AGS SPIA v2025.1: Ground-based TEM & VES Data Processing Software

SPIA v2025.1 is the latest version of Aarhus GeoSoftware's specialized geophysical software for processing and inverting ground-based Time-domain Electromagnetic (TEM) and Vertical Electrical Sounding (VES) data .

Key New Features in v2025.1

Enhanced 2D Section Workflow

• Synced GIS Integration: Work in 2D Section while SPIA remains open with synchronized model selections and GIS map integration

• Bulk Editing: Manage gates or models in bulk across multiple datasets

• Topography Support: Add topography to multiple SPIA nodes directly in Workbench

• Export Enhancements: Export to XYZ with gate times, units, and station/model names included; export full panels with color scales

Inversion Options

• Smooth-only or Smooth + Layered: Choose between smooth-only or smooth plus layered inversions

• Resistivity, Cole-Cole, MPA: Supports multiple inversion methods for TEM data affected by IP effects

Bentley CONNECTION Integration

• Unified Login: Users with Bentley accounts now sign in using the CONNECTION Client

Core Capabilities

TEM Data Processing

• Inversion Engine: Incorporates the fast AarhusInv inversion code

• IP Effects Handling: Resistivity, Cole-Cole, and Maximum Phase Angle (MPA) inversions for TEM data affected by induced polarization

• Visualization: Plot data in raw dB/dt, stacked dB/dt, or apparent resistivity units