摘要:

Antonio Marussi, one of the most prominent geodesists of this century, died in Trieste, Italy, on April 24, 1984, at the age of 75. Blessed with good health and a robust physical constitution for most of his life, he was struck down by amyotrophic lateral sclerosis (Lou Gehrig's disease) which he had contracted in 1982.Marussi is best known among geodesists as the father of modern three‐dimensional geodesy. Following an initial presentation at the 1948 Oslo General Assembly of the IUGG, he published in 1949 in theBulletin Géodésiquean article entitled “Fondements de géométrie differentielle absolue du champ potential terrestre,” acknowledged now as one of the seminal works of the geodetic literature. In this and subsequent papers, Marussi developed in a general, rigorous, mathematical setting a unified approach to the solution of both geometric and physical problems in geodesy, obliterating the artificial distinction between horizontal and vertical which had been built up by geodesists over many years because of observational difficulties. He thus introduced many geodesists to the 20th century by demonstrating the value and, indeed, the necessity of advanced mathematical techniques like the tensor calculus and by anticipating useful data to be obtained by observations on close extraterrestrial objects like s

ISSN:0002-8606    

DOI:10.1029/EO065i037p00689-01

年代:1984

数据来源: WILEY

摘要:

On July 1 I began my duties as president of the Hydrology Section of AGU. I took over a healthy Section, recognized as the leading scientific society in the field of hydrology. I also am taking over a Section whose position within AGU is strong and influential. These two facts are a tribute to my predecessors, Peter Eagleson and J im Wallis. They have shepherded the Hydrology Section through an important period of technical and political growth, I will try to maintain the pace.During my tenure as president I intend to use our new WaterWatch column as a means of communication with the membership. I hope to keep you informed on the technical and administrative issues that arise and also to use this forum to solicit your views on directions that you would like to see us take. As a first attempt at this type of interaction, I have prepared a questionaire, which appears below. If you have suggestions for technical sessions or Chapman Conferences, if you have views on the various AGU publication programs, or if you can suggest candidates for AGU awards, I urge you to fill out the questionaire and return it to me.

ISSN:0002-8606    

DOI:10.1029/EO065i037p00690-01

年代:1984

数据来源: WILEY

摘要:

The special session on “Sediment Storage in Rivers and Estuaries,” which was held at the AGU Spring Meeting, included 14 papers, most of which discussed an aspect of sediment storage in rivers. Two papers, one by Brush and another by Smith, Shoemaker, and Miller covered topics in estuarine sedimentation. In general, the papers in the session could be divided into two main categories: Papers that discussed long‐term sedimentation rates and methods of dating sediments, and papers that discussed locations and mechanisms of sediment deposition. Obviously, the time scale determines not only the methods of analysis, but also the scientific questions that are asked. This was demonstrated by the two summary papers. Meade discussed short‐term sedimentation rates and the role that channel morphology and slope play in determining sites of sediment deposition. Trimble presented long‐term models of sediment storage and erosion for different clima

ISSN:0002-8606    

DOI:10.1029/EO065i037p00691-01

年代:1984

数据来源: WILEY

摘要:

Beginning in 1976, the Committee on Geodesy of the National Academy of Sciences/National Research Council has administered a Senior Scientist Program supported by the National Geodetic Survey of the National Oceanic and Atmospheric Administration (NOAA). Under this program, awardees have spent up to a year in residence at the National Geodetic Survey, conducting research in geodesy and related fields. Through the summer of 1984, 15 prominent scientists have participated, producing more than 20 papers published in a NOAA publications series or in professional journals.The second awardee was Peter Meissl, Professor of Geodesy at the Technical University of Graz, Austria, who spent 8 months during 1977 at the National Geodetic Survey. His work, “A Priori Prediction of Roundoff Error Accumulation in the Solution of a Super‐Large Geodetic Normal Equation System,” was released as a NOAA professional paper, published hardbound as an acknowledgment of the permanence of the achievement. His contribution was so outstanding that he was invited to return for the summer of 1982. But, tragically, in May 1982 he was killed in a mountain‐climbing accident ne

