[PDF] Top 20 CUTLASS HF radar observations of high-velocity E-region echoes
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CUTLASS HF radar observations of high-velocity E-region echoes
... ranges of ∼580 km, where the aspect angle contour crosses the altitude of the electron density ...cutoff of the scatter from the top part of the irregularity layer at ranges larger than ∼690 ... See full document
14
High resolution observations of sporadic-E layers within the polar cap ionosphere using a new incoherent scatter radar experiment
... Abstract. High resolution observations of sporadic-E layers using a new experiment with the EISCAT (European Inco- herent SCATter) Svalbard radar (ESR) are ...The observations were made ... See full document
10
Imaging observations of nighttime mid-latitude F-region field-aligned irregularities by an MU radar ultra-multi-channel system
... velocities of echoes with SNR larger than 0 dB are ...some echoes have negative Doppler velocities of about −50 m s −1 ...several echoes with very high negative Doppler ... See full document
8
A comparison of velocity measurements from the CUTLASS Finland radar and the EISCAT UHF system
... The CUTLASS Finland radar, which com- prises an integral part of the SuperDARN system of HF coherent radars, provides near continuous observations of high-latitude ... See full document
11
Observations of HF-induced instability in the auroral E region
... intention of this heating experiment was to produce results similar to results reported by Pedersen and Gerken (2005), or to modify the visible aurora in other ...the radar program therefore may not be ... See full document
6
Validation of the CUTLASS HF radar gravity wave observing capability using EISCAT CP-1 data
... day of CUTLASS common programme observations and for each beam, the frequency of occurrence of the ®rst power returns is noted as a function of range and ...version of the ... See full document
8
Simultaneous HF measurements of E- and F-region Doppler velocities at large flow angles
... Doppler velocity) at latitudes of the E-region observations that was smaller in magnitude and rotated by some angle with respect to that at latitudes of the F-region ... See full document
9
A Statistical study of the Doppler spectral width of high-latitude ionospheric F-region echoes recorded with SuperDARN coherent HF radars
... the radar orientation has a crucial impact on its ability to illuminate a given MLT-3 ...each radar and each MLT-3 cell, a preferred beam num- ber is defined as the average of the beam numbers ... See full document
13
Mid-latitude <i>E</i>-region bulk motions inferred from digital ionosonde and HF radar measurements
... coherent radar backscatter measurements of the range-/azimuth-time-intensity (RTI/ATI) striations of quasi- periodic (QP) echoes, or from radar interferometer/imaging ...ments of ... See full document
10
Signatures of moving polar cap arcs in the F-region PolarDARN echoes
... terms of the relationship to the auroral oval, two types of events have been ...Arcs of one group were formed by splitting/detaching from the ...type of PC arcs. It is very likely that ... See full document
15
First simultaneous observations of flux transfer events at the high-latitude magnetopause by the Cluster spacecraft and pulsed radar signatures in the conjugate ionosphere by the CUTLASS and EISCAT radars
... temperature of the F-region ion population through the process of ion fric- tional ...ion velocity, particularly before 10:20 ...start of the interval shown), coinciding approximately ... See full document
18
Nightside studies of coherent HF Radar spectral width behaviour
... presence of the EISCAT (European Incoherent SCAT- ter) and ESR (EISCAT Svalbard Radar) radars within the field-of-view of the CUTLASS radars (Co-operative UK Twin Located Auroral ... See full document
15
Three-dimensional tracking of mid-latitude quasi-periodic E-region echoes observed with the Chung-Li VHF radar
... multi-beam high resolution MU radar observations, Urbina et ...50-MHz radar interferometer at Camp Santiago and the Arecibo incoherent scatter ...MST radar located at Gadanki. The new ... See full document
8
A technique for accurately determining the cusp-region polar cap boundary using SuperDARN HF radar measurements
... indicator of intermixing of the input distributions, and hence, inaccurate boundary determi- ...location of the cusp region (08:00–12:00 MLT). The original study of Baker et ...study ... See full document
14
Electric field measurements of DC and long wavelength structures associated with sporadic-<i>E</i> layers and QP radar echoes
... horizontal velocity of the second rocket enabled the chemical release to reveal the presence of periodic “whorls” or billows similar to that produced by the KHI mechanism, as shown in ...wavelength ... See full document
16
Variations in the occurrence of SuperDARN F region echoes
... role of the termina- tor/sunset lines in the occurrence pattern on the “month– MLT” ...periods of solar minimum, the terminator line is within/close to the region of maximum echo detection ... See full document
10
A statistical survey of dayside pulsed ionospheric flows as seen by the CUTLASS Finland HF radar
... number of grey neighbours to the total number of grey points represents how well grouped the periodicities are within the ®eld of ...the radar than range gate 25 is considered, as this is the ... See full document
9
A first comparison of irregularity and ion drift velocity measurements in the E-region
... issue of the location of the HF echoes one needs to perform ray-tracing simulations using the electron density measurements along the HF radar ...the region of ... See full document
15
Towards a synthesis of substorm electrodynamics: HF radar and auroral observations
... onset of an interval of substorm activity was captured in the south- ern hemisphere by the Far UltraViolet (FUV) instrument on board the IMAGE ...onset of Pi2 activity and subsequent magnetic bays, ... See full document
17
Velocity of E-region HF echoes under strongly-driven electrojet conditions
... repeated observations strongly suggest that the phase speed of E-region structures at their maximum amplitude is very often comparable to the threshold speed, namely, the isothermal ion-acoustic ... See full document
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