{"id":"W2095535998","doi":"10.1029/2006gl029015","title":"Amplitude loss of sonic waveform due to source coupling to the medium","year":2007,"lang":"en","type":"article","venue":"Geophysical Research Letters","topic":"Methane Hydrates and Related Phenomena","field":"Environmental Science","cited_by":19,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum GFZ; Canadian Natural Resources Limited; Natural Resources Canada; U.S. Geological Survey; U.S. Department of Energy","keywords":"Attenuation; Amplitude; Waveform; Coupling (piping); Acoustics; Geology; Borehole; Optics; Physics; Materials science; Geotechnical engineering","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0002238895,0.0003003542,0.0002092056,0.0005782959,0.0001408115,0.0003549388,0.0003145672,0.0002525515,0.002432502],"category_scores_gemma":[0.001730603,0.000199938,0.0001360418,0.000526308,0.0003800439,0.000405966,0.0004833427,0.0004813693,0.0003215735],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000225657,"about_ca_system_score_gemma":0.0001236341,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0008198672,"about_ca_topic_score_gemma":0.0006909671,"domain_scores_codex":[0.9997672,0.00001617423,0.000009123611,0.00003615374,0.0001383465,0.00003287726],"domain_scores_gemma":[0.9993548,0.0002467833,0.0001002824,0.00008665023,0.0001653142,0.00004614933],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"observational","study_design_scores_codex":[0.0006324492,0.00004517094,0.02144605,0.0001511348,0.00005917388,0.0007004384,0.0004008207,0.003214712,0.8912065,0.00068554,0.0005146784,0.08094337],"study_design_scores_gemma":[0.00005624752,0.0005077081,0.3449449,0.00003357015,0.0001422124,0.00221332,0.0004159031,0.02998808,0.6149808,0.001127241,0.00552857,0.00006145381],"study_design_candidate":"observational","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9560442,0.0002151048,0.03815817,0.0001091808,0.00003314888,0.00003562242,0.0002610138,0.0005086688,0.004634872],"genre_scores_gemma":[0.9941156,0.00009936661,0.004073238,0.00003086135,0.000009820712,0.00001286301,0.0002506751,0.00008015826,0.001327361],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.002432502,"threshold_uncertainty_score":0.008137524,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02372934883274949,"score_gpt":0.3021665680312994,"score_spread":0.2784372191985499,"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."}}