ORCID Profile
0000-0002-3207-2901
Current Organisations
Stanford University
,
National University of Defense Technology
,
GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel
,
China University of Geosciences
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Publications
Control on off-rift magmatism: A case study of the Baikal Rift Zone
Publisher: Elsevier BV
Date: 2018
TOPO-EUROPE: The geoscience of coupled deep Earth-surface processes
Publisher: Elsevier BV
Date: 07-2007
ScanArray—A Broadband Seismological Experiment in the Baltic Shield
Publisher: Seismological Society of America (SSA)
Date: 05-05-2021
DOI: 10.1785/0220210015
Abstract: The ScanArray international collaborative program acquired broadband seismological data at 192 locations in the Baltic Shield during the period between 2012 and 2017. The main objective of the program is to provide seismological constraints on the structure of the lithospheric crust and mantle as well as the sublithospheric upper mantle. The new information will be applied to studies of how the lithospheric and deep structure affect observed fast topographic change and geological-tectonic evolution of the region. The program also provides new information on local seismicity, focal mechanisms, and seismic noise. The recordings are generally of very high quality and are used for analysis by various seismological methods, including P- and S-wave receiver functions for the crust and upper mantle, surface wave and ambient noise inversion for seismic velocity, body-wave P- and S-wave tomography for upper mantle velocity structure using ray and finite frequency methods, and shear-wave splitting measurements for obtaining bulk anisotropy of the upper and lowermost mantle. Here, we provide a short overview of the data acquisition and initial analysis of the new data, together with an ex le of integrated seismological results obtained by the project group along a representative ∼1800-km-long profile across most of the tectonic provinces in the Baltic Shield between Denmark and the North Cape. The first models support a sub ision of the Paleoproterozoic Svecofennian province into three domains, where the highest topography of the Scandes mountain range in Norway along the Atlantic Coast has developed solely in the southern and northern domains, whereas the topography is more subdued in the central domain.
Artificial intelligence enabled cyber security defense for smart cities: A novel attack detection framework based on the MDATA model
Publisher: Elsevier BV
Date: 09-2023
Seismic velocity model of the crust and upper mantle along profile PANCAKE across the Carpathians between the Pannonian Basin and the East European Craton
Publisher: Elsevier BV
Date: 11-2013
DOBRE-2 WARR profile: the Earth's upper crust across Crimea between the Azov Massif and the northeastern Black Sea
Publisher: Geological Society of London
Date: 03-02-2016
DOI: 10.1144/SP428.11
The Mid‐Lithospheric Discontinuity Caused by Channel Flow in Proto‐Cratonic Mantle
Publisher: American Geophysical Union (AGU)
Date: 28-03-2023
DOI: 10.1029/2022JB026202
Abstract: Global geophysical observations show the presence of the enigmatic mid‐lithospheric discontinuity (MLD) at depths of ca. 80–150 km which may question the stability and internal structure of the continental lithosphere. While various mechanisms may explain the MLD, the dynamic processes leading to the seismic observations are unclear. Here we present a physical mechanism for the origin of MLD by channel flow in the cratonic mantle lithosphere, triggered by convective instabilities at cratonic margins in the Archean when the mantle was hot. Our numerical modeling shows that the top of the frozen‐in channel flow creates a shear zone at a depth comparable to the globally observed seismic MLD. Grain size reduction in the shear zone and accumulation of percolated melts or fluids along the channel top may reduce seismic wave speeds as observed below the MLD, while the channel flow itself may explain radial anisotropy of seismic wave speeds and change in direction of the seismic anisotropic fast axis. The proposed mechanism is valid for a broad range of physically realistic parameters and that MLD may have been preserved since its formation in the Archean. The intensity of the channel flow ceased with time due to secular cooling of the Earth's interior. The new mechanism may reshape our understanding of the evolution and stability of cratonic lithosphere.
100 years of seismic research on the Moho
Publisher: Elsevier BV
Date: 12-2013
ScanArray - Seismological study of the connection between topographic change and deep structure in Fennoscandia
Publisher: Copernicus GmbH
Date: 04-03-2021
DOI: 10.5194/EGUSPHERE-EGU21-14385
Abstract: & & The Baltic Shield is located in northern Europe. It was formed by amalgamation of a series of terranes and microcontinents during the Archean to the Paleoproterozoic, followed by significant modification in Neoproterozoic to Paleozoic time. The Baltic Shield includes a high mountain range, the Scandes, along its western North Atlantic coast, despite being a stable craton located far from any active plate boundary.& & & & The ScanArray international collaborative program has acquired broad band seismological data at 192 locations in the Baltic Shield during the period between 2012 and 2017. The main objective of the program is to provide seismological constraints on the structure of the lithospheric crust and mantle as well as the sublithospheric upper mantle. The new information will be applied to studies of how the lithospheric and deep structure affects observed fast topographic change and geological-tectonic evolution of the region. The recordings are of very high quality and are used for analysis by suite of methods, including P- and S-wave receiver functions for the crust and upper mantle, surface wave and ambient noise inversion for seismic velocity, body wave P- and S- wave tomography for upper mantle velocity structure, and shear-wave splitting measurements for obtaining bulk anisotropy of the upper and lower mantle. Here we provide a short overview of the data acquisition and initial analysis of the new data with focus on parameters that constrain the fast topographic change in the Scandes.& & & & & & &
New ocean spreading beneath the Arabian Shield controlled by LAB-structure
Publisher: Copernicus GmbH
Date: 15-05-2023
DOI: 10.5194/EGUSPHERE-EGU23-5462
Abstract: Formation of new oceans by continental break-up is traditionally understood as a continuous evolution from rifting to ocean spreading. Here we show that already the break-up phase may involve a jump of extensional axis, as earlier observed in e.g. the mature North Atlantic Ocean. The Red Sea is one of few locations on Earth where a new plate boundary presently forms. The new plate boundary is already active in the southern Red Sea oceanic spreading centre, but the north-central segment is still in a continental rifting stage, and the associated magmatism is offset by ca 300 km into Arabia.This situation is similar to the Baikal Rift Zone, where the rift-related magmatism in the north is offset by 200-300 km into the Sayan-Baikal Fold Belt, but not offset in the south. Our earlier numerical modelling has shown that the location of the magmatism may be controlled by thinning of the lithosphere from the Siberian Craton into the fold belt, whereas the rift location is controlled by pre-existing crustal scale weakness zones (Yang et al., 2018).Here, we propose a new geodynamic model for the evolution of the Red Sea region which is consistent with all geological and geophysical observations. We demonstrate that the north-central rift is a transient feature that will not develop into coincident ocean spreading. Instead, a new plate boundary forms across Arabia. Our numerical experiments predict that in 1& #8211 Myr the north-central extensional axis will jump ~300 km eastward into Arabia. The existing Ad Damm strike-slip fault, perpendicular to the central Red Sea rift axis, will evolve into a transform fault between the on-going ocean spreading in the southern Red Sea and the future spreading in north-central Arabia.We demonstrate that crustal-scale weakness zones can control lithosphere extension and lead to long-distance jumps of extensional axes in continental lithosphere not affected by hotspots. Therefore, our model also provides theoretical basis for understanding dynamics and mechanisms of the transition from rifting to continental break-up at passive continental margins not affected by hotspots.
Related Organisations
GEOMAR Helmholtz-Zentrum Für Ozeanforschung Kiel
Location: No location found
Androfert Centro De Referência De Reprodução Masculina
Location: Brazil
US Geological Survey Northwest Region
Location: United States of America
Related Funding Activities
No related grants have been discovered for Irina M. Artemieva.