{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:XFICEQ2XCSQGV2V3ZWFK2LOPTG","short_pith_number":"pith:XFICEQ2X","canonical_record":{"source":{"id":"2207.07379","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2022-07-15T09:58:13Z","cross_cats_sorted":["nlin.PS"],"title_canon_sha256":"778c49a8069b60ba9a78666f554bf69794563ce9528bf808bc6f159963f74b34","abstract_canon_sha256":"f1228ad5aa3c0c145357765d131c4bb5616ecd3588de88b9b084540ee2e3273a"},"schema_version":"1.0"},"canonical_sha256":"b95022435714a06aeabbcd8aad2dcf99a85d9461af6b72d38e13f82c400c84fb","source":{"kind":"arxiv","id":"2207.07379","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.07379","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"arxiv_version","alias_value":"2207.07379v1","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.07379","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_12","alias_value":"XFICEQ2XCSQG","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_16","alias_value":"XFICEQ2XCSQGV2V3","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_8","alias_value":"XFICEQ2X","created_at":"2026-07-05T04:40:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:XFICEQ2XCSQGV2V3ZWFK2LOPTG","target":"record","payload":{"canonical_record":{"source":{"id":"2207.07379","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2022-07-15T09:58:13Z","cross_cats_sorted":["nlin.PS"],"title_canon_sha256":"778c49a8069b60ba9a78666f554bf69794563ce9528bf808bc6f159963f74b34","abstract_canon_sha256":"f1228ad5aa3c0c145357765d131c4bb5616ecd3588de88b9b084540ee2e3273a"},"schema_version":"1.0"},"canonical_sha256":"b95022435714a06aeabbcd8aad2dcf99a85d9461af6b72d38e13f82c400c84fb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:40:31.891225Z","signature_b64":"WQXfNhfHmER+3i29SmLALrdj/Yg/Axb8ySqWpFRxihfqro7d679/n1R08EJ0ow18r68XGQ3ePcx2QJVtGMglCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b95022435714a06aeabbcd8aad2dcf99a85d9461af6b72d38e13f82c400c84fb","last_reissued_at":"2026-07-05T04:40:31.890847Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:40:31.890847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.07379","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":"2026-07-05T04:40:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vIqS+1On4prygvzLJUM3Y8J/XTTYx5KWDta3gARZLciRG1DPJbE0FDfrlVOw/Ch3dOdRmjI3F8risNW3rzQKAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T08:12:41.012892Z"},"content_sha256":"ee2dea646e561e4cb958a19e4725692ebbb276ff5a4c0861fc16e6e8a1c7a178","schema_version":"1.0","event_id":"sha256:ee2dea646e561e4cb958a19e4725692ebbb276ff5a4c0861fc16e6e8a1c7a178"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:XFICEQ2XCSQGV2V3ZWFK2LOPTG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coexistence of two dune growth mechanisms in a landscape-scale experiment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nlin.PS"],"primary_cat":"physics.geo-ph","authors_text":"Cl\\'ement Narteau, Cyril Gadal, Philippe Claudin, Ping L\\\"u, S\\'ebastien Rodriguez, Sylvain Courrech du Pont, Zhibao Dong, Zhishan An","submitted_at":"2022-07-15T09:58:13Z","abstract_excerpt":"In landscape-scale experiments at the edge of the Gobi desert, we show that various dune types develop simultaneously under natural wind conditions. Using 4 years of high-resolution topographic data, we demonstrate that, depending on sand availability, the same wind regime can lead to two different dune orientations, which reflect two independent dune growth mechanisms. As periodic oblique dunes emerge from a sand bed and develop to 2 meters in height, we analyze defect dynamics that drive the non-linear phase of pattern coarsening. Starting from conical sand heaps deposited on gravels, we obs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.07379","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2207.07379/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T04:40:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bpJTlDQqw3tJy6Mfg0ol3Acqp4BaXzI35RtvT9xDHW7j3yRhppvOX+t08WRC0Ky0zQGHjOSVjLmYaJxQClHgCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T08:12:41.013428Z"},"content_sha256":"1a95b14fe694359de749582951d200636f43716fcfc74a84721bac538686d4fc","schema_version":"1.0","event_id":"sha256:1a95b14fe694359de749582951d200636f43716fcfc74a84721bac538686d4fc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XFICEQ2XCSQGV2V3ZWFK2LOPTG/bundle.json","state_url":"https://pith.science/