Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/30654
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hood, Lon L. | en_US |
dc.contributor.author | Oliveira, Joana S. | en_US |
dc.contributor.author | GALLUZZI, VALENTINA | en_US |
dc.contributor.author | Rothery, David Alan | en_US |
dc.date.accessioned | 2021-02-26T16:29:54Z | - |
dc.date.available | 2021-02-26T16:29:54Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 2169-9097 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/30654 | - |
dc.description.abstract | One hundred six low-altitude passes of magnetometer data from the last 2 months of the MErcury Surface, Space ENvironment, GEochemistry, and Ranging mission have been applied to produce a map of the crustal magnetic field at a constant altitude of 40 km covering latitudes of 35-75° N and longitudes of 270-90° E. Some anomalies correlate significantly with impact basins/craters (e.g., Rustaveli and Vyasa), while other basins/craters have no obvious anomalies. A possible interpretation that is consistent with lunar evidence is that some impactors delivered more ferromagnetic Fe-Ni metal to the interior subsurfaces and ejecta fields of the craters/basins that they produced. The amount of metallic iron that could plausibly be delivered is limited by the diameter and mass of an impactor that would yield a crater with observed diameters (e.g., 200 km for Rustaveli). This in turn limits the maximum amplitude of anomalies that could be induced by impactor-added iron in the present-day Mercury global field to relatively low values. It is therefore concluded that if impactor-added iron is the source of the observed crater-associated anomalies, then they must be almost entirely a consequence of ancient remanent magnetization. A broad magnetic anomaly occurs over the northern rise, a topographically high region with an associated strong free air gravity anomaly. A possible interpretation of the latter anomaly is that an early major impact preconditioned the region for a later mantle uplift event. | en_US |
dc.language.iso | eng | en_US |
dc.title | Investigating Sources of Mercury's Crustal Magnetic Field: Further Mapping of MESSENGER Magnetometer Data | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1029/2018JE005683 | en_US |
dc.identifier.scopus | 2-s2.0-85055284741 | en_US |
dc.identifier.isi | 000450621300010 | en_US |
dc.identifier.url | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JE005683 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 123 | en_US |
dc.relation.issue | 10 | en_US |
dc.relation.firstpage | 2647 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 4 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | GBR | en_US |
dc.contributor.country | NLD | en_US |
dc.contributor.country | PRT | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | JOURNAL OF GEOPHYSICAL RESEARCH (PLANETS) | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2018JGRE..123.2647H | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | IAPS Roma | - |
crisitem.author.orcid | 0000-0002-3237-3456 | - |
crisitem.journal.journalissn | 2169-9097 | - |
crisitem.journal.ance | E230813 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Hood_et_al-2018-Investigating_Sources_of_Mercurys_Crustal_Magnetic_Field.pdf | PDF editoriale | 9.83 MB | Adobe PDF | View/Open |
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