{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:WDP3B3NDKLQPJQXGYJWB4H5VH2","short_pith_number":"pith:WDP3B3ND","canonical_record":{"source":{"id":"1510.07485","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2015-10-26T14:14:18Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"cc48ea91c27cd49325b88f37cddeae2208da7147d253da11c7a69bc7e068c175","abstract_canon_sha256":"63b36f2d89077825a5a9821cae0304131c3904997b1988203514b8ddad79a2b5"},"schema_version":"1.0"},"canonical_sha256":"b0dfb0eda352e0f4c2e6c26c1e1fb53e9bf3d9204c264fcd015cbc2b92c71c10","source":{"kind":"arxiv","id":"1510.07485","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07485","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07485v2","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07485","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"pith_short_12","alias_value":"WDP3B3NDKLQP","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WDP3B3NDKLQPJQXG","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WDP3B3ND","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:WDP3B3NDKLQPJQXGYJWB4H5VH2","target":"record","payload":{"canonical_record":{"source":{"id":"1510.07485","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2015-10-26T14:14:18Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"cc48ea91c27cd49325b88f37cddeae2208da7147d253da11c7a69bc7e068c175","abstract_canon_sha256":"63b36f2d89077825a5a9821cae0304131c3904997b1988203514b8ddad79a2b5"},"schema_version":"1.0"},"canonical_sha256":"b0dfb0eda352e0f4c2e6c26c1e1fb53e9bf3d9204c264fcd015cbc2b92c71c10","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:34.053540Z","signature_b64":"ylKDvHPJXn2d6WwsJFjVGYk04s51AJX+5WNM4tEi3WMUy+nA11K3fxyaZL+ONt1HnaJ1DeUQFQSg3cgs89bUDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b0dfb0eda352e0f4c2e6c26c1e1fb53e9bf3d9204c264fcd015cbc2b92c71c10","last_reissued_at":"2026-05-18T01:19:34.053113Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:34.053113Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.07485","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:19:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2e0xHaYGCMEQZ4s4smGx7PIxnnY2SoREnpJULXtDyWKCP+3ALnY6iGmAqWZzmWHH58lJA10hYH5mPlPvWuiCCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T09:05:50.517914Z"},"content_sha256":"65c7c81d59fad68235cde862e7c5c390f53c1a0098d898a88aa495829b66eba9","schema_version":"1.0","event_id":"sha256:65c7c81d59fad68235cde862e7c5c390f53c1a0098d898a88aa495829b66eba9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:WDP3B3NDKLQPJQXGYJWB4H5VH2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A study of surface semi-geostrophic turbulence: freely decaying dynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.flu-dyn"],"primary_cat":"physics.ao-ph","authors_text":"Francesco Ragone, Gualtiero Badin","submitted_at":"2015-10-26T14:14:18Z","abstract_excerpt":"In this study we give a characterization of semi-geostrophic turbulence by performing freely decaying simulations for the case of constant uniform potential vorticity, a set of equations known as surface semi-geostrophic approximation. The equations are formulated as conservation laws for potential temperature and potential vorticity, with a nonlinear Monge-Amp\\'{e}re type inversion equation for the streamfunction, expressed in a transformed coordinate system that follows the geostrophic flow. We perform model studies of turbulent surface semi-geostrophic flows in a doubly-periodic domain in t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07485","kind":"arxiv","version":2},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:19:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ikTFLVFTbXCh9T0N653OhZAZkM75dmUw5uV03W/mtBFexm9h1nRoeYsZba+ZBgNWcf/uAOOTaju8BT65m8CwAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T09:05:50.518246Z"},"content_sha256":"940602c2d952c3a146cce894a56d967dde89c993fdc45d1d2d0afdfdbb9cd25e","schema_version":"1.0","event_id":"sha256:940602c2d952c3a146cce894a56d967dde89c993fdc45d1d2d0afdfdbb9cd25e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WDP3B3NDKLQPJQXGYJWB4H5VH2/bundle.json","state_url":"https://pith.science/pith/WDP3B3NDKLQPJQXGYJWB4H5VH