Seismic signal de noising using time–frequency peak fltering based on empirical wavelet transform

• Autorzy: Liu Naihao , Yang Yang , Li Zhen , Gao Jinghuai , Jiang Xiudi , Pan Shulin

Identyfikatory

DOI

10.1007/s11600-020-00413-4

• Języki publikacji: EN

Abstrakty

EN

Seismic noise suppression plays an important role in seismic data processing and interpretation. The time–frequency peak fltering (TFPF) is a classical method for seismic noise attenuation defned in the time–frequency domain. Nevertheless, we obtain serious attenuation for the seismic signal amplitude when choosing a wide window of TFPF. It is an unsolved issue for TFPF to select a suitable window width for attenuating seismic noise efectively and preserving valid signal amplitude efectively. To overcome the disadvantage of TFPF, we introduce the empirical wavelet transform (EWT) to improve the fltered results produced by TFPF. We name the proposed seismic de-noising workfow as the TFPF based on EWT (TFPFEWT). We frst introduce EWT to decompose a non-stationary seismic trace into a couple of intrinsic mode functions (IMFs) with diferent dominant frequencies. Then, we apply TFPF to the chosen IMFs for noise attenuation, which are selected by using a defned reference formula. At last, we add the fltered IMFs and the unprocessed ones to obtain the fltered seismic signal. Synthetic data and 3D feld data examples prove the validity and efectiveness of the TFPF-EWT for both attenuating random noise and preserving valid seismic amplitude.

Słowa kluczowe

EN

seismic signal de-noising; empirical wavelet transform; EWT; preserved valid amplitude; time–frequency peak filtering; TFPF

PL

odszumianie sygnału sejsmicznego; empiryczna transformata falkowa; EWT

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2020
• Tom: Vol. 68, no. 2
• Strony: 425--434
• Opis fizyczny: Bibliogr. 48 poz.

Twórcy

autor

Liu Naihao

• School of Information and Communications Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
• National Engineering Laboratory for Ofshore Oil Exploration, Xi’an 710049, Shaanxi, China

autor

Yang Yang

• School of Information and Communications Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
• National Engineering Laboratory for Ofshore Oil Exploration, Xi’an 710049, Shaanxi, China

autor

Li Zhen

• School of Information and Communications Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
• National Engineering Laboratory for Ofshore Oil Exploration, Xi’an 710049, Shaanxi, China

autor

Gao Jinghuai

• School of Information and Communications Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
• National Engineering Laboratory for Ofshore Oil Exploration, Xi’an 710049, Shaanxi, China

autor

Jiang Xiudi

• Geophysics Key Lab, Technology R&D Center, Research Institute of China National Ofshore Oil Corporation (CNOOC), and National Engineering Laboratory for Ofshore Oil Exploration, Beijing 10028, China

autor

Pan Shulin

• School of Earth Science and Technology, Southwest Petroleum University, Chengdu 610500, Sichuan, 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)