Издательство Wiley по названию
Отображаемые элементы 166-185 из 32023
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(1995-08-20)Measurements of key chemical and physical parameters made along continuous and selected long sections of polar ice cores provide reliable past snow accumulation rates and other environmental records. The prime accumulation ...
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(1967-09-01)The observation was made, using rocket‐borne radiation detectors, of a purely temporal 10‐cps periodicity in the flux of auroral electrons in the energy range 1–120 kev. The periodicity was biased toward the higher energy ...
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(1964-10-01)An electron density profile of the nighttime ionosphere was obtained by rocket observation of the Doppler shift of 10.2‐kc/s signals transmitted from the ground. The experiment showed a layer between the usual E and F ...
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(1978-03-20)The paper summarizes a 10‐year study of thunderstorms at Minneapolis by means of electric field signatures at the ground. The analysis considers the frequency of storms, the number of storm hours, and the number of storm ...
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(1994-10-10)The 600 ka Yellowstone caldera exhibits several signs of unrest, the most evident of which is historic ground deformation including both uplift and subsidence. We document deformation in the area of the southeastern caldera ...
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(1977-09-01)Airborne observations of auroral activity at midnight were conducted for a period of 9 hours by employing an ionospheric sounder and all‐sky cameras. During the observation period, two substorms occurred. The first substorm ...
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(1977-09-01)A constant local midnight flight by the Air Force Geophysics Laboratory airborne ionospheric observatory over the North American continent from Goose Bay, Labrador, to Fairbanks, Alaska, stayed under the midnight sector ...
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(1977-09-01)This paper and two companion papers describe a case study of multiple auroral phenomena in the midnight sector. The duration of the study was 12 hours on December 9, 1971. For 9 of the 12 hours the Air Force Geophysics ...
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(1972-07-01)Besides the well‐known 6‐month wave in geomagnetic activity and its recurrence tendency, no persistent 12‐month wave has been detected by harmonic analysis of consecutive monthly values. Such a 12‐month wave, however, can ...
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(1980-12-10)The Al2O3 solubility in orthopyroxene (OPx) coexisting with pyrope has been determined at several P‐T conditions in the system MgO‐Al2O3‐SiO2 (MAS), using synthetic crystalline starting mixtures and approaching from both ...
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(1993-12)The object of the present study is to introduce a means of comparing the Vostok and marine chronologies. Our strategy has been to use the δ18O of atmospheric O2 (denoted δ18Oatm) from the Vostok ice core as a proxy for the ...
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(1994-09-01)During 1957, as part of the program of the International Geophysical Year, the University of Iowa conducted a survey of cosmic ray intensity with equipment on balloon‐launched rockets (“rockoons”) over the range of geomagnetic ...
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(1981-03-17)A‐21 is the number designation given to an OMB (Office of Management and Budget) directive on cost accounting to universities and other institutions that receive federal research grants. This circular lays down rules for ...
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(1995-09-01)We have carried out a high‐resolution study of fluctuations in upwelling intensity along the Oman Margin, western Arabian Sea, through the last 19,130 years based on several marine microfossil indices of upwelling. We ...
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(1939-09)In the course of a general study of the frequency of occurrences of aurora in Scotland during the years 1858–1938 a well‐marked period of length about 27.3 days was found to exist. Commander W.R. Priston has found a similar ...
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(1990-11)A 2‐D stratospheric and mesospheric dynamical model including drag and diffusion due to gravity wave breaking is used to simulate winter mesospheric temperature inversions similar to those observed by Rayleigh lidar. It ...
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(1996-02-15)Relict plunge‐pool sedimentary sequences provide much longer paleoflood records than normally provided by slackwater deposits and other previously reported paleoflood sedimentary signatures. The only two relict plunge‐pool ...
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(1988-10)Three‐dimensional seismic modeling demonstrates that the intragraben horst‐like feature imaged on COCORP's Socorro‐Abo Pass survey in the Albuquerque Basin, New Mexico likely corresponds to the northeast‐plunging continuation ...
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(1990-12)A 400 year deuterium record has been obtained from a 154.3 m ice core drilled on Dalinger Dome (James Ross Island, Antarctic Peninsula). Based on a comparison between the isotope profile and the temperature data over the ...
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(1984-01-20)Evidence is presented for a 40‐ to 60‐day oscillation in the longshore current and temperature fluctuations that were measured during 1976 in the Somali Current regime off Kenya by Düing and Schott (1978). It is suggested ...
Отображаемые элементы 166-185 из 32023