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Earthquake slip vectors and estimates of present-day plate motionsTwo alternative models for present-day global plate motions are derived from subsets of the NUVEL-1 data in order to investigate the degree to which earthquake slip vectors affect the NUVEL-1 model and to provide estimates of present-day plate velocities that are independent of earthquake slip vectors. The data set used to derive the first model excludes subduction zone slip vectors. The primary purpose of this model is to demonstrate that the 240 subduction zone slip vectors in the NUVEL-1 data set do not greatly affect the plate velocities predicted by NUVEL-1. A data set that excludes all of the 724 earthquake slip vectors used to derive NUVEL-1 is used to derive the second model. This model is suitable as a reference model for kinematic studies that require plate velocity estimates unaffected by earthquake slip vectors. The slip-dependent slip vector bias along transform faults is investigated using the second model, and evidence is sought for biases in slip directions along spreading centers.
Document ID
19930051879
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Demets, Charles
(Wisconsin Univ. Madison, United States)
Date Acquired
August 16, 2013
Publication Date
April 10, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: B4
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
93A35876
Funding Number(s)
CONTRACT_GRANT: NSF EAR-92-05083
Distribution Limits
Public
Copyright
Other

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