Download or read book SACLANTCEN Code of Practice for Safe Scientific Diving written by Federico De Strobel and published by . This book was released on 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Code of Practice for Scientific Diving written by and published by . This book was released on 1988 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific Diving written by Nicholas Coit Flemming and published by . This book was released on 1996 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SACLANTCEN s Use of Scuba Diving in Oceanographic and Acoustic Research written by Federico De Strobel and published by . This book was released on 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over ten years of scientific diving for oceanographic and acoustics research is described. Examples show the need for a scientist to dive even in highly automated activities. Diving operations in oceanographic research have included: deployment of oceanographic buoys and sensors, check-and-recovery operations, installation of bottom-mounted systems, placing fluorescent dye releasers for oceanographic investigations, in-situ calibration of neutrally buoyant floats, and evaluations of low-speed towed bodies. Diving operations in underwater acoustics research have included: visual and stereophotographic investigations and sampling of the sea floor and in-situ measurements of the acoustic characteristics of sediments using geophones and electroacoustic transducers. These operations and techniques are described and some reference is given to organization, safety rules, and operational limits.
Download or read book Bibliography on Diving and Diving Safety for a Scientific Diving Program written by Margaret A. Rioux and published by . This book was released on 1987 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diving, scientific diving, and diver safety are specialized subject areas not generally well-represented in even the largest of academic libraries, largely because of difficulties in locating appropriate items to include in the collection. However, in order to adequately fulfill his/her responsibilities, the Diving Safety Officer of a scientific diving program needs easy access to a broad range of books, reports, and journals covering all aspects of diving. This bibliography outlines a comprehensive collection appropriate to the needs of a scientific diving program in a research or academic institution. Items are grouped in broad subject areas corresponding to various aspects of the diving program. Both title and author indexes are also included.
Download or read book Unesco Technical Papers in Marine Science written by Unesco and published by . This book was released on 1989 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geothermal Heat Flux at the COST B 2 and B 3 Wells U S Atlantic Continental Margin written by B. Della Vedova and published by . This book was released on 1987 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat flow estimates at two sites on the U.S. Atlantic continental margin are presented. An estimate of the heat flowing from the basement also has been obtained. About 4.8 km of sediments penetrated at the COST B-2 and 4.0 km at the COST B-3 were deposited since the Upper Jurassic. Well logs were used to evaluate thermal gradients and sedimentation rates, whereas thermal conductivities and radiogenic heat productions were measured on drill cuttings samples. A procedure to estimate in-situ thermal conductivity from drill cuttings and well logs is described. A substantial set of samples, in the form of drill cuttings, were sorted in four major lithologies: sandstones, siltstones, shales and limestones. Laboratory measurements of density, porosity, thermal conductivity, quartz (%), potassium (%), uranium (ppm) and thorium (ppm) were performed on 128 reorganized and pulverized samples. A significant correlation of the matrix thermal conductivity to quartz and potassium content was found. In situ porosity and volume fraction of each lithology, determined mainly from well logs, were used to calculate in situ mean thermal conductivity. Finally the mean in situ vertical component of the thermal conductivity, as required for heat flow values, has been estimated from a correction factor for the anisotropy of each lithology. The in-situ temperature and anisotropy effects substantially decrease estimates of thermal conductivity at depth. Below the uppermost 1 km in both wells the best estimate of the thermal gradient is 26.3°C km- 1 at COST B-2 and 26.1°C km- 1 at COST B-3, whereas in situ mean thermal conductivities range between about 1.8 and 1.9 W m- 1 K- 1 (4.3-4.5 T.C.U.). The average heat flow is estimated as about 45 mwm- 2 (1.07 H.F.U.) at COST B-2 and 44 mWm- 2 (1.06 H.F.U.) at COST B-3, with an uncertainty of about 20-25%. The mean radiogenic production in sediments at the two sites has been estimated as 1.83 (COST B-2) and 1.44 (COST B-3) 10- 6Wm- 3. With a 12-14 km thick sedimentary sequence a radioactive contribution of 20-25 mWm- 2 can be expected. The effects of sediment deposition, compaction, pore water advection and radiogenic heat production have been combined in a numerical model (Hutchison, 1985) to estimate the undisturbed basement heat flux. Although the sedimentation depresses the basement heat flux by 15-20%, this effect is more than compensated by radioactive heat production in the sediments, so that the surface flux is estimated to be higher than that from the basement. The latter is calculated at about 33-39 mwm- 2 (0.8-0.9 H.F.U.), a relatively low value. The overall uncertainity is about ± 20-25%, and other estimates on continental margins with thick sediments (e.g. Reiter and Jessop, 1985) probably have at least a similar uncertainty.
Download or read book Bollettino Di Oceanologia Teorica Ed Applicata written by and published by . This book was released on 1989 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book First Italian Expedition of Geological Oceanography in the Ross Sea Antarctica written by Antonio Brambati and published by . This book was released on 1989 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific Diving written by Nicholas Coit Flemming and published by UNESCO. This book was released on 1996 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This code of practice is published in order to provide guidance to diving officers in research institutions, diving administrators and scientific divers themselves. The objective is to maintain high standards of safety and operational effectiveness in a wide range of aquatic conditions.
