摘要:

One of the prerogatives usually accorded a retiring President is a brief time for reflections as well as exhortations for the future. My reflections will be brief and limited to events that were visible to those who attended the 49th Annual Meeting of the Union in Washington, D. C, April 8–11,1968. The exhortations will be related to less visible actions of the Council during that same time, which need to be understood by the membership.The Annual Meeting was a great success by any standards, and, when viewed against the conditions which prevailed in Washington just before and during our visit, it was no less than remarkable. Over 2600 people registered for the meeting, and all of them must have considered whether the meeting could go on, and if so, whether to travel to a city torn by rioting and under heavy military guard. Undoubtedly there were inconveniences as a result of the early curfew and other restrictions, but there was a good‐humored acceptance of the matters that were out of our control. Most of us were captives in the hotel, but this was not without its benef

ISSN:0002-8606    

DOI:10.1029/TR049i002p00429

年代:1968

数据来源: WILEY

摘要:

Roger Revelle belongs to a nearly extinct breed of scientists called naturalists. He has pursued the study of the planet Earth with romantic attachment and dogged determination. On problems concerning a balanced judgment of its geology, chemistry, biology, and physics, he is probably without peer.Revelle was lucky to come to scientific maturity at the close of World War II. In those days it was difficult to go to sea on a scientific vessel without encountering opportunities for unexpected and often important discoveries. Roger Revelle was one of the men who recognized these opportunities.

ISSN:0002-8606    

DOI:10.1029/TR049i002p00431

年代:1968

数据来源: WILEY

摘要:

Over the short period of less than fifteen years, Eugene N. Parker has enriched the sciences of geophysics and astrophysics with an unbroken series of original contributions on the dynamics of the solar wind, magnetic field amplification in the geomagnetic dynamo, magnetic storm mechanisms, and the kinetic properties of the cosmic ray gas.Dr. Parker was born in Houghton, Michigan, in 1927. He received a Bachelor of Science degree from Michigan State College in 1948 and a Doctor of Philosophy degree from the California Institute of Technology in 1951. Dr. Parker held positions as instructor and later as assistant professor of mathematics, astronomy, and physics at the University of Utah from 1951 to 1955. In 1955, he joined the University of Chicago, where he is presently serving as a professor of physics and as a member of the staff of the Enrico Fermi Institute for Nuclear Studies.

ISSN:0002-8606    

DOI:10.1029/TR049i002p00435

年代:1968

数据来源: WILEY

摘要:

Today we establish a new award, and to dedicate this I will call on Dr. Nelson C. Steenland, who is Chairman of the Committee on the Bucher Fund. I also wish to express my appreciation to the Committee chaired by Dr. George Woollard which selected the initial recipient.

ISSN:0002-8606    

DOI:10.1029/TR049i002p00439

年代:1968

数据来源: WILEY

摘要:

Michael B. McElroy was born in Dublin on May 18, 1939. He completed a first‐class honors degree in 1960 and (at the age of 23) a Ph.D. in 1962 in applied mathematics at Queen's University of Belfast. Working under the guidance of Professors A. Dalgarno and D. R. Bates, he dealt in his thesis with quantal calculations of atomic collisions. Upon completion of his doctorate he came to the United States to work writh Professor Joseph 0. Hirschfelder at the University of Wisconsin. A year later, in 1963, he joined the staff of the Space Division, Kitt Peak National Observatory, where he holds the position of research associat

ISSN:0002-8606    

DOI:10.1029/TR049i002p00443

年代:1968

数据来源: WILEY

摘要:

On October 7, 1967, the day of the closing session of the Fourteenth General Assembly of the International Union of Geodesy and Geophysics, A. Nelson Sayre was stricken by a heart attack in Zurich, Switzerland, and died on October 12. With Mrs. Sayre, he was on an extended trip through Europe, Asia Minor, and North Africa. They had arrived in Zurich two weeks earlier from Turkey and Greece to attend this Assembly which was held in four cities in Switzerland. He maintained his headquarters in Zurich, which was the general headquarters for the Assembly, even though the sessions on hydrology (his prime geophysical interest) were being held in Berne. Although somewhat weakened by an intestinal disturbance when he arrived, he was in good spirits and seemed to regain his strength rapidly. He attended the meetings with zest and pleasure. On the morning that he was stricken, he was intending to leave for Vienna, skipping the final Plenary Session of the Assembly. So, when he did not appear, none in attendance was aware of his new difficulty which, at the outset, seemed not particularly severe. During his first days in the hospital he seemed to be making good progress; then suddenly on October 12, he was stricken by a massive attack.

ISSN:0002-8606    

DOI:10.1029/TR049i002p00445

年代:1968

数据来源: WILEY

摘要:

The International Upper Mantle Project, after two extensions of time, comes to a close at the end of Phase III, 1968–1970, as specified by the International Council of Scientific Unions and by various agreements with sponsoring governments. However, current worldwide studies relating to tectonic processes in the Earth's mantle and crust have been surprisingly fruitful, and this momentum and enthusiasm should be encouraged to continue into the 1970's by providing an agreed central theme or focus for continued collaboration and interchange among the many research groups and investigators working in solid‐Earth geophys

ISSN:0002-8606    

DOI:10.1029/TR049i002p00448

年代:1968

数据来源: WILEY

摘要:

I am especially pleased to be your speaker tonight, for I have long admired this organization and its ways of doing things. For nearly thirty years I have watched the American Geophysical Union prosper under wise leadership as the organization has met the changing challenges and opportunities of the times. When I first arrived in Washington in 1939 I worked under the directorship of John A. Fleming, one of the Union's great presidents. I have known personally most of the Union's presidents since that time. I had the special privilege of working with Ewing, Berkner, and Malone during my tenure as co‐editor of theJournal of Geophysical Research. More recently, the Union has continued to enjoy top leadership under Woollard and Ackermann, with a fine successor, Helmut Landsberg, named to carry o

ISSN:0002-8606    

DOI:10.1029/TR049i002p00451

年代:1968

数据来源: WILEY

摘要:

One of the ‘freshest’ heavily rayed craters on the Moon is the large nearly circular Copernicus. Copernicus is generally considered to be of impact origin [Shoemaker, 1962;Schmidt et al., 1967], and many of the small craters associated with it, including some of those arranged in chains, are ascribed to impacts of secondary fragments. Other authorities, however, cite many features of volcanic origin, including some within Copernicus itself [Green, 1967]. Volcanic features are even suggested by those generally advocating the predominance of impact mechanisms [Schmidt et al., 19

ISSN:0002-8606    

DOI:10.1029/TR049i002p00457

年代:1968

数据来源: WILEY

摘要:

The Operations Center of the European Space Research Organization has established a group that collects data required for space operation tasks. Some of the data are also important for experimenters in the field of space research: the data assist them in solving problems that arise in the numerical treatment of geophysical problems by use of digital computers.The use of magnetic activity indices and solar data is of great importance to the analysis of space experiments. The published indices had to be converted to a form accessible to computers. We have therefore stored these indices together with other useful data on magnetic tape that is compatible with most computers and easy to handle. From this method conversions to other input media can be performed without any difficulties. The large amount of data accumulated since January 1, 1932, is extremely difficult to handle without making errors if mechanical aids and automatic checking methods are not used. (The information now stored on tape consists of approximately one million digits.)

ISSN:0002-8606    

DOI:10.1029/TR049i002p00463

年代:1968

数据来源: WILEY