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May 6, 2010
05/10
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Davis, L. R.; Ogilvie, K. W
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Topics: RIOMETERS, SOLAR PROTONS
The memorandum considers the detection of overhead nuclear explosions in space by riometer measurement of the effects of explosion-induced ionization on the absorption of high-frequency cosmic noise. The induced ionization is calculated as a function of height and time for a 1-kT X-ray impulse having temperatures of .5, 1.0, and 2.0 kev and having burst heights from 1,000 to 100, 000 km. The absorption at each height due to the induced ionization is then calculated at a radio frequency of 30...
Topics: DTIC Archive, RAND CORP SANTA MONICA CA, *NUCLEAR PROPERTIES, *RIOMETERS, DETECTION, HIGH ALTITUDE,...
This report describes the prototype 16-beam, 38.6 MHz riometer system developed by APTI and the University of Maryland for the HAARP program. The prototype system is the forerunner for a full-scale imaging riometer diagnostic instrument for characterizing the ionospheric volume perturbed by controlled RF heating experiments. The prototype system, installed at the HAARP site near Gakona, AK, consists of a 1 x 16 antenna array phased in one dimension (beam width of 6.7 deg) and oriented...
Topics: DTIC Archive, Rosenberg, Ted J., ADVANCED POWER TECHNOLOGIES INC WASHINGTON DC, *IONOSPHERIC...
Seasonal variations of ionospheric absorption were studied using riometer (A2) measurements over a wide latitude range. In agreement with the results of earlier studies of A1 radiowave absorption, equinoctial maxima of approximately equal amplitude are observed in the auroral zone and near the equator. However, at intermediate latitudes riometer absorption maximizes during the fall season, whereas the A1 data show a semi-annual variation with maxima occurring in summer and winter. The autumn...
Topics: NASA Technical Reports Server (NTRS), AMPLITUDES, ANNUAL VARIATIONS, ELECTROMAGNETIC ABSORPTION,...
Riometer record reproduction of 18-Mc and 30-Mc cosmic noise are presented for the period 29 June 1964 to 3 January 1965. The riometers were located near San Francisco, California. The riometer and the field site are described briefly and the use of the data is explained.
Topics: DTIC Archive, Hodges, J C, STANFORD RESEARCH INST MENLO PARK CA, *EXTRATERRESTRIAL RADIO WAVES,...
Polar Cap Absorption (PCA) events have been observed at Thule, Greenland, using a ground-based riometer for the past decade. The riometer was operated at a fixed frequency of 30 MHz, and used a two-element Yagi antenna directed toward the zenith. This report provides information for operational systems personnel and systems designers concerning the mean behavior of PCAs and other aspects of the phenomenon; for example, the extreme cases in duration and magnitude. In addition, included as an...
Topics: DTIC Archive, Cormier, Raymond J, AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA, *IONOSPHERIC...
A detailed investigation of the approximate square-root relationship between riometer absorption and solar proton fluxes has been carried out. The relationship is shown to be valid for night as well as day conditions, with differences in the constants. The atmospheric chemistry basis for the differences in the constants is discussed. (Author)
Topics: DTIC Archive, Sellers,Bach, PANAMETRICS INC WALTHAM MASS, *POLAR CAP ABSORPTION, *SOLAR WIND,...
Results of the Chatanika DNA 617 Radar support coverage of the EXCEDE rocket experiment are presented, along with magnetometer and riometer data to give a more complete picture of ionospheric processes. The EXCEDE rocket was launched at 0546:40 UT on 28 February 1976. The purpose of the experiment was to stimulate and measure shortwave infrared emissions under quiet ionospheric conditions. The Chatanika radar supported the experiment in two ways--first, by monitoring the ionosphere and assuring...
Topics: DTIC Archive, Watt, Theodore M., STANFORD RESEARCH INST MENLO PARK CA, *RADAR TRACKING, IONOSPHERE,...
