History of the International Association of Geodesy     

Charles Whitten 《Journal of Geodesy》1988,62(3):197-206

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A simple model for strong ground motions and response spectra     

Erdal Safak  Charles Mueller  John Boatwright 《地震工程与结构动力学》1988,16(2):203-215

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The Combined EMT/VES Geophysical Method for Siting Boreholes   总被引：2，自引：0，他引：2  

Sarah Beeson  Charles R. C. Jonesa 《Ground water》1988,26(1):54-63

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DISCUSSION OF "Statistical Prediction Intervals for the Evaluation of Ground-Water Quality," by Robert D. Gibbons, July-August 1987 issue, v. 25, no. 4, pp. 455–465     

Charles B. Davis  Roger J. McNichols 《Ground water》1988,26(1):90-91

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Statistical Issues and Problems in Ground Water Detection Monitoring at Hazardous Waste Facilities     

Roger J. McNichols  Charles B. Davis 《Ground Water Monitoring & Remediation》1988,8(4):135-150

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Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska     

Thomas D. Hamilton  Gall M. Ashley  Katherine M. Reed  Charles E. Schweger 《Quaternary Research》1993,39(3)

Sediments exposed at Epiguruk, a large cutbank on the Kobuk River about 170 km inland from Kotzebue Sound, record multiple episodes of glacial-age alluviation followed by interstadial downcutting and formation of paleosols. Vertebrate remains from Epiguruk include mammoth, bison, caribou, an equid, a canid, arctic ground squirrel, lemmings, and voles. Radiocarbon ages of bone validated by concordant ages of peat and wood span the interval between about 37,000 and 14,000 yr B.P. The late Pleistocene pollen record is dominated by Cyperaceae, with Artemisia, Salix, Betula, and Gramineae also generally abundant. The fossil record from Epiguruk indicates that the Kobuk River valley supported tundra vegetation with abundant riparian willows during middle and late Wisconsin time. Large herbivores were present during the height of late Wisconsin glaciation as well as during its waning stage and the preceding interstadial interval. The Kobuk River valley would have been a favorable refugium for plants, animals, and possibly humans throughout the last glaciation.  相似文献   

THE MIDWEST FLOOD OF 1993: THE ROLE OF GROUND WATER AND A CONTINUING DISASTER     

Charles A. Job 《Ground water》1994,32(2):178-179

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Climatic variability on the scale of decades to centuries     

Charles W. Stockton 《Climatic change》1990,16(2):173-183

Climatic variations in the range of 10 to 100 years duration are perhaps of greatest consequence to mankind because; (1) they have a tendency to be regional in nature, (2) they affect third-world countries as well as more developed countries, and (3) they prevail over the planning horizons used in water resources, agriculture and many other disciplines. Documentation of the range of variability experienced regionally for various regions in the western United States as well as North Africa are examined. The recent high water-levels of the Great Salt Lake and other lakes in the Western United States and the prolonged recent drought in North Africa are examples discussed in detail.  相似文献   

Reliability of inexpensive charcoal and alpha-track radon monitors     

Douglas G. Mose  George W. Mushrush  Charles E. Chrosniak 《Natural Hazards》1990,3(4):341-355

A comparison between single short-term radon measurements and annual radon measurements in basements shows that significant uncertainties should be associated with the short-term measurements. Activated charcoal radon monitors which measure radon over a 3 to 7 day interval yield measurements that should carry a ± 90% uncertainty in terms of estimating annual radon concentration. Alpha-track radon monitors which measure radon over a 3 month interval should carry a ± 30% uncertainty. Decisions about home purchases, home remediation and the development of risk characterizations may often be incorrect if currently popular but unrealistically low estimates of uncertainty are applied to short-term radon measurements. Optimal results are obtained from year-long alpha-track measurements.  相似文献   

Age and paleoclimatic significance of the Stansbury shoreline of Lake Bonneville, Northeastern Great Basin     

Charles G. Oviatt  Donald R. Currey  David M. Miller 《Quaternary Research》1990,33(3)

The Stansbury shoreline, one of the conspicuous late Pleistocene shorelines of Lake Bonneville, consists of tufa-cemented gravel and barrier beaches within a vertical zone of about 45 m, the lower limit of which is 70 m above the modern average level of Great Salt Lake. Stratigraphic evidence at a number of localities, including new evidence from Crater Island on the west side of the Great Salt Lake Desert, shows that the Stansbury shoreline formed during the transgressive phase of late Pleistocene Lake bonneville (sometime between about 22,000 and 20,000 yr B.P.). Tufa-cemented gravel and barrier beaches were deposited in the Stansbury shorezone during one or more fluctuations in water level with a maximum total amplitude of 45 m. We refer to the fluctuations as the Stansbury oscillation. The Stansbury oscillation cannot have been caused by basin-hypsometric factors, such as stabilization of lake level at an external overflow threshold or by expansion into an interior subbasin, or by changes in drainage basin size. Therefore, changes in climate must have caused the lake level to reverse its general rise, to drop about 45 m in altitude (reducing its surface area by about 18%, 5000 km²), and later to resume its rise. If the sizes of Great Basin lakes are controlled by the mean position of storm tracks and the jetstream, which as recently postulated may be controlled by the size of the continental ice sheets, the Stansbury oscillation may have been caused by a shift in the jetstream during a major interstade of the Laurentide ice sheet.  相似文献