{"artifact_id":"L1-421","layer":"L1","title":"River Hydraulics Shallow Water Inversion","domain":"Environmental Science","sub_domain":"Hydrology","physics_fingerprint":{"L_DAG":3.0,"title":"River Hydraulics Shallow Water Inversion","domain":"Environmental Science","carrier":"N/A","primitives":["D.space","O.least_squares.rating_curve","S.fdm.flood_routing"],"sub_domain":"Hydrology","noise_model":"gaussian","problem_class":"parameter_estimation","solution_space":"Manning_roughness_bathymetry","difficulty_delta":3,"integration_axis":"river_reach","sensing_mechanism":"water_level_discharge_measurement"},"observable_profile":{"metric":"water_level_RMSE_m","regime":"Existence of the recovered Manning_roughness_bathymetry 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 ~= 80); bank_overflow_uncertainty dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Gaussian sets the irreducible data-fidelity floor.","secondary":"discharge_RMSE_percent"},"size_tiers":{"center_spec":{"omega":{"N_gauges":5,"roughness_n":0.035,"reach_length_km":50,"discharge_peak_m3_s":1000},"input_format":"measurement_only","problem_class":"parameter_estimation","forward_operator":"water_level_discharge_measurement","epsilon_fn_center":"0.10 water_level_RMSE_m"},"omega_bounds":{"N_gauges":[2,50],"roughness_n":[0.01,0.1],"reach_length_km":[1,1000],"discharge_peak_m3_s":[10,100000]},"epsilon_bounds":{"water_level_RMSE_m":[0.01,0.5]},"allowed_problem_classes":["parameter_estimation"],"allowed_omega_dimensions":["N_gauges","reach_length_km","discharge_peak_m3_s","roughness_n"],"allowed_forward_operators":["water_level_discharge_measurement"]},"hardness_fn":{"type":"epsilon_fn","delta":3,"kappa":2000,"metric":"water_level_RMSE_m"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x52599914468dae4784412df2a6ba1035a0b0b4c83e90b5818a9a0b7e13d04bdc","chain_tx_hash":"0xd4ecbe5745af85f060529b3b07df29d4aba36cf21b9c0e4ae5aa46bb59214c26","chain_block":41555239}