AuSREM: Australian Seismological Reference Model

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dc.contributor.authorKennett, Brian
dc.contributor.authorSalmon, Michelle
dc.date.accessioned2015-12-10T23:34:47Z
dc.date.issued2012
dc.date.updated2016-02-24T08:53:36Z
dc.description.abstractAlthough Australia has been the subject of a wide range of seismological studies, these have concentrated on specific features of the continent at crustal scales and on the broad-scale features in the mantle. The Australian Seismological Reference Model (AuSREM) is designed to bring together the existing information and provide a synthesis in the form of a 3-D model that can provide the basis for future refinement from more detailed studies. The model is grid based with a 0.5° sampling in latitude and longitude and is designed to be fully interpolable, so that properties can be extracted at any point. The crustal component makes use of prior compilations of sediment thicknesses, with cross-checks against recent reflection profiling, and provides P and S wavespeed distributions through the crust. The primary information for P wavespeed comes from refraction profiles, for S wavespeed from receiver function studies, and we are able to use the results of ambient noise tomography to link the point observations into national coverage. Density values are derived using results from gravity interpretations. AuSREM is able to build on a new map of depth to Moho, which has been created using all available information including Moho picks from over 10 000 km of full crustal profiling across the continent. In the upper mantle, the primary source of information comes from seismic surface wave tomography and a representative model has been developed to capture the features of a range of studies. Body-wave studies and regional tomography provide useful constraints on the relationship between P and S wavespeeds. The mantle model extends beyond the continent and so covers a larger area than for the crust. Below 350 km and in the surrounding area, AuSREM is linked to the S40RTS model. Potential applications of the AuSREM model come through the delineation of major structural features in the crust and mantle, and consequent improvements in, for example, earthquake location within the continent and at the nearby plate boundaries.
dc.identifier.issn0812-0099
dc.identifier.urihttp://hdl.handle.net/1885/69573
dc.publisherBlackwell Publishing Ltd
dc.sourceAustralian Journal of Earth Sciences
dc.subjectKeywords: ambient noise; body wave; crustal structure; mantle structure; Moho; P-wave; S-wave; seismic tomography; surface wave; three-dimensional modeling; Australia Australia; body waves; Crust and mantle structure; surface waves; tomography
dc.titleAuSREM: Australian Seismological Reference Model
dc.typeJournal article
local.bibliographicCitation.issue8
local.bibliographicCitation.lastpage1103
local.bibliographicCitation.startpage1091
local.contributor.affiliationKennett, Brian, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSalmon, Michelle, College of Physical and Mathematical Sciences, ANU
local.contributor.authoremailu8413736@anu.edu.au
local.contributor.authoruidKennett, Brian, u8413736
local.contributor.authoruidSalmon, Michelle, u4016642
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor040407 - Seismology and Seismic Exploration
local.identifier.absfor040313 - Tectonics
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
local.identifier.ariespublicationf5625xPUB2062
local.identifier.citationvolume59
local.identifier.doi10.1080/08120099.2012.736406
local.identifier.scopusID2-s2.0-84871348306
local.identifier.thomsonID000312341800001
local.identifier.uidSubmittedByf5625
local.type.statusPublished Version

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