[PDF] Top 20 The equatorial electrojet radar observations and modeling
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The equatorial electrojet radar observations and modeling
... While the cause of plasma irregularities associated with equatorial spread F (ESF) events was once controversial, it is now known that ionospheric interchange insta- bilities are responsible [Woodman ... See full document
212
Radar and satellite global equatorial F region vertical drift model
... Comparison of the model predictions with average drift patterns obtained from the Jicamarca drift observations for equinox, June solstice, and December solstice conditions for low[r] ... See full document
14
Multi-instrumented observations of the equatorial F-region during June solstice: large-scale wave structures and spread-F
... Typical equatorial spread-F events are often said to occur during post-sunset, equinox conditions in most longitude ...for the development of plasma instabilities responsible for equatorial spread-F ... See full document
16
Dynamics of Equatorial Spread F Using Ground-Based Optical and Radar Measurements
... have the advantage over remote sensing equipment of being able to provide very high resolution analysis precisely in the regions of greatest ...support and, in the case of rockets, only fly ... See full document
219
AMISR-14: Observations of equatorial spread F
... in the auroral region ...latitude and midlatitude. The capability of steering the beam from pulse to pulse has been sought at Jicamarca for many ...years. The AMISR-14 provides this new ... See full document
9
Effects of large horizontal winds on the equatorial electrojet
... in the equatorial lower thermosphere and the realization that wind speeds in excess of 150 m/s are commonplace in the E region invite an examination of the consequences for ... See full document
12
Imaging coherent backscatter radar observations of topside equatorial spread F
... High-resolution images of coherent backscatter from the radar plume were computed from the interferometry data using the maximum entropy method.. These images show that scattering re[r] ... See full document
12
Phase calibration approaches for radar interferometry and imaging configurations: equatorial spread F results
... In the following sections we present three different ap- proaches that allow either absolute or relative phase calibra- ...In the case of the relative calibration, although useful for some ... See full document
11
Rocket and radar investigation of background electrodynamics and bottom-type scattering layers at the onset of equatorial spread F
... UT and persisted until local ...UT and 09:30 UT, with blanketing Es frequencies (fbEs) some- times exceeding 6 MHz and critical frequencies (foEs) ex- ceeding 15 ...MHz. The presence of ... See full document
14
Comparing F region ionospheric irregularity observations from C/NOFS and Jicamarca
... with equatorial spread F (ESF) have been made using the Jicamarca Radio Observatory and the Plasma Langmuir Probe (PLP) and Vector Electric Field Instrument (VEFI) instruments on ... See full document
5
Radio and optical techniques for locating equatorial plasma irregularities
... answering the questions outlined in the previous section, particularly using multiple remote sensing techniques together and bringing the data into a common format for ...new and ... See full document
151
High altitude large-scale plasma waves in the equatorial electrojet at twilight
... Hysell and Chau (2002) but with a narrower field of ...JULIA observations, this phe- nomenon occurs very often. The source of these echoes has not been ...Hysell and Chau (2002), we ten- ... See full document
6
Observations and modeling of post-midnight uplifts near the magnetic equator
... on the night of 1–2 October 2002 was anoma- lous and coincident with a geomagnetic storm (Nicolls et ...However, the uplifts occur fairly regularly in the equatorial ionosphere with no ... See full document
15
Reconciliation of rocket-based magnetic field measurements in the equatorial electrojet with classical collision theory
... of electrojet currents inferred from the Challenging Minisatellite Payload (CHAMP) magnetic field measure- ments that has been successfully validated with about six years of concurrent observations ... See full document
6
Simultaneous 6300 Å airglow and radar observations of ionospheric irregularities and dynamics at the geomagnetic equator
... of the clear nights. Out of the 517 nights, 387 nights were too cloudy to make a conclusion about the presence of ...of the remaining 130 clear nights, depletions were observed in ... See full document
15
Zonal wind velocity profiles in the equatorial electrojet derived from phase velocities of type II radar echoes
... I and II spectra are radar signatures of the irregularities that are observed if the Farley-Buneman and gradient-drift instabilities are excited [Farley, ...1985]. The ... See full document
8
Combined radar observations of equatorial electrojet irregularities at Jicamarca
... 99 and 105 km altitude during the day and incorporating electron thermal effects as formulated by Di- mant and Oppenheim ...for the ions with BGK collisions, which is appropriate since ... See full document
17
Imaging radar observations and nonlocal theory of large-scale plasma waves in the equatorial electrojet
... In the next section of the paper, we evaluate contempo- rary theories of large-scale waves in the equatorial electrojet in light of the radar ...in the case of ... See full document
13
Multistation digisonde observations of equatorial spread F in South America
... in the west about 30 to 60 min before it arrives overhead, depending on the eastward drift ...Measuring the radar ranges to the vertical and oblique echoes and the ... See full document
9
First Jicamarca radar observations of two-stream E region irregularities under daytime counter equatorial electrojet conditions
... as the ones obtained during normal daytime two- stream ...including the same modified antenna, same time of the day and similar magni- tude of the H ...longer and strong ... See full document
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