Matches in SemOpenAlex for { <https://semopenalex.org/work/W159619314> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W159619314 abstract "In traditional substorm theories the growth phase is driven by an extended period of southward IMF, which transfers large amounts of re-connected magnetic flux into the magnetotail. The subsequent substorm onset may be triggered by a northward turning of the IMF. We investigate the possibility that variations in dynamic pressure may produce these same effects for some substorms lacking a clear IMF Bz signature for both the growth phase and the onset. A sustained increase in dynamic pressure may raise the energy stored in the compressed magnetosphere system (similar to the growth phase), while a subsequent decrease in dynamic pressure may allow some of this stored energy to be released, possibly triggering a substorm. We present a global magnetospheric simulation of such a substorm, which was also imaged by the Ultraviolet Imager (UVI) on the Polar spacecraft. The plasma density rapidly doubled about 90 minutes before the substorm onset with relatively little change in the solar wind velocity and the IMF during this period. Likewise, a sudden decrease in the density almost back to the original levels occurred close to the time of substorm onset, again with no significant change in solar wind velocity or IMF, and thus this dynamic pressure drop may have triggered the substorm. We investigate whether the resulting dynamic pressure increase in the simulation produces a growth phase, a feature that is very successfully modeled by global magnetospheric simulations. We also search for the signature of substorm onset in diagnostics such as the field-aligned currents and the position of the neutral line, if any, in the magnetotail." @default.
- W159619314 created "2016-06-24" @default.
- W159619314 creator A5004695047 @default.
- W159619314 creator A5024922795 @default.
- W159619314 creator A5035558738 @default.
- W159619314 creator A5036555634 @default.
- W159619314 creator A5080653933 @default.
- W159619314 date "1998-01-01" @default.
- W159619314 modified "2023-09-27" @default.
- W159619314 title "A Substorm Triggered by a Sudden Drop in Dynamic Pressure" @default.
- W159619314 hasPublicationYear "1998" @default.
- W159619314 type Work @default.
- W159619314 sameAs 159619314 @default.
- W159619314 citedByCount "1" @default.
- W159619314 crossrefType "journal-article" @default.
- W159619314 hasAuthorship W159619314A5004695047 @default.
- W159619314 hasAuthorship W159619314A5024922795 @default.
- W159619314 hasAuthorship W159619314A5035558738 @default.
- W159619314 hasAuthorship W159619314A5036555634 @default.
- W159619314 hasAuthorship W159619314A5080653933 @default.
- W159619314 hasConcept C108411613 @default.
- W159619314 hasConcept C115260700 @default.
- W159619314 hasConcept C121332964 @default.
- W159619314 hasConcept C130443932 @default.
- W159619314 hasConcept C157899998 @default.
- W159619314 hasConcept C172860338 @default.
- W159619314 hasConcept C44870925 @default.
- W159619314 hasConcept C57879066 @default.
- W159619314 hasConcept C62520636 @default.
- W159619314 hasConcept C8058405 @default.
- W159619314 hasConceptScore W159619314C108411613 @default.
- W159619314 hasConceptScore W159619314C115260700 @default.
- W159619314 hasConceptScore W159619314C121332964 @default.
- W159619314 hasConceptScore W159619314C130443932 @default.
- W159619314 hasConceptScore W159619314C157899998 @default.
- W159619314 hasConceptScore W159619314C172860338 @default.
- W159619314 hasConceptScore W159619314C44870925 @default.
- W159619314 hasConceptScore W159619314C57879066 @default.
- W159619314 hasConceptScore W159619314C62520636 @default.
- W159619314 hasConceptScore W159619314C8058405 @default.
- W159619314 hasLocation W1596193141 @default.
- W159619314 hasOpenAccess W159619314 @default.
- W159619314 hasPrimaryLocation W1596193141 @default.
- W159619314 hasRelatedWork W1584877423 @default.
- W159619314 hasRelatedWork W1973437433 @default.
- W159619314 hasRelatedWork W1985229723 @default.
- W159619314 hasRelatedWork W1987048185 @default.
- W159619314 hasRelatedWork W1999305617 @default.
- W159619314 hasRelatedWork W2006520522 @default.
- W159619314 hasRelatedWork W2017932010 @default.
- W159619314 hasRelatedWork W2025982566 @default.
- W159619314 hasRelatedWork W2033261042 @default.
- W159619314 hasRelatedWork W2036243178 @default.
- W159619314 hasRelatedWork W2072178403 @default.
- W159619314 hasRelatedWork W2090085901 @default.
- W159619314 hasRelatedWork W2154879447 @default.
- W159619314 hasRelatedWork W2346978982 @default.
- W159619314 hasRelatedWork W2466402948 @default.
- W159619314 hasRelatedWork W2553065484 @default.
- W159619314 hasRelatedWork W2618192731 @default.
- W159619314 hasRelatedWork W2740426739 @default.
- W159619314 hasRelatedWork W3004138002 @default.
- W159619314 hasRelatedWork W3049581684 @default.
- W159619314 isParatext "false" @default.
- W159619314 isRetracted "false" @default.
- W159619314 magId "159619314" @default.
- W159619314 workType "article" @default.