Open AccessObservations of Short‐Period Seismic Energy from Earthquakes and Inferences about the Seismic Source
Author(s) -
Davies David,
Ziolkowski Anton
Publication year - 1972
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1972.tb02363.x
Subject(s) - seismology , geology , period (music) , remotely triggered earthquakes , seismic noise , seismic energy , seismic wave , geophysics , induced seismicity , seismic gap , physics , acoustics
Summary In this paper we consider the short‐period radiation from earthquakes as recorded at high quality seismic stations. We pay particular attention to the profile of energy release as a function of time. Mantle phases such as P are often unsuitable for this purpose because of lateral heterogeneity, but core reflected phases are frequently much simpler. By comparison with events of known character we are able to estimate duration of short‐period energy radiation from earthquakes. Under certain assumptions, this gives us a maximum dimension D s over which there is significant short‐period energy generated. m b 6 earthquakes with D s as small as 2 km and as large as 50 km are described. It seems possible with an array to examine the energy release pattern of extended earthquakes in some detail.