Targeted forensic reference collection
Definition
A set of soil samples collected specifically for a case, from the geographic area relevant to that investigation. It supplements national survey data with the fine-scale resolution a forensic comparison requires.
Related terms
- Detection limit
- The lowest concentration an analytical method can reliably distinguish from background noise. Data below the detection limit are censored, and combining datasets...
- FOREGS
- Forum of European Geological Surveys. Its geochemical baseline surveyed 845 sites across Europe for around 70 elements in agricultural and residual soil...
- G-BASE
- The BGS Geochemical Baseline Survey of the Environment. Soil and stream-sediment samples collected across Britain at roughly one per 2 km2, analysed...
- Geochemical province
- A geographically coherent region where soils share a distinctive elemental signature attributable to a common bedrock, mineralisation, or depositional history. Knowing which...
- Random forest classifier
- A supervised machine-learning ensemble model that builds multiple decision trees from randomly sampled subsets of training data and features, then aggregates their...
Explained in
- Forensic Geology Reference DatabasesA set of soil samples collected specifically for a case, from the geographic area relevant to that investigation. It supplements national survey data with the...