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Author: Seibert Q Duntley Publisher: ISBN: Category : Optical oceanography Languages : en Pages : 18
Book Description
The irradiance pattern was measured for the propagation of a collimated beam of light underwater. A neodymium-doubled green laser was transmitted horizontally at a six foot depth in Lake Winnipesaukee, N.H. The irradiance was measured at distances from 0 to 100 feet and for off-axis angles from 0 to 58 degrees. The water had an attenuation length of 4.54 ft/ln and an absorption coefficient of 0.0446 ln/ft. The ratio of attenuation coefficient to absorption coefficient was 4.94. The fractional power contained within a cone of various angles was computed. At 20 attenuation lengths only 10% of the total power is contained within a cone of 4 degrees whereas at 4 attenuation lengths this same cone contains 50% of the power. (Author).
Author: Seibert Q Duntley Publisher: ISBN: Category : Optical oceanography Languages : en Pages : 18
Book Description
The irradiance pattern was measured for the propagation of a collimated beam of light underwater. A neodymium-doubled green laser was transmitted horizontally at a six foot depth in Lake Winnipesaukee, N.H. The irradiance was measured at distances from 0 to 100 feet and for off-axis angles from 0 to 58 degrees. The water had an attenuation length of 4.54 ft/ln and an absorption coefficient of 0.0446 ln/ft. The ratio of attenuation coefficient to absorption coefficient was 4.94. The fractional power contained within a cone of various angles was computed. At 20 attenuation lengths only 10% of the total power is contained within a cone of 4 degrees whereas at 4 attenuation lengths this same cone contains 50% of the power. (Author).
Author: E.A. Drew Publisher: Elsevier ISBN: 0323150314 Category : Science Languages : en Pages : 439
Book Description
Underwater Research is primarily a review of problems in underwater viewing and hearing and acoustics. The chapters in this book are papers collated from the symposia of the Underwater Association. This book explores the need for the further study of the physiological and psychological reactions of divers. The book also concludes that diving is still the best way in studying the benthic ecology and sunken wrecks and cities. The text is divided into 25 detailed chapters. Most of the topics in the text address the common problems encountered by divers such as in hearing and viewing. Specifically, problems in diver communication, depth estimation, color distinction are some of the topics covered. Other chapters deal with the psychological reactions such as anxiety, narcosis, and visual attention. Also, some chapters tackle solutions and experiments for the improvement of diving techniques and equipment. This reference is helpful to divers, students, and scientists involved in marine and environmental science.
Author: William T. Arkin Publisher: Nova Publishers ISBN: 9781600214745 Category : Technology & Engineering Languages : en Pages : 312
Book Description
It is expected that advances in optics will revolutionise the 21st century as they began doing in the last quarter of the 20th. Such fields as communications, materials science, computing and medicine are leaping forward based on developments in optics. This series presents research on optics and lasers from researchers spanning the globe.
Author: Harold Mason Publisher: Syrawood Publishing House ISBN: 9781647404062 Category : Science Languages : en Pages : 0
Book Description
Ocean optics is the study of the transmission of light through the ocean and interaction of light with other bodies in water. The sun rays that fall on the ocean water interact with the different dissolved and particulate constituents of the seawater. This interaction is studied using the methods of ocean optics. The information about the interaction of light in water is important for understanding the underwater ecosystems and their functioning. Ocean optics is a branch of oceanography that is engaged in the research on a wide range of issues related with engineering and ocean science. In-situ study of ocean optics is facilitated by using satellite data. This book elucidates the various methods and applications of ocean optics in a multidisciplinary manner. It will also provide interesting topics for research, which interested readers can take up. This book is a resource guide for experts as well as students.
Author: Rochard W. Spinrad Publisher: Oxford University Press ISBN: 0195361725 Category : Science Languages : en Pages : 302
Book Description
Since the publication of Jerlov's classic volume on optical oceanography in 1968, the ability to predict or model the submarine light field, given measurements of the inherent optical properties of the ocean, has improved to the point that model fields are very close to measured fields. In the last three decades, remote sensing capabilities have fostered powerful models that can be inverted to estimate the inherent optical properties closely related to substances important for understanding global biological productivity, environmental quality, and most nearshore geophysical processes. This volume presents an eclectic blend of information on the theories, experiments, and instrumentation that now characterize the ways in which optical oceanography is studied. Through the course of this interdisciplinary work, the reader is led from the physical concepts of radiative transfer to the experimental techniques used in the lab and at sea, to process-oriented discussions of the biochemical mechanisms responsible for oceanic optical variability. The text will be of interest to researchers and students in physical and biological oceanography, biology, geophysics, limnology, atmospheric optics, and remote sensing of ocean and global climate change.
Author: Seibert Q Duntley
Author: George Leonard Clarke
Author: George Leonard Clarke
Author: George Leonard Clarke
Author: Seibert Q Duntley
Author: E.A. Drew
Author: William T. Arkin
Author: Harold Mason
Author: N.G. Jerlov
Author: Society of Photo-optical Instrumentation Engineers
Author: Rochard W. Spinrad