摘要:

Beginning about 1930, Arthur Holmes and Felix Andries Vening Meinesz both argued that subcrustal convection currents were inevitable because of differential radioactive heating and that these currents exerted a viscous drag on the base of the crust. Holmes and Vening Meinesz, however, were in distinct disagreement on the mechanism by which convection currents caused crustal “downbuckling” at island arcs, and more generally, the global pattern of ascending and descending convection currents. Hence it is somewhat misleading to portray them as scientific allies, as is commonly d

ISSN:0002-8606    

DOI:10.1029/88EO01145

年代:1988

数据来源: WILEY

摘要:

Existing models of the plasma distribution and dynamics in magnetosphere/ionosphere systems form a patchwork quilt of different techniques and boundaries chosen to define tractable problems. With increasing sophistication in both observational and modeling techniques has come the desire to overcome these limitations and strive for a more unified description of these systems. On the observational side we have recently acquired routine access to diagnostic information on the lowest energy bulk plasma, completing our view of the plasma and making possible comparisons with magnetohydrodynamic calculations of plasma moments. On the theoretical side, rising computational capabilities and shrewdly designed computational techniques have permitted the first attacks on the global structure of the magnetosphere. Similar advances in the modeling of neutral atmospheric circulation suggest an emergent capability to globally treat the coupling between plasma and neutral gases.

ISSN:0002-8606    

DOI:10.1029/88EO01147

年代:1988

数据来源: WILEY

摘要:

AGU is growing in membership, in publications, in meetings and in the myriad of public sector and educational programs on which the membership has placed a high priority. At the May 1988 Council Meeting, outgoing President Peter S. Eagleson outlined some of the major objectives that the Union had in 1986 and the accomplishments in those areas in a “State‐of‐the‐Union” message that reflected pride in the Union's accomplishments and optimism for the future.In the area of public affairs, the Union had resolved to take an active role in elevating the national consciousness about geophysics and in influencing public decisions affecting our sciences. Among other things during the 1986–88 biennium, AGU:Adopted a procedure for developing advocacy positions, which appears later in this issue;Developed the Planet Earth Initiative and a position on earmarking of Federal funds, both of which are published in this issue;Began a program of advocacy on behalf of the Planet Earth Initiative; andBegan the development of several othe

ISSN:0002-8606    

DOI:10.1029/88EO01146

年代:1988

数据来源: WILEY

摘要:

The Meetings Committee has defined the following objectives for the AGU Spring and Fall Meetings, the two annual meetings of AGU that are national in scope.Provide the best possible forum for the communication of the results of on‐going or recently completed research to attract as large a fraction as possible of the active geophysical research community.Enhance personal contact among individual scientists.Enhance interdisciplinary understanding.Provide for discussion of “health of the science” issues.Serve as an educational forum for individual scientists to broaden their understanding of the scope of geophysical res

ISSN:0002-8606    

DOI:10.1029/EO069i041p00919

年代:1988

数据来源: WILEY

摘要:

A full program of honors and awards recognizes AGU members and other outstanding geophysicists who make significant contributions to geophysical knowledge and understanding. In addition to the presentation of the medals and awards listed below, a select committee annually confers the designation of Fellow on AGU members who have distinguished themselves in geophysics.

ISSN:0002-8606    

DOI:10.1029/EO069i041p00924

年代:1988

数据来源: WILEY

摘要:

The purposes of the AGU as defined in the statutes are as follows:(a) To promote the scientific study of the earth and its environment in space and to make the results of such studies available to the public.(b) To promote cooperation among scientific organizations whose objectives include the furtherance of knowledge in the geophysical disciplines.(c) To initiate and participate in geophysical research programs, including those that depend upon international cooperation.(d) To advance the various geophysical disciplines by scientific discussion, publication and dissemination of information, and by sponsorship of scientific and technical symposia, colloquia, and meetings.

ISSN:0002-8606    

DOI:10.1029/EO069i041p00927-02

年代:1988

数据来源: WILEY

摘要:

Administrative Committees are responsible for those functions required for the overall performance or well‐being of AGU as an organization. These committees are Audit and Legal Affairs, Budget and Finance*, Development, Nominations*, Planning, Statutes and Bylaws*, Tellers.Operating Committees are responsible for the policy direction and operational oversight of AGU's primary programs. The Operating Committees are Education and Human Resources, Fellows*, Information Technology, International Participation*, Meetings, Public Affairs, Public Information, Publications

ISSN:0002-8606    

DOI:10.1029/EO069i041p00933

年代:1988

数据来源: WILEY

摘要:

A Fellow of the American Geophysical Union shall be a scientist who has attained acknowledged eminence in a branch of geophysics. The total number of Fellows elected each shall not exceed 0.1% of the total membership at the time of election. Recipients of AGU medals and awards are also accorded Fellowship in the Union.

ISSN:0002-8606    

DOI:10.1029/EO069i041p00938

年代:1988

数据来源: WILEY

摘要:

You can extend your commitment to the continuing vitality .of geophysics by helping AGU to build funds that will provide for new initiatives and assist in funding some of the nonrevenue programs of AGU, such as the congressional science fellowship, minority student scholarships, and student travel grants. The AGU Development Committee is seeking gifts and contributions toward building the endowment of the Union: The vitality of AGU and the vitality of geophysics march hand in hand.Four categories of supporting membership are offered by the Union: Individual Supporting Member ($80 per year), Life Supporting Member ($1500), Sustaining Member ($5000), Benefactor ($10,000). Benefactors, Sustaining, and Life Supporting Members pay no further dues.

ISSN:0002-8606    

DOI:10.1029/EO069i041p00939-01

年代:1988

数据来源: WILEY

摘要:

The American Geophysical Union recommends that the U.S. take the initiative amongst nations to establish an international observing system which, in conjunction with an active research program, will allow scientists to understand natural and anthropogenic changes in the Earth's environment and the global‐scale forces that control them. Results from such a program will improve the assessment and prediction of natural disasters and climatic changes, may permit the prevention of some anthropogenic climatic changes, and will enhance the wise use of natural resources. Participation by all nations in both the space and ground‐based activities of this Planet Earth Initiative (PEI) should be encouraged. Special attention should be given to eliciting the cooperation of the U.S.S.R. in the initiation of this prog

ISSN:0002-8606    

DOI:10.1029/EO069i041p00940

年代:1988

数据来源: WILEY