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Travel times and station corrections for P waves at teleseismic distances

Dziewonski, Adam M. and Anderson, Don L. (1983) Travel times and station corrections for P waves at teleseismic distances. Journal of Geophysical Research B, 88 (B4). pp. 3295-3314. ISSN 0148-0227. https://resolver.caltech.edu/CaltechAUTHORS:20140508-112758469

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Abstract

Approximately 3300 shallow focus earthquakes and 1000 seismic stations have been used in a study of P wave travel times and station residuals, including azimuthal effects. The events were selected from a catalog containing 160,000 earthquakes, and those having uniform distance and azimuthal coverage were systematically relocated and used to refine P wave travel times and station corrections. Station corrections are provided for 994 seismic stations. The station corrections involve three terms: the static effect and two cosine terms with appropriate phase shifts. They exhibit general consistency over broad geographic areas and, where coverage is dense, often show abrupt changes from one geological province to another. The cos 2θ terms appear to be due to upper mantle anisotropy, and they correlate with the stress direction in the crust.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/JB088iB04p03295DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/JB088iB04p03295/abstractPublisherArticle
Additional Information:© 1983 American Geophysical Union. Manuscript Accepted: 22 OCT 1982; Manuscript Received: 14 JUN 1982. It is a great pleasure for us to dedicate this paper to Anton Hales who, in large measure, is responsible for its existence. Anton's dedication to the understanding of all of the uncertainties and subtleties in the travel time and location problems was a constant source of inspiration to us, and his personal advice and vast experience were tapped on many occasions. His studies with John Cleary provided many insights which we have profited from. Alan Douglas provided us with a detailed critique of our earlier travel time studies and convinced us that relocation of many events was a prerequisite for further progress in this field. This research was supported by National Science Foundation grants EAR81-20944 (Harvard) and EAR77-14675 (Caltech). Contribution 3801 of the Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125.
Funders:
Funding AgencyGrant Number
NSFEAR81-20944
NSFEAR77-14675
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences3801
Issue or Number:B4
Record Number:CaltechAUTHORS:20140508-112758469
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140508-112758469
Official Citation:Dziewonski, A. M., and D. L. Anderson (1983), Travel times and station corrections for P waves at teleseismic distances, J. Geophys. Res., 88(B4), 3295–3314, doi:10.1029/JB088iB04p03295.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45606
Collection:CaltechAUTHORS
Deposited By: Aucoeur Ngo
Deposited On:08 May 2014 18:36
Last Modified:03 Oct 2019 06:33

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