Goos–Hänchen induced normal moveout correction for wide angle refections

• Autorzy: Liu Xiaobo , Liu Fuping , Chen Jingyi , Bao Yifei

Identyfikatory

DOI

10.1007/s11600-020-00412-5

• Języki publikacji: EN

Abstrakty

EN

The Goos–Hänchen (GH) lateral shift has been theoretically simulated and observed in lab. GH lateral shift introduces additional traveltime and distance when the incidence angles are larger than the critical angle. For seismic wave, this GH shift is caused by the total refection of an incident beam of P-wave from low to high impedance medium at near and post-critical angles. Because of its large infuences on traveltime and lateral shift displacement, the GH shift should be corrected in normal moveout (NMO) correction for wide-angle refections in seismic data processing. In this paper, we derive the partial derivatives of refection coefcients (PP- and PSV-wave) with respect to circular frequency using the Zoeppritz equations. Then, the delay time and NMO correction term with the behavior of GH lateral shift is derived. The characteristics of delay time and GH induced time diferences are analyzed. The results show that this GH shift could be either positive or negative and the delay on time has large infuences on seismic refections when the incidence angles are larger than the critical angles. The efciency of GH induced NMO correction is tested using synthetic seismic data. The GH induced NMO correction should be done for wide-angle refections during the progress of seismic data processing.

Słowa kluczowe

EN

delay time; normal moveout correction; wide-angle refection; Goos–Hänchen shift

PL

czas zwłoki; normalna korekta ruchu; odbicie szerokokątne

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2020
• Tom: Vol. 68, no. 2
• Strony: 413--423
• Opis fizyczny: Bibliogr. 36 poz.

Twórcy

autor

Liu Xiaobo

• School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China

autor

Liu Fuping

• Beijing Institute of Graphic Communication, Beijing 102600, China

autor

Chen Jingyi

• Seismic Anisotropy Group, Department of Geosciences, The University of Tulsa, Tulsa, OK 74104, USA

autor

Bao Yifei

• Seismic Anisotropy Group, Department of Geosciences, The University of Tulsa, Tulsa, OK 74104, USA

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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)