|
1. |
William C. Ackermann 1913–1988 |
|
Eos, Transactions American Geophysical Union,
Volume 70,
Issue 5,
1989,
Page 65-69
Stanley A. Changnon,
Preview
|
PDF (1701KB)
|
|
摘要:
William C. (Bill) Ackermann was a nationally known hydrologist who helped set the nation's water resources policies and the research agenda for the field of hydrology during the 1960s and 1970s. Bill Ackermann achieved a position of national recognition and influence following a career route that was very different than that of most scientists.He learned the fundamentals of hydrology at the Unviersity of Wisconsin (graduating in 1935) and during 20 years as a hydrologist with the Tennessee Valley Authority. After a short stint with the Agricultural Research Service, Bill Ackermann became Chief of the Illinois State Water Survey in 1956, remaining in that capacity for 23 years. Ackermann's experience as a practicing hydrologist provided him with the sound foundation needed to become a leader in hydrology.
ISSN:0002-8606
DOI:10.1029/89EO00036
年代:1989
数据来源: WILEY
|
2. |
Global quiet day field variation model WDCA/SQ1 |
|
Eos, Transactions American Geophysical Union,
Volume 70,
Issue 5,
1989,
Page 66-74
Wallace H. Campbell,
Edward R. Schiffmacher,
Herbert W. Kroehl,
Preview
|
PDF (287KB)
|
|
摘要:
The quiet daily variations of the geomagnetic field, called Sq, have been modeled for the extremely quiet (solar‐terrestrial disturbance) conditions using the digital values from magnetograms obtained from a worldwide distribution of observatories. This model, WDCA/SQ1, has been deposited at World Data Center A for Solar Terrestrial Physics as a set of data files and a Fortran computer program for retrieving the quiet variation field values at any world location, day of the year, and time of day. The WDCA/SQ1 model does not yet contain a solar‐cycle adjustment; it is a best representation for the sunspot minimum period. Presently, the dependence on year is just an adjustment for the geomagnetic coordinate system. Nevertheless, even in active years the model provides an adequate description of the minimum Sq chan
ISSN:0002-8606
DOI:10.1029/89EO00039
年代:1989
数据来源: WILEY
|
3. |
Automatic geophysical observatories |
|
Eos, Transactions American Geophysical Union,
Volume 70,
Issue 5,
1989,
Page 67-67
Anonymous,
Preview
|
PDF (301KB)
|
|
摘要:
To extend Antarctic science support capacity, the Division of Polar Programs of the National Science Foundation is developing Automatic Geophysical Observatories (AGOs). The AGO program was initiated at the urging of the upper atmospheric physics research community for ionospheric, magnetospheric, and thermospheric studies and aeronomy. However, it is expected that the AGOs will have other uses, such as tropospheric or stratospheric chemistry, seismology, or the collection of meteoric dust.The AGOs will be transportable to almost any site in Antarctica. It is expected that the first two will be deployed in the field during the austral summer of 1990–1991, with two more being deployed each summer up to a total of six AGOs. It is probable that measurements made at AGOs could be complemented by similar measurements at manned stations, and it is encouraged that such possibilities be explore
ISSN:0002-8606
DOI:10.1029/89EO00040
年代:1989
数据来源: WILEY
|
4. |
AGU elects 1989 Fellows |
|
Eos, Transactions American Geophysical Union,
Volume 70,
Issue 5,
1989,
Page 72-72
Anonymous,
Preview
|
PDF (127KB)
|
|
摘要:
Twenty‐two distinguished scientists have been elected Fellows of the Union. Fellows are scientists who are judged by their peers as having attained ackowledged eminence in a branch of geophysics. The number of Fellows elected each year is limited to 0.1 % of the total membership at the time of election. The newly elected Fellows are Walter Alvarez, University of California, Berkeley; John R. Booker, University of Washington, Seattle; Peter G. Brewer, Woods Hole Oceanographie Institution, Woods Hole, Mass.; Michael H. Carr, U.S. Geological Survey, Menlo Park, Calif.; Gedeon Dagan, Tel Aviv University, Israel; James H. Dieterich, USGS, Menlo Park; Thomas Dunne, University of Washington, Seattle; Jack Fooed Evernden, USGS, Menlo Park; Edward A. Flinn, NASA Headquarters, Washington, D.C.; Arnold L. Gordon, Lamont‐Doherty Geological Observatory, Palisades, N.Y.; Gerhard Haerendel, Max Planck Institut, Garching, Federal Republic of Germany; David L. Kohlstedt, Cornell University, Ithaca, N.Y.; Robert A. Langel, NASA Goddard Space Flight Center, Greenbelt, MD; James G. Moore, USGS, Menlo Park; Marcia Neugebauer, Jet Propulsion Laboratory, Pasadena, Calif. Robert C. Newton, University of Chicago, Illinois; John A. Orcutt, Scripps Institution of Oceanography, La Jolla, Calif.; Robert B. Smith, University of Utah, Salt Lake City; Bengt U. Sonnerup, Dartmouth College, Hanover, N.H.; Martin A. Uman, University of Florida, Gainesville; Joe Veverka, Cornell University; and James C.G. Walker, University of Michigan, Ann Ar
ISSN:0002-8606
DOI:10.1029/EO070i005p00072-02
年代:1989
数据来源: WILEY
|
5. |
Better dates for Arctic dinosaurs |
|
Eos, Transactions American Geophysical Union,
Volume 70,
Issue 5,
1989,
Page 74-74
Edwin H. McKee,
James E. Conrad,
Brent D. Turin,
Preview
|
PDF (1684KB)
|
|
摘要:
The Prince Creek Formation near Ocean Point on the Arctic coastal plain of northern Alaska contains hadrosaur (duck‐billed dinosaur) bones, as well as an abundant fauna of mollusks, ostracodes, brachiopods, foraminifers, and palynomorphs. Evaluation of the marine mollusks and ostracodes suggested a Paleocene age for these strata toMarincovich et al. [1985]. A fission‐track age on zircon of 50.9 +/− 7.7 Ma from an interbedded tephra [Carter et al., 1977]suggested that they could be as young as early Eocene. If the mollusk, ostracod, and fission‐track ages are correct, the hadrosaurs would be of early Cenozoic age—one of the few recorded occurrences of dinosaurs younger than Cretaceous. The foraminifers, pollen, and spores, however, strongly suggest a Late Cretaceous age for their beds [Brouwers et a
ISSN:0002-8606
DOI:10.1029/89EO00042
年代:1989
数据来源: WILEY
|
6. |
Observatory changes hands |
|
Eos, Transactions American Geophysical Union,
Volume 70,
Issue 5,
1989,
Page 75-75
Lisa A. Wainger,
Preview
|
PDF (149KB)
|
|
摘要:
The Carnegie Institution of Washington (D.C.) announced on January 5 that it will transfer control of the Mount Wilson Observatory, which it has managed since 1904, to the Mount Wilson Institute, a private group established in 1986. The Mount Wilson Institute's board is made up of representatives from the Carnegie Institution, Los Angeles County Museum of Natural History, Los Angeles County Department of Parks and Recreation, U.S. Forest Service, the southern California business community, and the astronomy departments of the University of Southern California and University of California, Los Angeles.
ISSN:0002-8606
DOI:10.1029/89EO00044
年代:1989
数据来源: WILEY
|
|