ISSN:0002-8606    

DOI:10.1029/EO065i037p00692-02

年代:1984

数据来源: WILEY

摘要:

This volume is the proceedings of a symposium held at Carleton College to celebrate the 50th anniversary of its Department of Geology and to honor the founder of that department, Larry Gould, later the president of Carleton and long an internationally prominent figure in the area of polar research. The title of the volume may lead some to anticipate a more comprehensive treatment of the “revolution” than its articles provide. However, its stated purpose is to illuminate just how the substantial changes of recent decades came about in each of a wide variety of areas within earth science, in effect providing a set of case studies of the revolution. In this it succeeds admirably.The dramatic evolution of ideas in geotectonics is not directly treated here; indeed, it would be difficult to say much that is new in doing so. Instead, most of the 31 articles in this paperbound volume focus on developments in specific fields ranging from experimental rock deformation (considered by Tullis and Tullis) to the geology of Antarctica (by Rowley). A noteworthy and distinguishing feature of this collection is that the articles provide lucid reviews at a level accessible to undergraduates. Especially valuable for their concise treatment of major areas are papers on advances in high pressure experimentation (by Bishop), on the development of ideas about Archean tectonics (by Southwick), on current thinking about Precambrian crustal evolution (by Ernst) and on the application of radiogenic isotopic systems to geochronology and petrogenesis (by Bickford). Similarly, Hanor describes the development of thinking about subsurface sedimentary brines, Carson reviews ideas on sediment deposition and deformation at convergent margins, and Collier discusses the renaissance in invertebrate paleontology. Also present are excellent papers on aspects of geomorphology, hydrogeology, archaeological geology, venusian tectonics, and 11 articles on topics in economic geology and mineral and energy resources. Among the latter, all of which are very clearly written, a paper by Albers on the leadership role of the U.S. Geological Survey in meeting national mineral and energy needs is particularly recommen

ISSN:0002-8606    

DOI:10.1029/EO065i037p00693-01

年代:1984

数据来源: WILEY

摘要:

Mr. President, fellow members of the American Geophysical Union, and members of the U.S. Navy, it gives me great pleasure to present the citation for the 1984 AGU/USN Maurice Ewing Medal, to be awarded to Dr. Xavier Le Pichon.After receiving diplomas in several disciplines of geology, physics, and geophysics from the University of Strasbourg during the 1950s, Xavier came to the Lamont‐Doherty Geological Observatory as a visiting scientist where he put his knowledge to practice until 1968. In 1966 he received the Doctor of Sciences degree from the University of Strasbourg. Returning to France in 1968, Xavier spent the next five years at the Centre Océanologique de Bretagne in Brest where he founded the Research Group. From Brest he moved to the headquarters of CNEXO in Paris for 5 years and then to the University of Paris to found the new Laboratoire de Géodynamique. From his present position of professor at the university he will move next year to become director of the Geology Laboratory in the Ecole Normale Supérieure, one of the French Grandes Ec

ISSN:0002-8606    

DOI:10.1029/EO065i037p00699

年代:1984

数据来源: WILEY

摘要:

Eric L. Butler, a chemistry and oceanography instructor at Phillips Academy in Andover, Mass., has been selected as the 1984–85 AGU Congressional Science Fellow. Last week he began his 1‐year stint on Capitol Hill AGU's eighth Congressional Science Fellow.Butler, a member of AGU's Ocean Sciences section, received his Ph.D. from the Graduate School of Oceanography of the University of Rhode Island. While his formal course work focused on chemistry and oceanography, his research has dealt largely with atmospheric chemistry and the measurement and geochemistry of trace organic compounds. He has been associated with the Center for Atmospheric Chemical Studies at the University of Rhode Island since its inception several years

ISSN:0002-8606    

DOI:10.1029/EO065i037p00700

年代:1984

数据来源: WILEY