2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WDP3B3NDKLQPJQXGYJWB4H5VH2/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-21T09:05:50Z","links":{"resolver":"https://pith.science/pith/WDP3B3NDKLQPJQXGYJWB4H5VH2","bundle":"https://pith.science/pith/WDP3B3NDKLQPJQXGYJWB4H5VH2/bundle.json","state":"https://pith.science/pith/WDP3B3NDKLQPJQXGYJWB4H5VH2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WDP3B3NDKLQPJQXGYJWB4H5VH2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WDP3B3NDKLQPJQXGYJWB4H5VH2","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":"63b36f2d89077825a5a9821cae0304131c3904997b1988203514b8ddad79a2b5","cross_cats_sorted":["physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2015-10-26T14:14:18Z","title_canon_sha256":"cc48ea91c27cd49325b88f37cddeae2208da7147d253da11c7a69bc7e068c175"},"schema_version":"1.0","source":{"id":"1510.07485","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07485","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07485v2","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07485","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"pith_short_12","alias_value":"WDP3B3NDKLQP","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WDP3B3NDKLQPJQXG","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WDP3B3ND","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:940602c2d952c3a146cce894a56d967dde89c993fdc45d1d2d0afdfdbb9cd25e","target":"graph","created_at":"2026-05-18T01:19:34Z","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"},"paper":{"abstract_excerpt":"In this study we give a characterization of semi-geostrophic turbulence by performing freely decaying simulations for the case of constant uniform potential vorticity, a set of equations known as surface semi-geostrophic approximation. The equations are formulated as conservation laws for potential temperature and potential vorticity, with a nonlinear Monge-Amp\\'{e}re type inversion equation for the streamfunction, expressed in a transformed coordinate system that follows the geostrophic flow. We perform model studies of turbulent surface semi-geostrophic flows in a doubly-periodic domain in t","authors_text":"Francesco Ragone, Gualtiero Badin","cross_cats":["physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2015-10-26T14:14:18Z","title":"A study of surface semi-geostrophic turbulence: freely decaying dynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07485","kind":"arxiv","version":2},"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":"sha256:65c7c81d59fad68235cde862e7c5c390f53c1a0098d898a88aa495829b66eba9","target":"record","created_at":"2026-05-18T01:19:34Z","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":"63b36f2d89077825a5a9821cae0304131c3904997b1988203514b8ddad79a2b5","cross_cats_sorted":["physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2015-10-26T14:14:18Z","title_canon_sha256":"cc48ea91c27cd49325b88f37cddeae2208da7147d253da11c7a69bc7e068c175"},"schema_version":"1.0","source":{"id":"1510.07485","kind":"arxiv","version":2}},"canonical_sha256":"b0dfb0eda352e0f4c2e6c26c1e1fb53e9bf3d9204c264fcd015cbc2b92c71c10","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b0dfb0eda352e0f4c2e6c26c1e1fb53e9bf3d9204c264fcd015cbc2b92c71c10","first_computed_at":"2026-05-18T01:19:34.053113Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:34.053113Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ylKDvHPJXn2d6WwsJFjVGYk04s51AJX+5WNM4tEi3WMUy+nA11K3fxyaZL+ONt1HnaJ1DeUQFQSg3cgs89bUDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:34.053540Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.07485","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65c7c81d59fad68235cde862e7c5c390f53c1a0098d898a88aa495829b66eba9","sha256:940602c2d952c3a146cce894a56d967dde89c993fdc45d1d2d0afdfdbb9cd25e"],"state_sha256":"cfc686eb0f0b701aaab405c08e8092268ff6d85bee410f4d5f4e154cc48f4b18"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+1F8lVL6Rb2uFqYetSnYQ+/cNO60kn/fiLinFIKjLiKtlg4YhDkG4c3NYQwKi6/mSfJzxikqnYVF2z/IO7TNBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-21T09:05:50.520081Z","bundle_sha256":"e57812f86ec6d1229d45a11d07836d4ee0b5814471d8afbf49a79f7cbb0e6f21"}}