{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:VVV5AKX5ED7FBTEZBJKVX6XWKT","short_pith_number":"pith:VVV5AKX5","schema_version":"1.0","canonical_sha256":"ad6bd02afd20fe50cc990a555bfaf654d250e3616b389ff38252ef2c026f2a87","source":{"kind":"arxiv","id":"1605.09727","version":1},"attestation_state":"computed","paper":{"title":"A Mathematical Model of the Rainwater Flows in a Green Roof","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.geo-ph","authors_text":"Andrew Lacey, Catherine Adley, Gemma Fay, Ian Hewitt, Marguerite Robinson, Mark Cooker, Michael Vynnycky, Niklas Mellgren","submitted_at":"2016-04-28T12:42:13Z","abstract_excerpt":"A model is presented for the gravity-driven flow of rainwater descending through the soil layer of a green roof, treated as a porous medium on a flat permeable surface representing an efficient drainage layer. A fully saturated zone is shown to occur. It is typically a thin layer, relative to the total soil thickness, and lies at the bottom of the soil layer. This provides a bottom boundary condition for the partially saturated upper zone. It is shown that after the onset of rainfall, well-defined fronts of water can descend through the soil layer. Also the rainwater flow is relatively quick c"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1605.09727","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2016-04-28T12:42:13Z","cross_cats_sorted":[],"title_canon_sha256":"b9c53d3d7f354e3ab881dfd41191b9da930ab51d59e24bee6a3b22473279cc54","abstract_canon_sha256":"6e6cbf98384ba1edf6735329ef008d983adfbf53342a40d507cf1b1a261374b1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:13:10.266785Z","signature_b64":"Y852ZZVekw0TFvi1A1qAVkvZR/jOjOKZV0i8GT7O7UyEHdrdab8YWt2VmPxqTM0kyFS3LEXa3MmvgOJPkUU1Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad6bd02afd20fe50cc990a555bfaf654d250e3616b389ff38252ef2c026f2a87","last_reissued_at":"2026-05-18T01:13:10.266334Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:13:10.266334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Mathematical Model of the Rainwater Flows in a Green Roof","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.geo-ph","authors_text":"Andrew Lacey, Catherine Adley, Gemma Fay, Ian Hewitt, Marguerite Robinson, Mark Cooker, Michael Vynnycky, Niklas Mellgren","submitted_at":"2016-04-28T12:42:13Z","abstract_excerpt":"A model is presented for the gravity-driven flow of rainwater descending through the soil layer of a green roof, treated as a porous medium on a flat permeable surface representing an efficient drainage layer. A fully saturated zone is shown to occur. It is typically a thin layer, relative to the total soil thickness, and lies at the bottom of the soil layer. This provides a bottom boundary condition for the partially saturated upper zone. It is shown that after the onset of rainfall, well-defined fronts of water can descend through the soil layer. Also the rainwater flow is relatively quick c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.09727","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1605.09727","created_at":"2026-05-18T01:13:10.266404+00:00"},{"alias_kind":"arxiv_version","alias_value":"1605.09727v1","created_at":"2026-05-18T01:13:10.266404+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.09727","created_at":"2026-05-18T01:13:10.266404+00:00"},{"alias_kind":"pith_short_12","alias_value":"VVV5AKX5ED7F","created_at":"2026-05-18T12:30:48.956258+00:00"},{"alias_kind":"pith_short_16","alias_value":"VVV5AKX5ED7FBTEZ","created_at":"2026-05-18T12:30:48.956258+00:00"},{"alias_kind":"pith_short_8","alias_value":"VVV5AKX5","created_at":"2026-05-18T12:30:48.956258+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VVV5AKX5ED7FBTEZBJKVX6XWKT","json":"https://pith.science/pith/VVV5AKX5ED7FBTEZBJKVX6XWKT.json","graph_json":"https://pith.science/api/pith-number/VVV5AKX5ED7FBTEZBJKVX6XWKT/graph.json","events_json":"https://pith.science/api/pith-number/VVV5AKX5ED7FBTEZBJKVX6XWKT/events.json","paper":"https://pith.science/paper/VVV5AKX5"},"agent_actions":{"view_html":"https://pith.science/pith/VVV5AKX5ED7FBTEZBJKVX6XWKT","download_json":"https://pith.science/pith/VVV5AKX5ED7FBTEZBJKVX6XWKT.json","view_paper":"https://pith.science/paper/VVV5AKX5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1605.09727&json=true","fetch_graph":"https://pith.science/api/pith-number/VVV5AKX5ED7FBTEZBJKVX6XWKT/graph.json","fetch_events":"https://pith.science/api/pith-number/VVV5AKX5ED7FBTEZBJKVX6XWKT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VVV5AKX5ED7FBTEZBJKVX6XWKT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VVV5AKX5ED7FBTEZBJKVX6XWKT/action/storage_attestation","attest_author":"https://pith.science/pith/VVV5AKX5ED7FBTEZBJKVX6XWKT/action/author_attestation","sign_citation":"https://pith.science/pith/VVV5AKX5ED7FBTEZBJKVX6XWKT/action/citation_signature","submit_replication":"https://pith.science/pith/VVV5AKX5ED7FBTEZBJKVX6XWKT/action/replication_record"}},"created_at":"2026-05-18T01:13:10.266404+00:00","updated_at":"2026-05-18T01:13:10.266404+00:00"}