{"id":"W1973322410","doi":"10.1016/j.jconhyd.2010.08.003","title":"Land-use controls on sources and fate of nitrate in shallow groundwater of an agricultural area revealed by multiple environmental tracers","year":2010,"lang":"en","type":"article","venue":"Journal of Contaminant Hydrology","topic":"Groundwater and Isotope Geochemistry","field":"Earth and Planetary Sciences","cited_by":97,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of Calgary","funders":"","keywords":"Nitrate; Groundwater; Aquifer; Environmental science; Hydrology (agriculture); Environmental chemistry; Contamination; Surface water; Environmental engineering; Ecology; Chemistry; Geology","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0003340696,0.0001361571,0.0004188914,0.00007118701,0.00003146345,0.00001964684,0.0001568164,0.0001262557,0.0001507486],"category_scores_gemma":[0.00002537497,0.00008492162,0.00006613726,0.00003192042,0.0001713079,0.0002931385,0.000007452544,0.0002970584,0.000001700189],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000003466045,"about_ca_system_score_gemma":0.00001193371,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0007255617,"about_ca_topic_score_gemma":0.003641887,"domain_scores_codex":[0.9989187,0.00009737482,0.0004806184,0.0001357564,0.0001530059,0.0002145664],"domain_scores_gemma":[0.9992536,0.0001767678,0.000357189,0.00008830194,0.00001996895,0.0001042266],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0004663452,0.00008322915,0.7467656,0.000008773515,0.00002355625,0.00003366737,0.0002827765,0.0001047299,0.2514029,6.868259e-7,0.000009464817,0.0008181985],"study_design_scores_gemma":[0.002322156,0.001406703,0.9740899,0.00002027057,0.00002872971,0.0003212317,0.0002277187,0.001055599,0.02012095,0.00004002032,0.0002562197,0.0001105722],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9994269,0.0001414316,0.000005442403,0.00007076815,0.0001074461,0.00009503901,0.00006538543,0.000001921998,0.00008568124],"genre_scores_gemma":[0.9996744,0.00005601146,0.00006074681,0.00005188028,0.00003685123,4.666821e-7,0.00004205829,0.000002689968,0.00007492514],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.231282,"threshold_uncertainty_score":0.3463003,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.005748885567397181,"score_gpt":0.1741466397906197,"score_spread":0.1683977542232225,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}