Climate and ephemeral-stream processes: Twentieth-century geomorphology and alluvial stratigraphy of the Little Colorado River, Arizona
Richard Hereford
1988, GSA Bulletin (95) 654-668
During the first 40 years of the twentieth century, erosion was the dominant geomorphic process affecting the morphology of the Little Colorado River channel. The discharge regimen was one of frequent large floods and high annual discharge that created a wide sandy channel free of vegetation. In the 1940s and...
Water resources data Maryland and Delaware, water year 1987
R.W. James, R.J. Simmons, B.F. Strain
1987, Water Data Report MD-DE-87-1
No abstract available....
Bibliography of U.S. Geological Survey water-resources reports for Utah
1987, Utah Division of Water Rights Information Bulletin 28
This bibliography contains a complete listing to December 31, 1986, of reports relating to the water resources of Utah prepared by personnel of the U.S. Geological Survey. Discussions of the related subjects of geology, hydrology, and chemical quality of the water are included in many of the reports. The reports...
Base of moderately saline ground water in the Uinta Basin, Utah, with an introductory section describing the methods used in determining its position
Lewis Howells, M.S. Longson, Gilbert L. Hunt
1987, Technical Publication 92
The base of the moderately saline water (water that contains from 3,000 to 10,000 milligrams per liter of dissolved solids) was mapped by using available water-quality data and by determining formation-water resistivities from geophysical well logs based on the resistivity-porosity, spontaneous potential, and resistivity-ratio methods. The contour map developed from...
Seepage study of a 15.3-mile section of the central Utah canal, Pahvant Valley, Millard County, Utah
Michael Enright
1987, Technical Publication 91
Three sets of seepage measurements were made at ten canal sites and at all turnouts along a 15.3-mile section of the Central Utah Canal during the summer of 1986. The total loss for the 15.3-mile section averaged about 36 cubic feet per second or 2.4 cubic feet per second per...
Seepage studies of the Weber River and the Davis-Weber and Ogden Valley canals Davis and Weber Counties, Utah, 1985
L. R. Herbert, R.W. Cruff, D.W. Clark, Charles Avery
1987, Technical Publication 90
Studies of selected reaches of the Weber River, Davis-Weber Canal, and the Ogden Valley Canal in Davis and Weber Counties, Utah, were made to determine gains or losses of flow in those reaches. Three to five sets of seepage measurements were made on the river and each canal during 1985....
Morgan Hill, California Earthquake, April 1984
Henry Spall, editor(s)
1987, Earthquake Information Bulletin (USGS) (17) 173-176
The Morgan Hill earthquake, a moderate-size (Mg=6.1, ML =6.2, M=6.2) event, was felt throughout central California on April 24, 1984. The epicenter of the earthquake was located near Halls Valley southwest of Mount Hamilton, and the event is presumed to have occurred on the Calaveras fault. Damage, however, was...
Taking the pulse of Parkfield
R. A. Kerr
Henry Spall, editor(s)
1987, Earthquakes & Volcanoes (USGS) (19) 28-29
DOSECC continental scientific drilling program
Henry Spall, editor(s)
1987, Earthquake Information Bulletin (USGS) (19) 48-55
Unreinforced masonry buildings
Henry Spall, editor(s)
1987, Earthquake Information Bulletin (USGS) (19) 178-178
An interview with Otto Nuttli
Henry Spall, editor(s)
1987, Earthquakes & Volcanoes (USGS) (19) 12-22
Raising the stakes at Mount St. Helens
R. A. Kerr
Henry Spall, editor(s)
1987, Earthquakes & Volcanoes (USGS) (19) 56-59
Earthquakes July-August 1986
Waverly J. Person
Henry Spall, editor(s)
1987, Earthquakes & Volcanoes (USGS) (19) 32-35
Earthquakes May-June 1986
Waverly J. Person
Henry Spall, editor(s)
1987, Earthquakes & Volcanoes (USGS) (19) 30-32
Delving into faults and earthquake behavior
R. A. Kerr
Henry Spall, editor(s)
1987, Earthquakes & Volcanoes (USGS) (19) 29-30
Lake Nyos was rigged for disaster
R. A. Kerr
Henry Spall, editor(s)
1987, Earthquakes & Volcanoes (USGS) (19) 22-27
Studies suggest that magmatic gas seepage had turned Lake Nyos in Cameroon into a time bomb; evidence mounts against a volcanic trigger for last August's disaster....
