Landslides
T. H. Nilsen
1977, Earthquake Information Bulletin (USGS) (9) 27-33
Landslides are frequent in areas where there is high seismicity and steep slopes. Landslides associated with earthquakes may cause as much damage as the initial ground shaking. They may also occur long after the earthquake. Some of the major earthquakes that have occurred during the past 15 years demonstrate the hazards...
Earthquakes, December 1976
W. J. Person
1977, Earthquake Information Bulletin (USGS) (9) 28-29
The month of December was seismically quiet compared to the previous months of the year. There were no major earthquakes during the month and only one that caused fatalities. On December 8, the Republic of South Africa was struck by an earthquake that caused deaths and damage. The United States...
Earthquakes, October-November 1976
W. J. Person
1977, Earthquake Information Bulletin (USGS) (9) 32-36
October brought two damaging earthquakes to Ecuador and New Guinea. The Ecuador earthquake, although only magnitude 5.5, caused casualties and damage. The new Guinea earthquake, a major quake, caused a loss of life and damage. Two major earthquakes were experienced during November, in eastern Turkey on November 24 and in...
Earthquakes; May-June 1977
W. J. Person
1977, Earthquake Information Bulletin (USGS) (9) 26-27
The months of May and June were somewhat quiet seismically speaking. There was only on significant earthquake, a magnitude 7.2 on June 22 in teh Tonga Islands. In teh United States, the two largest earthquakes occurred in California and on Hawaii. ...
Evolution of Seismic Geyser, Yellowstone National Park
George D. Marler, Donald E. White
1977, Earthquake Information Bulletin (USGS) (9) 21-25
The most significant event that has affected the geyser basins of Yellowstone National Park since its discovery was the Hebgen Lake earthquake, which occurred at 11:37 PM on August 17, 1959, with a Richter magnitude of 7.1. The epicenter of this earthquake was just west of the park, about 48...
History of the Pasamonte achondrite: Relative susceptibility of the SmNd, RbSr, and UPb systems to metamorphic events
D.M. Unruh, N. Nakamura, M. Tatsumoto
1977, Earth and Planetary Science Letters (37) 1-12
The RbSr, SmNd, and UPb systematics of the eucrite Pasamonte have been studied in order to investigate the relative susceptibility of the different systems to post-crystallization events and to...
Earthquake history of Texas
C. A. von Hake
1977, Earthquake Information Bulletin (USGS) (9) 30-32
Seventeen earthquakes, intensity V or greater, have centered in Texas since 1882, when the first shock was reported. The strongest earthquake, a maximum intensity VIII, was in western Texas in 1931 and was felt over 1 165 000 km 2. Three shocks in the Panhandle region in 1925, 1936, and 1943...
A technique for determining depths for T-year discharges in rigid-boundary channels
D. E. Burkham
1977, Water-Resources Investigations Report 77-83
A simplified technique is presented for determining depths for 1-year discharges (the discharge that will occur, on an average, once in T-years-10 years, 50 years, 100 years) for natural channels (channels not significantly affected by manmade structures) having channel-control conditions and rigid boundaries (channels having a low probability of change...
Map showing lead-zinc deposits of South America
1977, Miscellaneous Field Studies Map 868-C
No abstract available....
Atlantic Flyway review: Region V: Laurel, Prince Georges County, MD
Chandler S. Robbins
1977, North American Bird Bander (2) 83-83
Robbins Nest is located on the fall line one-half mile below Rocky Gorge Reservoir. During the fall migration, about 8 nets are run on the upper part of the 3 acres (edge of the lawn, the garden, under the Virginia Pines, and the upper edge of the mature oak woods...
The seismographic stations of the University of California, Berkeley
B. A. Bolt
1977, Earthquake Information Bulletin (USGS) (9) 4-12
Measuring the size of an earthquake
W. Spence
1977, Earthquake Information Bulletin (USGS) (9) 21-23
Earthquakes occur in a broad range of sizes. A rock burst in an Idaho silver mine may involve the fracture of 1 meter of rock; the 1965 Rat island earthquake in the Aleutian arc involved a 650-kilometer lenght of Earth's crust. Earthquakes can be even smaller and even larger. if...
Implications of a magnetic model of the Long Valley caldera, California
D.L. Williams, F. Berkman, Edward A. Mankinen
1977, Journal of Geophysical Research (82) 3030-3038
A quantitative magnetic model of Long Valley, California, shows that the magnetic field above this caldera is dominated by intracaldera Bishop tuff, part of the ash flow tuff whose eruption precipitated the caldera collapse. We propose that about half of the 350 km3 of intracaldera Bishop tuff, or that part beneath...
