Matches in SemOpenAlex for { <https://semopenalex.org/work/W3160624167> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W3160624167 abstract "The meteorite paleomagnetic record indicates that differentiated (and potentially, partially differentiated) planetesimals generated dynamo fields in the first 6-20 Myr after the formation of calcium-aluminium-rich inclusions (CAIs). This early period of dynamo activity has been attributed to thermal convection in the liquid cores of these planetesimals during an early period of magma ocean convection. To better understand the controls on thermal dynamo generation in planetesimals, we have developed a 1D model of the thermal evolution of planetesimals from accretion through to the shutoff of convection in their silicate magma oceans for a variety of accretionary scenarios. The heat source of these bodies is the short-lived radiogenic isotope, 26Al. During differentiation, 26Al partitions into the silicate portion of these bodies, causing their magmas ocean to heat up and introducing stable thermal stratifications to the tops of their cores, which inhibits dynamo generation. In ‘instantaneously’ accreting bodies, this effect causes a delay on the order of >10 Myr to whole core convection and dynamo generation while this stratification is eroded. However, gradual core formation in bodies that accrete over >0.1 Myr can minimise the development of this stratification, allowing dynamo generation from ~4 Myr after CAI formation. Our model also predicts partially differentiated planetesimals with a core and mantle overlain by a chondritic crust for accretion timescales >1.2 Myr, although none of these bodies generate a thermal dynamo field. We compare our results from thousands of model runs to the meteorite paleomagnetic record to constrain the physical properties of their parent bodies." @default.
- W3160624167 created "2021-05-24" @default.
- W3160624167 creator A5009631016 @default.
- W3160624167 creator A5033533137 @default.
- W3160624167 creator A5073639584 @default.
- W3160624167 creator A5085041334 @default.
- W3160624167 date "2020-09-27" @default.
- W3160624167 modified "2023-09-27" @default.
- W3160624167 title "The thermal evolution of planetesimals during accretion and differentiation: consequences for dynamo generation by thermally-driven convection." @default.
- W3160624167 doi "https://doi.org/10.1002/essoar.10504425.1" @default.
- W3160624167 hasPublicationYear "2020" @default.
- W3160624167 type Work @default.
- W3160624167 sameAs 3160624167 @default.
- W3160624167 citedByCount "0" @default.
- W3160624167 crossrefType "posted-content" @default.
- W3160624167 hasAuthorship W3160624167A5009631016 @default.
- W3160624167 hasAuthorship W3160624167A5033533137 @default.
- W3160624167 hasAuthorship W3160624167A5073639584 @default.
- W3160624167 hasAuthorship W3160624167A5085041334 @default.
- W3160624167 hasBestOaLocation W31606241671 @default.
- W3160624167 hasConcept C10899652 @default.
- W3160624167 hasConcept C115260700 @default.
- W3160624167 hasConcept C121332964 @default.
- W3160624167 hasConcept C127313418 @default.
- W3160624167 hasConcept C135757623 @default.
- W3160624167 hasConcept C151730666 @default.
- W3160624167 hasConcept C16942324 @default.
- W3160624167 hasConcept C190799397 @default.
- W3160624167 hasConcept C539450922 @default.
- W3160624167 hasConcept C57879066 @default.
- W3160624167 hasConcept C62520636 @default.
- W3160624167 hasConcept C68246699 @default.
- W3160624167 hasConcept C75876914 @default.
- W3160624167 hasConcept C77928131 @default.
- W3160624167 hasConcept C8058405 @default.
- W3160624167 hasConcept C87355193 @default.
- W3160624167 hasConceptScore W3160624167C10899652 @default.
- W3160624167 hasConceptScore W3160624167C115260700 @default.
- W3160624167 hasConceptScore W3160624167C121332964 @default.
- W3160624167 hasConceptScore W3160624167C127313418 @default.
- W3160624167 hasConceptScore W3160624167C135757623 @default.
- W3160624167 hasConceptScore W3160624167C151730666 @default.
- W3160624167 hasConceptScore W3160624167C16942324 @default.
- W3160624167 hasConceptScore W3160624167C190799397 @default.
- W3160624167 hasConceptScore W3160624167C539450922 @default.
- W3160624167 hasConceptScore W3160624167C57879066 @default.
- W3160624167 hasConceptScore W3160624167C62520636 @default.
- W3160624167 hasConceptScore W3160624167C68246699 @default.
- W3160624167 hasConceptScore W3160624167C75876914 @default.
- W3160624167 hasConceptScore W3160624167C77928131 @default.
- W3160624167 hasConceptScore W3160624167C8058405 @default.
- W3160624167 hasConceptScore W3160624167C87355193 @default.
- W3160624167 hasFunder F4320334631 @default.
- W3160624167 hasLocation W31606241671 @default.
- W3160624167 hasLocation W31606241672 @default.
- W3160624167 hasLocation W31606241673 @default.
- W3160624167 hasLocation W31606241674 @default.
- W3160624167 hasOpenAccess W3160624167 @default.
- W3160624167 hasPrimaryLocation W31606241671 @default.
- W3160624167 hasRelatedWork W161922605 @default.
- W3160624167 hasRelatedWork W2090098653 @default.
- W3160624167 hasRelatedWork W2090955502 @default.
- W3160624167 hasRelatedWork W2332225872 @default.
- W3160624167 hasRelatedWork W2765552048 @default.
- W3160624167 hasRelatedWork W2883536086 @default.
- W3160624167 hasRelatedWork W3043437720 @default.
- W3160624167 hasRelatedWork W4206253348 @default.
- W3160624167 hasRelatedWork W60907613 @default.
- W3160624167 hasRelatedWork W627628816 @default.
- W3160624167 isParatext "false" @default.
- W3160624167 isRetracted "false" @default.
- W3160624167 magId "3160624167" @default.
- W3160624167 workType "article" @default.