A detailed chronology of the most recent eruption period at Mount Hood, Oregon
Kenneth A. Cameron, P. T. Pringle
1987, Geological Society of America Bulletin (99) 845-851
The most recent eruptive period of Mount Hood volcano, the Old Maid eruptive period, was characterized by volcano-hydrologic events (hydrologic events initiated by volcanic activity) which resulted in extensive lahar inundation in the White, Sandy, and Zigzag River drainages and produced a lithic pyroclastic flow which traveled at least 9...
A chronology of U.S. Geological Survey hazards warnings: 1976-1986
Paula L. Gori, Clement F. Shearer
Henry Spall, editor(s)
1987, Earthquakes & Volcanoes (USGS) (19) 4-11
Modeling of estuarne chlorophyll a from an airborne scanner
Siamak Khorram, Glenn P. Catts, James E. Cloern, Allen W. Knight
1987, IEEE Transactions on Geoscience and Remote Sensing (25) 662-669
Near simultaneous collection of 34 surface water samples and airborne multispectral scanner data provided input for regression models developed to predict surface concentrations of estuarine chlorophyll a. Two wavelength ratios were employed in model development. The ratios werechosen to capitalize on...
Infectious hematopoietic necrosis virus detected by separation and incubation of cells from salmonid cavity fluid.
D. Mulcahy, W.N. Batts
1987, Canadian Journal of Fisheries and Aquatic Sciences (44) 1071-1075
Infectious hematopoietic necrosis (IHN) virus is usually detected by inoculating susceptible cell cultures with cavity ("ovarian") fluid (CF) from spawning females. We identified additional adult carriers of virus in spawning populations of steelhead trout (Salmo gairdneri) and sockeye salmon (Oncorhynchus nerka) by collecting nonerythrocytic cells from CF samples by low-speed...
Enzyme-linked immunosorbent assay for a soluble antigen of Renibacterium salmoninarum, the causative agent for salmonid bacterial kidney disease
R.J. Pascho, D. Mulcahy
1987, Canadian Journal of Fisheries and Aquatic Sciences (44) 183-191
A double-antibody enzyme-linked immunosorbent assay (ELISA) for detection of a soluble fraction of Renibacterium salmoninarum was developed from components extracted from the supernatant of an R. salmoninarum broth culture. The Costar® Serocluster™ EIA microplate gave the highest absorbance and signal-to-noise ratios among seven types tested. Including Tween 80 in the...
Trends in spawning populations of Pacific anadromous salmonids
G.W. Konkel, J.D. McIntyre
1987, Fish and Wildlife Technical Report 9
Annual escapement records for 1968-1984 for five species of Pacific salmon-chinook (Oncorhynchus tshawytscha), coho (O. kisutch), sockeye (O. nerka), pink (O. gorbuscha), and chum (O. keta)—and steelhead (Salmo gairdneri) were obtained from published and unpublished sources and organized in a computer database. More than 25,500 escapement records were obtained for...
Testing of male sockeye salmon (Oncorhynchus nerka) and steelhead trout (Salmo gairdneri) for infectious hematopoietic necrosis virus
D. Mulcahy, R.J. Pascho, W.N. Batts
1987, Canadian Journal of Fisheries and Aquatic Sciences (44) 1075-1078
Infectious hematopoietic necrosis (IHN) virus has been isolated only rarely from whole milt samples of male sockeye salmon (Oncorhynchus nerka). In 3 yr of testing, virus incidences in males ranged from 0 to 13% when milt was sampled but were 60–100% with spleen or kidney. When IHN virus was isolated from...
Use of hatcheries in the management of Pacific anadromous salmonids
J.A. Lichatowich, J.D. McIntyre
M. J. Dadswell, R. J. Klauda, C.M. Moffitt, R.L. Saunders, editor(s)
1987, Book chapter, Common Strategies of Catadromous and Anadromous Fishes. American Fisheries Society Symposium 1.
Summer spawning in the fourhorn sculpin, Myoxocephalus quadricornis, from Alaska
S.R. Goldberg, W. T. Yasutake, R.L. West
1987, Canadian Field-Naturalist (101) 457-457
Histological ovarian analysis indicates summer spawning occurs in Myoxocephalus quadricornis (Fourhorn Sculpin) from Alaska. Previous studies have shown this species spawns during winter in the Baltic Sea; the data presented herein suggests that geographical variation may occur in the timing of spawning of this species....