Changes in yellow perch (Perca flavescens) populations of Lake Michigan, 1954-75
LaRue Wells
1977, Journal of the Fisheries Research Board of Canada (34) 1821-1829
In the early and mid-1960s the abundance of yellow perch (Perca flavescens) in Lake Michigan declined abruptly. The decline began in the northern part of the lake and spread progressively southward. Circumstantial evidence suggests that the nonnative alewife (Alosa pseudoharengus), by interfering with perch reproduction, was the primary cause of...
Abnormal tooth development in a sea lamprey
Patrick J. Manion, Lee H. Hanson
1977, Progressive Fish-Culturist (39) 127-128
Sea lampreys en route to their spawning grounds have been captured at mechanical or electrical structures that have been in operation for 1 to 27 spawning seasons (1949-75) on some 167 tributaries of the upper Great Lakes; more than 750,000 were taken in 1949-70 (Smith 1971). Among these lampreys...
Australian seismicity studies; a historical survey
J. Cleary
1977, Earthquake Information Bulletin (USGS) (9) 4-8
Demographic features of a lapland longspur population near Barrow, Alaska
Thomas W. Custer, Frank A. Pitelka
1977, The Auk (94) 505-525
Breeding density, clutch size, hatching and fledging success, and survival of adult Lapland Longspurs (Calcarius lapponicus) were monitored over a 7-year period near the Naval Arctic Research Laboratory, Barrow, Alaska. Nesting begins as soon as the tundra starts to clear of snow and appears to be timed so that the...
Construction and operation of cable-chain drag for nest searches
K.F. Higgins, L.M. Kirsch, Harold F. Duebbert, A. Klett
1977, Wildlife Leaflet 512
A list of materials necessary to build and use a 53-m-long cable-chain drag is presented. Techniques are described for searching, finding, and marking nests in a typical area of grassland.During nine nesting seasons, 7,894 nests representing 32 species were found by searching fields with cable-chain drags. Only 2% of the...
Geochemical and hydrologic data for wells and springs in thermal-spring areas of the Appalachians
W.A. Hobba Jr., J.C. Chemerys, D.W. Fisher, F. J. Pearson Jr.
1977, Water-Resources Investigations Report 77-25
Current interest in geothermal potential of thermal-spring areas in the Appalachians enhances the value of data on thermal springs and wells in these areas. This report presents maps showing locations of selected springs and wells and tables of physical and chemical data pertaining to these wells and springs. The chemical...
The National Earthquake Information Service
J.S. Derr
1977, Earthquake Information Bulletin (USGS) (9) 7-9
Earthquake history of Vermont
C. A. von Hake
1977, Earthquake Information Bulletin (USGS) (9) 27-28
Seven earthquakes of intensity V or greater on the Modified Mercalli Scale (MM) are known to have originated within Vermont. Many additional shocks centered in other New England States and Canada have been strongly felt in Vermont. ...
Microearthquake--array studies of the seismicity in Southeast Missouri
W. Stauder
1977, Earthquake Information Bulletin (USGS) (9) 8-13
In 1811-12, a series of disastrous earthquakes struck the southeast Missouri region (see "The Mississippi Valley earthquakes of 1811 and 1812" by Otto W. Nuttli in the Earthquake Information Bulletin, March-April 1974). Earthquake activity continues in the area at present, showing that the seismic hazard is still there. We know little about the...
The chronic toxicity of 3-chloro-4-methyl benzamine HCl to birds
Edward W. Schafer Jr., Ronald B. Brunton, Donald J. Cunningham, Norman F. Lockyer
1977, Archives of Environmental Contamination and Toxicology (6) 241-248
3-Chloro-4-methyl benzamine HCl (DRC-1339), an avian toxicant, was fed to five species of birds for periods up to 120 days. The 30-day LC50 of uniformly treated feed for starlings was 4.7 ppm and the 90-day LC50 was 1.0 ppm. The 28-day LC50 for coturnix was 18 ppm. The 30-day LC50 for pigeons was...
Reproductive steroids in the white-tailed deer (Odocoileus virginianus borealis). I. Seasonal changes in the female
E.D. Plotka, U.S. Seal, G.C. Schmoller, Patrick D. Karns, Kent D. Keenlyne
1977, Biology of Reproduction (16) 340-343
A total of 161 blood samples collected from 77 white-tailed does (Odocoileus virginianus borealis) during the years 1971 through 1974 in Minnesota were utilized to make a preliminary characterization of the estrogen and progesterone levels in pregnant and nonpregnant animals. Progesterone and estrogen were measured by radioimmunoassay. Progesterone levels during...
Rising ground-water level in downtown Louisville, Kentucky, 1972-1977
J. M. Kernodle, D. V. Whitesides
1977, Water-Resources Investigations Report 77-92
Ground-water levels in the alluvial aquifer in Louisville, Jefferson County, Kentucky, are rising at a rate which could cause wet basements and possible structural damage tc buildings in the downtown area by 1982. The predicted water level for 1982 is based on the nearly linear increase which has been observed...
