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Constraints on lateral variation in upper crustal structure beneath southern New England from dispersion of Rg waves
Author(s) -
Kafka Alan L.,
Dollin Matthew F.
Publication year - 1985
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl012i005p00235
Subject(s) - geology , variation (astronomy) , seismology , dispersion (optics) , geophysics , optics , physics , astrophysics
Group velocity dispersion was determined for Rayleigh waves between periods of 0.5 and 2.0 sec (Rg) recorded from quarry blasts in southern New England. The paths of these surface waves traverse various geologic structures, and distinct dispersion regions have been identified. Normal dispersion was consistently observed in the period range studied, indicating a superficial layer of relatively low velocity (4.1