WorldCat Identities

Walt, M.

Overview
Works: 19 works in 19 publications in 2 languages and 32 library holdings
Roles: Author
Classifications: QC881.2.I6,
Publication Timeline
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Most widely held works by M Walt
Versuchsbericht über das Ausbeulen der auf einseitigen, gleichmässig und ungleichmässig verteilten Druck beanspruchten Platten aus Avional M, hart vergütet by Fritz Stüssi( Book )

1 edition published in 1951 in German and held by 9 WorldCat member libraries worldwide

Versuchsbericht über das Ausbeulen der auf einseitigen, gleichmäßig und ungleichmäßig verteilten Druck beanspruchten Platten aus Avional M, hart vergütet by Fritz Stuessi( Book )

1 edition published in 1951 in German and held by 5 WorldCat member libraries worldwide

The physical mechanisms of the inner Van Allen belt by M WALT( )

1 edition published in 1976 in English and held by 2 WorldCat member libraries worldwide

Investigation of Phenomena Affecting Auroral Ionosphere( Book )

1 edition published in 1974 in English and held by 2 WorldCat member libraries worldwide

Rocket data obtained during a magnetic substorm on 16 August 1970 indicates the auroral ionosphere was unstable to the high-frequency, Hall current, two stream instability. This mechanism has been proposed to explain field-aligned ionospheric irregularities. Such irregularities were present during the rocket experiment. According to the theory, certain critical values of electron number density, current density, and relative electron-ion drift velocity must be exceeded for the instability to occur. An analysis is described in which calculated values of these quantities are derived from the rocket measurements of the dc electric field and the precipitating electrons. The results are found to exceed the respective critical values and enforce the conclusion that the field-aligned irregularities were produced by this instability. (Modified author abstract)
Assessment of Magnetospheric Processes of Importance in HANE( Book )

1 edition published in 1979 in English and held by 1 WorldCat member library worldwide

Conditions in the unstable field-aligned current sheet above the auroral oval have been obtained from analyses of the electron and ion measurements on the S3-3 satellite. The measurements were obtained while the satellite was in and near the nominal region of the current sheet, remaining within a few degrees in invariant latitude, over a magnetic local-time interval of about 6 hours. Potential differences along the magnetic field, above and below the satellite, were inferred from the energy and pitch-angle distributions of the electrons. These potential differences, which exceeded 10 kV at times, were generally higher during the local evening than during the local afternoon, and were quite variable along the satellite trajectory, indicating latitudinal fluctuations of the current sheet with periods of 2-7 minutes. Upward flowing H+ and O+ ions were observed whenever the potential differences exceeded about .5 kV, which corresponds to the lowest energy threshold of the detectors. However, the pitch-angle distributions of the ions imply that the ions were accelerated not only along the magnetic field by the potential difference, but also perpendicularly to the field. The transverse acceleration of the ions most probably occurred through interactions with electrostatic ion cyclotron (EIC) waves, which are an expected product of the current-driven instability, and which have been observed in the current-sheet region
Ionospheric Effects Resulting from Precipitating Electrons at Mid and High Latitudes( Book )

1 edition published in 1976 in English and held by 1 WorldCat member library worldwide

The distributions of electrons resulting from pitch-angle diffusion due to both wave-particle interactions at high altitudes and binary collisions in the atmosphere have been determined. The results seem to be in agreement with available data, however wave fields which may be too high are required to fit the data. Some of the computational routines and cross sections used in the low-energy (1 eV to 500 eV) portion of the AURORA code have been improved. Processes occurring in the disturbed ionosphere other than collision and magnetic mirroring are inferred by comparing measurements of pitch-angle and energy distributions of electrons in the auroral zones with distributions computed with the AURORA code. (Author)
VERSUCHSBERICHT ÜBER DAS AUSBEULEN DER AUF EINSEITIGEN, GLEICHMÄSSIG UND UNGLEICHMÄSSIG VERTEILTEN DRUCK BEANSPRUCHTEN PLATTEN AUS AVINOL M, HART VERGÜTET by F Stüssi( Book )

1 edition published in 1951 in German and held by 1 WorldCat member library worldwide

Socialist Unity'; news clipping from the International accompanying letter dated March 3 1921( Book )

1 edition published in 1921 in English and held by 1 WorldCat member library worldwide

Investigation of ionospheric disturbances( )

1 edition published in 1977 in English and held by 1 WorldCat member library worldwide

Methods are described for solving the diffusion equation for trapped particles precipitating in the ionosphere. It is shown that the variation of the particle distribution with spatial location, both latitudinal and longitudinal, must be considered, and that the bounce averaged diffusion equations are inadequate to treat the loss-cone distributions. The coupling of precipitating particles to the ionosphere is described, with applications of the AURORA code. Mid-latitude WIDEBAND observations are described, with a discussion of interpretations based on trapped particle precipitation. Recent observations are described of loss-cone distributions of ions and electrons which do not fit the simple diffusion model. It is shown that these observations can be accounted for by the presence of kilovolt electric fields aligned with the magnetic field. It is shown that the ionosphere at large distances from a high-altitude nuclear explosion may be unstable to the Farley-Buneman mechanism, thereby providing a new mechanism for ionospheric irregularities
Versuchsbericht über das Ausbeulen der auf einseitigen, gleichmässig und ungleichmässig verteilten Druck beanspruchten Platten : aus Avional M. hart vergütet by Fritz Stüssi( Book )

