Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
 Lokale TagsFreigabegeschichteDetailsÜbersicht
  Modelling dynamic rupture in olivine-based subducting slabs: From a microscopic to a mesoscopic perspective

de la Serna Valdés, J., Mattesini, M., Buforn, E., López Sánchez, C., Pro, C., Udías, A. (2023): Modelling dynamic rupture in olivine-based subducting slabs: From a microscopic to a mesoscopic perspective, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-0919

Item is

 

einblenden: alle ausblenden: alle

Basisdaten

einblenden: ausblenden:
Datensatz-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016541 Versions-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016541_2
Genre: Konferenzbeitrag

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
de la Serna Valdés, Jaime1, Autor
Mattesini, Maurizio1, Autor
Buforn, Elisa1, Autor
López Sánchez, Carolina1, Autor
Pro, Carmen1, Autor
Udías, Agustín1, Autor
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: A common mineral for subducting material is olivine, which is a magnesium-ferrosilicate with varying amounts of iron and magnesium. The purpose of this work is to investigate the rigid rupture process of crystalline olivine from an atomistic perspective and to estimate the energy released during the breakdown process of the material. In this study, ab initio calculations have been performed based on the well-known Density Functional Theory (DFT). As a first step, we calculated the electro-structural energy minimum of the unit cell of olivine at 24 GPa, which corresponds to the pressure condition of the subducting slab at a depth of 700 km. To obtain reference stress-strain curves, the relaxed unit cell was strained under a variety of shear distortions. In this way, we were able to calculate the theoretical total energy released by the subducting material during atomistic rupture. To broaden the atomistic energy budget to a macroscale rupture mechanism (i.e., with the size of the fault), we developed a modular multiscale fracture model. Several grain ruptures are simulated in this manner, with each grain containing different crystallographic directions within a polycrystalline olivine matrix. A stochastic simulation scheme was applied to this model to compute multiple grain ruptures and thereby estimate the energy involved in a macroscale rupture. The results obtained were compared to the average moment-scaled functions that were obtained for very deep earthquakes in the Peruvian-Brazilian subduction zone.

Details

einblenden:
ausblenden:
Sprache(n): eng - Englisch
 Datum: 2023
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.57757/IUGG23-0919
 Art des Abschluß: -

Veranstaltung

einblenden:
ausblenden:
Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Veranstaltungsort: Berlin
Start-/Enddatum: 2023-07-11 - 2023-07-20

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Genre der Quelle: Konferenzband
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Potsdam : GFZ German Research Centre for Geosciences
Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: - Identifikator: -