Results 71 to 80 of about 20,697,483 (185)
Recent magnetic satellite missions facilitate new birth of large-scale geomagnetic field models and their applications to tectonics. Here, we directly compare the global geomagnetic field models NGDC-720 with the tectonics and seismicity in Mainland ...
Yu Lei, Liguo Jiao, Huaran Chen
doaj +1 more source
The CHAOS-7 geomagnetic field model and observed changes in the South Atlantic Anomaly
We present the CHAOS-7 model of the time-dependent near-Earth geomagnetic field between 1999 and 2020 based on magnetic field observations collected by the low-Earth orbit satellites Swarm, CryoSat-2, CHAMP, SAC-C and Ørsted, and on annual differences of
Christopher C. Finlay +6 more
doaj +1 more source
Flip‐Flop Detachments Require Moderate Strength Contrasts Between Fault Zone and Fault Blocks
Abstract Large‐offset detachment faults frequently occur at slow‐ and ultraslow‐spreading mid‐ocean ridges, especially where magma supply is limited. Observations show that detachments at ultraslow ridges often alternate in polarity (“flip‐flop” regime), but the mechanical controls governing their formation remain poorly understood.
A. Demont, J.‐A. Olive, M. Cannat
wiley +1 more source
A multisource geomagnetic field model incorporating ocean circulation-induced magnetic field
The movement of global ocean circulation in the Earth’s main magnetic field generates a measurable induced magnetic field (about 2 nT at geomagnetic satellite altitudes).
HongBo Yao +4 more
doaj +1 more source
Abstract Distributed basaltic volcanic fields commonly host minor but significant silicic magmas, the origin of which remains debated. At Harrat Khaybar (western Saudi Arabia; ca. 1.7 Ma to present), volcanic activity erupted compositions range from alkali olivine basalt to trachyte and comendite.
Abdullah Alohali +5 more
wiley +1 more source
Comparison of eight years magnetic field data from Cluster with Tsyganenko models in the inner magnetosphere [PDF]
Eight years of magnetic field data, taken while the four Cluster spacecraft pass through, or adjacent to, the equatorial ring current, have been surveyed to investigate the effects on the Earth's magnetic field of the externally driven current systems
Holme R +11 more
core +2 more sources
The global lithospheric field modeling based on MSS-1 and other satellites’ gradient data
We combine gradient data from the Macau Science Satellite-1 (MSS-1), CHAllenging Minisatellite Payload (CHAMP), Swarm-A, and Swarm-C satellites to develop a 110-degree lithospheric magnetic field model. We then comprehensively evaluate the performance of
YuXuan Lin +4 more
doaj +1 more source
Abstract The northern extent of Greater India is a critical, yet highly debated, parameter for reconstructing the India‐Asia collision. Previous paleomagnetic estimates, including the fill‐the‐gap and fixed great circle approaches, yield widely varying results, spanning from ∼200 to ∼3,000 km. These large discrepancies stem principally from two primary
Xianwei Jiao +3 more
wiley +1 more source
Time constraints on the formation of lithospheric mantle beneath cratons: a re-Os isotope and platinum group element study of peridotite xenoliths from northern Canada and Lesotho, [PDF]
Understanding the generation and evolution of cratonic lithospheric keels requires detailed knowledge of their age, timescale of formation, and the relationship between the crust and mantle part of the lithosphere.
Irvine, Gordon James
core
Abstract Ophiolitic mélanges and associated intrusions provide key archives for reconstructing the evolution of ancient ocean basins and subduction‐related mantle modification. The Hongliuhe–Niujuanzi–Xichangjing ophiolitic mélange in the central Beishan Orogen preserves important records of the Paleo‐Asian Ocean, but the timing of oceanic subduction ...
Yujia Song +4 more
wiley +1 more source

