Observations of the Abundances of Secondary Galactic Cosmic Rays from Z equals 5 to 28 Between 10 and 200 MeV/nuc Beyond the Heliopause by Voyager, Some Unexpected Anomalies and Their Interpretation Using a LBM for Galactic PropagationVoyager observations for over 3 years beyond the heliopause have started to define features of the low energy, less than 100 MeV per nuc, cosmic ray secondary nuclei that have a zero or negligibly…W. R. Webber·Dec 28, 2016SaveLearn
Space Radiation exposure calculations during different solar and galactic cosmic ray activitiesThe primary components of radiation in interplanetary space are galactic cosmic rays (GCR) and solar cosmic radiation (SCR). GCR originates from outside of our Solar System, while SCR consists of low…P. Paschalis, A. Tezari, M. Gerontidou et al.·Dec 28, 2016SaveLearn
Facilities of Athens Neutron Monitor Station to Space Weather servicesIn the frame of the comprehensive knowledge, detection and forecasting of the solar terrestrial relations as well as space weather events, the ground based measurements of the network of neutron…H. Mavromichalaki, M. Gerontidou, P. Paschalis et al.·Dec 26, 2016SaveLearn
Linking Fluid and Kinetic Scales in Solar Wind TurbulenceWe investigate possible links between the large-scale and small-scale features of solar wind fluctuations across the frequency break separating fluid and kinetic regimes. The aim is to correlate the…D. Telloni, R. Bruno·Dec 25, 2016SaveLearn
Presence of Turbulent and Ordered Local Structure within ICME shock-sheath and its Contribution in Forbush decreaseThe transient interplanetary disturbances evoke short time cosmic ray flux decrease which is known as Forbush decrease. The traditional model and understanding of Forbush decrease suggest that the…Zubair Shaikh, Anil Raghav, Ankush Bhaskar·Dec 23, 2016SaveLearn
Seasonal solar wind speeds for the last 100 years: Unique coronal hole structures during the peak and demise of the Grand Modern MaximumSolar coronal holes are sources of high-speed solar wind streams, which cause persistent geomagnetic activity especially at high latitudes. Here we estimate seasonal solar wind speeds at 1 AU for the…Kalevi Mursula, Lauri Holappa, Renata Lukianova·Dec 15, 2016SaveLearn
Automated detection of coronal mass ejections in three-dimensions using multi-viewpoint observationsA new, automated method of detecting coronal mass ejections (CMEs) in three dimensions for the LASCO C2 and STEREO COR2 coronagraphs is presented. By triangulating isolated CME signal from the three…Joe Hutton, Huw Morgan·Dec 14, 2016SaveLearn
HILDCAA* events between 1998 and 2007 and their related interplanetary magnetic field and plasma valuesWe investigate the interplanetary conditions during 135 less strict high-intensity, long-duration, continuous AE activity (HILDCAA*) events between the years 1998-2007. The HILDCAA* events were…A. Prestes, V. Klausner, A. Ojeda-Gonzalez et al.·Dec 12, 2016SaveLearn
The Interaction of Successive Coronal Mass Ejections: A ReviewWe present a review of the different aspects associated with the interaction of successive CMEs in the corona and inner heliosphere, focusing on the initiation of series of CMEs, their interaction in…Noé Lugaz, Manuela Temmer, Yuming Wang et al.·Dec 7, 2016SaveLearn
Heliosheath Processes and the Structure of the Heliopause: Modeling Energetic Particles, Cosmic Rays, and Magnetic FieldsThis paper summarizes the results obtained by the team "Heliosheath Processes and the Structure of the Heliopause: Modeling Energetic Particles, Cosmic Rays, and Magnetic Fields" supported by…N. V. Pogorelov, H. Fichtner, A. Czechowski et al.·Dec 7, 2016SaveLearn
Time Evolution of Elemental Ratios in Solar Energetic Particle eventsHeavy ion ratio abundances in Solar Energetic Particle (SEP) events, e.g.~Fe/O, often exhibit decreases over time. Using particle instruments on the ACE, SOHO and STEREO spacecraft, we analysed heavy…P. Zelina, S. Dalla, C. M. S. Cohen et al.·Dec 2, 2016SaveLearn
Variable phase propagation velocity for long-range lightning location systemThe electromagnetic wave propagation velocity at low radio frequencies is an important input parameter for lightning location systems that use time of arrival (TOA) method. This velocity is normally…Zhongjian Liu, Kuang Liang Koh, Andrew Mezentsev et al.·Dec 2, 2016SaveLearn
