|
1. |
Geoid and density anomalies |
|
Eos, Transactions American Geophysical Union,
Volume 70,
Issue 22,
1989,
Page 625-631
Nikolaos Christou,
Petr Vaníček,
Colin Ware,
Preview
|
PDF (3667KB)
|
|
摘要:
Geoid undulations reflect density contrasts within Earth. In this study we show that many features known from other geophysical sources, such as gravity and magnetic anomaly maps, tectonic and geological maps, are also discernible in an accurate geoid. This suggests an association between these features and density anomalies. To demonstrate the usefulness of the geoid for geophysical interpretation we have chosen to use the “terrestrial contribution” to the UNB Dec. '86 Canadian geoid. This is a high‐resolution shorter wavelength (of degree and order higher than 20, or half wavelength less than 1000 km) part, which is readily available as a natural product of the geoid compilation when the UNB formulation of the geodetic boundary value problem is used. To facilitate the recognition of different features we have employed different image enhancement techniques. Hill shading combined with hypsometry (color coding of heights) appears to be the most promising in our co
ISSN:0002-8606
DOI:10.1029/89EO00177
年代:1989
数据来源: WILEY
|
2. |
Best Student Paper |
|
Eos, Transactions American Geophysical Union,
Volume 70,
Issue 22,
1989,
Page 626-626
Anonymous,
Preview
|
PDF (169KB)
|
|
摘要:
Michael A. Celaya received the award for best student paper in the GP Section at the AGU 1988 Fall Meeting in San Francisco. His talk, with coauthor Brad M. Clement, was “Time series analysis of two geomagnetic polarity transition records.”Mike received a B.A. in geophysics in 1986 from Texas A&M University, College Station. He remained at TAMU through August 1988 to earn a M.S. in geophysics under Brad Clement of the Ocean Drilling Program. His thesis work, presented at the Fall Meeting, involved a time series analysis of paleomagnetic polarity transition records, with the aim of better understanding the relationship between secular variation and transitional fie
ISSN:0002-8606
DOI:10.1029/EO070i022p00626-02
年代:1989
数据来源: WILEY
|
3. |
EUROTRAC tracks air pollution |
|
Eos, Transactions American Geophysical Union,
Volume 70,
Issue 22,
1989,
Page 627-627
Anonymous,
Preview
|
PDF (151KB)
|
|
摘要:
More than 400 scientists from nineteen countries have begun fourteen projects in the European Experiment on the Transport and Transformation of Environmentally Relevant Trace Constituents in the Troposphere over Europe, called EUROTRAC. The experiment's implementation phase will last eight years. An international scientific committee began developing the EUROTRAC plan and selecting the projects in 1985.Laboratory studies are directed toward understanding the heterogeneous and liquid‐phase reactions in clouds and the processes that lead to ozone formation in the troposphere. Advanced environmental instrumentation projects involve tunable diode lasers, laser sounding, and optical absorptio
ISSN:0002-8606
DOI:10.1029/89EO00181
年代:1989
数据来源: WILEY
|
4. |
Australian Conference |
|
Eos, Transactions American Geophysical Union,
Volume 70,
Issue 22,
1989,
Page 632-632
Phil Schmidt,
Preview
|
PDF (305KB)
|
|
摘要:
The one‐day seminar Rockmagnetism, Palaeomagnetism and Geomagnetism: Current Paradigms and Problems was held November 24, 1988, in Sydney, Australia, at the Commonwealth Scientific and Industrial Research Organization (CSIRO) Laboratories, North Ryde. It was convened jointly by the CSIRO and the Solid Earth Geophysics Specialist Group of the Geological Society of Australia and is expected to become a regular event.Contributions included Geomagnetic changes 1000–1500 A.D. from Thailand (and other parts of the world), from Mike Barbetti of Sydney University; Preliminary paleomagnetic results from Late Devonian redbeds from the south NSW coast, Gordon Thrupp of Macquarie University; Domain structure of PSD and MD grains and its temperature rearrangement‐I, Valera Shcherbakov, Academy of Science, U.S.S.R.; Domain structure of PSD and MD grains and its temperature rearrangement‐II, from Dave Clark of CSIRO; The Tertiary APWP of Australia, from Bob Musgrave of Australian National University (ANU)
ISSN:0002-8606
DOI:10.1029/89EO00180
年代:1989
数据来源: WILEY
|
|