Издательство Wiley по журналам "Geophysical Research Letters"
Отображаемые элементы 21-40 из 3919
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(1991-07)High level ab initio calculations have been carried out on the 13C‐12C kinetic isotope effect of the CH4 + OH reaction in the atmosphere. The results agree quite well with both the absolute value of the isotope effect and ...
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(1986-06)Since 1978 we have conducted extensive gravity surveys in Central Honshu, Japan, to establish 5,345 new gravity stations. The results are synthesized into a Bouguer anomaly map with the data from other sources. The map ...
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(1994-12-15)A bounce‐averaged ring current kinetic model for arbitrary pitch angle, including losses due to charge exchange and Coulomb collisions along ion drift paths, is developed and solved numerically. Results from simplified ...
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(1994-01-15)We modelled a 1200 km long gravimetric profile in the North Baikal rift to assess the mechanical behaviour of the lithosphere, using a numerical model that accounts for realistic brittle‐elasto‐ductile rheology. We use ...
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(1990-01)New data are used to examine anomalously shallow paleomagnetic inclinations derived from previous analyses of Cretaceous DSDP sediments of the central western Pacific Ocean. While VRMs are shown to produce a similar effect, ...
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(1992-10-23)The French DORIS doppler satellite tracking/positioning system has been operational on the SPOT‐2 satellite since 1990. We have analyzed 80 days of data from 42 ground beacons and determined three dimensional site coordinates ...
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(1991-07)Absorption coefficients for pure bubble‐free ice are a critical element in theoretical efforts to determine levels of ultraviolet radiation reaching marine biota in and under a sea ice cover. A 3‐m block of ice was used ...
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(1984-12)The incoherent scatter radar facility (ISR) recently installed at Søndre Strømfjord, Greenland (inv. lat. = 74°) has been used to investigate events of substantially elevated E‐region temperatures related to the occurrence ...
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(1990-11)The absorption cross section of gaseous nitrous acid (HONO) in the actinic wavelength region (λ≥290 nm) of the solar radiation is mapped through laser photodissociation experiments. HONO is photodissociated by a tunable ...
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(1981-09)A factor of 10 increase in the Rn concentration in a shallow aquifer forerunning a shallow seismic swarm was observed at the island of Vulcano (Aeolian island arc). The peak of Rn anomaly preceded by about one month the ...
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(1991-10)Particle and field data from a pass of the AUREOL‐3 satellite through the polar cusp, several minutes after the southward turning of the IMF, are analyzed in detail. Superposed on the classical cusp, characterized by the ...
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(1984-12)Experimental evidence for a causal relationship between lightning and explosive equatorial spread F is presented. It is proposed that explosive spread F is produced by rapidly growing plasma instabilities, which are triggered ...
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(1991-07)The magnetic properties of the upper Cretaceous red‐limestones from the Montsec thrust sheet in the Pyrenees reveal an unusual arrangement of the unblocking temperatures and coercivities of the magnetic mineral phases, ...
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(1994-12-15)The GEOTAIL/Low Energy Particle (LEP) observations have revealed detailed features of acceleration and heating of cold ion beams in the plasma sheet boundary layer (PSBL). In the lobe region, the cold ion beams are flowing ...
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(1984-12)The sounding rocket payload SCEX (Several Compatible Experiments to utilize an electron accelerator; NASA flight 27.045) launched on January 27, 1982 from the Churchill Research Range provided an opportunity to observe the ...
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(1994-12-15)The acceleration process of minor heavy ions in the magnetotail reconnection layer is studied by 1D hybrid simulations. In the plasma sheet, different acceleration mechanisms are found to be operative according to the heavy ...
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(1981-07)We present results of both a linear and a nonlinear study of oxygen cyclotron waves and the associated oxygen heating. Linear theory predicts that oxygen cyclotron waves will have smaller growth rates than hydrogen cyclotron ...
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(1979-06)Satellite observations of southern hemisphere stratospheric ozone and temperature near the stratopause during October 1970 show these fields to have undergone large longitudinal variations, negatively correlated with each ...
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(1992-03-20)Comparison of Cartesian coordinates determined at collocated sites using two independent space techniques, very long baseline interferometry (VLBI) and Global Positioning System (GPS), shows remarkable agreement even when ...
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(1982-12)Measurements of air samples taken near the ground at different locations in urban as well as in rural areas show the presence of acetonitrile (CH3CN) in concentrations up to 7 ppbv. The measurements of this compound were ...
Отображаемые элементы 21-40 из 3919