{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:2SIDOIZHEPRFLJVHUEI2PJTFIE","short_pith_number":"pith:2SIDOIZH","schema_version":"1.0","canonical_sha256":"d49037232723e255a6a7a111a7a6654116f5819b7666d0d3e08867b835649fb2","source":{"kind":"arxiv","id":"0903.4586","version":3},"attestation_state":"computed","paper":{"title":"Scaling and dynamics of washboard road","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft","nlin.CD","physics.pop-ph"],"primary_cat":"nlin.PS","authors_text":"Anne-Florence Bitbol, Jim N. McElwaine, Nicolas Taberlet, Stephen W. Morris","submitted_at":"2009-03-26T13:50:48Z","abstract_excerpt":"Granular surfaces subjected to forces due to rolling wheels develop ripples above a critical speed. The resulting pattern, known as \"washboard\" or \"corrugated\" road, is common on dry, unpaved roads. We investigated this phenomenon theoretically and experimentally, using laboratory-scale apparatus and beds of dry sand. A thick layer of sand on a circular track was forced by a rolling wheel on an arm whose weight and moment of inertia could be varied. We compared the ripples made by the rolling wheel to those made using a simple inclined plow blade. We investigated the dependence of the critical"},"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":"0903.4586","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.PS","submitted_at":"2009-03-26T13:50:48Z","cross_cats_sorted":["cond-mat.soft","nlin.CD","physics.pop-ph"],"title_canon_sha256":"366526fe6a3836f415ed2800d62d4de8c11238d6ba15cd2b4e41d62a149b1a7d","abstract_canon_sha256":"c74d2b64741ac38044a89c4c2c6cfaaa7721d7d8c98662df5e2c0b21c68be4bf"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:47.527161Z","signature_b64":"22aasL+WhokaiwZY7phtrjQ9sRyfNdvFL9IWw0efhqljimL32aWaEzXnQTdZonfZhkOHSDaZNUdZgrf+cUvbBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d49037232723e255a6a7a111a7a6654116f5819b7666d0d3e08867b835649fb2","last_reissued_at":"2026-05-18T00:27:47.526715Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:47.526715Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Scaling and dynamics of washboard road","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft","nlin.CD","physics.pop-ph"],"primary_cat":"nlin.PS","authors_text":"Anne-Florence Bitbol, Jim N. McElwaine, Nicolas Taberlet, Stephen W. Morris","submitted_at":"2009-03-26T13:50:48Z","abstract_excerpt":"Granular surfaces subjected to forces due to rolling wheels develop ripples above a critical speed. The resulting pattern, known as \"washboard\" or \"corrugated\" road, is common on dry, unpaved roads. We investigated this phenomenon theoretically and experimentally, using laboratory-scale apparatus and beds of dry sand. A thick layer of sand on a circular track was forced by a rolling wheel on an arm whose weight and moment of inertia could be varied. We compared the ripples made by the rolling wheel to those made using a simple inclined plow blade. We investigated the dependence of the critical"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.4586","kind":"arxiv","version":3},"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":"0903.4586","created_at":"2026-05-18T00:27:47.526795+00:00"},{"alias_kind":"arxiv_version","alias_value":"0903.4586v3","created_at":"2026-05-18T00:27:47.526795+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.4586","created_at":"2026-05-18T00:27:47.526795+00:00"},{"alias_kind":"pith_short_12","alias_value":"2SIDOIZHEPRF","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_16","alias_value":"2SIDOIZHEPRFLJVH","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_8","alias_value":"2SIDOIZH","created_at":"2026-05-18T12:25:58.018023+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/2SIDOIZHEPRFLJVHUEI2PJTFIE","json":"https://pith.science/pith/2SIDOIZHEPRFLJVHUEI2PJTFIE.json","graph_json":"https://pith.science/api/pith-number/2SIDOIZHEPRFLJVHUEI2PJTFIE/graph.json","events_json":"https://pith.science/api/pith-number/2SIDOIZHEPRFLJVHUEI2PJTFIE/events.json","paper":"https://pith.science/paper/2SIDOIZH"},"agent_actions":{"view_html":"https://pith.science/pith/2SIDOIZHEPRFLJVHUEI2PJTFIE","download_json":"https://pith.science/pith/2SIDOIZHEPRFLJVHUEI2PJTFIE.json","view_paper":"https://pith.science/paper/2SIDOIZH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0903.4586&json=true","fetch_graph":"https://pith.science/api/pith-number/2SIDOIZHEPRFLJVHUEI2PJTFIE/graph.json","fetch_events":"https://pith.science/api/pith-number/2SIDOIZHEPRFLJVHUEI2PJTFIE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2SIDOIZHEPRFLJVHUEI2PJTFIE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2SIDOIZHEPRFLJVHUEI2PJTFIE/action/storage_attestation","attest_author":"https://pith.science/pith/2SIDOIZHEPRFLJVHUEI2PJTFIE/action/author_attestation","sign_citation":"https://pith.science/pith/2SIDOIZHEPRFLJVHUEI2PJTFIE/action/citation_signature","submit_replication":"https://pith.science/pith/2SIDOIZHEPRFLJVHUEI2PJTFIE/action/replication_record"}},"created_at":"2026-05-18T00:27:47.526795+00:00","updated_at":"2026-05-18T00:27:47.526795+00:00"}