1 edition published in 1951 in German and held by 1 WorldCat member library worldwide

Ionospheric Effects Induced by Precipitating Auroral Electrons. HAES Report No. 14( Book )

1 edition published in 1975 in English and held by 1 WorldCat member library worldwide

The results of a coordinated experiment conducted in the auroral zone on 8 December 1971 were used to determine whether the AURORA computer code includes all of the important processes associated with the precipitation of electrons in the atmosphere. A precipitating electron flux was measured with the 1971-089A satellite simultaneously with ionospheric electron number-density distribution measurements using the Chatanika incoherent-scatter radar. The electron density distribution was compared with the distribution computed by the AURORA code, using the measured electron flux as input. The AURORA code was used to compute energy-deposition profiles in the atmosphere due to the precipitation of electrons released by high-altitude nuclear detonations
Theoretical investigation of geomagnetically trapped electrons from high-altitude nuclear explosions( Book )

1 edition published in 1964 in English and held by 1 WorldCat member library worldwide

The report describes the results of a theoretical effort directed toward the identification of the loss mechanisms responsible for the eventual removal of electrons from the trapped population. The principal effort is directed toward the clarification of the role of the atmosphere in removing the electrons
Improvement of Specter II Code: Injection and Evolution of an Artificial Radiation Belt( Book )

1 edition published in 1979 in English and held by 1 WorldCat member library worldwide

Further improvements have been made in the SPECTER codes which compute the nuclear environment resulting from a high-altitude nuclear explosion and irradiation of satellites in that environment. A realistic model has been developed for the computation of fission-debris distribution in the magnetosphere. The model uses as input the distribution of debris and hot ionized air in the vicinity of the magnetic bubble. It computes the subsequent evolution of the distribution as the plasma expands along and across the magnetic field. The motion across the magnetic field is determined by using an equivalent LCR circuit to find the ionospheric currents, which neutralize the transverse polarization fields. For a yield larger than 1 Megaton it was found that the tube containing the debris was convected outward from an initial L of 1.16 to beyond the maximum L value for trapping
Versuchsbericht uber das Ausbeulen der auf einseitingen, gleichmassig und ungleichmassig verteilten Druck beanspruchten Plattes aus Avional M. hart vergutet by F Stussi( Book )

1 edition published in 1951 in German and held by 1 WorldCat member library worldwide

Assessment of Processes Related to Plasma Irregularities( Book )

1 edition published in 1977 in English and held by 1 WorldCat member library worldwide

The occurrence of plasma irregularities that affect radio-wave propagation is assessed both for naturally-occurring disturbances and for disturbances resulting from a high-altitude nuclear explosion. Data obtained with the S3-3 satellite reveal that high electrostatic potential differences - to 8 kV - with associated plasma irregularities, often occur along the magnetic field at high latitudes. In a detailed analysis of electron and ion pitch-angle and energy distributions measured on the satellite, the potential differences below and above the satellite, and the potential distribution above the satellite, were determined. The properties of the potential structure, together with concurrent observations of electrostatic waves, indicate that the potential is supported by anomalous resistivity. Analysis of the wideband data reveals that the scintillation activity has a spatial structure and occurrence similar to those of discrete auroral arcs and electric fields. The general morphology of the scintillations at high latitudes is described, and some interpretations of the data are suggested. The electric fields and currents induced by the debris plasma and fission beta-decay electrons in the magnetosphere due to a high-altitude nuclear explosion are estimated. For large bursts, the currents, both along and across the magnetic field, exceed well-established plasma-instability criteria, resulting in the formation of plasma irregularities. The region over which they are expected to occur extends as much as 60 deg in longitude east of the burst and, north of the burst, to latitudes near the auroral zone. (Author)
Distribution function of magnetically confined electrons in a scattering atmosphere( Book )

1 edition published in 1960 in English and held by 1 WorldCat member library worldwide

The journey into the future for Swiss principal companies? by U Landolf( )

in English and held by 1 WorldCat member library worldwide

This article explains the impact new interpretations of principal company taxation by the Swiss federal tax authorities will have on all existing companies benefiting from circular no. 8
CRRES ONR-307 Experiment Data Analysis( )

1 edition published in 1997 in English and held by 1 WorldCat member library worldwide

A number of scientific results have been obtained from analysis of the CRRES ONR-307 energetic particle and ion data, concentrating on three key areas of investigation: particle precipitation and wave particle interactions, radiation belt and ring current modeling, and dynamic event studies. Utilizing the ONR-307 particle data together with plasma wave data from other instrumentation on CRRES, we have studied, for the first time from the same spacecraft in the outer belt region, the simultaneous nature of waves and precipitating electrons near the equator, both for trapped particles and narrow particle dropouts. These studies showed that there is a general correlation between wave intensities and electron fluxes. Investigation of the ion composition data during the large magnetic storm of March 1991 revealed detailed structure of the ring current, allowed mapping of the structure for the first time, and showed dynamic transport of hydrogen, helium, and oxygen ions to lower L-shells. The low energy ion mass spectrometers observed new phenomena near the equator where pitch-angle distributions are asymmetric for long periods of time during geomagnetic storms. These distributions were caused by parallel electric fields that appear to be induced by increasing Birkeland currents and by decreasing tail currents
S'A' : DB-Tunnel Herblingen : W'M' : Zur statischen Berechnung des Bahntunnels by A Steiner( )

1 edition published in 1967 in German and held by 0 WorldCat member libraries worldwide

 
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Languages
English (13)

German (6)