The EROS Data Center
Water Resources Division, U.S. Geological Survey
1981, Report
The Earth Resources Observation Systems (EROS) Program of the U.S. Department of the Interior, administered by the Geological Survey, was established in 1966 to apply remote-sensing techniques to the inventory, monitoring, and management of natural resources. To meet its primary objective, the EROS Program includes research and training in the...
United States Geological Survey Yearbook, fiscal year 1980
Water Resources Division, U.S. Geological Survey
1981, Report
It is not very often that a single event is so overwhelming that it changes public perceptions of natural hazards for generations. Perhaps for the U.S. Geological Survey, the explosive volcanic activity of Mount St. Helens began such a change. After 101 years of careful science of the Earth's past...
Effects of abundant species on the ability of observers to make accurate counts of birds
J. Michael Scott, Fred L. Ramsey
1981, The Auk (98) 610-613
Bird numbers can be estimated using a variety of methods (Emlen 1971, Berthold 1976, Reynolds et al. 1980). The number of birds counted is frequently reported in relation to some measure of effort: e.g. per unit area, per count period, per observer day, or per km of trail. The numbers...
The role of observer bias in the North American Breeding Bird Survey
C. A. Faanes, D. Bystrak
1981, Book chapter, Estimating Numbers of Terrestrial Birds
Ornithologists sampling breeding bird populations are subject to a number of biases in bird recognition and identification. Using Breeding Bird Survey data, these biases are examined qualitatively and quantitatively, and their effects on counts are evaluated. Differences in hearing ability and degree of expertise are the major observer biases...
Methods of detecting and counting raptors: A review
M.R. Fuller, J. A. Mosher
C. John Ralph, J. Michael Scott, editor(s)
1981, Book chapter, Estimating Numbers of Terrestrial Birds
Most raptors are wide-ranging, secretive, and occur at relatively low densities. These factors, in conjunction with the nocturnal activity of owls, cause the counting of raptors by most standard census and survey efforts to be very time consuming and expensive. This paper reviews the most common methods of...
The North American Breeding Bird Survey
D. Bystrak
C. John Ralph, J. Michael Scott, editor(s)
1981, Book chapter, Estimating Numbers of Terrestrial Birds
A brief history of the North American Breeding Bird Survey (BBS) and a discussion of the technique are presented. The approximately 2000 random roadside routes conducted yearly during the breeding season throughout North America produce an enormous bank of data on distribution and abundance of breeding birds with great potential...
Estimates of avian population trends from the North American Breeding Bird Survey
P.H. Geissler, B.R. Noon
C. John Ralph, J. Michael Scott, editor(s)
1981, Book chapter, Estimating Numbers of Terrestrial Birds
One of the major purposes of bird population studies is to document changes in population size over a period of years. The traditional method used in Europe and North America to detect population change is to calculate annual ratios. However, this method can produce spurious results when ratios...
Discriminant analysis in wildlife research: Theory and applications
B. Kenneth Williams
D.E. Capen, editor(s)
1981, Book chapter, The Use of Multivariate Statistics in Studies of Wildlife Habitat
Discriminant analysis, a method of analyzing grouped multivariate data, is often used in ecological investigations. It has both a predictive and an explanatory function, the former aiming at classification of individuals of unknown group membership. The goal of the latter function is to exhibit group separation by means of linear...
Analysis of bird survey data using a modification of Emlen's method
F. L. Ramsey, J. M. Scott
C. John Ralph, J. Michael Scott, editor(s)
1981, Book chapter, Estimating Numbers of Terrestrial Birds
Responses of Raptorial Birds to Low Level Military Jets and Sonic Booms: Results of the 1980-1981 Joint U.S. Air Force-U.S. Fish and Wildlife Service Study
D. H. Ellis
1981, Book
Summary: For this study, we gathered several kinds of data to determine the likely effects of low level jets and sonic booms on nesting Peregrine Falcons and other raptors. We directly observed responses to worst case stimulus loads: responses to extremely frequent and extremely nearby jet aircraft were often...
Water resources data for Kentucky, 1981
Water Resources Division, U.S. Geological Survey
1981, Water Data Report KY-81-1
Seismicity map of the state of Pennsylvania
C. W. Stover, B.G. Reagor, S. T. Algermissen
1981, Miscellaneous Field Studies Map 1280
The earthquake data shown on this map and listed in table 1 are a list of earthquakes that were originally used in preparing the Seismic Risk Studies in the United States in the United States (Algermissen, 1969) which have been recompiled and updated through 1977. These data have been reexamined...
Waterfowl and their wintering grounds in Mexico, 1937-64
George B. Saunders, Dorothy Chapman Saunders
1981, Resource Publication 138
The U.S. Fish and Wildlife Service has been interested in migratory birds, especially waterfowl, in Mexico for many years, An early period of cooperation in waterfowl administration was culminated in 1937 with the final ratification of the Convention Between the United States and the United Mexican States for the Protection...
