Results 81 to 90 of about 10,218,549 (296)

Loess Studies in Aotearoa New Zealand

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
Loess in Aotearoa New Zealand (ANZ) has been studied since its first documented recognition (on Banks Peninsula) in 1878 by Julius von Haast. A decade later, John Hardcastle revealed that southern ANZ loess was both glacial in origin and contained signals of past climates.
Brent V. Alloway   +4 more
wiley   +1 more source

Regional geomagnetic core field and secular variation model over the Iberian Peninsula from 2014 to 2020 based on the R-SCHA technique

open access: yesEarth, Planets and Space, 2023
The Earth’s magnetic field originated in the fluid core, the so-called core field, is the dominant contribution to the geomagnetic field. Since ancient times, the core geomagnetic field has been used primarily for geographical orientation and navigation ...
Marina Puente-Borque   +4 more
doaj   +1 more source

Theoretical Determination of the Boundary of the Geomagnetic Field in a Steady Solar Wind [PDF]

open access: yes, 1962
Theoretical determination of the boundary of the geomagnetic field in a steady solar ...
Briggs, B. R., Spreiter, J. R.
core   +1 more source

The United States Magnetotelluric Array and the National Impedance Map

open access: yesReviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract The United States Magnetotelluric Array (USMTArray) data set, collected in the years 2006–2024, consists of more than 1,700 long‐period magnetotelluric stations covering the entirety of the contiguous United States on a quasi‐regular 70 km grid.
Anna Kelbert   +7 more
wiley   +1 more source

First Results of a New Inversion Tool for Thermospheric Neutral Mass Density Computations During Severe Geomagnetic Storms

open access: yesAGU Advances, Volume 7, Issue 3, June 2026.
Abstract In Low Earth Orbit (LEO), atmospheric drag is the dominant source of trajectory prediction error below approximately 700 km altitude, primarily due to inaccuracies in thermospheric density models. This work presents a method for temporally deconvolving Energy Dissipation Rates (EDRs) to produce single‐satellite density estimates, which can be ...
S. Mutschler   +6 more
wiley   +1 more source

Strong geomagnetic disturbances and induced currents on Earth surface [PDF]

open access: yes, 2008
Long-term variations in strong geomagnetic storms are analyzed and linked to electric fields induced on Earth. In fact, geomagnetic disturbances generate electric fields that drive currents in the Earth which may have significant effects on electrical ...
Elias, Ana Georgina   +1 more
core  

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

open access: yesArchaeometry, Volume 68, Issue 3, Page 317-329, June 2026.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río   +6 more
wiley   +1 more source

Mechanisms of Body Alignment in a Diurnal Songbird Migrant

open access: yesEthology, Volume 132, Issue 6, Page 399-411, June 2026.
The graphical abstract illustrates the body alignment mechanism of a diurnal songbird migrant, the dunnock (Prunella modularis). Dunnocks consistently expressed an angular body alignment, with inter‐individual variation at the level of the population.
Christina Spiliopoulou   +3 more
wiley   +1 more source

Nitric Oxide Radiative Relaxation Time: Damping Timescales of Lower Thermospheric Thermal Perturbations

open access: yesGeophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Nitric oxide (NO) radiative cooling governs much of the energy budget in the Earth's lower thermosphere and damps out temperature perturbations. The radiative relaxation time (RRT), the timescale that defines how efficiently infrared radiation damps out the perturbations to the thermal structure to 1/e of the perturbation's initial value, is ...
Ningchao Wang   +4 more
wiley   +1 more source

Twenty years of geomagnetic field observations at Mario Zucchelli Station (Antarctica)

open access: yesAnnals of Geophysics, 2009
During the 1986-87 austral summer a geomagnetic observatory was installed at Terra Nova Bay. During the first<br />years both geomagnetic field time variation monitoring and absolute measurements were carried out only during<br />summer ...
Lucia Santarelli   +3 more
doaj   +1 more source

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