HK-Vs3D1.0: High-Resolution 3D S-Wave Velocity Model of Hong Kong's Upper Crust

HK-Vs3D1.0 is the first high-resolution 3D upper crustal S wave velocity model of Hong Kong, covering an 8km by 8km area. Developed at the University of Hong Kong in 2025, it models the subsurface from the surface to a depth of 8 kilometers. The model was derived using ambient noise adjoint tomography applied to data from a portable nodal sensor network.

Use Cases

• Seismic hazard analysis based on the 3D S-wave velocity structure.
• Geological interpretation of subsurface features based on velocity variations.
• Calibrating or validating other geophysical models using the high-resolution 3D model.
• Researching crustal deformation and tectonics using the derived velocity model.

Strengths

• First high-resolution 3D S-wave velocity model for the Hong Kong region.
• Covers a defined 8km by 8km spatial area and a depth range from surface to 8km.
• Developed using a modern ambient noise adjoint tomography method.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The specific data format and file size are unknown, which may affect usability.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

University of Hong Kong, published via Harvard Dataverse.

Collection Method

Derived from ambient noise adjoint tomography using data from a portable nodal sensor network.

Time Range

Model developed in 2025.

Freshness

Last updated 2026-04-16 21:33:39; freshness should be verified.

Geography

Hong Kong, covering an 8km by 8km area.