Pith Number

pith:NXBXM2RY

pith:2026:NXBXM2RYKXYICJAIKPRJWU2EKU

not attested not anchored not stored refs pending

Morphological Fingerprints of Forbush Decreases and Their Relation to Geomagnetic Storm Severity

D. Sierra-Porta, Juan D. Perez-Navarro

Graph-based fingerprints from Forbush decrease networks carry measurable signal for classifying geomagnetic storm intensity.

arxiv:2602.16128 v2 · 2026-02-18 · astro-ph.IM

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\usepackage{pith}
\pithnumber{NXBXM2RYKXYICJAIKPRJWU2EKU}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

The proposed fingerprints exhibit measurable signal for three tasks: (i) multi-class classification of geomagnetic storm intensity (G3/G4/G5) with moderate but consistent performance and errors dominated by adjacent categories; (ii) stronger binary severity screening (≥G4 vs. G3) with high sensitivity to severe events; and (iii) drop regression with partial least squares achieving positive explained variance relative to a fold-wise mean baseline.

C2weakest assumption

That the chosen distance metrics and graph-construction steps preserve the physically relevant morphological differences between events without introducing artifacts that drive the reported predictive skill.

C3one line summary

Graph-based morphological fingerprints from cosmic-ray station data show moderate skill at classifying and regressing geomagnetic storm intensity linked to Forbush decreases.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T03:10:03.543114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6dc3766a3855f081240853e29b534455316ae09a29275458fe7b21d22c2cfdb8

Aliases

arxiv: 2602.16128 · arxiv_version: 2602.16128v2 · doi: 10.48550/arxiv.2602.16128 · pith_short_12: NXBXM2RYKXYI · pith_short_16: NXBXM2RYKXYICJAI · pith_short_8: NXBXM2RY

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/NXBXM2RYKXYICJAIKPRJWU2EKU \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 6dc3766a3855f081240853e29b534455316ae09a29275458fe7b21d22c2cfdb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48da6dc22376a6d573bec20ce3af06c6353566f02f884fde119e53198b3a14af",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-02-18T01:39:10Z",
    "title_canon_sha256": "ea5e5a51e1b08140ada778127a0f5d51af235adc6ee903b1f3ec5d9fa2a98d69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.16128",
    "kind": "arxiv",
    "version": 2
  }
}