Pith Number

pith:MNTUY3SZ

pith:2025:MNTUY3SZVGT75URRXPOPNJCLRR

not attested not anchored not stored refs resolved

Thermochemical models of outer core convection with heterogeneous core-mantle boundary heat flux

Andrew T. Clarke, Christopher J. Davies, Jonathan E. Mound, Souvik Naskar

Outer core convection models with heterogeneous CMB heat flux produce diverse local and global stable regions.

arxiv:2507.03538 v5 · 2025-07-04 · astro-ph.EP · physics.geo-ph

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4 Citations open

5 Replications open

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Claims

C1strongest claim

Our simulations reveal a diverse range of locations, properties, and morphologies of stable regions depending on Ra_T and Ra_xi, they can have a seismically detectable thickness and strength and might also have a signature in geomagnetic observations.

C2weakest assumption

The simulations fix Ekman number at 10^{-5} and Prandtl numbers at 1 and 10 while exploring limited Rayleigh number ranges; these choices and the imposed heterogeneous heat flux pattern are assumed to capture essential Earth-like behavior without full coupling to mantle dynamics or realistic core diffusivities.

C3one line summary

Simulations of outer core convection show diverse stable regions whose locations and properties depend on thermal and chemical Rayleigh numbers, persisting under heterogeneous CMB heat flux and potentially detectable seismically or geomagnetically.

References

52 extracted · 52 resolved · 0 Pith anchors

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[4] author B. A. Buffett , author C. T. Seagle , title Stratification of the top of the core due to chemical interactions with the mantle , journal Journal of Geophysical Research: Solid Earth volume 115 2010

[5] 2017, Geophysical Research Letters, 44, 8303, doi: 10.1002/2017GL074261 2017 · doi:10.1002/2017gl074261

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T14:03:19.633678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63674c6e59a9a7fed231bbdcf6a44b8c6f8193b0fc164efc0aa28d79ccb15e4f

Aliases

arxiv: 2507.03538 · arxiv_version: 2507.03538v5 · doi: 10.48550/arxiv.2507.03538 · pith_short_12: MNTUY3SZVGT7 · pith_short_16: MNTUY3SZVGT75URR · pith_short_8: MNTUY3SZ

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/MNTUY3SZVGT75URRXPOPNJCLRR \
  | 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: 63674c6e59a9a7fed231bbdcf6a44b8c6f8193b0fc164efc0aa28d79ccb15e4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "846a485f701ccc86ddf06c6897e4bd05d6efd07f76a4a384ecaf115df61a3e7b",
    "cross_cats_sorted": [
      "physics.geo-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2025-07-04T12:42:23Z",
    "title_canon_sha256": "c7442638da7b72d72a01bea4bdfbb608cbb43f4815a84731e1980907d82ba7b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.03538",
    "kind": "arxiv",
    "version": 5
  }
}