Bibliography

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Found 18 entries in the Bibliography.

Showing entries from 1 through 18

2019

Review of the accomplishments of mid-latitude Super Dual Auroral Radar Network (SuperDARN) HF radars

The Super Dual Auroral Radar Network (SuperDARN) is a network of high-frequency (HF) radars located in the high- and mid-latitude regions of both hemispheres that is operated under international cooperation. The network was originally designed for monitoring the dynamics of the ionosphere and upper atmosphere in the high-latitude regions. However, over the last approximately 15 years, SuperDARN has expanded into the mid-latitude regions. With radar coverage that now extends continuously from auroral to sub-auroral and mid-latitudes, a wide variety of new scientific findings have been obtained. In this paper, the background of mid-latitude SuperDARN is presented at first. Then, the accomplishments made with mid-latitude SuperDARN radars are reviewed in five specified scientific and technical areas: convection, ionospheric irregularities, HF propagation analysis, ion-neutral interactions, and magnetohydrodynamic (MHD) waves. Finally, the present status of mid-latitude SuperDARN is updated and directions for future research are discussed.

Nishitani, Nozomu; Ruohoniemi, John; Lester, Mark; Baker, Joseph; Koustov, Alexandre; Shepherd, Simon; Chisham, Gareth; Hori, Tomoaki; Thomas, Evan; Makarevich, Roman; , others;

Published by: Progress in Earth and Planetary Science Published on:

YEAR: 2019 DOI: 10.1186/s40645-019-0270-5

2017

Dual E$\times$ B flow responses in the dayside ionosphere to a sudden IMF By rotation

We report for the first time a dual transition state in the dayside ionosphere following a sudden rotation of the interplanetary magnetic field (IMF) in the upstream magnetosheath from IMF B_y\ \<\ 0 to B_y\ \>\ 0 during B_z\ \<\ 0. E\ \texttimes\ B drifts respond with different time delays in the dayside auroral zone and high-latitude polar cap with an initial 11\ min transition state of oppositely directed E\ \texttimes\ B drifts coexisting at these locations. This is followed by a 6\textendash8\ min rotation of lower latitude E\ \texttimes\ B flow from dusk to dawn. We propose that this sequence of events is consistent with two separate X lines coexisting on the subsolar and lobe magnetopause. Time delays are proposed for merged flux of the draped preceding IMF to exit the subsolar region before the new IMF may be processed along a newly reconfigured component reconnection X line. Finally, a strong direct correlation is observed between magnetosheath plasma density and auroral zone E\ \texttimes\ B speeds.

Eriksson, S.; Maimaiti, M.; Baker, J.; Trattner, K.; Knipp, D.; Wilder, F.;

Published by: Geophysical Research Letters Published on: 06/2017

YEAR: 2017 DOI: 10.1002/2017GL073374

2014

Volcanology, Geochemistry, and Petrology General Contributions Posters

Bennett, Vickie; Baker, Don;

Published by: Published on:

YEAR: 2014 DOI:

2012

Dayside and nightside segments of a polar arc: The particle characteristics

Park, J.; Min, K.; Parks, G.; Zhang, Y.; Lee, J.-J.; Baker, J.; Kim, H.; Hwang, J.; Yumoto, K.; Uozumi, T.; Lee, C.;

Published by: Journal of Geophysical Research Published on: Jan-01-2012

YEAR: 2012 DOI: 10.1029/2011JA017323

2008

Accuracy of USU-GAIM specifications of foF2 and M (3000) F2 for a worldwide distribution of ionosonde locations

McNamara, Leo; Baker, Craig; Decker, Dwight;

Published by: Radio Science Published on:

YEAR: 2008 DOI:

2007

Observations of ionospheric convection from the Wallops SuperDARN radar at middle latitudes

Baker, J.; Greenwald, R.; Ruohoniemi, J.; Oksavik, K.; Gjerloev, J.; Paxton, L.; Hairston, M.;

Published by: Journal of Geophysical Research Published on: Jan-01-2007

YEAR: 2007 DOI: 10.1029/2006JA011982

On the stability of high-latitude plasma convection during northward IMF: an event study

Cumnock, Judy; Baker, JBH; Blomberg, Lars;

Published by: Published on:

YEAR: 2007 DOI:

Latitudinal Analysis of Twilight Hydroxyl Airglow

Latitudinal characterizations of twilight mesospheric hydroxyl volume emission rate (VER) from year 2002 to 2005, are made possible using the SABER (Sounding of the Atmosphere

Harrison, Willie; Baker, Doran;

Published by: Published on:

YEAR: 2007 DOI:

2006

First observations of the temporal/spatial variation of the sub-auroral polarization stream from the SuperDARN Wallops HF radar

Oksavik, K.; Greenwald, R.; Ruohoniemi, J.; Hairston, M.; Paxton, L.; Baker, J.; Gjerloev, J.; Barnes, R.;

Published by: Geophysical Research Letters Published on: Jan-01-2006

YEAR: 2006 DOI: 10.1029/2006GL026256

Satellite-based correlation studies of mesospheric O2 and OH infrared emissions

Thurgood, Brandon; Baker, Doran;

Published by: Published on:

YEAR: 2006 DOI:

2005

Measuring the Dayside Thermospheric Resonse to Extreme Joule Heating Events Using SuperDARN and TIMED GUVI

Baker, JB; Greenwald, RA; Paxton, LJ; Zhang, Y; Ruohoniemi, JM; Oksavik, K;

Published by: Published on:

YEAR: 2005 DOI:

Visualization and Processing of Mesospheric Hydroxyl Infrared Emissions from SABER

The TIMED spacecraft observes various aspects of the MLT region from its 625-km circular orbit using four principal instruments: GUVI (Global Ultraviolet Imager), SEE (Solar Extreme

Reese, Kenneth; Baker, Doran;

Published by: Published on:

YEAR: 2005 DOI:

2004

Height-integrated Joule and auroral particle heating in the night side high latitude thermosphere

Energy deposited at high latitudes by Joule and auroral particle heating perturbs the chemistry and dynamics of the neutral thermosphere. Height-integrated heating rates can be calculated by combining Super Dual Auroral Radar Network (SuperDARN) measurements with TIMED spacecraft Global Ultraviolet Imager (GUVI) auroral images. Spatial maps of heating rates are examined during two TIMED orbits and statistical averages are presented for quiet to moderate levels of geomagnetic activity. Joule heating dominates in the evening sector auroral oval, whereas particle heating dominates after midnight. There is also a tendency for Joule heating (particle heating) to dominate in the vicinity of the region-1 (region-2) currents. This complementary behavior is associated with suppression of the electric field in regions of bright aurora.

Baker, JBH; Zhang, Y; Greenwald, RA; Paxton, LJ; Morrison, D;

Published by: Geophysical research letters Published on: 05/2004

YEAR: 2004 DOI: 10.1029/2004GL019535

Modeling Low Latitude Ion Densities During Magnetic Storms

de La Beaujardiere, O; Retterer, J; Crowley, G; Basu, B; Welsh, J; Baker, C; Mellein, J; Valladares, C; Rich, F; Cooke, D; , others;