A list of the significant solar proton events for the period 1955 through 1969 has been prepared with identification limited to events with solar proton induced absorption as measured by a riometer in the earth's polar caps. A total of 139 events were identified over this 15-year period. This table was compiled after a thorough search of primary data sources in order to ascertain an onset time, a time of maximum absorption, the value of the maximum absorption, and the duration of each event....
Topics: DTIC Archive, Shea,M A, AIR FORCE GEOPHYSICS LAB HANSCOM AFB MASS, *PROTON BEAMS, *SOLAR COSMIC...
Two case studies are presented of the global auroral responses to shocks in the solar wind at Earth. The z component of the interplanetary magnetic field, Bz, is negative ahead and behind the first shock and positive for the second case. A sudden-commencement geomagnetic storm develops in each case, with maximum D sub st somewhat 190 nT. An immediate auroral response is detected at all longitudes around the auroral oval, in which auroral luminosities increase by a factor of 2-3 with the first...
Topics: DTIC Archive, Craven,J D, IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY, *AURORAE, *SOLAR WIND,...
The onset of auroral breakup was studied by using a variety of instruments with time resolution of some tens of second. Rapid sequences of all-sky photographs, and fast meridian scans by photometers, show that breakup is usually preceded by moderate brightening, followed by fading of the auroral brightness lasting one or two minutes, before the actual breakup itself. This optical activity is closely correlated with the development of auroral radar echoes. Data from a magnetometer network...
Topics: NASA Technical Reports Server (NTRS), ALL SKY PHOTOGRAPHY, AURORAS, FADING, IONOSPHERIC CURRENTS,...
This report covers technical activities performed during the period November 1975 through January 1976. It provides a geophysical description of the auroral and geomagnetic environment during the launch of ICECAP rocket PF-SH-92 (IC 519.07-18). An interpretation of the primary measurements obtained by the sensors onboard this specific experimental payload is included.
Topics: DTIC Archive, Romick,Gerald J, ALASKA UNIV COLLEGE GEOPHYSICAL INST, *IONOSPHERE, *AURORAE,...
An Honest John Nike Javelin rocket was launched at 06:33:09 UT on March 11, 1975 from Poker Flat Research Rocket Range. This rocket reached an apogee altitude of 183.1 km with a total flight time greater than 370 seconds. The payload was successfully recovered. The rocket was launched into the eastward electrojet and penetrated into the region between the eastward and westward electrojets thirty minutes prior to an 800 gamma negative bay in H at College. The sky at Poker Flat was partly cloudy;...
Topics: DTIC Archive, Romick, Gerald J., ALASKA UNIV FAIRBANKS GEOPHYSICAL INST, *AURORAE, *SOUNDING...
This report, the thirteenth and final progress report on the McDonnell Douglas Geophysical Observatory Program, discusses history of the program from 1962 through 1973, and results of the research carried out in 1974. Topic areas covered include: Station operation; Ionospheric work; Solar studies, Magnetospheric studies; Satellite measurements; International participation; and, 1974 research on solar activity, ATS-6 studies, magnetospheric physics, and station operation.
Topics: NASA Technical Reports Server (NTRS), EARTH IONOSPHERE, EARTH MAGNETOSPHERE, GEOPHYSICAL...
Riometer record reproductions of 18-Mc and 30-Mc cosmic noise are presented for the period 3 January to 19 June 1966. The riometers were located near San Francisco, California. The riometer and the field site are described briefly, and the use of the data is explained.
Topics: DTIC Archive, Hodges, J C, STANFORD RESEARCH INST MENLO PARK CA, *EXTRATERRESTRIAL RADIO WAVES,...
A program for the development of automatic real-time monitoring of the ionosphere at a remote observing location is described. The Digisonde 128, a digital sounder in routine operation since 1970, provides digital data suitable for online computer processing. Analytical methods for the detection of ionospheric echoes and the determination of their virtual height, amplitude, and range spread have been developed. For real time application, these methods have been implemented in hardware using...
