Results 11 to 20 of about 5,872 (180)

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 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.
Alexander J. Dickson   +2 more
wiley  

+3 more sources

A statistical study of polar cap flow channels observed in both hemispheres using SuperDARN radars

open access: yesJournal of Space Weather and Space Climate, 2022
This paper details the first large-scale, interhemispheric statistical study into ionospheric fast flow (>900 m/s) channels in the polar cap using the SuperDARN radar network.
Herlingshaw Katie   +4 more
doaj   +1 more source

Electron precipitation characteristics during isolated, compound, and multi-night substorm events [PDF]

open access: yesAnnales Geophysicae, 2021
A set of 24 isolated, 46 compound, and 36 multi-night substorm events from the years 2008–2013 have been analysed in this study. Isolated substorm events are defined as single expansion–recovery phase pairs, compound substorms consist of multiple phase ...
N. Partamies   +8 more
doaj   +1 more source

Space and atmospheric physics on Svalbard: a case for continued incoherent scatter radar measurements under the cusp and in the polar cap boundary region

open access: yesProgress in Earth and Planetary Science, 2023
Incoherent scatter radars (ISRs) represent the only instrument (both ground and space based) capable of making high temporal and spatial resolution measurements of multiple atmospheric parameters—such as densities, temperatures, particle velocities, mass
Lisa Baddeley   +9 more
doaj   +1 more source

Reconfiguration and closure of lobe flux by reconnection during northward IMF: possible evidence for signatures in cusp/cleft auroral emissions [PDF]

open access: yesAnnales Geophysicae, 1999
Observations are presented of the response of the dayside cusp/cleft aurora to changes in both the clock and elevation angles of the interplanetary magnetic field (IMF) vector, as monitored by the WIND spacecraft.
M. Lockwood, M. Lockwood, J. Moen
doaj   +1 more source

Auroral all-sky camera calibration [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2014
A two-step procedure to calibrate the spectral sensitivity to visible light of auroral all-sky cameras is outlined. Center pixel response is obtained by the use of a Lambertian surface and a standard 45 W tungsten lamp.
F. Sigernes   +14 more
doaj   +1 more source

Pseudoxenochalara gen. nov. (Dermateaceae, Helotiales), with P. grumantiana sp. nov. from the Svalbard archipelago [PDF]

open access: yesBotanica Serbica, 2023
The family Dermateaceae belongs to the Helotiales order, the class Leotiomycetes, and consists of 14 genera. In this study, we introduce the new genus Pseudoxenochalara gen. nov.
Vadim Alexandrovich Iliushin   +1 more
doaj   +1 more source

Jupyter Book as an open online teaching environment in the geosciences: lessons learned from Geo-SfM and Geo-UAV [PDF]

open access: yesGeoscience Communication
Together with our students, we co-created two open-access geoscientific course modules using the Jupyter Book environment. We also assessed the Jupyter Book environment, integrated with GitHub to facilitate versioning, for its suitability for co-creation
P. Betlem   +6 more
doaj   +1 more source

The Ice‐Free Topography of Svalbard [PDF]

open access: yesGeophysical Research Letters, 2018
Abstract We present a first version of the Svalbard ice‐free topography (SVIFT1.0) using a mass conserving approach for mapping glacier ice thickness. SVIFT1.0 is informed by more than 1 million point measurements, totalling more than 8,700 km of thickness profiles.
Johannes J. Fürst   +25 more
openaire   +8 more sources

Snow research in Svalbard?an overview [PDF]

open access: yesPolar Research, 2003
This paper summarizes the most significant snow-related research that has been conducted in Svalbard. Most of the research has been performed during the 1990s and includes investigations of snow distribution, snow-melt, snow pack characteristics, remote sensing of snow and biological studies where snow conditions play an important role.
Winther, Jan-Gunnar   +7 more
openaire   +3 more sources

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