United States Geological Survey Yearbook
Author : Geological Survey (U.S.)
Publisher :
Page : 156 pages
File Size : 16,77 MB
Release : 1980
Category : Geology
ISBN :
Author : Geological Survey (U.S.)
Publisher :
Page : 156 pages
File Size : 16,77 MB
Release : 1980
Category : Geology
ISBN :
Author : D.R. Helsel
Publisher : Elsevier
Page : 539 pages
File Size : 29,94 MB
Release : 1993-03-03
Category : Science
ISBN : 0080875084
Data on water quality and other environmental issues are being collected at an ever-increasing rate. In the past, however, the techniques used by scientists to interpret this data have not progressed as quickly. This is a book of modern statistical methods for analysis of practical problems in water quality and water resources.The last fifteen years have seen major advances in the fields of exploratory data analysis (EDA) and robust statistical methods. The 'real-life' characteristics of environmental data tend to drive analysis towards the use of these methods. These advances are presented in a practical and relevant format. Alternate methods are compared, highlighting the strengths and weaknesses of each as applied to environmental data. Techniques for trend analysis and dealing with water below the detection limit are topics covered, which are of great interest to consultants in water-quality and hydrology, scientists in state, provincial and federal water resources, and geological survey agencies.The practising water resources scientist will find the worked examples using actual field data from case studies of environmental problems, of real value. Exercises at the end of each chapter enable the mechanics of the methodological process to be fully understood, with data sets included on diskette for easy use. The result is a book that is both up-to-date and immediately relevant to ongoing work in the environmental and water sciences.
Author : K. J. Schulz
Publisher : Geological Survey
Page : 868 pages
File Size : 18,72 MB
Release : 2017
Category : Business & Economics
ISBN : 9781411339910
As the importance and dependence of specific mineral commodities increase, so does concern about their supply. The United States is currently 100 percent reliant on foreign sources for 20 mineral commodities and imports the majority of its supply of more than 50 mineral commodities. Mineral commodities that have important uses and face potential supply disruption are critical to American economic and national security. However, a mineral commodity's importance and the nature of its supply chain can change with time; a mineral commodity that may not have been considered critical 25 years ago may be critical today, and one considered critical today may not be so in the future. The U.S. Geological Survey has produced this volume to describe a select group of mineral commodities currently critical to our economy and security. For each mineral commodity covered, the authors provide a comprehensive look at (1) the commodity's use; (2) the geology and global distribution of the mineral deposit types that account for the present and possible future supply of the commodity; (3) the current status of production, reserves, and resources in the United States and globally; and (4) environmental considerations related to the commodity's production from different types of mineral deposits. The volume describes U.S. critical mineral resources in a global context, for no country can be self-sufficient for all its mineral commodity needs, and the United States will always rely on global mineral commodity supply chains. This volume provides the scientific understanding of critical mineral resources required for informed decisionmaking by those responsible for ensuring that the United States has a secure and sustainable supply of mineral commodities.
Author : Susan C. Aragon-Long
Publisher :
Page : pages
File Size : 33,64 MB
Release : 2018-07
Category :
ISBN : 9781411342323
Author : P.R. Hill
Publisher : Geological Society of London
Page : 300 pages
File Size : 24,21 MB
Release : 2020-12-07
Category : Science
ISBN : 1786204762
Senior managers and Heads of Geological Survey Organizations (GSOs) from around the world have contributed a collection of papers to provide a benchmark on how GSOs are responding to national and international needs in a rapidly changing world. GSOs continue to provide key scientific information about Earth systems, natural hazards and climate change. As countries adopt sustainable development principles and the public increasingly turns to social media to find information about resource and environmental issues, the generation and communication of Earth science knowledge become increasingly important. This volume provides a snapshot of how GSOs are adapting their activities to this changing world. The different national perspectives presented converge around several common themes related to resources, environment and big data. Climate change and the UN’s Sustainable Development Goals provide an increased incentive for GSOs of the world to work in harmony, to generate knowledge of Earth systems and to provide solutions for sustainable management of the planet.
Author : Geological Survey (U.S.)
Publisher :
Page : 702 pages
File Size : 37,30 MB
Release : 1884
Category : Forest reserves
ISBN :
Author : Mary C. Rabbitt
Publisher :
Page : 504 pages
File Size : 38,70 MB
Release : 1979
Category : Mineral lands
ISBN :
Author : Morris Mordecai Thompson
Publisher :
Page : 288 pages
File Size : 20,20 MB
Release : 1981
Category : Cartography
ISBN :
Author : W. Jacquelyne Kious
Publisher : Geological Survey (USGS)
Page : 84 pages
File Size : 26,5 MB
Release : 1996
Category : Science
ISBN :
In the early 1960s, the emergence of the theory of plate tectonics started a revolution in the earth sciences. Since then, scientists have verified and refined this theory, and now have a much better understanding of how our planet has been shaped by plate-tectonic processes. We now know that, directly or indirectly, plate tectonics influences nearly all geologic processes, past and present. Indeed, the notion that the entire Earth's surface is continually shifting has profoundly changed the way we view our world.
Author : Mary C. Rabbitt
Publisher :
Page : 54 pages
File Size : 26,65 MB
Release : 1979
Category : Government publications
ISBN :