منابع مشابه
Sir Walter Scott at Iv Mourne University
AMONG STUDENTS OF THE WORKS of Sir Walter Scott there may be an awareness that the University of Melbourne Library is the repository of one of the best collections in the world devoted to the author. But that awareness is limited, since the Library's Scott collection is not catalogued, and to that extent it may fairly be said that the Baillieu Library has within its walls a research resource of...
متن کاملA unified theory of microseisms and hum
Interacting ocean surface waves force water column pressure fluctuations with spectral peaks at the same frequencies of primary microseisms (PM), double-frequency microseisms (DF), and seismic hum. Prior treatment of nonlinear ocean wave interactions has focused on the DF pressure fluctuations which, in the presence of opposing waves, do not decay with depth and hence are dominant in deep water...
متن کاملA year of microseisms in southern California
[1] Microseisms are due to continuous harmonic forcing by ocean waves, whose sources vary in time, frequency, and azimuth. Using frequency-domain array beamforming, this variation is studied using one-year of continuous seismic data from 155 stations in southern California. Detailed analysis of data delineates spatiotemporal variations of sources for the primary and secondary microseisms. Both ...
متن کاملMicroseisms and hum from ocean surface gravity waves
[1] Ocean waves incident on coasts generate seismic surface waves in three frequency bands via three pathways: direct pressure on the seafloor (primary microseisms, PM), standing waves from interaction of incident and reflected waves (double-frequency microseisms, DF), and swell-transformed infragravity wave interactions (the Earth’s seismic hum). Beamforming of USArray seismic data shows that ...
متن کاملScott processes
The Scott process of a relational structure M is the sequence of sets of formulas given by the Scott analysis of M . We present axioms for the class of Scott processes of structures in a relational vocabulary τ , and use them to give a proof of an unpublished theorem of Leo Harrington from the 1970’s, showing that a counterexample to Vaught’s Conjecture has models of cofinally many Scott ranks ...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 1960
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.1960.tb01713.x