Haipeng Li

Stanford University | SU · Department of Geophysics

In order to effectively suppress the spurious reflections from the truncated boundaries in seismic numerical modeling, various perfectly matched layer (PML) absorbing boundary conditions have been developed in the past decades. The multi-axial perfectly matched layer (M-PML) attenuates seismic waves in the PML domain depending on the wave propagati...

Ambient noise tomography (ANT) has become a routine method to image shear‐wave velocity variations at different scales. However, ANT can only resolve smooth velocity variations and cannot give high‐resolution images of the subsurface discontinuities. Here we propose a novel Transmitted Surface Wave Reverse Time Migration (TSW‐RTM) method to directl...

We present an application of Full-waveform Tomography (FWT) on a 2-D deep seismic profiling dataset to characterize the shallow crustal structures of the TanLu Fault Zone (TLFZ) acting as the tectonic boundary between the South and North China Plates. The raw data preprocessing workflow is presented in detail to make preparation for FWT. Based on t...

Seismic imaging is crucial in investigating Earth’s interior structures and understanding its tectonics and evolution. The reflected, converted, and scattered waves have attracted considerable attention in the previous studies, whereas the directly transmitted waves are less used in seismic imaging. In this study, we present a novel passive source...

The Tanlu Fault Zone (TFZ) is considered as a suture of the intra-continental collision between the South and North China plates, and it has attracted considerable geological, geochemistry, and geophysical investigations. However, its deep structures still lack clear delineation and the related tectonic processes are still debated without a clear c...

The analysis of urban seismic sources offers valuable insights into urban environments, including seismic hazards, infrastructure conditions, human mobility, and cultural life. Yet, accurate detection and localization of seismic sources at the urban scale with conventional seismic sensing networks is unavailable due to the prohibitive costs of ultr...

Continuous seismic monitoring of the near-surface structure is crucial for urban infrastructure safety, aiding in the detection of sinkholes, subsidence, and other seismic hazards. Utilizing existing telecommunication optical fibers as Distributed Acoustic Sensing (DAS) systems offers a cost-effective method for creating dense seismic arrays in urb...

The Tanlu Fault Zone (TFZ) is considered as a suture of the intra‐continental collision between the South and North China plates, and it has attracted considerable geological, geochemistry, and geophysical investigations. However, its deep structures still lack clear delineation and the related tectonic processes are still debated without a clear c...

We propose a novel ambient noise Transmitted Surface Wave Reverse Time Migration (TSW-RTM) method to image interfaces of fault zones where the crystalline basement rocks truncate against the surrounding sediments. The source and receiver wavefields are propagated in the sediment flood velocity and crystalline flood velocity, respectively. The migra...

In marine seismic exploration, ocean-bottom cable techniques accurately record the multicomponent seismic wavefield; however, the seismic wave propagation in fluid–solid media cannot be simulated by a single wave equation. In addition, when the seabed interface is irregular, traditional finite-difference schemes cannot simulate the seismic wave pro...