2D multi parameter waveform inversion of land refection seismic data obtained from the particle motion response from the vertical geophone

• Autorzy: Li Qingyang , Wu Guochen

Identyfikatory

DOI

10.1007/s11600-020-00403-6

• Języki publikacji: EN

Abstrakty

EN

Onshore seismic exploration analyzes seismic wave propagation in elastic media, which includes the conversion between P- and S-waves. The development of multi-wave and multi-component seismic exploration methods provides data that enable onshore elastic wave full-waveform inversion. However, most data sets of onshore exploration are single component obtained from the particle-motion response from the vertical geophone. When the aiming area has a low-velocity zone, the ray path of refected wave that propagates to the detector is nearly perpendicular to the ground surface, so that we call it P-wave data. In this paper, we focus on multi-parameter waveform inversion using P-wave refection seismic data. Although only P-wave data are received, it still contains the converted P-wave information, and the converted P-wave energy gradually increases as the ofset increases. As seismic acquisition technology, observation systems and science develop, the folds and acquisition ofset increase signifcantly, and the seismic data contain important converted P-wave information. In this paper, the frst-order elastic velocity–stress equation is decomposed to obtain the scalar-P-wave equation from which the S-wave velocity is included frstly. Then we present the theoretical framework for onshore multi-parameter full-waveform inversion using P-wave data. In order to explore the inversion potential of the P-wave data (extracting the S-wave velocity from the converted P-wave information) and accuracy and stability of the P- and S-wave velocity inverted by our method, we carry out numerical tests via diferent inversion strategies, by using the P-wave data regarded as containing converted P-wave information, and get successful results.

Słowa kluczowe

EN

scalar-P-wave equation; P-wave velocity; S-wave velocity; converted P-wave; onshore seismic full-waveform inversion

PL

skalarne równanie falowe; prędkość fali P; prędkość fali S

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2020
• Tom: Vol. 68, no. 2
• Strony: 377--388
• Opis fizyczny: Bibliogr. 37 poz.

Twórcy

autor

Li Qingyang

• School of Geosciences, China University of Petroleum (East China), Qingdao, China
• Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China

autor

Wu Guochen

• School of Geosciences, China University of Petroleum (East China), Qingdao, China
• Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)