{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:AARMZNHDM6KZ4ECROFHI4GSB3Z","short_pith_number":"pith:AARMZNHD","canonical_record":{"source":{"id":"1902.04970","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-02-13T15:55:32Z","cross_cats_sorted":["physics.flu-dyn","physics.geo-ph"],"title_canon_sha256":"dbb361158d4a878ba2b574d6d9923b73e4d499f27d1a0f317e57454f769653fb","abstract_canon_sha256":"fc8d6bc15e287cf426579ecb1323dc46ff101e96bb6a7ee4d98d89216b27466e"},"schema_version":"1.0"},"canonical_sha256":"0022ccb4e367959e1051714e8e1a41de7674ee592c78e05121cf694077ddcf42","source":{"kind":"arxiv","id":"1902.04970","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.04970","created_at":"2026-05-17T23:44:02Z"},{"alias_kind":"arxiv_version","alias_value":"1902.04970v1","created_at":"2026-05-17T23:44:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.04970","created_at":"2026-05-17T23:44:02Z"},{"alias_kind":"pith_short_12","alias_value":"AARMZNHDM6KZ","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"AARMZNHDM6KZ4ECR","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"AARMZNHD","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:AARMZNHDM6KZ4ECROFHI4GSB3Z","target":"record","payload":{"canonical_record":{"source":{"id":"1902.04970","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-02-13T15:55:32Z","cross_cats_sorted":["physics.flu-dyn","physics.geo-ph"],"title_canon_sha256":"dbb361158d4a878ba2b574d6d9923b73e4d499f27d1a0f317e57454f769653fb","abstract_canon_sha256":"fc8d6bc15e287cf426579ecb1323dc46ff101e96bb6a7ee4d98d89216b27466e"},"schema_version":"1.0"},"canonical_sha256":"0022ccb4e367959e1051714e8e1a41de7674ee592c78e05121cf694077ddcf42","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:02.469399Z","signature_b64":"sj8Bqd++iVrRvWwwEnxrDJTloVInWuTUqwhiEgl/qWm+SmOXm6agtWwEZD3NhTFva9cxuwVbL19N5iI5lySWAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0022ccb4e367959e1051714e8e1a41de7674ee592c78e05121cf694077ddcf42","last_reissued_at":"2026-05-17T23:44:02.468893Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:02.468893Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.04970","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:44:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ynvrehgnkAEvEDfgfpdyVoYDdpvlrDxKhZBc0ZodDV/umJxm0jESmKuxNVM+ht43gyjOhUKkZFL5UFbpMizPAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:02:16.990186Z"},"content_sha256":"157d0d2882045273a9d1dc8f308e0c32f5b8db2a3edff34f079bd419a7784050","schema_version":"1.0","event_id":"sha256:157d0d2882045273a9d1dc8f308e0c32f5b8db2a3edff34f079bd419a7784050"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:AARMZNHDM6KZ4ECROFHI4GSB3Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonlinear saturation and oscillations of collisionless zonal flows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.flu-dyn","physics.geo-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Hongxuan Zhu, I. Y. Dodin, Yao Zhou","submitted_at":"2019-02-13T15:55:32Z","abstract_excerpt":"In homogeneous drift-wave (DW) turbulence, zonal flows (ZFs) can be generated via a modulational instability (MI) that either saturates monotonically or leads to oscillations of the ZF energy at the nonlinear stage. This dynamics is often attributed as the predator--prey oscillations induced by ZF collisional damping; however, similar dynamics is also observed in collisionless ZFs, in which case a different mechanism must be involved. Here, we propose a semi-analytic theory that explains the transition between the oscillations and saturation of collisionless ZFs within the quasilinear Hasegawa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.04970","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:44:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sYQeKJGcyXqfFrHb8KYlLGOkz8iDfSFcpr0UwBykssU/52Kyuk+komMKd5o6FDKCO3HrYoGmZwgBnV8SGSRGDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:02:16.990553Z"},"content_sha256":"4c5c5635c55e19fa85fc9d591de38d780d8b950974b7d5261c5a5ea356a33927","schema_version":"1.0","event_id":"sha256:4c5c5635c55e19fa85fc9d591de38d780d8b950974b7d5261c5a5ea356a33927"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AARMZNHDM6KZ4ECROFHI4GSB3Z/bundle.json","state_url":"https://pith.science/pith/AARMZNHDM6KZ4ECROFHI4GSB3Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AARMZNHDM6KZ4ECROFHI4GSB3Z/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":"2026-06-02T02:02:16Z","links":{"resolver":"https://pith.science/pith/AARMZNHDM6KZ4ECROFHI4GSB3Z","bundle":"https://pith.science/pith/AARMZNHDM6KZ4ECROFHI4GSB3Z/bundle.json","state":"https://pith.science/pith/AARMZNHDM6KZ4ECROFHI4GSB3Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AARMZNHDM6KZ4ECROFHI4GSB3Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:AARMZNHDM6KZ4ECROFHI4GSB3Z","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":"fc8d6bc15e287cf426579ecb1323dc46ff101e96bb6a7ee4d98d89216b27466e","cross_cats_sorted":["physics.flu-dyn","physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-02-13T15:55:32Z","title_canon_sha256":"dbb361158d4a878ba2b574d6d9923b73e4d499f27d1a0f317e57454f769653fb"},"schema_version":"1.0","source":{"id":"1902.04970","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.04970","created_at":"2026-05-17T23:44:02Z"},{"alias_kind":"arxiv_version","alias_value":"1902.04970v1","created_at":"2026-05-17T23:44:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.04970","created_at":"2026-05-17T23:44:02Z"},{"alias_kind":"pith_short_12","alias_value":"AARMZNHDM6KZ","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"AARMZNHDM6KZ4ECR","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"AARMZNHD","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:4c5c5635c55e19fa85fc9d591de38d780d8b950974b7d5261c5a5ea356a33927","target":"graph","created_at":"2026-05-17T23:44:02Z","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 homogeneous drift-wave (DW) turbulence, zonal flows (ZFs) can be generated via a modulational instability (MI) that either saturates monotonically or leads to oscillations of the ZF energy at the nonlinear stage. This dynamics is often attributed as the predator--prey oscillations induced by ZF collisional damping; however, similar dynamics is also observed in collisionless ZFs, in which case a different mechanism must be involved. Here, we propose a semi-analytic theory that explains the transition between the oscillations and saturation of collisionless ZFs within the quasilinear Hasegawa","authors_text":"Hongxuan Zhu, I. Y. Dodin, Yao Zhou","cross_cats":["physics.flu-dyn","physics.geo-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-02-13T15:55:32Z","title":"Nonlinear saturation and oscillations of collisionless zonal flows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.04970","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":"sha256:157d0d2882045273a9d1dc8f308e0c32f5b8db2a3edff34f079bd419a7784050","target":"record","created_at":"2026-05-17T23:44:02Z","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":"fc8d6bc15e287cf426579ecb1323dc46ff101e96bb6a7ee4d98d89216b27466e","cross_cats_sorted":["physics.flu-dyn","physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-02-13T15:55:32Z","title_canon_sha256":"dbb361158d4a878ba2b574d6d9923b73e4d499f27d1a0f317e57454f769653fb"},"schema_version":"1.0","source":{"id":"1902.04970","kind":"arxiv","version":1}},"canonical_sha256":"0022ccb4e367959e1051714e8e1a41de7674ee592c78e05121cf694077ddcf42","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0022ccb4e367959e1051714e8e1a41de7674ee592c78e05121cf694077ddcf42","first_computed_at":"2026-05-17T23:44:02.468893Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:02.468893Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sj8Bqd++iVrRvWwwEnxrDJTloVInWuTUqwhiEgl/qWm+SmOXm6agtWwEZD3NhTFva9cxuwVbL19N5iI5lySWAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:02.469399Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.04970","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:157d0d2882045273a9d1dc8f308e0c32f5b8db2a3edff34f079bd419a7784050","sha256:4c5c5635c55e19fa85fc9d591de38d780d8b950974b7d5261c5a5ea356a33927"],"state_sha256":"068cde6e18ac66ef2ff5ac790d555b8c848073321052f30b72507a77da8723d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+Nbm3SqEX0HYUonzIc62waY4LL8LpY/5q+1h3K+gHBM5fyRR2EuGMKUt6G09Fg7DiaR5MBFNZ/WapO+sAKNvDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T02:02:16.992541Z","bundle_sha256":"3378f8f0be830f7a99fc686ac3a0ddbdb47536e556cf6436c71a1995d214fddf"}}