Blar i Bergen Open Research Archive på tittel
Viser treff 22229-22248 av 34272
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Observational evidence for throat aurora being associated with magnetopause reconnection
(Peer reviewed; Journal article, 2019)Throat auroras have been suggested to be related to indentations on the subsolar magnetopause. However, the indentation generation process and the resulting ionospheric responses have remained unknown. An EISCAT Svalbard ... -
Observational Evidence of Magnetic Reconnection in the Terrestrial Bow Shock Transition Region
(Journal article; Peer reviewed, 2019)We report evidence of magnetic reconnection in the transition region of the Earth's bow shock when the angle between the shock normal and the immediate upstream magnetic field is 65°. An ion‐skin‐depth‐scale current sheet ... -
An observational study of immigrant mortality differences in Norway by reason for migration, length of stay and characteristics of sending countries
(Peer reviewed; Journal article, 2018-04-17)Background: Knowledge of mortality differentials in immigrant groups depending on their reason for migration, length of stay in host countries and characteristics of sending countries may be beneficial for policy interventions ... -
Observational validation of the diffusive convection flux laws in the Amundsen Basin, Arctic Ocean
(Peer reviewed; Journal article, 2015-12)The low levels of mechanically driven mixing in many regions of the Arctic Ocean make double diffusive convection virtually the only mechanism for moving heat up from the core of Atlantic Water towards the surface. In an ... -
Observations of Asymmetric Lobe Convection for Weak and Strong Tail Activity
(Journal article; Peer reviewed, 2019)In this study we use high‐quality convection data from the Electron Drift Instrument on board Cluster to investigate how near‐Earth tail activity affects the average convection pattern in the magnetotail lobes when the ... -
Observations of asymmetries in ionospheric return flow during different levels of geomagnetic activity
(Peer reviewed; Journal article, 2018-06)It is known that the magnetic field of the Earth's closed magnetosphere can be highly displaced from the quiet‐day configuration when interacting with the interplanetary magnetic field (IMF), an asymmetry largely controlled ... -
Observations of barotropic oscillations and their influence on mixing in the Faroe bank channel overflow region
(Peer reviewed; Journal article, 2013)Observations of hydrography, currents, and microstructure are presented together with sea surface height (SSH) patterns from concurrent satellite tracks to describe the subinertial oscillations in the region downstream of ... -
Observations of Blue Corona Discharges in Thunderclouds
(Journal article; Peer reviewed, 2022)Blue electric streamer discharges in the upper reaches of thunderclouds are observed as flashes of 337.0 nm (blue) with faint or no emissions of 777.4 nm (red). Analyzing 3 years of measurements by the Atmosphere-Space ... -
Observations of bridge stay cable vibrations in dry and wet conditions: A case study
(Journal article; Peer reviewed, 2021-04-01)The characteristics of wind- and rain-wind-induced vibrations of bridge stay cables are studied by using ambient vibrations records acquired on a cable-stayed bridge. Mean wind speed and wind-cable angle, as well as the ... -
Observations of brine plumes below Arctic sea ice
(Journal article, 2017)In sea ice, interconnected pockets and channels of brine are surrounded by fresh ice. Over time, brine is lost by gravity drainage and flushing. The timing of salt release and its interaction with the underlying water can ... -
Observations of Electron Precipitation During Pulsating Aurora and Its Chemical Impact
(Journal article; Peer reviewed, 2020)Pulsating auroras (PsAs) are low‐intensity diffuse aurora, which switch on and off with a quasiperiodic oscillation period from a few seconds to ∼10 s. They are predominantly observed after magnetic midnight, during the ... -
Observations of energetic turbulence on the Weddell Sea continental slope
(Peer reviewed; Journal article, 2016-01-23)Turbulence profile measurements made on the upper continental slope and shelf of the southeastern Weddell Sea reveal striking contrasts in dissipation and mixing rates between the two sites. The mean profiles of dissipation ... -
Observations of highly regular oscillations in the overflow plume downstream of the Faroe Bank Channel
(Peer reviewed; Journal article, 2006-12-23)The Faroe Bank Channel (FBC) is the deepest connection between the Atlantic Ocean and the Nordic Seas. This work describes the dynamic properties of the plume of dense overflow water descending from the Faroe Bank Channel ... -
Observations of planetary waves in the mesosphere-lower thermosphere during stratospheric warming events
(Peer reviewed; Journal article, 2015-05-04)This study investigates the effect of stratospheric sudden warmings (SSWs) on planetary wave (PW) activity in the mesosphere–lower thermosphere (MLT). PW activity near 95 km is derived from meteor wind data using a chain ... -
Observations of precipitation energies during different types of pulsating aurora
(Journal article; Peer reviewed, 2020)Pulsating aurora (PsA) is a diffuse type of aurora with different structures switching on and off with a period of a few seconds. It is often associated with energetic electron precipitation (>10 keV) resulting in the ... -
Observations of sunlit N2+ aurora at high altitudes during the RENU2 flight
(Journal article; Peer reviewed, 2021)We present measurements of sunlit aurora during the launch of the Rocket Experiment for Neutral Upwelling 2 (RENU2) on the 13 December 2015, 07:34 UTC. The in situ auroral conditions coincide with those of sunlit aurora ... -
Observations of the Storfjorden overflow
(Peer reviewed; Journal article, 2003)The mixing and spreading of the Storfjorden overflow were investigated with density and horizontal velocity profiles collected at closely spaced stations. The dense bottom water generated by strong winter cooling, enhanced ... -
Observations of Turbulence at a Near-Surface Temperature Front in the Arctic Ocean
(Journal article; Peer reviewed, 2020)High-resolution ocean temperature, salinity, current, and turbulence data were collected at an Arctic thermohaline front in the Nansen Basin. The front was close to the sea ice edge and separated the cold and fresh surface ... -
Observations on the reconstruction of the Late Classical temple of Athena Alea
(Papers and Monographs from the Norwegian Institute at Athens. series 4o, volume 4, Chapter, 2014)