Results 11 to 20 of about 31,676 (285)

Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 27-82., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm   +2 more
wiley  

+2 more sources

High-Fidelity Archeointensity Results for the Late Neolithic Period From Central China [PDF]

open access: yes, 2020
Archeomagnetism focuses on exploring high-resolution variations of the geomagnetic field over hundreds to thousands of years. In this study, we carried out a comprehensive study of chronology, absolute and relative paleointensity on a late Neolithic site
Cai, S   +6 more
core   +1 more source

A gaussian model for simulated geomagnetic field reversals [PDF]

open access: yesPhysics of the Earth and Planetary Interiors, 2016
Field reversals are the most spectacular changes in the geomagnetic field but remain little understood. Paleomagnetic data primarily constrain the reversal rate and provide few additional clues. Reversals and excursions are characterized by a low in dipole moment that can last for some 10kyr.
Wicht, J., Meduri, D.
openaire   +4 more sources

Regional Geomagnetic Field Model for Croatia at 2009.5 [PDF]

open access: yesActa Geophysica, 2016
Geomagnetic data of north, east and vertical components at Croatian repeat stations and ground survey sites, as well as European geomagnetic observatories and repeat stations, were used to obtain a regional geomagnetic model over Croatia at 2009.5 epoch.
Vujić, Eugen   +2 more
openaire   +2 more sources

Statistical evaluation of global geomagnetic field models over Southern Africa during 2015

open access: yesEarth, Planets and Space, 2017
Global geomagnetic field models using spherical harmonic basis functions are important in space physics research, space weather and applications like navigation and mineral resources exploration.
P. B. Kotzé
doaj   +1 more source

The combined processing of geomagnetic intensity vector projections and absolute magnitude measurements [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2019
A method for the combined processing measurements of the projections and the absolute magnitudes of geomagnetic field intensity vectors, based on mathematical technology of local approximation models, is proposed.
V. G. Getmanov   +4 more
doaj   +1 more source

Can core-surface flow models be used to improve the forecast of the Earth's main magnetic field? [PDF]

open access: yes, 2008
[1] Geomagnetic main field models used for navigation are updated every 5 years and contain a forecast of the geomagnetic secular variation for the upcoming epoch. Forecasting secular variation is a difficult task.
Alexandrescu   +46 more
core   +5 more sources

Modeling and Predicting the Short‐Term Evolution of the Geomagnetic Field [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2018
AbstractWe propose a reduced dynamical system describing the coupled evolution of fluid flow and magnetic field at the top of the Earth's core between the years 1900 and 2014. The flow evolution is modeled with a first‐order autoregressive process, while the magnetic field obeys the classical frozen flux equation.
Bärenzung, Julien   +4 more
openaire   +6 more sources

Research on WMM-00 geomagnetic field model accuracy in Lithuanian territory

open access: yesGeodesy and Cartography, 2012
The development of surveying technology gives the possibility for a detailed exploration of physical processes on the Earth’s surface. The satellite geomagnetic surveys, the precise geomagnetic surveys in magnetic observatories, the measurement at repeat
Romuald Obuchovski
doaj   +1 more source

Co-estimation of geomagnetic field and in-orbit fluxgate magnetometer calibration parameters

open access: yesEarth, Planets and Space, 2020
For the past 20 years, state of the art geomagnetic core field models have relied heavily on magnetic measurements made from space-based instrumentation.
Patrick Alken   +2 more
doaj   +1 more source

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