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Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Daily Overview

Session

📌Poster Session and Networking Aperitivo 🍷
Location: Lower Lobby

Presentation 19

Using Sentinel-1 Coherence Change as an Indicator of Forest Disturbances

Vít Ježek¹, David Moravec^1,2

1: Czech University of Life Sciences Prague; 2: TUD | Dresden University of Technology

Forest disturbances such as fires, windthrows, and bark beetle outbreaks have major impacts on forest condition and ecosystem functioning. Changes in canopy structure and dielectric properties resulting from these events can serve as valuable indicators for studying disturbance processes using radar remote sensing.

Radar interferometric coherence is particularly sensitive to temporal and geometric variations in scattering mechanisms. This study investigates how the temporal and perpendicular baselines of image pairs contribute to coherence changes, compared to those caused by actual forest disturbances. The analysis focuses on Central European forests affected by various disturbance types and is based on Sentinel-1 SLC data, from which coherence maps are derived for a range of baseline combinations. Coherence dynamics are evaluated over disturbed and reference forest stands to separate baseline-related effects from disturbance-induced changes.

Preliminary statistical analyses of coherence changes across different baseline configurations provide a quantitative assessment of the relative influence of geometric and temporal decorrelation. The results help identify optimal baseline ranges for reliable detection of forest disturbances and support improved interpretation of coherence changes in operational forest monitoring.