Ship canals and aquatic ecosystems
William I. Aron, Stanford H. Smith
1971, Science (174) 13-20
Through a combination of ecosystem homeostasis and the perversity of man and nature, oftentimes the significant biological changes effected by environmental modifications are not detected until long after the initial change has taken place. The immediate impact, which may range from the spectacular to the undetectable, is a deceptive measure...
Modified Mercalli Intensity Scale of 1931 (abridged)
Jerry L. Coffman, editor(s)
1970, Earthquake Information Bulletin (USGS) (2) 25-25
[none]...
A computer program to trace seismic ray distribution in complex two-dimensional geological models
Nazieh K. Yacoub, James H. Scott
1970, Report
A computer program has been developed to trace seismic rays and their amplitudes and energies through complex two-dimensional geological models, for which boundaries between elastic units are defined by a series of digitized X-, Y-coordinate values. Input data for the program includes problem identification, control parameters, model coordinates and elastic...
Relationship between subsidence and volcanic load, Hawaii
J.G. Moore
1970, Bulletin Volcanologique (34) 562-576
A computer analysis of tide-gage records in the northeast Pacific indicates that the active volcanic islands of eastern Hawaii are subsiding at a rate considerably faster than the eustatic rise of sea level. The rate of absolute subsidence increases progressively toward the center of current activity on the Island of...
A proposed streamflow data program for Ohio
Peter W. Anttila
1970, Open-File Report 70-10
A streamflow data program is proposed for Ohio which consists of both data collection and data analysis. The program is proposed after a study which (1) established long-term objectives and goals for streamflow information, (2) examined and analyzed available data to determine its adequacy for meeting the established goals, and...
Development of the Astoria Canyon-Fan physiography and comparison with similar systems
C.H. Nelson, P.R. Carlson, J.V. Byrne, T. R. Alpha
1970, Marine Geology (8) 259-291
A detailed bathymetric study of Astoria Canyon and Astoria Fan provides a model for typical submarine canyon-fan systems. The present canyon head is 9 miles (17 km) west of the Columbia River mouth but buried Pleistocene channels appear to have connected the two features in the past. The canyon, which...
Petrology of the Plutonic Rocks of west-central Alaska
Thomas P. Miller
1970, Open-File Report 71-210
A series of plutons in west-central Alaska defines the Hogatza plutonic belt which extends for about 200 miles in an east-west direction from the northeastern Seward Peninsula to the Koyukuk River. The plutonic rocks have an aggregate area of about 1,200 square miles and their composition, distribution, and possible petrogenesis...
Chemical and biological conditions in Bald Eagle Creek and prognosis of trophic characteristics of Foster Joseph Sayers Reservoir, Centre County, Pennsylvania
Herbert N. Flippo Jr.
1970, Open-File Report 71-109
Foster Joseph Sayers. Reservoir will b.e impounded on moderately fertile soils; however, its water source, Bald Eagle Creek, is a bicarbonate-water stream that is over~y-enriched with nutrients. About 650 of the 1,730 acres to be inundated in summer are subject to infestation with aquatic weeds. Nuisance algal "blooms" are expected...
Late Miocene nonmarine diatoms from the Kilgore area, Cherry County, Nebraska
G.W. Andrews
1970, Professional Paper 683-A
The Valentine Formation of A. L. Lugn, which is of late Miocene and early Pliocene age, contains diatomaceous and plant-bearing sediments at a locality on the north bluff of the Niobrara River, about 10 miles south of Kilgore, Cherry County, Nebr. The fossil flora has been studied by H. D....
A continuing program for estimating ground-water pumpage in California--Methods
William Ogilbee, Hugh T. Mitten
1970, Open-File Report 70-246
Municipal and agricultural ground-water pumpage is being estimated for the principal ground-water basins in California. Because of its anticipated use in analog or digital hydrologic models, agricultural pumpage is estimated for unit areas.Estimated municipal pumpage is based on census figures and population projections and on pumpage reported by organizations in...
Water resources of the River Rouge basin, southeastern Michigan
R. L. Knutilla
1970, Hydrologic Atlas 356
The River Rouge basin is characterized by moderately hilly topography to the northwest graduating to a relatively level land surface to the south east.Stream gradients near the northwestern basin divide are relatively steep; but many become more steep in reaches where they cross beach lines of former glacial lakes. In...
A proposed streamflow-data program for Utah
G.L. Whitaker
1970, Open-File Report 71-322
An evaluation of the streamflow data available in Utah was made to provide guidelines for planning future programs. The basic steps in the evaluation procedure were (1) definition of the long- term goals of the streamflow-data program in quantitative form, (2) examination and analysis of all available data to determine...
