Institute of Geodesy and Geophysics

Numerical analysis of the fluid flow and heat exchange characteristics in a low-temperature and high-permeability reservoir of a heat storage and heating system

It is a promising energy strategy to utilize a shallow, low-temperature geothermal reservoir for seasonal heat storage and heating, with the potential to meet winter heating needs in decentralized rural buildings. The fluid flow and heat exchange in the reservoir govern the therm...

Incorporating Wave Physical Priors into Diffusion Models: A Novel Approach to Seismic Resolution Enhancement

Seismic resolution enhancement remains a critical challenge in exploration geophysics, particularly when processing field data characterized by limited bandwidth, strong noise, and insufficient labeled training samples. Existing deep learning methods typically rely on supervised...

Analysis of Tonga eruption-induced disturbances in the upper thermosphere based on atmospheric drag accelerations from LEO satellites

Abstract The violent eruption of the Tonga volcano on 15 January 2022 triggered significant disturbances in the atmosphere and ionosphere. However, limited observational capabilities have persistently hindered the characterization of eruption-induced neutral density disturbances...

Pressure-induced phase stability and metallization of monoclinic FeO from first-principles calculations

The phase relations of FeO under high-pressure and high-temperature (high P–T) conditions exhibit considerable complexity, hindering understanding of the physicochemical properties of the Earth’s deep interior. In particular, recent experimental studies have shown that FeO can st...

Odometry and Mapping for Complex Environment Perception Under Partial-View Sensing

Dense partial-view LiDAR observations are attractive for outdoor perception, but limited overlap and viewpoint sensitivity make odometry and mapping less reliable than with spinning LiDARs. Many recent algorithms for this sensing regime are built as LiDAR-inertial odometry framew...

Year-Round High-Resolution Sea Ice Freeboard Retrieval Using ICESat-2 ATL03 Photon Data

Abstract. Arctic sea ice freeboard is critical for estimating ice thickness and characterizing surface morphology, yet it remains poorly constrained, especially during the melt season due to limitations in conventional altimetry products. The ICESat-2 ATL07 product retrieves surf...

Meta‐Learning‐Enhanced Implicit Full Waveform Inversion

ABSTRACT Implicit full waveform inversion (IFWI) introduces implicit neural representations to parameterize the subsurface velocity model as a continuous function of spatial coordinates, which alleviates the dependence on the initial model and improves inversion flexibility. Howe...

Behaviour characteristics identification of inbound tourists in Shandong Province from three perspectives of space-network-emotion

The research explores the behavioural characteristics of inbound tourists from three different perspectives of space, network and emotion, and compensates for the limitations of current single-perspective analysis. Methodologically, the complex network analysis method is integrat...