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1. |
Impact of technology on geophysics |
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Eos, Transactions American Geophysical Union,
Volume 60,
Issue 44,
1979,
Page 769-771
Homer E. Newell,
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摘要:
Geophysics involves the application of the principles of physics to the study of the earth as a planet. As a result of the complexities and the variations in time and position, geophysical research places demands on a wide range of technological capabilities, including instrumentation, transportation, communications and computation. This paper discusses the impact of these four aspects of technology on geophysics. It is based on a report of the Geophysics Study Committee of the National Academy of Science. The chapters in that report examine the technologies of greatest importance within the individual disciplines of geophysics; they include a brief review and 11 essays that provide examples of the ways in which technology has directly influenced geophysical research and corresponding practical applications. They also draw attention to major areas of technology that are likely to have a significant impact on the future of geophysics.
ISSN:0002-8606
DOI:10.1029/EO060i044p00769
年代:1979
数据来源: WILEY
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2. |
Solar dimensions |
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Eos, Transactions American Geophysical Union,
Volume 60,
Issue 44,
1979,
Page 771-772
Anonymous,
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摘要:
Fluctuations of the processes within the sun that affect its dimensions could be of great concern to astronomers who are interested in the sun's geometric position relative to the stars. Fluctuations that involve correlative changes, such as solar brightness and emissions, could have a range of implications including geological effects and effects on all life at the earth's surface. The sun's dimensions, spin rate, magnetic activity, and brightness may be fluctuating over short periods from days to years, according to a number of studies described in recent issues ofScience, Smithsonian Institution Research Reports, and Physics Today. Of course the surface features and magnetic activity of the sun are known to fluctuate and have changes that follow oscillatory patterns, but these changes are background noise to solarwide effects.
ISSN:0002-8606
DOI:10.1029/EO060i044p00771
年代:1979
数据来源: WILEY
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3. |
Lightning as source of environmentally important gases |
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Eos, Transactions American Geophysical Union,
Volume 60,
Issue 44,
1979,
Page 772-772
Anonymous,
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PDF (137KB)
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摘要:
Laboratory tests conducted at the NASA‐Langley Research Center have shown that an electrical discharge approximately equal to that of lightning can produce trace amounts of carbon monoxide and nitrous oxide.Although the annual global rates of production owing to lightning appear to be several orders of magnitude below that owing to other sources, the level of nitrous oxide is twice as great and carbon monoxide is increased one hundred fold in the vicinity of the lightning bol
ISSN:0002-8606
DOI:10.1029/EO060i044p00772-01
年代:1979
数据来源: WILEY
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4. |
NOAA deploys two new buoys |
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Eos, Transactions American Geophysical Union,
Volume 60,
Issue 44,
1979,
Page 773-773
Anonymous,
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摘要:
A deep ocean data buoy has been deployed recently in the Gulf of Mexico, by the National Oceanic and Atmospheric Administration (NOAA) with the assistance of the U.S. Coast Guard, to provide additional meteorological data for forecasting the drift of oil from the Campeche oil spill.The NOAA buoy will be anchored 65 miles off the Texas coast, in 4800 feet of water at 26.5°N, 96°W, in front of the expected drift of oi
ISSN:0002-8606
DOI:10.1029/EO060i044p00773-01
年代:1979
数据来源: WILEY
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5. |
Stellar variability and its consequences for the Sun: A workshop held in Tucson, Arizona, March 1–2,1979 |
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Eos, Transactions American Geophysical Union,
Volume 60,
Issue 44,
1979,
Page 775-775
W. C. Livingston,
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PDF (99KB)
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摘要:
Attempts to understand solar change and its influence on the earth are frustrated by the brevity of our life spans. The few decades of modern solar‐terrestrial data hint at secular modifications, but we can only speculate what the sun has in store for us and on what time scale. Yet the sky abounds with stars similar to the sun—some older, some younger—and through these living examples, we ought to be able to look into the future and past. This workshop assessed the technology for observing such solar‐type stars (by means of precision stellar spectroscopy and photometry), considered the available evidence, and inquired as to what questions needed answers in order for scientists to decide between various proposed theoretical models of stellar/solar activity mec
ISSN:0002-8606
DOI:10.1029/EO060i044p00775
年代:1979
数据来源: WILEY
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