the lithosphere under the USGS Central California Seismic Array. Geophys. J. R. Astr. Soc. 46:319-340
Iyer, H.M. (1976) Personal communication.
Kind, R. (1972) Residuals and velocities of P. waves recorded by the San Andreas Seismograph network. Bull. Seisrn. Soc. Arn. 62:85-100
Lancsoz, C. (1961) Linear differential operators, pp. 564. Van Nostrand, London-New York
Zandt, G., Aki, K. (1976) Lateral velocity anomalies associated with the San Andreas fault, central California. Trans. Arn. Geophys. Union, EOS 57:283