Silica sand deposits in the Monrovia area, Liberia
Sam Rosenblum, S.P. Srivastava
1970, Open-File Report 70-280
Thin surficial deposits of white silica sand occupy much of the flat coastal area of Liberia from Monrovia to Buchanan 100 km southeast; most of the sand is of good quality for glass manufacture. A lagoonal mode of origin is suggested for these essentially monomineralic deposits. Based on the average...
Petroleum possibilities of the Yukon-Koyukuk Province, Alaska
William Wallace Patton Jr.
1970, Open-File Report 70-257
The recent discovery of major oil resources on Alaska's North Slope has rekindled interest in the petroleum possibilities of the Yukon-Koyukuk province, a vast tract of Cretaceous rocks stretching along the west coast of Alaska from the Brooks Range to the Yukon delta. Attention was first focused on this region...
Sediment transport by streams in the Palouse River basin, Washington and Idaho, July 1961-June 1965
P. R. Boucher
1970, Water Supply Paper 1899-C
The Palouse River basin covers about 3,300 square miles in southeastern Washington and northwestern Idaho. The eastern part of the basin is composed of steptoes and foothills which are generally above an altitude of 2,600 feet; the central part is of moderate local relief and is mantled chiefly by thick...
Chromite deposits of the north-central Zambales Range, Luzon, Philippines
Darwin L. Rossman
1970, Open-File Report 70-281
Peridotite and gabbro form an intrusive complex which is exposed over an area about 35 km wide and 150 km long in the center of the Zambales Range of western Luzon. The Zambales Complex is remarkable for its total known resources, mined and still remaining, of about 15 million metric...
A modified streamflow-data program for New Jersey
J.E. McCall, A.C. Lendo
1970, Open-File Report 70-205
The Alaska earthquake, March 27, 1964: Lessons and conclusions
Edwin B. Eckel
1970, Professional Paper 546
One of the greatest earthquakes of all time struck south-central Alaska on March 27, 1964. Strong motion lasted longer than for most recorded earthquakes, and more land surface was dislocated, vertically and horizontally, than by any known previous temblor. Never before were so many effects on earth processes and on...
Preliminary digital model studies of the Rio Aconcagua Valley, Chile
O. James Taylor
1970, Open-File Report 71-278
Analysis of Shublik Formation rocks from Mt. Michelson quadrangle, Alaska
Robert L. Detterman
1970, Open-File Report 70-101
Analysis of 88 samples from the Shublik formation on Fire Creek, Mt. Michelson Quadrangle, Alaska, are presented in tabular form. The results include the determination of elements by semiquantitative spectrographic analysis, phosphate by X-ray fluorescence, carbon dioxide by acid decomposable carbonate, total carbon by induction furnace, carbonate carbon by conversion...
Hydrologic effects of floodwater-retarding structures on Garza-Little Elm Reservoir, Texas
Clarence R. Gilbert, Stanley P. Sauer
1970, Water Supply Paper 1984
The Texas District of the Water Resources Division of the U.S. Geological Survey has collected and analyzed hydrologic data since 1953 to define the effects of systems of floodwater-retarding structures on downstream water and sediment yield. The district project includes 11 study areas ranging from 18 to 80 square miles...
An appraisal of ground water for irrigation in the Wadena area, central Minnesota
F.G. Lindholm
1970, Water Supply Paper 1983
The Wadena area is part of a large sandy plain in central Minnesota whose soils have low water-holding capacity. Drought conditions which adversely affect plant growth frequently occur in the summer when moisture is most needed. To reduce the risk of crop failure in the area supplemental irrigation is on...
A digital model for aquifer evaluation
George Francis Pinder
1970, Techniques of Water-Resources Investigations 07-C1
Test of airborne fluorometer over land surfaces and geologic materials
George Eimert Stoertz, William R. Hemphill
1970, Open-File Report 70-316
Response of an experimental Fraunhofer line discriminator(FLD) to a wide range of surficial deposits common in deserts and semideserts was tested in the laboratory and from an 1-1-19 helicopter. By design the instrument sensed radiation from the ground specifically at the sodium D2 Fraunhofer line (5890 angstroms). It is capable...
Effects of the earthquake of March 27, 1964, on the Alaska Railroad
David S. McCulloch, Manuel G. Bonilla
1970, Professional Paper 545-D
In the 1964 Alaska earthquake, the federally owned Alaska Railroad sustained damage of more than $35 million: 54 percent of the cost for port facilities; 25 percent, roadbed and track; 9 percent, buildings and utilities; 7 percent, bridges and culverts; and 5 percent, landslide removal. Principal causes of damage were:...