Download or read book Maritime Traffic Effects on Biodiversity in the Mediterranean Sea written by Ameer Abdulla and published by IUCN. This book was released on 2008 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underwater Acoustic Modeling and Simulation written by Paul C. Etter and published by CRC Press. This book was released on 2017-12-19 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: Underwater Acoustic Modeling and Simulation, Fourth Edition continues to provide the most authoritative overview of currently available propagation, noise, reverberation, and sonar-performance models. This fourth edition of a bestseller discusses the fundamental processes involved in simulating the performance of underwater acoustic systems and emphasizes the importance of applying the proper modeling resources to simulate the behavior of sound in virtual ocean environments. New to the Fourth Edition Extensive new material that addresses recent advances in inverse techniques and marine-mammal protection Problem sets in each chapter Updated and expanded inventories of available models Designed for readers with an understanding of underwater acoustics but who are unfamiliar with the various aspects of modeling, the book includes sufficient mathematical derivations to demonstrate model formulations and provides guidelines for selecting and using the models. Examples of each type of model illustrate model formulations, model assumptions, and algorithm efficiency. Simulation case studies are also included to demonstrate practical applications. Providing a thorough source of information on modeling resources, this book examines the translation of our physical understanding of sound in the sea into mathematical models that simulate acoustic propagation, noise, and reverberation in the ocean. The text shows how these models are used to predict and diagnose the performance of complex sonar systems operating in the undersea environment.
Download or read book Sounding the Depths written by Michael Jasny and published by . This book was released on 1999 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Keeping Watch written by A. Walter Dorn and published by UN. This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge is power. In the hands of UN peacekeepers, it can be a power for peace. Lacking knowledge, peacekeepers often find themselves powerless in the field, unable to protect themselves and others. The United Nations owes it to the world and to its peacekeepers to utilize all available tools to make its monitoring and surveillance work more effective. "Keeping Watch" explains how technologies can increase the range, effectiveness, and accuracy of UN observation. Satellites, aircraft, and ground sensors enable wider coverage of many areas, over longer periods of time, while decreasing intrusiveness. These devices can transmit and record imagery for wider dissemination and further analysis, and as evidence in human rights cases and tribunals. They also allow observation at a safe distance from dangerous areas, especially in advance of UN patrols, humanitarian convoys, or robust forces. While sensor technologies have been increasing exponentially in performance while decreasing rapidly in price, however, the United Nations continues to use technologies from the 1980s. This book identifies potential problems and pitfalls with modern technologies and the challenges to incorporate them into the UN system. The few cases of technologies effectively harnessed in the field are examined, and creative recommendations are offered to overcome the institutional inertia and widespread misunderstandings about how technology can complement human initiative in the quest for peace in war-torn lands. ""Walter Dorn is one of the most thoughtful and knowledgeable analysts of peacekeeping and security policy, and this book makes an important contribution to a field that needs far more public discussion.""--The Hon. Bob Rae, MP for Toronto Centre and Liberal Foreign Affairs critic
Download or read book Experimental Acoustic Inversion Methods for Exploration of the Shallow Water Environment written by Andrea Caiti and published by Springer. This book was released on 2012-10-09 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, research on acoustic remote sensing of the ocean has evolved considerably, especially in studying complex physical and biological processes in shallow water environments. To review the state of the art, an international workshop was held at Carvoeiro, Portugal, in March 1999, bringing together leading international researchers in the field. In contrast to much of the recent theoretical work, emphasis was placed on the experimental validation of the techniques. This volume, based on presentations at this workshop, summarizes a range of diverse and innovative applications. The invited contributions explore the use of acoustics to measure bottom properties and morphology, as well as to probe buried objects within the sediment. Within the water column, sound is applied to imaging of oceanographic features such as currents and tides or monitoring of marine life. Another key theme is the use of sound to solve geometric inverse problems for precise tracking of undersea vehicles. Audience: This volume should be useful both to the novice seeking an introduction to the field and to advanced researchers interested in the latest developments in acoustic sensing of the ocean environment. The workshop was sponsored by the Fundação para a Ciêcia e a Tecnologia (Portuguese Foundation for Science and Technology).
Download or read book Antarctic Ecology written by Richard M. Laws and published by . This book was released on 1984 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of 15 papers on Antarctic ecology: The terrestrial environment by D.W.H. Walton; Terrestrial plant biology by R.I. Lewis Smith; Terrestrial microbiology, invertebrates and ecosystems by W. Block; Introduced mammals by W.N. Bonner; Inland waters by R.B. Heywood; The marine environment by T.D. Foster; The marine flora by R.B. Heywood and T.M. Whitaker; Marine zooplankton by J. Everson; Fish by J. Everson; Seabirds by J.P. Croxall; Seals by R.M. Laws; Whales by S.G. Brown and C.H. Lockyer; Marine interactions by J. Everson; Conservation and the Antarctic by W.N. Bonner.
Download or read book Underwater Association Code of Practice for Scientific Diving written by Nicholas Coit Flemming and published by . This book was released on 1979 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