Topics: DTIC Archive, Buchau,Jurgen, AIR FORCE GEOPHYSICS LAB HANSCOM AFB MASS, *IONOSONDES, *REMOTE...
Both the anisotropic and isotropic diffusion theories can be used to extrapolate proton fluxes for E greater than or equal to 10 meV for over 50% of the particle events. The isotropic diffusion theory uses a diffusion coefficient: D = Mr sup beta. It was found that M and beta tended to be functions of flare position on the solar disk. A measurement of the interplanetary flux in near earth space gives a good indication of the polar cap fluxes. It was found that the 30 MHz absorption over the...
Topics: NASA Technical Reports Server (NTRS), FLUX (RATE), PREDICTION ANALYSIS TECHNIQUES, SOLAR FLARES,...
Under this contract, Northwest Research Associates (NWRA) is performing measurements of the ionosphere in order to investigate plasma phenomena in both the natural ionosphere and in the ionosphere perturbed by the High-frequency Active Auroral Research Program (HAARP) high-frequency heater. The research being conducted falls within Hanscom Technical Areas 3(a), Ionospheric Effects Research and Department of Defense Systems, and 3(b), Ionospheric Research Technology, of the Broad Agency...
Topics: DTIC Archive, Secan, James A, NORTHWEST RESEARCH ASSOCIATES INC BELLEVUE WA, *IONOSPHERE, HIGH...
The interaction between the geomagnetic and interplanetary magnetic fields is studied through its effects upon the intensities of solar electrons reaching the polar caps during times of strongly anisotropic electron fluxes in the magnetosheath. During the particle event of November 18, 1968, electrons of solar origin were observed outside the magnetopause with detectors aboard OGO-5. Correlative studies of these satellite observations and concurrent measurements by riometers and ionospheric...
Topics: NASA Technical Reports Server (NTRS), OGO-5, SOLAR ELECTRONS, SPECTROMETERS, DATA CORRELATION,...
This report provides a summary of high latitude ionospheric reflectivity as observed by the USAF high resolution VLF/LF ionosounder operating in northern Greenland. Ionospheric reflectivity parameters, including reflection heights and coefficients, are presented as a function of time of day. VLF long path propagation measurements, along with magnetometer and riometer data, are presented as supplementary information. (Author)
Topics: DTIC Archive, Pagliarulo,Robert P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB N Y, *IONOSPHERIC...
A practical scheme for using Solar Radio Burst Data of U-shaped spectra to predict the slope as well as the magnitude of the associated proton spectra has been developed, based on empirical correlation studies. A prediction scheme for riometer absorption, using proton spectral parameters as the input has been developed. Theoretical studies relate the source electron distribution parameters to those of the radio spectra, based on the model that the U-shaped spectra originate from a single group...
Topics: DTIC Archive, Bakshi,Pradip, BOSTON COLL CHESTNUT HILL MASS DEPT OF PHYSICS, *CORRELATION...
This is the final report on NASA Grant NAG5-9706. This project explored riometer (relative ionospheric opacity meter) antenna designs that would be practical for a Mars surface or balloon mission. The riometer is an important radio science instrument for terrestrial aeronomy investigations. The riometer measures absorption of cosmic radio waves by the overhead ionosphere. Studies have shown the instrument should work well on Mars, which has an appreciable daytime ionosphere. There has been...
Topics: NASA Technical Reports Server (NTRS), RIOMETERS, ANTENNA DESIGN, REMOTE SENSING, MARS ATMOSPHERE,...
In April 1983 Utah State University and Air Force Geophysics Laboratory experimenters launched a Sergeant (A30.276) sounding rocket from the Poker Flat Research Range, Alaska. The prime purpose of the flight was to obtain infrared spectral measurements in the 2-1.5 micro m range during an auroral event. In addition to the prime experiment, which has already been reported, the payload contained four photometers, and energy deposition scintillator and an atomic oxygen detector to gather in-situ...
