Institute of Geology and Geophysics

Sodium Lidar observed multiple sodium layer structures and their dynamical coupling mechanism

Abstract. On the night of 13 June 2013, the University of Science and Technology of China (USTC) sodium lidar observed multiple sporadic sodium layers (SSLs) and enhanced sodium patterns (ESPs) over Hefei, China (31.8°N, 117.3°E). These structures appeared at different times, col...

Spatial Heterogeneity of Global Organic Matter Accumulation During the PETM

Abstract The Paleocene–Eocene Thermal Maximum (PETM) was an abrupt global warming event triggered by a massive release of isotopically light carbon. Rapid recovery from the PETM has been attributed to enhanced burial of organic matter (OM). However, the mechanisms and spatial dis...

Harmonic reverse time migration

Abstract In subsurface regions containing gas or hydrocarbons, porous rocks, fluid-saturated zones, and fracture networks, seismic waves may propagate nonlinearly, resulting in harmonic generation, waveform distortion, and even the formation of shocks. To address these acoustic n...

Hybrid Physics-Data-Driven Framework for Blind Acoustic Impedance Inversion

Abstract Conventional acoustic impedance inversion methods have long faced technical bottlenecks such as inaccurate wavelet estimation and strong dependence on initial models. Although existing deep learning approaches can partially alleviate these problems, they often compromise...