{"artifact_id":"L1-423","layer":"L1","title":"Contaminant Source Identification","domain":"Environmental Science","sub_domain":"Inverse dispersion","physics_fingerprint":{"L_DAG":4.0,"title":"Contaminant Source Identification","domain":"Environmental Science","carrier":"N/A","primitives":["O.iter","O.bayesian.mcmc_source","S.green_function.transport"],"sub_domain":"Inverse dispersion","noise_model":"lognormal","problem_class":"nonlinear_inverse","solution_space":"source_location_strength_time","difficulty_delta":5,"integration_axis":"spatiotemporal_domain","sensing_mechanism":"environmental_concentration_inversion"},"observable_profile":{"metric":"source_location_error_m","regime":"Existence of the recovered source_location_strength_time is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by declared priors. Stability is conditionally stable (kappa_eff ~= 500); transport_model_uncertainty dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Lognormal sets the irreducible data-fidelity floor.","secondary":"emission_rate_RMSE_percent"},"size_tiers":{"center_spec":{"omega":{"N_sensors":15,"domain_radius_km":5.0,"N_time_observations":50,"transport_uncertainty_percent":20},"input_format":"measurement_only","problem_class":"nonlinear_inverse","forward_operator":"environmental_concentration_inversion","epsilon_fn_center":"100 source_location_error_m"},"omega_bounds":{"N_sensors":[3,100],"domain_radius_km":[0.1,100.0],"N_time_observations":[5,500],"transport_uncertainty_percent":[5,100]},"epsilon_bounds":{"source_location_error_m":[10,1000]},"allowed_problem_classes":["nonlinear_inverse"],"allowed_omega_dimensions":["N_sensors","domain_radius_km","transport_uncertainty_percent","N_time_observations"],"allowed_forward_operators":["environmental_concentration_inversion"]},"hardness_fn":{"type":"epsilon_fn","delta":5,"kappa":10000.0,"metric":"source_location_error_m"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x699733d75f28edaad30696d5fa593a58031a18fbf2754f14d3fa268a7992676d","chain_tx_hash":"0x22d1b301773ce69cb251e2681a83c2995f332f086496252480f6ac4c13de3254","chain_block":41555239}