|
1. |
Comment on “Pioneer Saturn results summarized” |
|
Eos, Transactions American Geophysical Union,
Volume 61,
Issue 6,
1980,
Page 57-57
Francis Birch,
Preview
|
PDF (130KB)
|
|
摘要:
On page 999 (EOS, 60(47), 998–999, 1979) of the very interesting summary of the Pioneer 11 results for Saturn, it is stated, ‘Gravity field analysis and temperature profile measurements suggest that the planet's core, extending out about 13,800 km from the center, is about twice the size of the earth but is so compressed by its huge mass that it contains about 11 earth masses of material, largely iron and rock.’ If the core radius is a s stated, it is 2.17 times the earth's radius, but the volume (size?) of Saturn's core is 10 times the volume of the earth. The mean density of Saturn's core (μ¯) is then 6t/m3versus 5.5 for the earth, nearly the same despite the higher pressure in Saturn
ISSN:0002-8606
DOI:10.1029/EO061i006p00057-01
年代:1980
数据来源: WILEY
|
2. |
High‐pressure research in Japan |
|
Eos, Transactions American Geophysical Union,
Volume 61,
Issue 6,
1980,
Page 58-58
Peter M. Bell,
Preview
|
PDF (141KB)
|
|
摘要:
The field of high‐pressure research in Japan has a long history, dating from early efforts at the beginning of this century to compress gases to an era of broad but intense activity during the past 20 years to study solid state properties of materials. In a recent report released by the U.S. Office of Naval Research located in Tokyo (E. F. Skelton, High‐Pressure Science and Technology in Japan, Rep. ONRTM1,1979), the research being done in 43 Japanese High‐Pressure Laboratories is described in detail. A large proportion of the research is related to solid state physics and chemistry, but an equally large proportion is related to geophysical studies. There are industrial programs in Japan to develop ‘superhard’ materials, such as diamond and cubic boron nitride, although the emphasis is on basic research rather than p
ISSN:0002-8606
DOI:10.1029/EO061i006p00058-01
年代:1980
数据来源: WILEY
|
3. |
Determination of earthquake parameters |
|
Eos, Transactions American Geophysical Union,
Volume 61,
Issue 6,
1980,
Page 62-64
E. R. Engdahl,
Preview
|
PDF (668KB)
|
|
摘要:
Improved seismic data and computer facilities have made dramatic progress possible in the computational techniques of earthquake location and the quantification of earthquakes. Some of the more proven techniques may well be ready for application in the routine reporting of earthquake parameters. Earthquake parameters serve as an important data base for the generalists and synthesizers in seismology and as an initial starting point for the applied theoreticians. The routine determination and reporting of source properties, for example, could make possible a new level of understanding in many seismological studies that would parallel the use of routinely reported earthquake locations to define boundaries of tectonic plates worldwide. These advances are made possible now through the availability of digitally recorded seismic data and of computer programs for interactive analysis that permit more rapid and efficient estimation of earthquake parameters.
ISSN:0002-8606
DOI:10.1029/EO061i006p00062
年代:1980
数据来源: WILEY
|
4. |
Pacific Northwest meeting |
|
Eos, Transactions American Geophysical Union,
Volume 61,
Issue 6,
1980,
Page 65-71
Anonymous,
Preview
|
PDF (2466KB)
|
|
摘要:
The Twenty‐Sixth Annual Meeting of Pacific Northwest AGU was held in Bend, Oregon, September 17–18, 1979, attracting 101 papers and approximately 400 participants. A special symposium on volcanism included five topical sessions: Large Explosive Eruptions, Volatiles in Volcanism, Rates of Magma Supply and Ages of Volcanic Systems, Magma Mixing, and Glacier‐Volcano Interactions. Prior to and following formal sessions, field trips were taken to Columbia River Basalt‐Clarno and John Day formations (Swanson, Wright, Robinson); Medicine Lake Highlands (Donnelly‐Nolan, Eichelberger, Heiken, Fink); Newberry Volcano (Macleod, Chitwood, Sherrod); High Cascades (Ed Taylor); Christmas Lake Valley (Heiken, Fisher); Brothers Fault Zone‐Harney Basin (Walker, Nolf). Session summa
ISSN:0002-8606
DOI:10.1029/EO061i006p00065
年代:1980
数据来源: WILEY
|
|