Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 857881

Simultaneous use of multiple seismic array


Stipčević, Josip; Kennett, Brian.L.N.; Tkalčić, Hrvoje
Simultaneous use of multiple seismic array // Geophysical journal international, 209 (2017), 2; 770-783 doi:10.1093/gji/ggx027 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 857881 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Simultaneous use of multiple seismic array

Autori
Stipčević, Josip ; Kennett, Brian.L.N. ; Tkalčić, Hrvoje

Izvornik
Geophysical journal international (0956-540X) 209 (2017), 2; 770-783

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Seismic monitoring ; earthquake source observations ; body waves ; spatial analysis

Sažetak
Seismic arrays provide an important means of enhancing seismic signals and determining the directional properties of the wavefield by beam- forming. When multiple arrays are to be used together, the viewpoint needs to be modified from looking outwards from each array to focusing on a specific target area and so constraining the portions of the waveforms to be analysed. Beam- forming for each array is supplemented by the relative time constraints for propagation from the target to each array to provide tight spatial control. Simultaneous multiple array analysis provides a powerful tool for source characterisation, and for structural analysis of scatterers as virtual sources. The multiple array concept allows us to illuminate a specific point in the Earth from many different directions and thus map detailed patterns of heterogeneity in the Earth. Furthermore, illumination of the structure from multiple directions using data from the same event minimizes source effects to provide clearer images of heterogeneity. The analysis is based on a similar concept to the back-projection technique, where a part of the seismic wavetrain is mapped to a specific point in space by ray-tracing. In contrast to classic back-projection where the incoming energy is mapped onto a horizontal plane with limited vertical resolution, the multi-array method controls depth response by combining relative time constraints between the arrays and conventional beam-forming. We illustrate this approach with application to two earthquakes at moderate depth. The results show that the use of simultaneous multiple arrays can provide improvement both in signal quality and resolution, with the additional benefit of being able to accurately locate the source of the incoming energy and map large areas with only a limited number of such arrays.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Geofizika



POVEZANOST RADA


Projekti:
HRZZ-IP-2014-09-9666 - Velebit od vrha do dna - multidisciplinanro istraživanje seizmoloških značajki i tektonike područja Velebita (VELEBIT) (Herak, Marijan, HRZZ - 2014-09) ( POIROT)

Ustanove:
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Hrvoje Tkalčić (autor)

Citiraj ovu publikaciju

Stipčević, Josip; Kennett, Brian.L.N.; Tkalčić, Hrvoje
Simultaneous use of multiple seismic array // Geophysical journal international, 209 (2017), 2; 770-783 doi:10.1093/gji/ggx027 (međunarodna recenzija, članak, znanstveni)
Stipčević, J., Kennett, B. & Tkalčić, H. (2017) Simultaneous use of multiple seismic array. Geophysical journal international, 209 (2), 770-783 doi:10.1093/gji/ggx027.
@article{article, year = {2017}, pages = {770-783}, DOI = {10.1093/gji/ggx027}, keywords = {Seismic monitoring, earthquake source observations, body waves, spatial analysis}, journal = {Geophysical journal international}, doi = {10.1093/gji/ggx027}, volume = {209}, number = {2}, issn = {0956-540X}, title = {Simultaneous use of multiple seismic array}, keyword = {Seismic monitoring, earthquake source observations, body waves, spatial analysis} }
@article{article, year = {2017}, pages = {770-783}, DOI = {10.1093/gji/ggx027}, keywords = {Seismic monitoring, earthquake source observations, body waves, spatial analysis}, journal = {Geophysical journal international}, doi = {10.1093/gji/ggx027}, volume = {209}, number = {2}, issn = {0956-540X}, title = {Simultaneous use of multiple seismic array}, keyword = {Seismic monitoring, earthquake source observations, body waves, spatial analysis} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati





    Contrast
    Increase Font
    Decrease Font
    Dyslexic Font