An Analysis of the Earth's Magnetic Field from 1835 to 1965 PDF Download
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Author: Keith L. McDonald
Publisher:
ISBN:
Category : Cosmic magnetic fields
Languages : en
Pages : 100
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Book Description
Author: Keith L. McDonald
Publisher:
ISBN:
Category : Cosmic magnetic fields
Languages : en
Pages : 100
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Book Description
Author: Keith L. McDonald
Publisher:
ISBN:
Category : Geomagnetism
Languages : en
Pages : 108
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 732
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 970
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Jeffrey L. Eighmy
Publisher: University of Arizona Press
ISBN: 9780816511327
Category : Social Science
Languages : en
Pages : 472
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Book Description
Archaeomagnetic dating—dating archaeological and geological materials by comparing their magnetic data with known changes in the earth's magnetic field—has proved to be of increasing reliability in establishing behavioral and social referents of archaeological data. Now this volume presents the first book-length treatment of its theory and methodology in North American archaeology. The sixteen original papers in many cases represent the work of individuals who have been intimately involved with the development and refinement of archaeomagnetic dating techniques. They discuss the geophysical underpinnings of archaeomagnetism; general methodological problems associated with present archaeomagnetic studies, such as sample collection, data measurement and analysis, and experimental control; and advances in experimental archaeology. Case histories consider both successful and unsuccessful applications of the technique in New World fieldwork. Raw data is provided in an appendix. While the volume deals specifically with problems of archaeomagnetic direction dating in the Americas, it should prove useful in constructing exact chronologies in other archaeological sites as well and in the geologic record at large. As the only single volume devoted to the subject, it will serve as the standard reference in the field.
Author: United States. Environmental Science Services Administration
Publisher:
ISBN:
Category : Environmental sciences
Languages : en
Pages : 164
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Author:
Publisher:
ISBN:
Category : Geophysics
Languages : en
Pages : 690
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Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geophysics
Languages : en
Pages : 964
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Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1142
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Author: Joseph L. Kirschvink
Publisher: Springer Science & Business Media
ISBN: 1461303133
Category : Science
Languages : en
Pages : 679
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Book Description
The mystery of how migrating animals find their way over unfamiliar terrain has intrigued people for centuries, and has been the focus of productive research in the biological sci ences for several decades. Whether or not the earth's magnetic field had anything to do with their navigational abilities has sufaced and been dismissed several times, beginning at least in the mid to late 1800s. This topic generally remained out of the mainstream of scientific research for two reasons: (1) The apparent irreproducibility of many of the be havioral experiments which were supposed to demonstrate the existence of the magnetic sense; and (2) Perceived theoretical difficulties which were encountered when biophysi cists tried to understand how such a sensory system might operate. However, during the mid to late 1960s as the science of ethology (animal behavior) grew, it became clear from studies on bees and birds that the geomagnetic field is used under a variety of conditions. As more and more organisms were found to have similar abilities, the problem shifted back to the question as to the basis of this perception. Of the various schemes for trans ducing the geomagnetic field to the nervous system which have been proposed, the hy pothesis of magnetite-based magnetoreception discussed at length in this volume has per haps the best potential for explaining a wide range of these effects, even though this link is as yet clear only in the case of magnetotactic bacteria.