Floods in the English River basin, Iowa
A.J. Heinitz, D.E. Riddle
1981, Open-File Report 81-67
Information describing floods is essential for proper planning, design, and operation of bridges and other structures on or over streams and their flood plains. This report provides information on flood stages and discharges, flood magnitude and frequency, bench mark data, and flood profiles for the English River and some of its...
Gravity anomaly and interpretation map of the Chignik and Sutwik Island quadrangles, Alaska
J. E. Case, D.F. Barnes, R. L. Detterman, R. L. Morin, R. F. Sikora
1981, Miscellaneous Field Studies Map 1053-J
The gravity field of the Chignik and Sutwik Island quadrangles near the center of the Alaska Peninsula represents a complex series of transitions between probable continental crust on the north, probable oceanic crust on the south, sedimentary basins on each side of the peninsula, and a central structural high and volcanic arc. The resulting gravity field...
Seismic-reflection and sidescan-sonar data collected off eastern Cape Cod, Massachusetts, during April 1979
Harley J. Knebel
1981, Open-File Report 81-184
The U.S. Geological Survey collected 98 line kilometers of single-channel seismic-reflection profiles and sidescan sonar records on the inner shelf of eastern Cape Cod, Massachusetts, during April 1979. The data were obtained during cruise NE-1-79 of the R/V NEECHO. The purposes of the survey were: (1) to study the development...
Techniques for estimating magnitude and frequency of floods for Wisconsin streams
Duane H. Conger
1981, Open-File Report 80-1214
This report provides improved methods for estimating the magnitude and frequency of floods for Wisconsin streams. Proper design of hydraulic structures and adequate flood-plain management depend on this information. Multiple-regression techniques were used to develop equations for estimating flood frequencies at ungaged sites. The State is divided into five areas and...
Water resources of the Santa Ysabel and Mesa Grande Indian Reservations, San Diego County, California
John R. Freckleton
1981, Open-File Report 81-342
The Santa Ysabel (consisting of three tracts) and Mesa Grande Indian Reservations are in north-central San Diego County, Calif. On both reservations fractured and weathered igneous and metamorphic rocks and alluvium are water bearing; however, no wells are known to derive their water entirely from alluvium. Well yields range from...
Preliminary data report for the San Juan Basin-Crownpoint surveillance study
Peter F. Frenzel, Steven D. Craigg, Elizabeth T. Padgett
1981, Open-File Report 81-484
Geohydrologic data that may be used to predict the effects of mining on Navajo water resources in the San Juan structural basin are reported as well as the current availability of data from other government agencies. Emphasis is on the vicinity of Crownpoint, New Mexico....
Quality assurance practices for the chemical and biological analyses of water and fluvial sediments
Linda C. Friedman, David E. Erdman
1981, Open-File Report 81-650
This chapter contains practices used by the U.S. Geological Survey to assure the quality of analytical data for water, fluvial sediment, and aquatic organisms.These practices are directed primarily toward personnel making water-quality measurements. Some detail specific quality control techniques, others document quality assurance procedures being used by the Central Laboratories...
Probable high ground-water levels in Massachusetts
M. H. Frimpter
1981, Open-File Report 80-1205
Water-level records from an observation-well network are analyzed for utility in estimating probable high ground-water levels in three different geohydrologic environments in Massachusetts. Analyses were made of 83 observation wells with between 8 and 37 years of records. Maximum annual water levels occur most frequently in March and April. The...
A regional geochemical reconnaissance, north-central Sonora, Mexico; techniques and analytical data
James G. Frisken, Elwin L. Mosier, Robert L. Turner
1981, Open-File Report 81-795
Hydrologic effects of highway-deicing chemicals in Massachusetts
L.R. Frost Jr., S.J. Pollock, R.F. Wakelee
1981, Open-File Report 81-209
Methods of estimating annual mean and annual maximum chloride concentrations and sodium concentrations in streams were developed using multiple and simple linear regression techniques and data collected during the 1972-77 water years. Independent variables are easily obtainable parameters such as total salt application within a basin, annual precipitation, and drainage...
Hydrologic effects of highway-deicing chemicals in Massachusetts; executive summary
L.R. Frost Jr., S.J. Pollock, R.F. Wakelee
1981, Open-File Report 81-210
Methods of estimating annual mean and annual maximum chloride concentrations in streams were developed through multiple and simple linear regression techniques using data collected during the 1972-77 water years. Independent variables are easily obtainable parameters, such as total salt application within a basin, annual precipitation, and drainage basin characteristics. Methods...
Ground-water data for the Beryl-Enterprise area, Escalante Desert, Utah
R. W. Mower
1981, Open-File Report 81-340
This report contains a compilation of selected ground-water data for the Beryl-Enterprise area, Iron and Washington Counties, Utah. The records of the wells include such information as driller's logs, yield, drawdown, use, and temperature of the well water. There are also records of water levels in selected wells for the...
