H2020Индивидуална стипендия2018–2020

GEOTRIBE · Generation and Evolution Of Transform-Ridge Interaction and Behavior on Earth

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2018-04-01 → 2020-03-31
Финансиране от ЕС: 175 420 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Взаимодействието между дълбоките сили в земната мантия и повърхността определя как се формират новите граници между тектоничните плочи. Разбирането на тези процеси помага да се обяснят явления като промяната на морското равнище във времето.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Generation and Evolution Of Transform-Ridge Interaction and Behavior on Earth

Surface of the Earth is divided into a jigsaw of plates that move relative to each other. While surface tectonics and mechanics of the plate processes influence the mantle dynamics, the deep mantle forces in the interior of the Earth are at the origin of its tectonic manifestations at the surface. Coupling Earth mantle dynamics with its surface response is critical for understanding of some fundamental features on Earth such as sea level change over time or postglacial rebound. Plate tectonics is a key process in linking the deep Earth to its surface. The theory of plate tectonics is successful in explaining multiple geophysical and geological phenomena. Yet, the fundamental scientific questions about the mechanics of plate tectonics and formation of new plate boundaries is still largely debated and remain unresolved. The goals of this project are to unravel how the interaction between the deep forces and lithospheric mantle shape the evolution of plate tectonics and to explain how new plate boundaries are generated in global context taking into account surface and deep forces within the mantle. To quantify the conditions under which the new plate boundaries are formed and characterize their long-term evolution, the fellow used the state-of-the-art numerical models. The synthetic results obtained using high resolution massively parallel numerical code StagYY were confronted with data retrieved from plate tectonic reconstructions.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Transform-ridge orthogonal patterns are fundamental features of the Earth’s plate tectonics. Although transform faults play a critical role in the organization of plate motions and are seismically active boundaries, it is still enigmatic how they form and why they are maintained. So far, only regional-scale models of transform fault inception and evolution exist. As the result, relationships of these structures with global mantle flow and large-scale plate kinematics remain unknown. The aim of this project is to advance our knowledge on global physical controls for the transform-ridge systems inception, dynamics and variability. I will take into account global forces to investigate nucleation and evolution of transform-ridge interactions, thus bridging the gap between regional and global models. I will use my long-term expertise in geophysical modeling to implement new physics (such as rock damage and magmatism) in the state-of-the-art convection code developed at ETH Zurich. I will run high-resolution 3D spherical models of global mantle convection to build the first database of simulated global transform-ridge patterns showing what factors influence the spacing and offset of transform faults. I will develop methods to compare the synthetic data with collected observed field data (bathymetry, gravity data, seismicity) to assess which physical processes (e.g. crustal melting, rock healing) control the formation and distribution of ridge-transform centers. Accounting for the global mantle and plate tectonic forces to explain transform fault dynamics is an unprecedented approach that is possible only now due to advances in physical properties of mantle rocks, numerical technics and increasing available computational power. Through this multidisciplinary project I aim at the first assessment of how transform-ridge system guides the evolution of plates for long periods with the scope of keeping Europe at the vanguard of the tectonics and geodynamical modeling research.

Оригинален текст от CORDIS (на английски).

Участници

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH · ZuerichКоординаторШвейцария