Topics: DTIC Archive, Ulwick, J C, UTAH STATE UNIV LOGAN SPACE DYNAMICS LABS, *MEASUREMENT, *INFRARED...
This report provides a summary of high latitude ionospheric reflectivity as observed by the USAF high resolution VLF/LF ionosounder operating in northern Greenland. Ionospheric reflectivity parameters, including reflection heights and coefficients, are presented as a function of time of day. VLF long path propagation measurements, along with magnetometer and riometer data, are presented as supplementary information. (Author)
Topics: DTIC Archive, Rasmussen,John E, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB N Y, *REFLECTIVITY,...
Parent-flare 2.8-GHz event energy is correlated with peak riometer absorption for 47 Polar-Cap Absorption (PCA) events which occurred during the nineteenth and twentieth solar cycles. Thirty-two of these events had riometer absorption of or = 2.0 dB. The least-squares relationship between the peak absorption (A) and the burst energy (E) is given by A(dB) = 0.0116 E to the 0.5555 power with a correlation coefficient, R, of 0.59, where E is given in sfu-min. The peak absorption predicted by this...
Topics: DTIC Archive, Cliver,Edward W, NAVAL ELECTRONICS LAB CENTER SAN DIEGO CALIF, *SOLAR FLARES, *POLAR...
This report provides a summary of high latitude ionospheric reflectivity as observed by the USAF high resolution VLF/LF ionosounder operating in northern Greenland. Ionospheric reflectivity parameters, including reflection heights and coefficients, are presented as a function of time of day. VLF long path propagation measurements, along with magnetometer and riometer data, are presented as suplementary information. (Author)
Topics: DTIC Archive, Pagliarulo,Robert P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSONDES,...
This report provides a summary of high latitude ionospheric reflectivity as observed by the USAF high resolution VLF/LF ionosounder operating in northern Greenland. Ionospheric reflectivity parameters, including reflection heights and coefficients, are presented as a function of time of day. VLF long path propagation measurements, along with magnetometer and riometer data, are presented as supplementary information. (Author)
Topics: DTIC Archive, Rasmussen,John E, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB N Y, *POLAR REGIONS,...
This report provides a summary of high latitude ionospheric reflectivity as observed by the USAF high resolution VLF/LF ionosounder operating in northern Greenland. Ionospheric reflectivity parameters, including reflection heights and coefficients, are presented as a function of time of day. VLF long path propagation measurements, along with magnetometer and riometer data, are presented as supplementary data. (Author)
Topics: DTIC Archive, Pagliarulo,Robert P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSONDES,...
This report provides a summary of high latitude ionospheric reflectivity as observed by the USAF high resolution VLF/LF ionosounder operating in northern Greenland. Ionospheric reflectivity parameters, including reflection heights and coefficients, are presented as a function of time of day. VLF long path propagation measurements, along with magnetometer and riometer data, are presented as supplemental information. (Author)
Topics: DTIC Archive, Rasmussen,John E, McLain,Ralph J, Turtle,John P, Klemetti,Wayne I, ROME AIR...
The report describes some coordinated high-altitude experiments which are being conducted by HRB-Singer, Inc., for simulating nuclear-burst effects on long-range VLF propagation. The program consists of five parts: Collection and study of VLF phase and amplitude data over six long-range, high-latitude VLF propagation paths and 2-middle-latitude control paths; collection and study of ionospheric data (cosmic noise absorption data) near Reykjavik, Iceland, and Thule, Greenland; collection and...
Topics: DTIC Archive, Oelbermann, E J, *RADIO TRANSMISSION, *NUCLEAR EXPLOSIONS, ELECTRON DENSITY,...