Temporal characteristics and energy deposition of pulsating auroral patchesWe present a careful statistical analysis of pulsating aurora (PA) using all-sky green line (557.7 nm) images obtained at 3.3 Hz. Six well-defined individual PA patches are identified and extracted…B. K. Humberset, J. W. Gjerloev, M. Samara et al.·Dec 2, 2016SaveLearn
Scintillation and irregularities from the nightside part of a Sun-aligned polar cap arcIn this paper we study the presence of irregularities and scintillation in relation to the nightside part of a long-lived, Sun-aligned transpolar arc on 15 January 2015. The arc was observed in DMSP…Christer van der Meeren, Kjellmar Oksavik, Dag A. Lorentzen et al.·Nov 28, 2016SaveLearn
Observations of planetary waves in the mesosphere-lower thermosphere during stratospheric warming eventsThis 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…N. H. Stray, Y. J. Orsolini, P. J. Espy et al.·Nov 28, 2016SaveLearn
Nature of the MHD and kinetic scale turbulence in the magnetosheath of Saturn: Cassini observationsLow frequency turbulence in Saturn's magnetosheath is investigated using in-situ measurements of the Cassini spacecraft. Focus is put on the magnetic energy spectra computed in the frequency…L. Z. Hadid, F. Sahraoui, K. H. Kiyani et al.·Nov 24, 2016SaveLearn
Cutoff latitude variation during solar proton events: Causes and consequencesTo accurately quantify the effect of solar proton events (SPEs) on the atmosphere requires a good estimate of the particle energy deposition in the middle atmosphere (60- 100 km) and how the energy…H. Nesse Tyssøy, J. Stadsnes·Nov 24, 2016SaveLearn
On the effect of ocean tides and tesseral harmonics on spacecraft flybys of the EarthThe so-called flyby anomaly has encouraged several authors to analyze in detail the minor perturbative contributions to the trajectory of spacecraft performing a flyby manoeuvre. This anomaly consist…L. Acedo·Nov 24, 2016SaveLearn
Revisiting a classic: the Parker-Moffatt problemThe interaction of two colliding Alfvén wave packets is here described by means of magnetohydrodynamics (MHD) and hybrid kinetic numerical simulations. The MHD evolution revisits the theoretical…O. Pezzi, T. N. Parashar, S. Servidio et al.·Nov 24, 2016SaveLearn
Geomagnetically Induced Currents in the Irish Power Network during Geomagnetic StormsGeomagnetically induced currents (GICs) are a well-known terrestrial space weather hazard. They occur in power transmission networks and are known to have adverse effects in both high and…Seán P. Blake, Peter T. Gallagher, Alan G. Jones et al.·Nov 23, 2016SaveLearn
Multi-scale Pressure-balanced Structures in Three-dimensional Magnetohydrodynamic TurbulenceObservations of solar wind turbulence indicate the existence of multi-scale pressure-balanced structures (PBSs) in the solar wind. In this work, we conduct a numerical simulation to investigate…Liping Yang, Jiansen He, Chuanyi Tu et al.·Nov 22, 2016SaveLearn
Magnetic Coordinate SystemsGeospace phenomena such as the aurora, plasma motion, ionospheric currents and associated magnetic field disturbances are highly organized by Earth's main magnetic field. This is due to the fact…K. M. Laundal, A. D. Richmond·Nov 21, 2016SaveLearn
North-South Asymmetries in Earth's Magnetic Field: Effects on High-Latitude GeospaceThe solar-wind magnetosphere interaction primarily occurs at altitudes where the dipole component of Earth's magnetic field is dominating. The disturbances that are created in this interaction…K. M. Laundal, I. Cnossen, S. E. Milan et al.·Nov 21, 2016SaveLearn
Sunlight effects on the 3D polar current system determined from low Earth orbit measurementsInteraction between the solar wind and the Earth's magnetosphere is associated with large-scale currents in the ionosphere at polar latitudes that flow along magnetic field lines (Birkeland…Karl M. Laundal, Christopher C. Finlay, Nils Olsen·Nov 21, 2016SaveLearn
Differential kinetic dynamics and heating of ions in the turbulent solar windThe solar wind plasma is a fully ionized and turbulent gas ejected by the outer layers of the solar corona at very high speed, mainly composed by protons and electrons, with a small percentage of…F. Valentini, D. Perrone, S. Stabile et al.·Nov 15, 2016SaveLearn