{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:ZK4CFQHX23KQKH4RTW2BYUKURN","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1e011383ee24e64d76a0d30abcca33228214972e6277d990c7d855f72e633cd2","cross_cats_sorted":["physics.flu-dyn"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2022-03-18T02:58:49Z","title_canon_sha256":"164af0836a273ebd59ca4ac345acb168e550d8a719370ddefacafac17bafee8d"},"schema_version":"1.0","source":{"id":"2204.00084","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.00084","created_at":"2026-07-05T04:10:42Z"},{"alias_kind":"arxiv_version","alias_value":"2204.00084v1","created_at":"2026-07-05T04:10:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.00084","created_at":"2026-07-05T04:10:42Z"},{"alias_kind":"pith_short_12","alias_value":"ZK4CFQHX23KQ","created_at":"2026-07-05T04:10:42Z"},{"alias_kind":"pith_short_16","alias_value":"ZK4CFQHX23KQKH4R","created_at":"2026-07-05T04:10:42Z"},{"alias_kind":"pith_short_8","alias_value":"ZK4CFQHX","created_at":"2026-07-05T04:10:42Z"}],"graph_snapshots":[{"event_id":"sha256:20d163af80042ca965a2072a23b4c9d47565183aa82963a7ac0e95566494f03e","target":"graph","created_at":"2026-07-05T04:10:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2204.00084/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper reports a downscaled water tunnel experiment to study the temporal characteristics of a double dune interaction system and the new pattern of dune interaction when the initial mass ratio of the two dunes is large. These topics are useful for a comprehensive understanding of the dune interaction system but were rarely covered before. The turnover time scale under dune interaction is defined, and its time averaged value is found to have a nonmonotonic relationship with the initial mass ratio. A nonmonotonic relationship is also found between the convexity of the downstream dune tip an","authors_text":"Bin Yang, Nan He, Pan Jia, Xin Gao, Yang Zhang, Yuanwei Lin","cross_cats":["physics.flu-dyn"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2022-03-18T02:58:49Z","title":"Evolution of barchan dune interactions investigated by a downscaled water tunnel experiment: the temporal characteristics and a soliton-like behavior"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.00084","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:b9fa79dccab2198396a02abe2c31f376bba2dcf12547fc85d378cbf8475d4800","target":"record","created_at":"2026-07-05T04:10:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1e011383ee24e64d76a0d30abcca33228214972e6277d990c7d855f72e633cd2","cross_cats_sorted":["physics.flu-dyn"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2022-03-18T02:58:49Z","title_canon_sha256":"164af0836a273ebd59ca4ac345acb168e550d8a719370ddefacafac17bafee8d"},"schema_version":"1.0","source":{"id":"2204.00084","kind":"arxiv","version":1}},"canonical_sha256":"cab822c0f7d6d5051f919db41c51548b5661013e298c3e2d346e82a86956bb6e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cab822c0f7d6d5051f919db41c51548b5661013e298c3e2d346e82a86956bb6e","first_computed_at":"2026-07-05T04:10:42.593561Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:10:42.593561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"upse1DMe50Ezqxjne3kAiuMagBufKD0tNwnkl/6JJXs0vA7eXoUIyxicMEnZivjKRdaZGs1nXsoAwzkQ50/UAw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:10:42.594006Z","signed_message":"canonical_sha256_bytes"},"source_id":"2204.00084","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9fa79dccab2198396a02abe2c31f376bba2dcf12547fc85d378cbf8475d4800","sha256:20d163af80042ca965a2072a23b4c9d47565183aa82963a7ac0e95566494f03e"],"state_sha256":"c5e1c13b3ac7020715f468cfe3fa1b2bcdadd2344e68bce10edc208c27a295e0"}