A polar cap absorption (PCA) event, beginning on 19 October 1989, is examined using the Imaging Riometer for Ionospheric Studies (IRIS) developed at the Univ. of Maryland. IRIS is a 49-beam (7 x 7) phased-array 38.2 MHz radiowave imaging system and operating at Amundsen-Scott South Pole Station, Antarctica. After applying a low-pass (10 minute) filter, we perform a cross-correlation between the central beam and the other beams in the array. From the cross- correlation analysis, we attempt to...
Topics: DTIC Archive, Davis, Timothy C, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH, *POLAR CAP...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in Northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of high latitude ionospheric reflectivity as observed by the USAF high resolution VLF/LF ionosounder operating in northern Greenland. Ionospheric reflectivity parameters, including reflection heights and coefficients, are presented as a function of time of day. Riometer and magnetometer measurements of the polar propagation environment are presented as supplementary data. (Author)
Topics: DTIC Archive, Pagliarulo,Robert P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *ELECTROMAGNETIC...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
The spatial and temporal variations in cosmic radio noise absorption were investigated at College, Alaska, during 1962-1963 by means of riometers using one narrow beam antenna and two relatively broad beam antennas which were pointed at different directions along the magnetic meridian. The narrow beam antenna had a 12 deg beamwidth and was periodically swung in the magnetic meridian from 12 deg north of zenith to 12 deg south of zenith. Each of the broad beam antennas had a 26 deg beamwidth and...
Topics: DTIC Archive, Ansari, Z A, ALASKA UNIV FAIRBANKS GEOPHYSICAL INST, *LUMINOSITY, *NOISE(RADIO),...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
A summary of VLF, magnetometer, riometer, and 5577A photometer ten-minute averaged data from the Geopole Observatory, Thule Air Base, Greenland, for the period 01 July 1974 - 31 March 1976, is presented along with a thirty-second data survey for the same sensors of energetic particle and magnetic disturbance events for the winter seasons 1973-74, 1974-75, and 1975-76. The occurrence of these events in relation to the interplanetary magnetic field sector structure and Godhavn 30 MHz riometer...
Topics: DTIC Archive, Korff,Dale F, REGIS COLL RESEARCH CENTER WESTON MASS, *GEOMAGNETISM, *POLAR REGIONS,...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of High latitude ionospheric reflectivity as observed by the USAF high resolution VLF/LF ionosounder operating in northern Greenland. Ionospheric reflectivity parameters, including reflection heights and coefficients, are presented as a function of time of day. VLF long path propagation measurements, along with magnetometer and riometer data, are presented as supplemental information. (Author)
Topics: DTIC Archive, Rasmussen,John E, Turtle,John P, McLain,Ralph J, Klemetti,Wayne I, ROME AIR...
This report provides a summary of high latitude ionospheric reflectivity as observed by the USAF high resolution VLF/LF ionosounder operating in northern Greenland. Ionospheric reflectivity parameters, including reflection coefficients and heights, are presented as a function of time of day. VLF long path propagation measurements, along with magnetometer and riometer data, are presented as supplemental information. (Author)
Topics: DTIC Archive, Rasmussen,John E, McLain,Ralph J, Turtle,John P, Klemetti,Wayne I, ROME AIR...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in Northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in Northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in Northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in Northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of high latitude ionospheric reflectivity as observed by the USAF high resolution VLF/LF ionosounder operating in northern Greenland. Ionospheric reflectivity parameters, including reflection heights and coefficients, are presented as a function of time of day. VLF long path propagation measurements, along with magnetometer and riometer data, are presented as supplementary information.
Topics: DTIC Archive, Rasmussen, John E., ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in Northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in Northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *IONOSPHERIC...
This report provides a summary of disturbance effects of energetic particle events on VLF/LF propagation parameters as observed by the USAF High Resolution VLF/LF Ionosounder in Northern Greenland. Disturbance effects on ionospheric reflectivity parameters, including reflection heights and coefficients, are presented along with data from a riometer, a magnetometer, and satellite particle detectors. (Author)
Topics: DTIC Archive, Turtle,John P, ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY, *Ionospheric propagation,...