pith/XFICEQ2XCSQGV2V3ZWFK2LOPTG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XFICEQ2XCSQGV2V3ZWFK2LOPTG/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":"2026-08-05T08:12:41Z","links":{"resolver":"https://pith.science/pith/XFICEQ2XCSQGV2V3ZWFK2LOPTG","bundle":"https://pith.science/pith/XFICEQ2XCSQGV2V3ZWFK2LOPTG/bundle.json","state":"https://pith.science/pith/XFICEQ2XCSQGV2V3ZWFK2LOPTG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XFICEQ2XCSQGV2V3ZWFK2LOPTG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:XFICEQ2XCSQGV2V3ZWFK2LOPTG","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":"f1228ad5aa3c0c145357765d131c4bb5616ecd3588de88b9b084540ee2e3273a","cross_cats_sorted":["nlin.PS"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2022-07-15T09:58:13Z","title_canon_sha256":"778c49a8069b60ba9a78666f554bf69794563ce9528bf808bc6f159963f74b34"},"schema_version":"1.0","source":{"id":"2207.07379","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.07379","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"arxiv_version","alias_value":"2207.07379v1","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.07379","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_12","alias_value":"XFICEQ2XCSQG","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_16","alias_value":"XFICEQ2XCSQGV2V3","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_8","alias_value":"XFICEQ2X","created_at":"2026-07-05T04:40:31Z"}],"graph_snapshots":[{"event_id":"sha256:1a95b14fe694359de749582951d200636f43716fcfc74a84721bac538686d4fc","target":"graph","created_at":"2026-07-05T04:40:31Z","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/2207.07379/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In landscape-scale experiments at the edge of the Gobi desert, we show that various dune types develop simultaneously under natural wind conditions. Using 4 years of high-resolution topographic data, we demonstrate that, depending on sand availability, the same wind regime can lead to two different dune orientations, which reflect two independent dune growth mechanisms. As periodic oblique dunes emerge from a sand bed and develop to 2 meters in height, we analyze defect dynamics that drive the non-linear phase of pattern coarsening. Starting from conical sand heaps deposited on gravels, we obs","authors_text":"Cl\\'ement Narteau, Cyril Gadal, Philippe Claudin, Ping L\\\"u, S\\'ebastien Rodriguez, Sylvain Courrech du Pont, Zhibao Dong, Zhishan An","cross_cats":["nlin.PS"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2022-07-15T09:58:13Z","title":"Coexistence of two dune growth mechanisms in a landscape-scale experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.07379","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:ee2dea646e561e4cb958a19e4725692ebbb276ff5a4c0861fc16e6e8a1c7a178","target":"record","created_at":"2026-07-05T04:40:31Z","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":"f1228ad5aa3c0c145357765d131c4bb5616ecd3588de88b9b084540ee2e3273a","cross_cats_sorted":["nlin.PS"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2022-07-15T09:58:13Z","title_canon_sha256":"778c49a8069b60ba9a78666f554bf69794563ce9528bf808bc6f159963f74b34"},"schema_version":"1.0","source":{"id":"2207.07379","kind":"arxiv","version":1}},"canonical_sha256":"b95022435714a06aeabbcd8aad2dcf99a85d9461af6b72d38e13f82c400c84fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b95022435714a06aeabbcd8aad2dcf99a85d9461af6b72d38e13f82c400c84fb","first_computed_at":"2026-07-05T04:40:31.890847Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:40:31.890847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WQXfNhfHmER+3i29SmLALrdj/Yg/Axb8ySqWpFRxihfqro7d679/n1R08EJ0ow18r68XGQ3ePcx2QJVtGMglCg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:40:31.891225Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.07379","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ee2dea646e561e4cb958a19e4725692ebbb276ff5a4c0861fc16e6e8a1c7a178","sha256:1a95b14fe694359de749582951d200636f43716fcfc74a84721bac538686d4fc"],"state_sha256":"bc06176d41c038ac0eefd2ae180570565e9301aa0c16b4996fcd1ac42db22d4f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9aeQHP2wDhiaxRWDDr4vA/P1fP1OeIOvjxnylPMugS6grlg6iEvk3zzyEHJCg1gDMbeyBYgqt2WIB41s5AYlBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T08:12:41.016808Z","bundle_sha256":"e5e195ad93bea27a534ae60f5df2feab105fb713bdb00e866574be6e82ec7c6d"}}